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Taxonomic notes, together with illustrated characters, on the oriental species of the genus Macrocheilus Hope, 1838 (Carabidae, Helluonini) are provided. One new species, Macrocheilus deuvie sp. n. is described from the Philippines. A key to all species of Macrocheilus in the Oriental Region is also provided.
Coleoptera, Carabidae, Helluonini, Macrocheilus, Oriental Region, new species
The genus Macrocheilus Hope, 1838 is composed of Oriental, Palaearctic and Ethiopian species (
For the Oriental Macrocheilus,
The aim of this paper is to provide taxonomic notes on all Oriental species of Macrocheilus by means of checking most of the type materials and a few other materials. As a result of the study, the examined materials are preserved in the Museum National d’Histoire Naturelle, Paris, France (MNHN). One new species of Macrocheilus from the Philippines is described. In addition, a distribution map of the genus in the Oriental Region is provided.
Materials and methodsMaterials for this study were dry mounted specimens. Dissection of specimens was done following the standard technique described by
Abbreviations for the collections in which the type materials are deposited as follows:
LMN Leiden Museum, the Netherlands
MDSG Museum Dresden, Saxony, Germany
MGI Museum Genoa, Italy
MNHN Museum National d’Histoire Naturelle, Paris, France
NHML Natural History Museum, London, the U.K.
NMP National Museum Prague, Czech Republic
SCAU South China Agricultural University, Guangzhou, China
SNSD Staatliches Naturhist. Sammlungen Museum für Tierkund, Dresden, Germany
ZMUC Zoological Museum University of Copenhagen, Copenhagen, Denmark
Taxonomic treatmenthttp://species-id.net/wiki/Macrocheilus
Medium sized (length from 8.0 to 17.0 mm), elongate, whole body coarsely punctuate and pubescent, except for labrum and middle region of ventral side of head. Head with two supraorbital setae on each side; ligula fairly wide, deeply impressed beneath at sides of base; mentum deeply emarginated, with a long and slender tooth; palpi varied in form; labrum extraordinarily or well developed; mandibles dorsally covered by labrum or not covered; antennae stout and flat, densely pubescent from antennomere 5. Pronotum truncate-cordiform or quadrate, basal margin more or less produced backwards in middle; lateral margin with two setae, one just before middle, and the other at hind angle. Elytra with deep striae and setiferous pores; intervals slightly or rather convex, interval 8 usually wide. Metepisterna elongate and very narrow in all species. Tarsomere 4 emarginate. Wings fully developed. No externally visible sexual dimorphic characters present. Median lobe of aedeagus varied in form. Parameres of aedeagus quite similar, elongate, the left one larger than the right one.
Macrocheilus spp., with larger body size, simple 4th tarsomeres, and non-securiform labial palpomere are distinctly different from Colfax spp. (smaller body size, securiform labial palpomere) and Creagris spp. (bilobed 4th tarsomere; smaller body size). Functional wings and the occurrence of a long spiniform median tooth of mentum of Macrocheilus distinguish them from Omphra spp. (which are brachypterous and have a short median tooth of the mentum).
Oriental Region (China, Vietnam, Laos, Cambodia, Myanmar, India, Sri Lanka, the Philippines, Malaysia and Indonesia), Palaearctic Region (Pakistan, Syria, Asia Minor), Ethiopian Region (Ethiopia, Tanzania, Uganda, Senegal, Guinea, Guinea-Bissau, Sierra Leone, Togo, Nigeria, Central Africa, Cameroon, Gabon, Congo, Zimbabwe, Angola, South Africa, Madagascar).
