Holotype male: Madagascar, Mahajanga prov., Ampatika env., Mahajamba riv., 17.–19.xi.1995, I. Jeniš lgt. (FGMRI). Paratype (1): 1 female, Madagascar, Morondava prov., Maronfandilia, 4.–5.xii.1995, J. Stolarczyk lgt. (FGMRI).

This species is similar to C. (C.) humeralis Pic, 1926, but differs by lighter colour of the elytra and missing lighter humeri. Fully differs by shape of the aedeagus. Fully differs by shape of the aedeagus. For differences from other Madagascan species, see key.

Male (holotype). Elongate-elliptical, transversally convex. Body length 5.8 mm, maximum width 2.2 mm (Figure 1). Ratio length:width of elytra 1.7. Body light brown, also antennae, maxillary and labial palpi and legs, only pronotum and head darker. Pubescence yellowish white.

Head matt shiny, with double punctation – first coarse, dense, umbilicate, distance between punctures approximately the same as their diameter; second is very fine, punctures almost touching. Pubescence recumbent or semi-erect, long, inclined more or less forwards. Anterior part of head with shallow deepening. Clypeus with shallow transverse depression. Eyes large, globular with short erect sparse pubescence. Frons 1.6 times as wide as diameter of eye, from dorsal view. Antennae consisting of eleven antennomeres, 3^rd to 10^th pectinate (Figure 19a). First antennomere robust, twice as long as wide; second smallest, one-half as long as first, almost as wide as long. 3^rd 1.4 times as wide as long. 4^th to 8^th 2.1 as wide as long; 9^th and 10^th 1.7 times as wide as long. Apical antennomere longest, oblong oval, 5 times as long as wide. All antennomeres on margin with short erect dense setae. Apical maxillary palpomere long, spindle shaped.

Pronotum convex, matt shiny, rounded, transverse (ratio length:width of pronotum 0.8); widest on one half, but only slightly. Base of pronotum finely bordered. Middle of pronotum at base with small, blunt swelling, posteriorly slightly sharpened. Surface of pronotum with double punctation: one coarse, dense, umbilicate, distance between punctures approximately one-half their diameter; other one is very fine, punctures almost touching. Pubescence short, sparse, recumbent, inclined more or less forwards.

Scutellum almost triangular, narrow, 1.4 times as long as wide, dense recumbent pubescence, inclined backwards.

Elytra oval, transversally convex, shiny, with distinct humeri. Each elytron with five fine costae, almost invisible, but apex more distinct. Surface of elytra with double punctation: one coarse, dense, umbilicate, distance between punctures approximately the same as their diameter; the other one is very fine, punctures almost touching. Pubescence relatively sparse, recumbent or semi-erect, inclined backwards. Posterior margin of each elytron with approximately 25 small teeth.

Legs stout, with short and dense recumbent pubescence. All tarsi robust, same length as tibia. 1^st metatarsomere as long as 2^nd and 3^rd together, same width, slightly emarginate on top, 4^th slightly shorter than previous, more emarginate, almost to 2/3 of their length. 5^th same length as 3^rd and 4^th together, rectangular, wider on the top, with two large claws, without teeth.

For aedeagus see Figure 28.

Female. Habitually the same as male, only antennae serrate (Figure 19b). 1^st antennomere robust with dense long erect hairs. 2^nd small, as wide as 1^st, half as long as previous, as long as wide. Antennomeres 3^th to 10^th serrate. 3^rd and 4^th twice longer than wide; 5^th 2.3 longer than wide; 6^th twice longer than wide; 7^th 1.7 times longer than wide; 8^th to 10^th twice longer than wide. Apical antennomere longest, oblong oval, 3.3 times longer than wide. Body length 6.8 mm, maximum width 2.9 mm. Ratio length:width of elytra 1.8.

Patronym, dedicated to our friend and colleague Maxwell VL Barclay (Natural History Museum, London).

Unknown.

This species is found in the western part of Madagascar (Figure 10).

Figures 1–9. 

Habitus. 1C. (C.) barclayi sp. n. 2C. (C.) dimbyi sp. n. 3C. (C.) fasciata sp. n. 4C. (C.) lalae sp. n. 5C. (C.) madagascarensis sp. n. 6C. (C.) mamyi sp. n. 7C. (C.) njakai sp. n. 8C. (C.) obesa sp. n. 9C. (C.) rindrai sp. n.

