Research Article |
Corresponding author: Sergey G. Ermilov ( ermilovacari@yandex.ru ) Academic editor: Vladimir Pesic
© 2015 Sergey G. Ermilov, Andrey T. Tolstikov.
This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Citation:
Ermilov SG, Tolstikov AV (2015) Contribution to the knowledge of Galumnoidea (Acari, Oribatida) of Cuba. ZooKeys 537: 65-78. https://doi.org/10.3897/zookeys.537.6644
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An annotated checklist of identified oribatid mites of the superfamily Galumnoidea collected from Cuba, including ten species from four genera and two families, is provided. Galumna flabellifera Hammer, 1958, Pergalumna bifissurata Hammer, 1972, P. bryani (Jacot, 1934), P. decorata Balogh & Mahunka, 1977 and Galumnopsis secunda Sellnick, 1923 are recorded for the first time in the Cuban fauna. A new species of Pergalumna, P. cubaensis sp. n., is described; it is morphologically similar to P. decorata Balogh & Mahunka, 1977, but differs from the latter by the larger body size, heavily granulated prodorsum and well-developed interlamellar setae. The adult of Allogalumna cubana Balogh & Mahunka, 1979 is redescribed.
Oribatid mites, Galumnoidea , new species, systematics, morphology, supplementary description, new record, Cuba
At present, oribatid mites of the superfamily of Galumnoidea (Acari, Oribatida) are poorly known in the Cuban fauna (
The genus Pergalumna is a large genus with more than 140 species having a cosmopolitan distribution (
Additionally, data are presented on the specific localities, with notes on new records, overall known distributions of registered taxa, and a supplementary description of Allogalumna cubana Balogh & Mahunka, 1979, which was described briefly and incompletely by
These results are based on collections from three localities in Cuba (unknown date and collector, mites were previously deposited in the Museum of Zoology of Tyumen State University, Russia):
Cuba 1: Parque Nacional Alejandro de Humboldt, 20°30'N, 74°40'W, leaf litter in forest.
Cuba 2. Cuba, Valle de Viñales National Park, 22°40'56.8"N, 83°42'57.5"W, Ancon, leaf litter in forest.
Cuba 3: Cayo Santa Maria, 22°66'21"N, 78°96'88"W, leaf litter in forest.
Specimens were mounted in lactic acid on temporary cavity slides for measurement and illustration. The body length was measured in lateral view, from the tip of the rostrum to the posterior edge of the ventral plate. Notogastral width refers to the maximum width in dorsal aspect. Lengths of body setae were measured in lateral aspect. All body measurements are presented in micrometers. Formulas for leg setation are given in parentheses according to the sequence trochanter–femur–genu–tibia–tarsus (famulus included). Formulas for leg solenidia are given in square brackets according to the sequence genu–tibia–tarsus. General terminology used in this paper follows that of Grandjean (summarized by
Body size: 962–1029 × 763–780. Prodorsum, epimeral region and antero-lateral parts of pteromorphs heavily granulated. Notogaster, anogenital region, pteromorphs and genital and anal plates striate. Rostral, lamellar, interlamellar and bothridial setae setiform, slightly barbed. Anterior notogastral margin well-developed. Three pairs of porose areas (Aa, A2, A3) rounded. Median pore and postanal porose area absent.
Measurements. Body length: 1012 (holotype: female), 962, 1029 (two paratypes: female and male); notogaster width: 763 (holotype), 763, 780 (two paratypes).
Integument. Body color black-brownish. Prodorsum, epimeral region and antero-lateral parts of pteromorphs heavily granulated; granules rounded or slightly elongated, their diameter or length up to 6. Notogaster, anogenital region, pteromorphs and genital and anal plates striate.
Prodorsum. Rostrum broadly rounded. Lamellar (L) and sublamellar (S) lines distinct, parallel, curving backwards. Rostral (ro, 77–86) and lamellar (le, 53–65) setae thin, slightly barbed, directed antero-medially. Interlamellar setae (in, 86–90) setae setiform, indistinctly barbed, directed medially. Bothridial setae (bs, 110–123) setiform, slightly barbed, directed postero-laterad. Exobothridial setae and their alveoli absent. Porose areas Ad absent.