1 | Elytra without spots | 2 |
– | Elytra spotted | 3 |
2 | Head and pronotum red; ligula with apical outer angles rounded; apex of lateral lobes of mentum fairly acute (Fig. 9); labrum with apical margin not sinuate (Fig. 1). Length 6.5 mm | Macrocheilus bicolor Andrewes |
– | Whole body piceous; ligula with apical outer angles rectangular; apex of lateral lobes of mentum rounded (Fig. 10); labrum with apical margin plurisinuate (Fig. 2). Length 15.0 mm | Macrocheilus impictus (Wiedemann) |
3 | Maxillary palpomere 4 not flattened and dilated, lateral lobes of mentum rounded on outer margin, mandibles not exposed, lateral margin of labrum rounded, front margin of clypeus not or slightly emarginate in middle, elytron with one or two spots | 4 |
– | Maxillary palpomere 4 strongly flattened and dilated, lateral lobes of mentum sinuate behind middle or on anterior one-third, mandibles exposed, lateral margin of labrum distinctly sinuate on anterior one-third, front margin of clypeus deeply and widely emarginate in middle, elytron with one spot | 16 |
4 | Elytron with one spot | 5 |
– | Elytron with two spots | 10 |
5 | Labrum with anterior setae distinctly on upper surface margin | 6 |
– | Labrum with anterior setae close to or on the apical margin | 8 |
6 | Labrum with apex narrow (Fig. 3); mentum with median tooth stout and wide, strongly sinuate at middle of lateral margins (Fig. 11). Length 25.0 mm | Macrocheilus immanis Andrewes |
– | Labrum with apex wide; mentum with median tooth slender, almost straight at sides | 7 |
7 | Elytral spot transverse and almost rectangular (Fig. 46); median tooth of mentum with four or five setae (Fig. 12). Length 16.0 mm | Macrocheilus niger Andrewes |
– | Elytral spot cruciform (Fig. 47); median tooth of mentum with two setae. Length 14.5 mm | Macrocheilus asteriscus (White) |
8 | Elytral spot rounded, maxillary palpomere 4 roundly elongate; anterior setae of labrum close to apical margin. Length 12.5–14.0 mm | Macrocheilus vitalisi Andrewes |
– | Elytral spot oblong, maxillary palpomere 4 short and stout (Fig. 21); anterior setae of labrum along or on apical margin | 9 |
9 | Elytral spot covering intervals 3–7, anterior seta of labrum on apical margin (Fig. 5). Length 13.0 mm | Macrocheilus binotatus Andrewes |
– | Elytral spot covering intervals 2–7, anterior seta of labrum along apical margin. Length 10.0 mm | Macrocheilus macromaculatus Louwerens |
10 | Labrum with anterior setae on apical margin; ligula thickened at apex | 11 |
– | Labrum with anterior setae beneath apex; ligula thin at apex | 13 |
11 | Labrum with apex wide; mentum with median tooth sinuate near apex on lateral margin, lateral lobes obtuse at apex. Length 15.5–17.0 mm | Macrocheilus gigas Zhao & Tian |
– | Labrum with apex pointed; mentum with median tooth not sinuate on lateral margin, lateral lobes sharp at apex | 12 |
12 | Body length 11.7–11.0 mm; elytral spots smaller (Fig. 51); labrum exceptionaly convex on anterior portion which results apex can not be seen; maxillary palpomere 4 strongly and roundly dilated on anterior half portion | Macrocheilus parvimaculatus Zhao & Tian |
– | Body length 12.0–12.5 mm; elytral spots larger (Fig. 52); labrum normally convex, apex visible (Fig. 6); maxillary palpomere 4 slightly dilated (Fig. 22) | Macrocheilus tripustulatus (Dejean) |
13 | Maxillary palpomere 4 strongly dilated | 14 |
– | Maxillary palpomere 4 not or slightly dilated | 15 |
14 | Head and pronotum reddish brown (Fig. 53); labrum relatively long; pronotum elongate; tibiae testaceous. Length 8.4 mm | Macrocheilus chaudoiri Andrewes |
– | Head and pronotum black; labrum short (Fig. 7); pronotum wide; tibiae black. Length 8.0 mm | Macrocheilus nigrotibialis Heller |
15 | Maxillary palpomere 4 slightly dilated; labrum not recurved at apex; clypeus with irregular setae on middle. Length 15.0 mm | Macrocheilus bensoni Hope |
– | Maxillary palpomere 4 not dilated (Fig. 24); labrum curved at anterior part (Fig. 8); clypeus almost glabrous on middle. Length 9.5 mm | Macrocheilus deuvie sp. n. |