Holotype male: Madagascar, Mahajanga prov., Mahajamba riv., Ampatika env., 17.–19.xi.1995, I. Jeniš lgt. (FGMRI). Paratype(1): 1 male, Madagascar, Mahajanga prov., Ambodimanga, Ankolia riv., 14.–15.xi.1995, J. Stolarczyk lgt. (FGMRI).

The species is similar to C. (C.) humeralis Pic, 1926, but differs by the lighter colour of the elytra and absence of lighter coloured humeri. Fully differs by shape of the aedeagus. Fully differs by shape of the aedeagus. For differences from other Madagascan species, see key.

Male (holotype). Elongate-elliptical, transversally convex. Body length 5.9 mm, maximum width 2.9 mm (Figure 2). Ratio length:width of elytra 1.6. Body light brown, head and pronotum brown, antennae and legs partly darker. Pubescence white.

Head matt-shiny, with double punctation – one coarse, dense, umbilicate, distance between punctures approximately the same as their diameter; other is very fine, punctures almost touching. Pubescence recumbent or semi-erect, long, mostly inclined forwards, partly to centre of head, on vertex backwards. Clypeus with shallow, transverse depression. Eyes large, globular with short erect sparse pubescence. Frons twice as wide as diameters of eye, in dorsal view. Antennae consisting of eleven antennomeres; 3^rd to 10^th pectinate (Figure 20). 1^st antennomere robust, twice as long as wide; 2^nd smallest, only 1/3 as long as 1^st, as long as wide, the same width as 1^st. 3^rd 1.3 times as wide as long; 4^th and 5^th 2.1 times as wide as long; 6^th, 7^th and 9^th 1.9 times as wide as long; 8^th twice wider as long; 10^th 1.6 times as wide as long. Apical antennomere longest, oblong oval, 5.7 times as long as wide. All antennomeres with short recumbent pubescence, only 1^st and 2^nd with a few long semi-erect setae. Apical maxillary palpomere long, spindle shaped.

Pronotum convex, matt-shiny, transverse (ratio length:width of pronotum 0.8); widest in posterior 2/3. Base of pronotum finely bordered. Middle of pronotum at base with a small blunt swelling, posteriorly slightly sharpened. Surface of pronotum with coarse, dense, umbilicate punctation, distance between punctures smaller than their diameter. Pubescence long, sparse, recumbent, inclined more or less forwards.

Scutellum large, longitudinally trapezoidal, 1.2 times as long as wide, densely recumbent pubescence, inclined backwards, surface shinning with fine, dense punctures.

Elytra oval, transversally convex, shiny, with distinct humeri. Each elytron with five very fine costae. Surface of elytra irregularly punctated with punctures of different diameters, coarse, dense, umbilicate. Pubescence relatively sparse, recumbent, on sides also semi-erect, inclined backwards. Posterior margin of each elytron with approximately 25 very small teeth.

Legs stout, with short and dense recumbent pubescence. Mesotibia on the apex with short forked projection. All tarsi robust, the same length as tibia. 1^st metatarsomere as long as 2^nd and 3^rd together, the same width, slightly emarginate on top, 4^th slightly shorter than previous, more emarginate, almost to 2/3 of their length. 5^th the same length as 3^rd and 4^th together, rectangular, wider on the top, with two large claws, without teeth.

For aedeagus see Figure 29.

Female. Unknown.

Without visible variability.

Patronymic, dedicated to Dr Dimby Raharinjanahary from Madagascar National Parks, Antananarivo (Chargé des Bases de données de suivibiodiversité et recherche).

Unknown.

This species is found in the northwestern part of Madagascar (Figure 11).

Figures 10–18. 

Maps of distribution. 10C. (C.) barclayi sp. n. 11C. (C.) dimbyi sp. n. 12C. (C.) fasciata sp. n. 13C. (C.) lalae sp. n. 14C. (C.) madagascarensis sp. n. 15C. (C.) mamyi sp. n. 16C. (C.) njakai sp. n. 17C. (C.) obesa sp. n. 18C. (C.) rindrai sp. n.

Holotype male: Madagascar, Antananarivo prov., Manankazo env., 15.–17.xii.1996, I. Jeniš lgt. (FGMRI).

