Gymnocheilis Dejean, 1835

Kolibac, Jiri, 2013, Trogossitidae: A review of the beetle family, with a catalogue and keys, ZooKeys 366, pp. 1-194 : 24-25

Genus Gymnocheilis Dejean, 1835 Figs 4 , 13 , 14 ; Map 4

Gymnocheilis Dejean, P. F. M. A. 1835: 314

Type species.

[Type species: Peltis squamosa Gray in Griffith and Pidgeon 1832; by monotypy]

Léveillé, A. 1910: 22 ( Gymnochila ). Kolibáč, J. 2005: 60 ( Gymnochila , redescription). Kolibáč, J. 2006: 111 ( Gymnochila , phylogeny). Reitter, E. 1876: 37 ( Gymnochila ). Leschen, R. A. B. & Lackner, T. 2013: 279, 289

Lepidopteryx Hope, 1840 [Type species: Peltis squamosa Gray in Griffith and Pidgeon 1832; not Lepidopteryx squamosa Hope, 1840] See below for explanation of this synonymy

Gymnochila Erichson, 1844 [Type species: Trogosita vestita Griffith, 1832 (= Gymnochila varia Fabricius, 1801); by monotypy]

Remarks.

Yves Bousquet (pers. comm., 2010) kindly checked the nomenclatoral problem of Leperina that also bears upon the name of Gymnocheilis : " ... the type species of Lepidopteryx is Trogositas quamosa Gray, 1832 described from ‘Melville’s Island’, not Lepidopteryx squamosa Hope, 1840. In his second and third catalogues, Dejean proposed the genus Gymnocheilis for squamosa Gray. So Lepidopteryx Hope, 1840 is a senior synonym of Gymnochila Erichson, 1844, which in turn is a junior synonym of Gymnocheilis Dejean, 1835. " The correct name Gymnocheilis has already been used by Leschen and Lackner (2013).

Description.

Body size: about 9.0-14.0 mm. Body shape elongate. Gular sutures reduced. Frontoclypeal suture absent. Frons: longitudinal groove or depression absent. Cranium ventrally: tufts of long setae at sides absent. Submentum of males: ctenidium present. Submentum: ctenidium present. Antennal groove present. Eyes: size large, dorsal. Eyes number: four. Epicranial acumination deep. Lacinial hooks absent. Galea: shape clavate. Galea: ciliate setae absent. Mediostipes-Lacinia fused together. Palpifer: outer edge denticulate. Mandibular apical teeth number: one. Mola present. Penicillus (at base) present (fine, often membranous). Pubescence above mola or cutting edge absent. Ventral furrow absent. Basal notch deep. Labrum-Cranium not fused. Epipharyngial sclerite present. Lateral tormal process: projection projection not developed (all remaining). Ligula: ciliate setae absent. Ligula rigid, not retroflexed, weakly emarginate. Hypopharyngeal sclerite absent. Antenna 11-segmented. Antennal club asymmetrical, sensorial fields present. Front coxal cavities externally closed, internally open. Pronotum transverse. Prepectus absent. Middle coxal cavities closed. Elytra: long hairs absent. Epipleuron thin. Elytral interlocking mechanism present, carinae reduced. Elytral punctation regular, scales present. Wing: radial cell oblong (or reduced), wedge cell present, cross vein MP3-4 present, cross vein AA1+2-3+4 present. Front tibiae: spines along side moderate. Hooked spur present. Claws: denticle absent. Parasternites number along ventrites III-VII: one. Spiculum gastrale absent. Tegmen composed of three parts.

Biology.

Probably predatory. Sometimes collected at light.

Distribution.

Africa south of the equator.

Species:

Gymnocheilis lepidoptera Reitter, 1876; Abyssinia (AL)

Léveillé, A. 1910: 22. Reitter, E. 1876: 39

† Gymnocheilis obesa Heer, 1862; Germany: Öhningen; Tertiary: Middle Eocene (varA)

Ponomarenko, A. G. & Kireichuk, A. G. 2005-2008: http://www.zin.ru/animalia/Coleoptera/rus/paleosy2.htm. Schmied, H. et al. 2009: 23

Gymnocheilis rugosa Thunberg, 1808; Guinea (AL)

Gymnocheilis sparsuta J. Thomson, 1858; Gabon (AL)

Léveillé, A. 1910: 22. (syn. Gymnochila angulicollis J. Thomson, 1858). Kolibáč, J. 2005: 60 (redescription). Reitter, E. 1876: 38

Gymnocheilis subfasciata J. Thomson, 1858; Gabon (AL)

Léveillé, A. 1910: 22. Reitter, E. 1876: 39

Gymnocheilis varia Fabricius, 1801; South Africa (AL)

Léveillé, A. 1910: 22 (syn. Gymnochila adspersa Boheman, 1848) (Caffraria)

Léveillé, A. 1910: 22 (syn. Gymnochila laticollis Boheman, 1848) (Caffraria)

Léveillé, A. 1910: 22 (syn. Gymnochila squamosa Gray in Griffith 1832) (Cap)

Léveillé, A. 1910: 22. (syn. Gymnochila vestita Fabricius, 1844) (Cap, South Africa)

Kolibáč, J. 2005: 60 (redescription). Reitter, E. 1876: 38

Figures

Figure 4. A Anacypta sp., Vietnam B Anacypta punctata C Anacypta sp., Laos D Gymnocheilis subfasciata E Gymnocheilis sp., Ghana F Gymnocheilis varia G Kolibacia regularis H Kolibacia squamulata I Leperina cirrosa.

Map 4. A distribution of the tribe Gymnochilini.

Figure 13. A-B Calitys scabra (A head and pronotum B elytral apex with interlocking mechanism) C-D Acalanthis quadrisignata (C apex of protibia with hooked spur and lateral spines D sculpture of frons with punctures conjoined into wrinkles) E-H Gymnocheilis sp., Cameroon (E head F protibia G elytral apex H detail of scales).

Figure 14. A-F Anacypta sp., Assam (A ctenidium B labium with ciliate setae C antennal club with sensorial fields D detail of sensillae E head laterally with divided eye F detail of sensorial setae and ventral eye) G-H Gymnocheilis sp., Cameroon (G antennal club H detail of sensillae).