16 | Elytral spots large (1.5~2.2 mm), nearly rectangular | 17 |
– | Elytral spots small (1.3~1.4 mm), not rectangular | 19 |
17 | Color brown; labrum with only three pairs of labral setae, apex pointed rounded; mandibles obtuse at apices; median tooth of mentum with lateral margin not sinuate. Length 10.8 mm | Macrocheilus fuscipennis Zhao & Tian |
– | Color black; labrum with four pairs of labral setae, apex widely rounded; mandibles sharp at apices; median tooth of mentum with lateral margin sinuate | 18 |
18 | Labrum with additional setae located between the anterior and intermediate setae (Fig. 8 in |
Macrocheilus solidipalpis Zhao & Tian |
– | Labrum with additional setae located before the anterior setae (Fig. 9 in |
Macrocheilus cheni Zhao & Tian |
19 | Labrum with anterior and intermediate setae distance from each other, apex pointed rounded (Fig. 10 in |
Macrocheilus quadratus Zhao & Tian |
– | Labrum with anterior and intermediate setae closed each other, apex widely rounded (Fig. 11 in |
Macrocheilus sinuatilabris Zhao & Tian |
http://species-id.net/wiki/Macrocheilus_bicolor
Figs 1, 9, 17, 37, 43Length 6.3–6.5 mm, width 2.5 mm. Head and prothorax red; elytra black or sometimes bluish black. Labrum (Fig. 1) semicircular in front, shortly depressed towards base, front pair of setae small and closely placed along the front margin, intermediate one at a distance from margin; ligula rectangular, with a wide and deep median impression, a pair of setae at a distance form apex depressed at base; apex truncate, outer apical angles rounded; mentum (Fig. 9) glabrous at base, both tooth and lobes elongate, slender and sharp at apex; tooth almost as long as lobes, two pairs of setae on base; lobes sinuate at a distance from apex along outer margin; maxillary palpi (Fig. 17) not dilated. Elytra without spots.
Labrum and clypeus of Macrocheilus (dorsal view): 1 Macrocheilus bicolor (holotype) 2 Macrocheilus impictus (male) 3 Macrocheilus immanis (holotype) 4 Macrocheilus niger (holotype) 5 Macrocheilus binotatus (female) 6 Macrocheilus tripustulatus (holotype) 7 Macrocheilus nigrotibialis (holotype) 8 Macrocheilus deuvie (holotype). Scale bar: 0.5 mm.
Mentum and Left maxillary palpi of Macrocheilus (ventral view): 9, 17 Macrocheilus bicolor (holotype) 10, 18 Macrocheilus impictus (male) 11, 19 Macrocheilus immanis (holotype) 12, 20 Macrocheilus niger (holotype) 13, 21 Macrocheilus binotatus (female) 14, 22 Macrocheilus tripustulatus (holotype) 15, 23 Macrocheilus nigrotibialis (holotype) 16, 24 Macrocheilus deuvie (holotype). Scale bar: 0.5 mm.
Female genitalia. Gonocoxite short, stout, inner margin arcuate and not sinuate, apex short and sharp (Fig. 37).
Aedeagus of Macrocheilus (left lateral and dorsal view) and Left gonopods of female genitalia (dorsal view): 25, 26, 38 Macrocheilus impictus 27, 28 Macrocheilus immanis (holotype) 29, 30, 39 Macrocheilus niger 31, 32, 41 Macrocheilus tripustulatus 33, 34, 42 Macrocheilus nigrotibialis (holotype) 35, 36 Macrocheilus deuvie (holotype) 37 Macrocheilus bicolor (holotype) 40 Macrocheilus binotatus. Scale bar: 0.5 mm.
Habiti of Macrocheilus (dorsal view): 43 Macrocheilus bicolor (holotype) 44 Macrocheilus impictus (male) 45 Macrocheilus immanis (holotype) 46 Macrocheilus niger (holotype) 47 Macrocheilus asteriscus (male) 48 Macrocheilus vitalisi (holotype) 49 Macrocheilus binotatus (female) 50 Macrocheilus gigas (holotype) 51 Macrocheilus parvimaculatus (holotype).
This species is allied to the next species, Macrocheilus impictus (Wiedemann). Both differ from other species in the absence of elytral spot.
Holotype: 1 female, labeled “Kaoeqaoe, 740, Type, Macrochilus bicolor Type Andr., H. E. Andrewes det.; H. E. Andrewes Coll. B. M. 1945–97.; Macrochilus bicolor Andrewes, 1920”, deposited in NHML. 1 ex, sex unknown (the abdomen missing), labeled “Bangalore, Chikkangalur, Taboourel, 1900; Macrocheilus bicolor Andrewes, H. E. Andrewes det.”, deposited in MNHN.