The species is similar to C. (C.) lineatipennis Pic, 1926, which has black coloured elytra, and C. (C.) costipennis Kolbe, 1897, C. (C.) flabellicornis Pic, 1936 and C. (C.) multistriata Pic, 1952 whose males have pectinated antennae. Differs also by shape of the aedeagus. For differences from other Madagascan species, see key.

Male (holotype). Elongate-elliptical, transversally convex. Body length 6.0 mm, maximum width 2.6 mm (Figure 3). Ratio length:width of elytra 1.7. Body, including antennae, maxillary and labial palpi and legs, brown. Only pronotum piceous brown. Pubescence white.

Head shiny, with double punctation – first coarse, dense, umbilicate, distance between punctures approximately the same as their diameter; other very fine, punctures almost touching. Pubescence more or less recumbent, long, inclined backwards; on vertex inclined backwards. Clypeus with transverse depression. Eyes large, globular with short erect sparse pubescence. Frons 3 times as wide as diameters of the eye, from dorsal view. Antennae probably consisting of eleven antennomeres (they are damaged, only 7 antennomeres remain), from 4^th pectinate (Figure 21). 1^st antennomere robust, twice as long as wide; 2^nd as wide as 1^st, 0.3 as long as 1^st, 0.8 times as wide as long. 3^rd strongly serrate, 1.1 times as wide as long. 4^th and 5^th 2.5 times as wide as long. 6^th 3 times as wide as long; 7^th 2.7 times as wide as long. All antennomeres with very short recumbent dense pubescence, 1^st also with sparse long semi-erect setae. Apical maxillary palpomere long, slim, spindle shaped.

Pronotum convex, matt-shiny, transverse (ratio length:width of pronotum 0.7); widest in middle. Middle of the pronotum with blunt small swelling. Surface of pronotum with coarse, dense, umbilicate punctuation; punctures almost touching. Pubescence long, dense, semi-erect, inclined more or less from middle of pronotum to all sides.

Scutellum large, triangular, narrow, 1.2 times as long as wide, very densely recumbent pubescence, inclined backwards, surface shining, finely punctated; punctures almost touching.

Elytra oval, transversally convex, shining, humeri almost absent. Each elytron with six fine costae, covered with white recumbent dense pubescence, inclined backwards and from sides of costa to their centre. Surface of elytra with double punctation – one coarse, dense, umbilicate, almost touching; other is very fine, punctures also almost touching. Pubescence between stripes relatively sparse, recumbent or semi-erect, inclined backwards. Posterior margin of each elytron with approximately 20 small teeth, almost invisible.

Legs stout, with long, dense, recumbent pubescence. All tarsi robust, same length as tibia. 1^st metatarsomere as long as 2^nd and 3^rd together, same width, slightly emarginate on top, 4^th slightly shorter than previous, more emarginate, almost to 2/3 of their length. 5^th the same length as 3^rd and 4^th together, rectangular, wider on the top, with two large claws, without teeth.

For aedeagus see Figure 30.

Female. Unknown.

Derived from the rows of dense recumbent hairs on elytra, from Latin word fascia, meaning stripe.

Unknown.

This species is found in the central part of Madagascar (Figure 12).

Figures 19–27. 

Antennae. 19C. (C.) barclayi sp. n. – a male, b female 20C. (C.) dimbyi sp. n. – male 21C. (C.) fasciata sp. n. – male 22C. (C.) lalae sp. n. – a male, b female 23C. (C.) madagascarensis sp. n. – a male, b female 24C. (C.) mamyi sp. n. – male 25C. (C.) njakai sp. n. – male 26C. (C.) obesa sp. n. – female 27C. (C.) rindrai sp. n. – male.

Holotype male: Madagascar, Mahajanga prov., Mahajamba riv., Ampatika env., 17.–19.xi.1995, I. Jeniš lgt. (FGMRI). Paratypes (5): 2 males, 1 female, the same data as holotype; 2 males, Madagascar, Mahajanga prov., Ampatika env., 17.–20.xii.1995, J. Stolarczyk lgt. (FGMRI).

This species is similar to C. (C.) humeralis Pic, 1926, but differs by the lighter colour of the elytra. Fully differs by shape of the aedeagus. For differences from other Madagascan species, see key.