Notogaster. Anterior notogastral margin well developed. Dorsophragmata (D) of medium size, elongated longitudinally. Notogastral setae represented by ten pairs of alveoli. Three pairs of porose areas (Aa, A2, A3) rounded, similar in diameter (20–24), with clear borders. Areas Aa located between setal alveoli la and lm, equal distanced from them. Median pore absent in male and females. All lyrifissures (ia, im, ip, ih, ips) distinct, im and opisthonotal gland openings (gla) located antero-laterally to A2.
Gnathosoma. Morphology of subcapitulum, palps and chelicerae typical for Pergalumna (
Epimeral and lateral podosomal regions. Anterior tectum of epimere I smooth. Setal formula: 1–0–2–3. Setae thin, slightly barbed, 1b, 3b, 3c and 4c (41–49) longer than 4a and 4b (24–28) Pedotecta II trapezoid in ventral view. Discidia sharply triangular. Circumpedal carinae (cp) reaching insertions of 3b.
Anogenital region. Six pairs of genital (g1, g2, 36–45; g3–g6, 20–28), one pair of aggenital (ag, 20–28), two pairs of anal (an1, an2, 20–28) and three pairs of adanal (ad1–ad3, 20–28) setae thin, indistinctly barbed. Genital plates with two genital setae on anterior edge. Adanal lyrifissures (iad) located diagonally to anal plates. Distance ad1–ad2 shorter than ad2–ad3. Setae ad3 inserted laterally to iad. Postanal porose area absent.
Legs. Morphology of leg segments, setae and solenidia typical for Pergalumna (see
Pergalumna cubaensis sp. n., adult: 5 rostrum, frontal view (granules are shown partially) 6 interlamellar seta and part of sejugal region 7 bothridial seta 8 subcapitulum (in dissected specimen), ventral view 9 right genital plate and part of epimeral and aggenital regions (granules are shown partially) 10 right anal plate and part of adanal region 11 tibia of leg IV, left, antiaxial view. Scale bars 100 µm (5, 6, 8–11), 50 µm (7).
Leg setation and solenidia of adult Pergalumna cubaensis sp. n. (same data for Allogalumna cubana Balogh & Mahunka, 1979).
Leg | Tr | Fe | Ge | Ti | Ta |
---|---|---|---|---|---|
I | v’ | d, (l), bv’’ | (l), v’, σ | (l), (v), φ1, φ2 | (ft), (tc), (it), (p), (u), (a), s, (pv), v’, (pl), l’’, ε, ω1, ω2 |
II | v’ | d, (l), bv’’ | (l), v’, σ | (l), (v), φ | (ft), (tc), (it), (p), (u), (a), s, (pv), ω1, ω2 |
III | v’ | d, ev’ | l’, σ | l’, (v), φ | (ft), (tc), (it), (p), (u), (a), s, (pv) |
IV | v’ | d, ev’ | d, l’ | l’, (v), φ | ft’’, (tc), (p), (u), (a), s, (pv) |
Locality Cuba 1: holotype (female) and two paratypes (female and male).
The holotype is deposited in the collection of the Senckenberg Museum, Görlitz, Germany; two paratypes are in the collection of the Tyumen State University Museum of Zoology, Tyumen, Russia.
The specific name cubaensis refers to the country of origin, Cuba.
Pergalumna cubaensis sp. n. is morphologically most similar to P. decorata Balogh & Mahunka, 1977 from the Neotropical region (see
Measurements. Body length: 332–348 (12 specimens: six females and six males); notogaster width: 232–249 (12 specimens). Without sexual dimorphism.
Integument. Body color brown to light brown. Body surface punctate (visible under high magnification, ×1000).
Prodorsum. Rostrum broadly rounded. Sublamellar lines distinct, curving backwards. Rostral (12–16) and lamellar (6–8) setae thin, smooth, directed antero-medially. Interlamellar setae minute (2). Bothridial setae (65–73) with elongated, unilaterally dilated and sparsely ciliated head, directed postero-laterad. Exobothridial setae and their alveoli absent. Porose areas Ad oval, transversally oriented (8 × 4), usually visible only in dissected specimens.