India.
http://species-id.net/wiki/Macrocheilus_impictus
Figs 2, 10, 18, 25, 26, 38, 44Length 14.5-15.0 mm, width 5.0-5.5 mm. Black. Labrum (Fig. 2) with front margin rounded and bisinuate, three pairs of setae close to margin, and front two pairs on sinuated area; mandibles slightly obtuse at apex; mentum (Fig. 10) irregularly setose in basal half, both tooth and lobes elongate and sharp at apex, tooth slightly shorter than lobes; maxillary palpomere 4 (Fig. 18) cylindrical and gradually dilated toward apex, rounded and obliquely truncate at apex. Elytra without spots.
Male genitalia. Median lobe dilated on dorsal side in middle partion, sinuate on ventral side; apical lamella elongate, not sinuate near apex, rounded at apex (Figs 25–26).
Female genitalia. Gonocoxite slender, five setae on dorsal surface, sharp at apex (Fig. 38).
Similar to Macrocheilus bicolor without elytral spots, distinctly differs by larger size, body black, sinuate front margin of labrum and plurisetose mental tooth.
1 male, labeled “Indes Orientales, Mts Kodeicanel, J. Castets 1886”; 1 male, “India, Bangalore. P.S. Nathan, 1936”; 1 male, “Punjab Baddia (Indes Angl.); G. Babault Avril 1914”; 1 male, “S. India, Medungadu, P.S. Nathan. 1936”; 3 males, “Java”, “Ex-Musaeo Chaudoir from Coll. Dejean”; 1 female, “Java”, “Ex-Musaeo Mniszech from Coll. Dejean”. All deposited in MNHN.
India (East India) and Indonesia (Java).
http://species-id.net/wiki/Macrocheilus_immanis
Figs 3, 11, 19, 27, 28, 45Length 24.7 mm, width 8.3 mm. Labrum (Fig. 3) elongate, three pairs of equidistant setae on upper surface near margin; ligula thickened, apex slightly narrowed, slightly emarginate in middle of front margin, deeply depressed near apex to form a median channel, with five pairs of setae along sides, hollowed out above with a median carina; mentum (Fig. 11) with both tooth and lobes stout, tooth shorter than lobes, contracted after middle, irregularly setose on ventral surface on basal half; maxillary palpomere 4 (Fig. 19) dilated, densely setose; labial palpomere 4 dilated, palpomere 3 not dilated inwards. Elytal spots nearly square, large, near the middle, cover intervals 2–7.
Male genitalia. Median lobe of aedeagus strongly dilated and stout, strongly sinuate near paramere, straight towards apex, apical lamera elongate and narrowed at apex (Figs 27–28).
This species is similar to Macrocheilus niger and Macrocheilus asteriscus in having anterior setae of labrum obviously on upper surface, but differs from the other two species by the large and almost square elytral spots and stout median tooth of mentum.
1 male, the holotype, labeled “Toungoo; Type; Macrochilus immanis, Type, Andr., H. E. Andrewes det.; Macrochilus immanis Andrewes, 1920”, deposited in NHML.
Myanmar.
http://species-id.net/wiki/Macrocheilus_niger
Figs 4, 12, 20, 29, 30, 39, 46Length 16.0–16.3 mm, width 6.0–6.2 mm. Labrum (Fig. 4) convex, with a short furrow on each side of base, narrowed and pointed in front, with three pairs of setae away from the margin; ligula thickened, apex truncate towards sides, apical margin slightly emarginate, deeply depressed towards base, with a small median impression near apex; mentum (Fig. 12) glabrous at base; median tooth shorter than lobes, rather narrow and with apex rather pointed, two pairs of setae at basal area; lateral lobes obtuse at apex. Palpi (Fig. 20) not dilated. Elytral spots transverse, close to the middle of interval 5, covering intervals 3–7.
Male genitalia. Median lobe stout, apical lamella short and round at apex (Figs 29–30).
Female genitalia. Gonocoxite subapically dilated, three setae on dorsal surface, sharp at apex (Fig. 39).
Similar to Macrocheilus asteriscus, but differs with the tooth of mentum plurisetose and elytral spot not cruciform.
1 female, the holotype, labeled “type, 11, H. L. Andrewes, Nilgiri Hills, H. E. Andrewes Coll., B.M. 1945–97.; Macrochilus niger Type-, Andr., H. E. Andrewes det.; Macrochilus niger Andrewes, 1920”, deposited in NHML. 1 male and 1 female, “Dehra-Dun 1940-45, Kumaon Himalaya, Liesenfeldt leg.”, deposited in MNHN.