Male (holotype). Elongate-elliptical, transversally convex. Body length 7.0 mm, maximum width 2.9 mm (Figure 4). Ratio length:width of elytra 1.7. Body dark brown; antennae, maxillary and labial palpi and legs lighter. Pubescence white.

Head matt, clypeus shiny, with coarse, dense, umbilicate punctation; distance between punctures approximately the same as their diameter. Pubescence recumbent, long, dense, inclined mostly forwards. Clypeus with shallow transverse depression. Eyes large, globular with long erect sparse pubescence. Frons 2.1 times as wide as diameter of eye, from dorsal view. Antennae consisting of eleven antennomeres, 3^rd to 10^thpectinate (Figure 22a). 1^st antennomere robust, three times as long as wide; 2^nd smallest, twice shorter than 1^st, as long as wide, almost same width as 1^st. 3^rd 0.8 times shorter than wide; 4^thand 6^th to 8^th 0.5 times shorter than wide; 9^th and 10^th 0.6 times shorter than wide and the 10^th 0.7 times shorter than wide. Apical antennomere longest, oblong oval, 5 times as long as wide. All antennomeres with short recumbent pubescence, only 1^st and 2^nd with a few long semi-erect setae. Apical maxillary palpomere long, spindle shaped.

Pronotum convex, matt, transverse (ratio length:width of pronotum 0.7); widest in posterior 2/3. Base of pronotum finely bordered. Middle of pronotum in posterior part with blunt small swelling, posteriorly slightly sharpened. Surface of pronotum with coarse, dense, umbilicate, distance between punctures the same as their diameter. Pubescence short, sparse, recumbent, inclined more or less forwards, in posterior part of pronotum backwards.

Scutellum large, longitudinally rectangular, 1.3 times as long as wide, densely recumbent pubescence, inclined backwards, surface shinning with fine dense puncture.

Elytra oval, transversally convex, shiny, with distinct humeri. Each elytron with fine costae. Surface of elytra irregularly wrinkled, with double punctation – one coarse, dense, umbilicate, punctures almost touching; other is very fine, punctures also almost touching. Pubescence relatively sparse, recumbent, on sides also semi-erect and sporadically also erect, inclined backwards. Posterior margin of each elytron with approximately 25 very small teeth.

Legs stout, with short and dense recumbent pubescence. All tarsi slim, slightly shorter than tibia. 1^st metatarsomere as long as 2^nd and 3^rd together, and same length as 5^th. 2^nd the same length as 3^rd and 4^th together. 4^th emarginate approximately to ½ of their length. 5^th long and robust with two large claws, without teeth.

For aedeagus see Figure 31.

Female. Habitually the same as male, only antennae serrate (Figure 22b). Body length 8.1 mm, maximum width 3.2 mm.

Body length 5.4–8.1 mm, maximum width 2.2–3.2 mm.

Patronym, dedicated to Dr Lala Harivelo Ravaomanarivo Raveloson (University of Antananarivo, Faculty of Sciences, Department of Entomology).

Unknown.

This species is found in the northwestern part of Madagascar (Figure 13).

Figures 28–35. 

Aedeagus in dorsal viev. 28C. (C.) barclayi sp. n. 29C. (C.) dimbyi sp. n. 30C. (C.) fasciata sp. n. 31C. (C.) lalae sp. n. 32C. (C.) madagascarensis sp. n. 33C. (C.) mamyi sp. n. 34C. (C.) njakai sp. n. 35C. (C.) rindrai sp. n.

Holotype male: Madagascar, Mahajanga distr., Ampatika env., 17.–20.xi.1995, J. Stolarczyk lgt. (FGMRI). Paratypes (21): 4 males and 1 female, the same data as holotype (FGMRI); 10 males, Madagascar, Morondava distr., Kirindy, 23.–25.xi.1997, J. Stolarczyk lgt. (FGMRI 4 ex., LBVC 2 ex., MTDC 2 ex., NHMUK 2 ex.); 1 male: Madagascar, Mahajanga distr., Ambodimanga env., 14.–16.xi.1995, J. Stolarczyk lgt. (FGMRI); 2 males: Madagascar, Morondava distr., Maronfandilia, 4.v.1995, J. Stolarczyk lgt. (FGMRI); 2 male: Madagascar, Mahajanga prov., Mahajamba riv., Ampatika env., 17.–19.xi.1995, I. Jeniš lgt. (FGMRI); 1 female: Madagascar, Toliara env., 23.–27.xi.1996, J. Stolarczyk lgt. (FGMRI).

