Cerhomalus mechowi Quedenfeldt, 1884

Frolov, Andrey V. & Akhmetova, Lilia A., 2021, Taxonomic revision of the Afrotropical scarab beetle genus Cerhomalus Quedenfeldt, 1884 (Coleoptera: Scarabaeidae: Orphninae), European Journal of Taxonomy 739 (1), pp. 36-50 : 38-40

Cerhomalus mechowi Quedenfeldt, 1884

Figs 1 , 5B , 6

Cerhomalus mechowi Quedenfeldt, 1884: 290 .

Cerhomalus mechowi – Arrow 1912: 30. — Schmidt 1913: 71.

Orphnus mechowi (Quedenfeldt) – Petrovitz 1971: 2.

Differential diagnosis

Cerhomalus mechowi is most similar to C. petrovitzi sp. nov. but differs from it in having the widened part of a paramere (in lateral view) about half the length of the paramere ( Fig. 1C , vs about ¾ the length of the paramere in C. petrovitzi sp. nov. ( Fig. 3D )) and the ventral fossa of a paramere shorter and wider ( Fig. 1F , vs longer and narrower in C. petrovitzi sp. nov. ( Fig. 3G )).

Type material

Lectotype (here designated) ANGOLA • ♂; “Quango Strom [ Quango River ] Major v. Mechow / Ex-Musaeo Quedenfeldt / Cerhomalus mochowi [sic♂] Qd / TYPE / Museum Paris ex Coll. R. Oberthur ”; MNHN.

Paralectotype ANGOLA • 1 ♀; same collection data as for lectotype; MNHN • 1 ♂; “ Malange v. Mechow ”; ZMHUB.

Remarks

The male paralectotype housed in ZMHUB lacks the aedeagus.

Distribution

The species is known from two localities in northwestern Angola ( Fig. 6 ).

Figures

Fig. 1. Cerhomalus mechowi Quedenfeldt, 1884. A–F. Lectotype, ♂ (MNHN). G. Paralectotype, ♀ (MNHN). H–I. Paralectotype, ♂ (ZMHUB). A, G, I. Habitus in dorsal view. B, H. Labels. C. Aedeagus in lateral view. D. Parameres in dorsal view. E. Parameres in apical view. F. Parameres in ventral view. Abbreviation: va. phlb. sc. = ventroapical phallobase sclerite. Scale bars = 1.0 mm.

Fig. 5. Cerhomalus spp., scheme of aedeagus in lateral view and parameres in ventral view. A. C. absconditus (Petrovitz, 1971). B. C. mechowi Quedenfeldt, 1884. C. C. petrovitzi sp. nov. D. C. quedenfeldti sp. nov. Abbreviation: va. phlb. sc. = ventroapical phallobase sclerite. Not to scale.

Fig. 6. Cerhomalus spp., distributional record map.

Fig. 3. Cerhomalus petrovitzi sp. nov. A–B, D–G. Holotype, ♂ (MNHN). C. Paratype, ♀ (RMCA). A, C. Habitus in dorsal view. B. Labels. D. Aedeagus in lateral view. E. Parameres in dorsal view. F. Parameres in apical view. G. Parameres in ventral view. Scale bars = 1.0 mm.