India (Nilgiri Hills, Malabar, Madras and Bombay) and Sri Lanka.
http://species-id.net/wiki/Macrocheilus_asteriscus
Fig. 47Macrocheilus asteriscus differs from other species in having cruciform elytral spots, the slender median tooth of mentum and the narrow apex of ligula.
2 males, 1 female, “Hongkong” (MNHN); 2 males, “Hainan, Oct. 1979, Shaoming Zhuo leg.” (SCAU); 2 males, “Guangdong: Zhanjiang, Jul. 1982” (SCAU); 1 male, 1 female, “Guangdong: Zhanjiang, May, 1983” (SCAU). 1 male, 1 female, “Annam, Phuc-Son, Nov. to Dec., H, Fruhstorfer”, Central Vietnam (MNHN); 1 male, “Tonkin, P. Lemée, 1903–1906”, North Vietnam (MNHN); 1 male, “Laos. Mouhot” and “Janson Acq. 1884” (MNHN); 2 males, “Java, Preanger”, Indonesia (MNHN); 1 female, “Nilgherries” and “Ex. Musaeo H. W. Bates, 1892”, India (MNHN).
China, Vietnam, Laos, Myanmar, Indonesia and India.
http://species-id.net/wiki/Macrocheilus_vitalisi
Fig. 48Macrocheilus vitalisi is similar to Macrocheilus binotatus from Sumatra, but as stated by
1 female, the holotype, “China, Bowring 63·47*, 986 27/2/53” (NHML); 1 female, “Tonkin, Région de Hoa-Binh”, “Muséum Paris, 1932, A. de Cooman” (MNHN).
China, Laos, Vietnam, Borneo.
http://species-id.net/wiki/Macrocheilus_binotatus
Figs 5, 13, 21, 40, 49Length 14.0 mm, width 4.8 mm. Labrum (Fig. 5) with apex rounded and pointed, front setae on apical margin; mandibles covered by the labrum, sharp at apex; mentum (Fig. 13) glabrous at base, median tooth nearly as long as lobes, about five setae at basal half; maxillary palpomere 4 (Fig. 21) cylindrically dilated, labial palpomere 4 flat and dilated, labial palpomere 3 dilated inwards; ligula wide and rectangular, apical margin straight, with a wide median impression beneath apex, a seta on either side near apex. Elytral spots large and oblong, covering intervals 3–7 in the middle.
Female genitalia. Gonocoxite elongate, three setae on dorsal margin, sparsely setose on ventral surface; apex sharp (Fig. 40).
This species is similar to Macrocheilus macromaculatus having elytral spots oblong; and it differs from Macrocheilus macromaculatus in having the anterior setae of labrum on the apical margin.
1 female, “Paggar Alam, Sumatra, J. Bouchaud”, deposited in MNHN.
Indonesia (Sumatra).
http://species-id.net/wiki/Macrocheilus_macromaculatus
Length 10.0 mm, width 3.0 mm. Labrum large, semicircular anteriorly, with a flat depression on each sides, setae running along the sides in two small furrows; palpi short and stout, truncate at apex; mentum with a long, narrow, sharp median tooth, lateral lobes a little longer. Elytral spots oblong and covers intervals 2–7.
The above description is after
This species is similar to Macrocheilus binotatus, but the former is smaller in size and has the sides of elytra gently rounded behind, in contrast to the larger size and more sharply rounded hind region of elytra in Macrocheilus macromaculatus.
Indonesia (Java).
http://species-id.net/wiki/Macrocheilus_gigas
Fig. 50Macrocheilus gigas is similar to Macrocheilus parvimaculatus and Macrocheilus tripustulatus in having anterior seta of the labrum on the apical margin and the ligula thickened at apex which distinguishes these three species from other species with two spots on each elytron. But Macrocheilus gigas differs from the other two species by wide apex of labrum and having median tooth of mentum sinuate near apex on lateral margin.
1 male, the holotype, Guangdong: Zhanjiang, Jun.1983, deposited in SCAU; 1 male, Guangdong: Zhanjiang, Oct.1982, Zhichang Tan leg., deposited in SCAU; 2 males, Guangdong: Zhanjiang, July 1982, deposited in SCAU and MNHN.