This species is similar to C. (C.) humeralis Pic, 1926, but differs by the lighter colour of the elytra and missing lighter humeri. Both sexes have pectinate antennae, while the female of C. (C.) humeralis Pic, 1926 has serrate antennae. Fully differs by shape of the aedeagus. For differences from other Madagascan species, see key.

Male (holotype). Elongate-elliptical, transversally convex. Body length 6.0 mm, maximum width 2.5 mm (Figure 5). Ratio length:width of elytra 1.6. Whole body brown, only antennae, palp slightly lighter and pronotum slightly darker. Pubescence white.

Head shiny, with double punctation – one coarse, dense, umbilicate, distance between punctures approximately the same as their diameter, sometimes almost touching; other one is very fine, punctures almost touching. Pubescence recumbent or semi-erect, long, inclined mostly forwards. Clypeus with shallow transverse depression. Eyes large, globular with short erect sparse pubescence. Frons twice as wide as diameters of the eye, from dorsal view. Antennae consisting of eleven antennomeres, 4^th to 10^thpectinate (Figure 23a). 1^st antennomere robust, twice as long as wide; 2^nd smallest, only 1/3 long as 1^st, as wide as long, same width as the 1^st. 3^rd serrate, as long as wide; 4^th to 8^th twice long as wide; 9^th 1.7 times as wide as long; 10^th 1.5 times as wide as long. Apical antennomere longest, oblong oval, 6.6 times as long as wide. All antennomeres with short recumbent pubescence, only 1^st with a few long semi-erect setae. Apical maxillary palpomere long, spindle shaped.

Pronotum convex, matt-shiny, transverse (ratio length:width of pronotum 0.7); widest in middle. Base of pronotum finely bordered. Middle of pronotum at base with blunt small swelling, posteriorly slightly sharpened. Surface of pronotum with double punctation – one coarse, dense, umbilicate, distance between punctures approximately the same as their diameter; other one is very fine, punctures almost touching. Pubescence long, sparse, recumbent, inclined more or less to middle of pronotum.

Scutellum large, longitudinally trapezoidal, narrow, almost as long as wide, densely recumbent pubescence, inclined backwards, surface almost invisible.

Elytra oval, transversally convex, shining, with distinct humeri. Each elytron with five very fine costae, more distinct on second half of elytron. Surface of elytra irregular punctated, puncture coarse, dense, umbilicate. Pubescence relatively sparse, recumbent, inclined backwards. Posterior margin of each elytron with approximately 25 very small teeth.

Legs stout, with short and dense recumbent pubescence. All tarsi robust, same length as tibia. 1^st metatarsomere as long as 2^nd and 3^rd together, same width, slightly emarginate on top, 4^th slightly shorter than previous, more emarginate, almost to 2/3 of their length. 5^th is same length as 3^rd and 4^th together, rectangular, wider on the top, with two large claws, without teeth.

For aedeagus see Figure 32.

Female. Antennae less pectinate than in male (damaged, only six antennomeres remain – Figure 23b). Body length 5.7 mm, maximum width 2.1 mm.

Body length 5.7–7.1 mm, maximum width 2.1–2.8 mm.

Latin adjective, referring to the occurrence of the new species in Madagascar.

Unknown.

This species is found in the western part of Madagascar (Figure 14).

Holotype male: Madagascar, Antananarivo prov., Manankazo env., 15.–17.xii.1996, I. Jeniš lgt. (FGMRI).

Differs from other species of this genus from sub-saharan and southern African regions by a lack of elytral costae. Fully differs by shape of the aedeagus. For differences from other Madagascan species, see key.

Male (holotype). Elongate-elliptical, transversally convex. Body length 3.9 mm, maximum width 1.6 mm (Figure 6). Ratio length:width of elytra 1.7. Body brown, head and pronotum darker, antennae lighter. Pubescence white.