Notogaster. Anterior notogastral margin not developed. Dorsophragmata of medium size, elongated longitudinally. Notogastral setae represented by 10 pairs of alveoli. Four pairs of porose areas without clear borders: Aa oval, slightly transversally oriented (32–41 × 20), but it seems round in dorsal view; A1 rounded (12–16); A2 (16–20 × 10–12) and A3 (16–24 × 12–16) oval. Areas Aa located antero-medially to la. Often small additional porose parts (Aad; one to three represented by five to nine heavily pores) present nearly of Aa, but they visible only high magnification (Fig.
Gnathosoma. Morphology of subcapitulum, palps and chelicerae similar to Pergalumna cubaensis sp. n. Subcapitulum size: 86–90 × 82–86. Subcapitular setae setiform, slightly barbed, a (14–16) longer than m (10–12) and h (8); a thickest, h thinnest. Two pairs of adoral setae (8) setiform, barbed. Palp length: 69. Axillary sacculi distinct. Chelicera length: 127. Cheliceral setae setiform, barbed, cha (32) longer than chb (20).
Epimeral and lateral podosomal regions. Anterior tectum of epimere I smooth. Setal formula: 1–0–1–2. Setae thin, smooth, 1a, 3b and 4a (10) longer than 4b (6) Pedotecta II rectangular, rounded distally in ventral view. Discidia sharply triangular. Circumpedal carinae clearly not reaching insertions of 3b.
Anogenital region. Six pairs of genital (g1, g2, 10; g3–g6, 6), one pair of aggenital (4), two pairs of anal (4) and three pairs of adanal (4) setae thin, smooth. Genital plates with two genital setae on anterior edge. Adanal lyrifissures located parallel to anal plates. Distance ad1–ad2 shorter than ad2–ad3. Setae ad3 inserted laterally to iad. Postanal porose area oval, transversally oriented (12–16 × 6–10).
Legs. Morphology of leg segments, setae and solenidia, formulas of leg setation and solenidia similar to Pergalumna cubaensis sp. n. (Table
Allogalumna cubana Balogh & Mahunka, 1979, adult: 16 rostrum, frontal view 17 interlamellar seta and part of sejugal region 18 bothridial seta 19 left setal alveolus c and porose area Aa with additional areas 20 subcapitulum (in dissected specimen), ventral view (microfoveolae are shown partially) 21 right genital plate and part of epimeral and aggenital regions (microfoveolae are shown partially) 22 left anal plate and part of adanal region (microfoveolae are shown partially) 23 tibia of leg IV, left, antiaxial view. Scale bars 20 µm.
Locality Cuba 2: 12 specimens (six females and six males).
The Cuban specimens of A. cubana from Balogh and Mahunka’s description (
Galumna angularis Jeleva, Scull & Cruz, 1984 (see
Material examined. Locality Cuba 1: 11 specimens.
Galumna flabellifera Hammer, 1958 (see
Material examined. Locality Cuba 2: 16 specimens.
Galumna sp. Species is morphologically similar to Galumna lunaris Jeleva, Scull & Cruz, 1984 (see
Material examined. Locality Cuba 3: 4 specimens.
Remarks.
Pergalumna bifissurata Hammer, 1972 (see
Material examined. Locality Cuba 1: 22 specimens.
Pergalumna bryani (Jacot, 1934) (see
Material examined. Locality Cuba 2: 5 specimens.
Pergalumna decorata Balogh & Mahunka, 1977 (see
Material examined. Locality Cuba 1: 7 specimens.
Pergalumna sp. Species is morphologically similar to Galumna brasiliensis Sellnick, 1923 (see
Material examined. Locality Cuba 1: 22 specimens; Locality Cuba 2: 18 specimens; Locality Cuba 3: 6 specimens.
Remarks.
Galumnellidae
Galumnopsis secunda Sellnick, 1923 (see
Material examined. Locality Cuba 2: 5 specimens.
We cordially thank Prof. Dr. Badamdorj Bayartogtokh (National University of Mongolia, Ulaanbaatar, Mongolia) and one anonymous reviewer for the valuable comments and Dr. Dania Prieto (University of Havana, Cuba) for collaboration. The taxonomic study on Galumnoidea was supported by the Russian Foundation for Basic Research (project: 15-04-02706 A).