China (Guangdong: Zhanjiang).
http://species-id.net/wiki/Macrocheilus_parvimaculatus
Fig. 51This species is easily distinguished from other species of Macrocheilus by its strongly convex labrum, maxillary palpomere 4 dilated in apical half and with small spots on elytra.
1 male, the holotype, Guangxi: Liuzhou: Luzhai, 26 May 1980, Shaozhou Ruan leg.; 1 male, same data as holotype. All specimens deposited in SCAU.
China (Guangxi).
http://species-id.net/wiki/Macrocheilus_tripustulatus
Figs 6, 14, 22, 31, 32, 41, 52Length 12.0–12.5 mm, width 4.0–4.3 mm. Labrum (Fig. 6) strongly convex on anterior part, rounded and pointed in front, front seta on apical margin, intermediate one on upper surface close to margin; mandibles sharp at apex; mentum (Fig. 14) irregular and densely setose, both tooth and lobes stout, tooth shorter than lobes, densely setose at basal half; palpi slender, palpomere 4 (Fig. 22) not dilated, densely setose, rounded and truncate at apex, labial palpomere 3 not dilated, bisetose inside; ligula strongly thickened and dilated, deeply depressed at sides, apex rounded, slightly emarginate in middle with a seta on either side. Elytra with two pairs of spots, front spot rounded, covering intervals 3–7 in the middle, hind spot close to apical inner angles, nearly rectangular, covering intervals 1–5; apex roundly truncate.
Male genitalia. Median lobe dilated in the middle ventrally, apical lamella long, wide and round at apex (Figs 31–32).
Female genitalia: Gonocoxite slender, setose on ventral surface, three setae on dorsal side, apex sharp (Fig. 41).
Macrocheilus tripustulatus can be distinguished from Macrocheilus parvimaculatus by the slender maxillary palpomere 4, greater convexity of labrum and larger elytral spots.
1 female, the holotype, “tripustulatus Dejean (non Fabr.), Java, Coll. Dejean, 3-pustulatus Wiedemann (Helluo). Fabr. (Brachinus), Western, Ex-Musaeo Chaudoir”; 1 male, “Java merid., 1500, 1891, H. Fruhstorfer.”; 1 male, “ Java”, “Ex-Musaeo Mniszech”; 1 female, “Carin Chebà, 900-1100 m, L. Fea, V Xii-88; Ex-Musaeo H.W.
52 Macrocheilus tripustulatus (holotype) 53 Macrocheilus chaudoiri (holotype) 54 Macrocheilus nigrotibialis (holotype) 55 Macrocheilus bensoni (male) 56 Macrocheilus deuvie (holotype) 57 Macrocheilus fuscipennis (holotype) 58 Macrocheilus solidipalpis (holotype) 59 Macrocheilus cheni (holotype) 60 Macrocheilus quadratus (holotype) 61 Macrocheilus sinuatilabris (holotype). Scale bar: 5.0 mm.
Myanmar and Indonesia (Java).
http://species-id.net/wiki/Macrocheilus_chaudoiri
Fig. 53Macrocheilus chaudoiri, Macrocheilus nigrotibialis, Macrocheilus bensoni and Macrocheilus deuvie are similar in having the anterior seta of the labrum beneath the apex and two pairs of elytral spots. This species is distinct from the other three species in having the head and pronotum reddish brown and maxillary palpomere 4 strongly dilated.
1 female, the holotype, “Ex-Musaeo Chaudoir; Macrocheilus Chaudoiri Andr., H.S. Andrewes det.; 3-maculatus Chaud., Deccan, Coll. Jeakes” (MNHN); 1 male, “Maissour, Sakrabail, IX 1897” (MNHN); 1 female, “Museum Paris, Cochinchine, Harmand 1872” (MNHN); 1 female, “Java” and “Museum Paris, Lakhon, Harmand 1878” (MNHN); 1 female, “Insl. Phiip.” and “Thorey” (MNHN).