Head shining, with coarse, dense, umbilicate punctated, distance between punctures approximately the same as their diameter. Pubescence recumbent, short, sparse, inclined mostly forwards. Clypeus with shallow transverse depression. Eyes large, globular with very short erect sparse pubescence, almost invisible. Frons 1.3 times as wide as diameter of the eye, from dorsal view. Antennae probably consisting of eleven antennomeres (they are damaged, only 6 antennomeres remain – Figure 24), 3^rd to 6^thpectinate. 1^st antennomere robust, three times as long as wide; 2^nd smallest, 3 times shorter than 1^st, as long as wide, same width as 1^st. 3^rd 1.2 times wider as long; 4^th 1.3 times wider than long; 5^th and 6^th 2.2 times wider than long. Other antennomeres are slightly damages or missing. All antennomeres without pubescence. Apical maxillary palpomere short, spindle shaped.

Pronotum convex, matt-shiny, transverse (ratio length:width of pronotum 0.6); widest in middle. Base of pronotum finely bordered. Pronotum without swelling. Surface of pronotum with coarse, dense, umbilicate, distance between punctures smaller than their diameter. Pubescence long, sparse, recumbent, inclined more or less forwards.

Scutellum large, longitudinally almost rectangular, 1.1 times as long as wide, densely recumbent pubescence, inclined backwards, surface shinning with fine dense puncture.

Elytra oval, transversally convex, shining, humeri almost indistinct. Each elytron with only very fine quasi-costae. Surface of elytra with double punctation – one coarse, dense, umbilicate, punctures almost touching; other one is very fine, punctures also almost touching. Pubescence relatively sparse, recumbent, on sides also semi-erect, inclined backwards. Posterior margin of each elytron with approximately 25 very small teeth.

Legs stout, with short and dense recumbent pubescence. All tarsi slim, 1.2 as long as tibia. 1^st metatarsomere as long as 2^nd to 4^th together, and same length as 5^th. 2^nd is same length as 3^rd and 4^th together. 4^th only slightly emarginate. 5^th long and slim with long slim claws, without teeth.

For aedeagus see Figure 33.

Female. Unknown.

Patronym, dedicated to Dr Mamy A Rakotoarijaona from Madagascar National Parks, Antananarivo (Directeur des Opérations).

Unknown.

This species is found in the central part of Madagascar (Figure 15).

Holotype male: Madagascar, Toliara prov., Tsimanampetsotsa N. P., Mitoho camp, 24°02.898'S, 43°45.138'E, 10 m a. s. l., 12.–13.i.2014, M. Trýzna leg. Paratypes (15): 1 male: the same data as holotype; 13 males: Madagascar, Toliara prov., Tsimanampetsotsa N. P., Andranovao camp, 24°01.505'S, 43°44.306'E, 15 m a. s. l., 14.–15.i.2014, M. Trýzna leg. (FGMRI 7 ex., LBVC 2 ex., MTDC 2 ex., NHMUK 2 ex.).

This species is similar to C. (C.) humeralis Pic, 1926, but differs by the lighter colour of the elytra and missing lighter humeri. Fully differs by shape of the aedeagus. For differences from other Madagascan species, see key.

Male (holotype). Elongate-elliptical, transversally convex. Body length 5.3 mm, maximum width 2.1 mm (Figure 7). Ratio length:width of elytra 1.8. Whole body dark brown, only antennae, maxillary and labial palpi and humeri on elytra moderately lighter. Pubescence yellowish-white.

Head matt-shiny, with double punctation – one coarse, dense, umbilicate, distance between punctures approximately the same as their diameter; other one very fine, punctures almost touching. Pubescence recumbent or semi-erect, short, inclined backwards; on sides of head semi-erect and long, inclined forwards. Clypeus with shallow transverse depression. Eyes large, globular with short erect sparse pubescence. Frons twice as wide as diameters of eye, from dorsal view. Antennae consisting of eleven antennomeres, 4^th to 10^th pectinate (Figure 25). 1^stantennomere robust, twice as long as wide; 2^nd smallest, only one-half length of 1^st, as long as wide, slightly narrower than 1^st. 3^rd serrate, as long as wide; 4^th and 5^th 1.8 times wider than long; 6^th and 7^th 1.5 times wider than long; the 8^th and 9^th 1.3 times wider as long; and 10^th 1.1 times as wide as long. Apical antennomere is longest, oblong oval, 4.3 times as long as wide. All antennomeres on margin with short erect dense setae. Apical maxillary palpomere long, spindle shaped.

