Onitis naviauxi Cambefort, 1988

Karimbumkara, Seena Narayanan & Priyadarsanan, Dharma Rajan, 2024, Study on the genus Onitis (Coleoptera: Scarabaeidae: Scarabaeinae) of the Indian Subcontinent, with three new species from India, European Journal of Taxonomy 956, pp. 1-61 : 30-31

Onitis naviauxi Cambefort, 1988

Figs 4E–F , 10D , 19

Onitisnaviauxi Cambefort, 1988: 189 (original description).

Onitis naviauxi – Bezděk & Krell 2006: 159 (distribution). — Bezděk 2016: 179 (distribution). — Schoolmeesters 2022 (online catalogue).

Differential diagnosis

Cambefort (1988) classified Onitisnaviauxi in Group III of Janssens (1937). It is similar to O. assamensis in having vertex with punctures and clypeal carina being placed away from vertex. It is distinct from the latter in having shorter clypeal carina and the male protibia having 3–4 teeth on the inferomedial ridge, while in O. assamensis there are 6–7 teeth.

Type material examined (based on images)

Holotype

NEPAL • ♂; “ Onitisnaviauxi n. sp. Y. Cambefort det. 1987, Nepal: Sauraha. Alt. 150, 19.4.82 RN”; MNHN EC4807 .

Paratype

NEPAL • ♀; “ Onitisnaviauxi n. sp. Y. Cambefort det. 1987, Nepal: Sauraha. Alt. 150, 19.4.82 RN”; MNHN EC4808 .

Description

MEASUREMENTS (in mm). TL=20–25. BW= 10–12.

Male

Bronzy green, shining; head rounded, slightly flattened anteriorly; clypeus with fine, sparse punctuation, slightly rugose behind; clypeal carina present, short; frontal carina narrowly interrupted in the middle, with a fairly strong sharp tubercle behind; vertex with smooth punctures; pronotum with simple, strong and dense punctures on the disc, finer, more sparse anteriorly, almost imperceptible at the sides; base not bordered, basal foveae round and placed apart; scutellum very small; elytra smooth, striae broad, not very deep, intervals minutely and sparsely punctured; pygidium convex, very minutely punctured; metasternal shield with shallow longitudinal groove, sparse fine long hairs, the sides granulate anteriorly. Clypeus reflexed, straight in the middle. Profemur with a strong tooth on the antero-median ridge, protibia short, tridentate on the infero-internal ridge, median femur unarmed, tibia toothed on the dorsal side, posterior femur with a strong tooth on the ridge below, directed towards the back, tibia bilobed at the apex.

AEDEAGUS ( Fig. 4E–F ). Parameres shorter than the phallobase, phallobase cylindrical, slightly curved; parameres straight above and curved below, largely notched on the underside.

Female

Similar to male but more elongated head, clypeus parabolic, not much reflexed, rugose; with confluent transverse rugulosity behind the clypeal carina; vertex as in the male, with simple, very sparse punctuation; metasternum with well-marked narrow groove; legs not toothed.

Distribution

Nepal ( Cambefort 1988; Bezděk & Krell 2006; Bezděk 2016; Schoolmeesters 2022).

Figures

Fig. 4. A–D. Onitis assamensis Biswas, 1980, Aedeagus, lateral, dorsal, ventral and apical views, AIMB/ Co/Sc1000001 (images: AIMB). E–F. O. naviauxi Cambefort, 1988, lateral and dorsal views, MNHN EC4807, (images: Antoine Mantilleri, MNHN). G–J. O. bordati Cambefort, 1988, aedeagus; lateral, dorsal, ventral and apical views, AIMB/Co/Sc1000016, (images AIMB). K–N. O. siva Gillet, 1911, aedagus, lateral, dorsal, ventral and apical views, AIMB/Co/Sc1000704, (images: AIMB).

Fig. 10. A. Onitisfeae Felsche, 1907, cotype, (image: Olaf Jäger, SNSD). B. O. humerosus (Pallas, 1771), BMNH (E) 1237143, (image: BMNH). C. O. lama Lansberge, 1875, syntype, ♂, MNHN EC4810, (image: Antoine Mantilleri, MNHN). D. O. naviauxi Cambefort, 1988, holotype, ♂, MNHN EC4807, (image: Antoine Mantilleri, MNHN). E. O. philemon Fabricius, 1801, lectotype, ZMUK Fabricius 003706, (image: Alexey Solodovnikov, ZMUC). F. O. punctatostriatus Janssens, 1937, holotype, ♂, (image: Jonathan Brecko, IRSNB).

Fig. 19. Map showing the distribution of Onitislama Lansberge, 1875; O. naviauxi Cambefort, 1988; O. philemon Fabricius, 1801; O. punctatostriatus Janssens, 1937 and O. singhalensis Lansberge, 1875 in the Indian Subcontinent.