China (Macao), Cambodia, Laos, Vietnam, the Philippines, Indonesia (Sumatra) and India.
http://species-id.net/wiki/Macrocheilus_nigrotibialis
Figs 7, 15, 23, 33, 34, 42, 54Length 8.0–10.1 mm, width 3.0–3.5 mm. Labrum (Fig. 7) convex, arcuate at apex, front setae beneath apex, intermediate one on apical margin, hind one close to middle margin; mandibles sharp at apex; mentum (Fig. 15) setose at base; median tooth triangular and shorter than lobes, with two pairs of setae at base; lobes obtuse at apex; maxillary palpomere 4 (Fig. 23) roundly dilated, labial palpomere 4 triangular in shape and dilated, 3 not dilated and bisetose on inner sides; ligula thickened, apical margin arcuate inwards, deeply depressed at sides, with a median impression close to apex, outer apical angles rounded, with a seta on either of median impression close to apex. Elytra with front spot large, just before middle, almost rounded, covering intervals 3–7 and extended to small part of 2 and 8; hind spot on inner angles, more or less triangular, covering intervals 1–5.
Male genitalia. Median lobe slender, apical lamella round (Figs 33–34).
Female genitalia. Gonocoxite slender, arcuate, with three or four setae on dorsal side, apex slightly obtuse (Fig. 42).
This species differs from following two species in having the tibiae black, maxillary palpomere 4 more dilated, the median lobe of male genitalia stouter and the apical lamella more rounded.
1 male, the holotype, “typus!”, “Drs. Sarasin N. Celebes Panot-Maimang”, “12623”, “Staatl. Museum fur Tierkunde. Dresden”, deposited in SNSD. 1 female, labeled “Nord Borneo Mont Kina Balu 5-8, 1903, John Waterstradt; Macrochilus nigrotibialis Heller, det. Andrewes”, deposited in MNHN.
Indonesia (Sumatra, Malaysia and Sulawesi).
http://species-id.net/wiki/Macrocheilus_bensoni
Fig. 55This species can be distinguished from Macrocheilus chaudoiri by the black head and pronotum and from Macrocheilus nigrobibialis by the slender maxillary palpomere 4.
1 male, “North China, 1884, Janson” (MNHN); 1 male, “North India, Coll. Benson, Ex-Musaeo H.W. Bates, 1892” (MNHN); 1 male, “Ind. Angl., Coimbatore Dt, Siruveni, VI. 1937” (MNHN); 1 female, “Ind. Angl., Mysore” (MNHN); 1 male, “Guangdong: Zhanjiang, Oct.1982, Zhichang Tan leg.” (SCAU); 2 males, “Guangdong: Yingde, 27 Mar.2003, Danyang Zhao leg.” (SCAU and MNHN); 1 male, Guangxi, Dec.1983” (SCAU); 1 male, “Yunnan: Jinghong, Jul. 1985” (SCAU); 1 female, “Hainan: Diaoluoshan, 26 Nov.1963” (SCAU).
China (Fujian, Jiangxi, Guangdong, Guangxi, Guizhou, Yunnan, Hongkong, Hainan), Laos, Vietnam, Myanmar, India and Sri Lanka.
urn:lsid:zoobank.org:act:0181841F-FB7C-4A7D-9612-AB0BFEAD91F3
http://species-id.net/wiki/Macrocheilus_deuvie
Figs 8, 16, 24, 35, 36, 56Length 9.5 mm, width 3.5 mm.
Black; ligula, antennomeres 1-4, a spot on vertex, lateral margin of pronotum and legs reddish brown; sides of ligula, palpi, antennomeres 5-11 and elytral spots brown.
Head convex; neck short and punctate on dorsal surface; frontoclypeal sulcus faint, frontal foveae short and shallow; clypeus with apical margin truncate, two setae on each side of apical outer angels, a row of 6 setae along apical margin, irregularly setose basally on each side; labrum (Fig. 8) convex anteriorly, apical margin rounded, front setae beneath near apex, middle one just on apical margin, hind one close to middle margin; mandibles covered by labrum, sharp at apex; mentum (Fig. 16) irregularly setose and punctate at base, median tooth triangular and shorter than lobes, with a pair of setae at base, lobes obtuse at apex; maxillary palpi (Fig. 24) not dilated, labial palpomere 3 with two setae on inner side; ligula thickened, apex deeply and widely emarginated in middle.
Pronotum flat; widest before middle; faint median line, median and apical impression distinct, basal foveae deep; lateral margin round in front, strongly sinuate near base; hind angles nearly rectangular, with a small obtuse tooth and an emargination before tooth.