Pronotum convex, matt-shiny, rounded, transverse (ratio length:width of pronotum 0.7); widest at 2/3 posteriorly. Base of pronotum finely bordered. Middle of pronotum at base with blunt small swlling, posteriorly slightly sharpened. Surface of pronotum with double punctation, one coarse, dense, umbilicate, distance between punctures approximately the same as their diameter; other one is very fine, punctures almost touching. Pubescence long, sparse, recumbent, inclined more or less to middle of pronotum.

Scutellum triangular, narrow, 1.3 times as long as wide, very densely recumbent pubescence, inclined backwards, surface is not visible.

Elytra oval, transversally convex, shining, with distinct humeri. Each elytron with five fine costae, almost invisible, but apex more distinct. Surface of elytra with double punctation, one coarse, dense, umbilicate, distance between punctures approximately the same as their diameter; other one is very fine, punctures almost touching. Pubescence relatively sparse, recumbent or semi-erect, inclined backwards. Posterior margin of each elytron with approximately 25 small teeth.

Legs stout, with short and dense recumbent pubescence. All tarsi robust, same length as tibia. 1^st metatarsomere as long as 2^nd and 3^rd together, same width, slightly emarginate on top, 4^th slightly shorter than previous, more emarginate, almost to 2/3 of their length. 5^th is same length as 3^rd and 4^th together, rectangular, wider on the top, with two large claws, without teeth.

For aedeagus see Figure 34.

Female. Unknown.

Body length 4.7–7.1 mm, maximum width 1.8–2.8 mm.

Patronym, dedicated to Adolphe Randrianjaka (University of Antananarivo, Faculty of Sciences, Department of Entomology), whom we called Njaka.

Unknown. All specimens were collected at light.

This species is found in the southwestern part of Madagascar (Figure 16).

Holotype female: Madagascar, Mahajanga prov., Ampatika env., Mahajamba riv., 10.–12.xii.1996, I. Jeniš lgt. (FGMRI).

Differs from other African species by the shape of the body, which is very arched. For differences from other Madagascan species, see key.

Female (holotype). Short, elongate-elliptical, extremely strongly transversally convex (any other species from genus Clada Pascoe, 1887 is not so convex). Body length 8.0 mm, maximum width 4.4 mm (Figure 8). Ratio length:width of elytra 1.6. Body dark brown, pronotum piceous-black, legs dark brown, antennae and maxillary and labial palpi lighter, brown. Pubescence yellowish white.

Head matt; dense, coarse, umbilicate punctation, with long recumbent or semi-erect dense pubescence, with sparse long erect setae, inclined more or less forwards, only on vertex partly inclined to middle or backwards. Clypeus with deep transversal furrow, frons flattened. Eyes large, globular with short erect sparse brown pubescence. Frons wide, 2.9 times as wide as diameter of eye (from dorsal view). Antennae consisting of eleven antennomeres, serrate (Figure 26). 1^st antennomere robust, twice as long as wide, with dense long erect hairs; 2^nd small, as wide as 1^st, only one-half of their length, as long as wide. 3^rd slightly serrate, 1.5 times as long as wide. Antennomeres 4^th to 10^th serrate; 4^th 1.1 times as long as wide, 5^th 1.5 times as long as wide; 6^th 1.3 times as long as wide, 7^th to 10^th 1.6 times as long as wide, 11^th oblong oval, 2.6 times as long as wide. Apical maxillary palpomere long, spindle shaped.

Pronotum convex, matt shining, transverse (ratio length:width of pronotum 0.7), widest in last third. Base of pronotum finely bordered. Middle of pronotum at base with high blunt swelling, on their sides shallow, almost invisible rounded depression. Surface of pronotum coarsely, densely, umbilicate punctate, distance between punctures smaller than their diameter, almost touching. Pubescence short, recumbent or semi-erect, inclined largely backwards, on sides inclined obliquely backward, on anterior margin inclined from sides to middle; from anterior margin to swelling in middle arranged to narrow strip.

Scutellum large, almost triangular (on top slightly rounded), 1.2 times as long as wide. Surface distinct with dense and coarse umbilicate punctation, with short, dense, recumbent pubescence inclined backwards.