Elytra flat, striae with large, close punctures and setae; intervals convex, with two rows of regular punctures and setae, interval 8 wider than others and densely and irregularly punctate and setose; spots small, front spot rounded, just before middle, covering intervals 3–6, hind spot rhombic, on inner apical angles, covering intervals 1–5.
Male genitalia. Median lobe dilated in middle on ventral margin; apical lamella elongated, rounded at apex (Figs 35–36).
This species is very similar to Macrocheilus bensoni, but differs by it’s smaller size, curved labrum at anterior part, clypeus glabrous on middle, pronotum with lateral margin strongly sinuate near base, and male genitalia dilated on ventral margin.
1 male, the holotype, “Philippines, Bohol. Ch. Semper”, deposited in MNHN.
This species is named in honor of Dr. Thierry Deuve (MNHN), a well known carabidologist.
The Philippines.
http://species-id.net/wiki/Macrocheilus_fuscipennis
Fig. 57This species is similar to Macrocheilus solidipalpis and Macrocheilus cheni in having the larger elytral spots, but easily distinguishable from them by the labrum without additional setae, mandibles obtuse at apex, median tooth of mentum with lateral margin not sinuate and body brownish.
1 male, the holotype, “Guangxi: Napo, 10 Oct.1970, by light trap”.
China (Guangxi: Napo).
http://species-id.net/wiki/Macrocheilus_solidipalpis
Fig. 58This species is similar to Macrocheilus cheni but easily distinguishable from the latter by the presence of additional setae between the anterior and anterior setae, the median tooth of the mentum with sinuate lateral margins in middle (sinuate on apical one-third in Macrocheilus cheni), the median lobe larger, and the apical lamella long and narrowed towards apex.
1 male, the holotype, “Guangxi: Dibei, Oct.1980, Xiuzhen Mao leg., by light trap”.
China (Guangxi: Dibei).
http://species-id.net/wiki/Macrocheilus_cheni
Fig. 59This species is similar to Macrocheilus solidipalpis and the differences from the latter were mentioned above.
1 male, the holotype, “Guangxi: Tengxian, Oct.1980”.
China (Guangxi: Tengxian).
http://species-id.net/wiki/Macrocheilus_quadratus
Fig. 60This species is easily distinguished from other species by the shape of pronotum.
1 male, the holotype, labeled “Guangxi: Cangwu, 1980, in paddy field”.
China (Guangxi: Cangwu).
http://species-id.net/wiki/Macrocheilus_sinuatilabris
Fig. 61Macrocheilus sinuatilabris is similar to Macrocheilus quadratus in having three pairs of setae on the labrum and small elytral spots. However, it differs from Macrocheilus quadratus in having smaller elytral spots, the median tooth of the mentum obtuse at its apex, the rounded apex of the labrum, the close positioning of front and intermediate labral setae, and the slender median lobe of the aedeagus.
1 male, the holotype, labeled “Guangxi: Fenghuangcheng, Sep.1981, by light trap”.
China (Guangxi: Fenghuangcheng).
Distribution of Macrocheilus in the Oriental RegionThe zoogeographical pattern of Macrocheilus is illustrated in Figure 62. Most species are distributed in limited small areas, but three are widespread, occurring in many countries: Macrocheilus asteriscus in China, Vietnam, Laos, Myanmar, Indonesia and India; Macrocheilus chaudoiri in China, Cambodia, Laos, Vietnam, the Philippines, Sumatra and India; and Macrocheilus bensoni in China, Laos, Vietnam, Myanmar, India and Sri Lanka. At present the Macrocheilus faunas of Thailand and Nepal remain unknown.
Distribution map of Macrocheilus in the Oriental Region.
We express our deep gratitude to Dr. Thierry Deuve and Ms. Azadeh Taghavian (MNHN), Ms. Christine Taylor (NHML) and Dr. Olaf Jaeger (SNSD) for the providing material examined in this study. In particular, the first author thanks Dr. Thierry Deuve for his guidance and for providing equipment and help in borrowing type specimens during the period when she studied at MNHN. His constructive suggestions and comments also have been very helpful for improving the manuscript. We also thank Dr. Thomas K. SABU (St. Joseph’s College, Devagiri, Calicut, Kerala) for correction to the text. This study was sponsored partly by the National Natural Science Foundation of China (No. 30670249) and by Guangdong Forestry Science and Technology Innovation (No. 2011KJCX027).