Elytra short oval, transversally strongly convex, shining, with distinct humeri. Each elytron slightly irregular bent, with fifth costae, which are only slightly visible (especially from lateral view). Surface of elytra with double punctation. One very coarse, dense, umbilicate, irregular, diameter between punctures smaller than their diameter. Other one relatively fine, dense; punctures almost touching. Pubescence short, sparse, inclined backwards.

Legs stout, with short and dense recumbent pubescence. All tarsi robust, same length as tibia. 1^st metatarsomere as long as 2^nd and 3^rd together, same width, slightly emarginate on top, 4^th slightly shorter than previous, more emarginate, almost to 2/3 of their length. 5^th is same length as 3^rd and 4^th together, rectangular, wider on the top, with two large claws, without teeth.

Male. Unknown.

Derived from the shape of body, from the Latin obesus for plump.

Unknown.

This species is found in the northwestern part of Madagascar (Figure 17).

Holotype male: Madagascar, Toliara prov., Toliara env., 23.–27.xi.1996, J. Stolarczyk lgt. (FGMRI).

This species is similar to C. (C.) humeralis Pic, 1926, but differs by the lighter colour of the elytra and missing lighter humeri. Fully differs by shape of the aedeagus. For differences from other Madagascan species, see key.

Male (holotype). Elongate-elliptical, transversally convex. Body length 6.6 mm, maximum width 2.5 mm (Figure 9). Ratio length:width of elytra 1.5. Body brown, pronotum darker; antennae, maxillary and labial palpi and legs lighter. Pubescence yellowish white.

Head matt-shiny, with double punctation – one coarse, dense, umbilicate, distance between punctures approximately the same as their diameter; other one is very fine, almost invisible, punctures almost touching. Pubescence semi-erect, long, in anterior part inclined forwards, in posterior part inclined more or less backwards. Clypeus with shallow transverse depression, shiny. Eyes large, globular with long erect dense pubescence. Frons 2.7 times as wide as diameter of the eye, from dorsal view. Antennae consisting of eleven antennomeres, 4^th to 10^th pectinate (Figure 27). 1^st antennomere robust, 2.5 times as long as wide; 2^nd smallest, almost triangular, only one-half long as the 1^st, as long as wide, slightly narrower as the 1^st. The 3^rd strongly serrate, as long as wide, 1.8 times as width of 1^st. 4^th to 9^th 1.4 times as wide as long; 10^th 0.9 times shorter as long. Apical antennomere is longest, oblong oval, 5.7 times as long as wide. All antennomeres on margin with short erect dense setae. Apical maxillary palpomere long, spindle shaped.

Pronotum convex, matt-shiny, rounded, transverse (ratio length:width of pronotum 0.8); widest at 2/3 posteriorly. Base of pronotum finely bordered. Middle of pronotum at base with blunt small swelling, posteriorly slightly sharpened. Surface of pronotum with double punctation – one coarse, dense, umbilicate; distance between punctures approximately one half of their diameter, some punctures almost touching; other one is very fine, punctures almost touching. Pubescence long, dense, semi-erect, inclined more or less to middle of pronotum, only on sides inclined to margin.

Scutellum triangular with blunt top, narrow, 1.8 times as long as wide, very sparse and short recumbent pubescence, inclined backwards.

Elytra oval, transversally convex, shiny, with distinct humeri. Each elytron with five fine costae, almost invisible, but apex more distinct. Surface of elytra with double punctation, one coarse, dense, umbilicate, distance between punctures approximately the same as their diameter; other one is very fine, punctures almost touching. Pubescence relatively sparse, recumbent partly also semi-erect, inclined backwards. Posterior margin of each elytron with approximately 25 small teeth.

Legs stout, with short and dense recumbent pubescence. All tarsi robust, same length as tibia. 1^st metatarsomere as long as 2^nd and 3^rd together, same width, slightly emarginate on top. 4^th slightly shorter than previous, more emarginate, almost to 2/3 of their length. 5^th is same length as 3^rd and 4^th together, rectangular, wider on the top, with two large claws, without teeth.

For aedeagus see Figure 35.

Female. Unknown

Patronym, dedicated to Mr Rindra Andriamahefasoa (Chef de Volet Conservation et Recherche, Andasibe-Mantadia National Park).

Unknown.

This species is found in the southwestern part of Madagascar (Figure 18).