Discodon nigrocephalum Pic, 1949

Biffi, Gabriel & Geiser, Michael, 2022, A revision of Discodon tricolor (Guérin-Méneville) and its mimics from the Atlantic forests of Brazil (Coleoptera: Cantharidae), European Journal of Taxonomy 834 (1), pp. 148-189 : 169-170

Discodon nigrocephalum Pic, 1949

Fig. 5E–G

Discodon nigrocephalum Pic, 1949: 6 .

Discodon nigrocephalum – Delkeskamp 1977: 255 (catalogue).

Diagnosis

Similar to D. obscurior and D. tenuecostatum sp. nov. by the general coloration. It differs from these species by the wider head ( Fig. 5F ), apparently nearly as wide as the pronotum, the antennae black, and the elytra coriaceous, rough, without costulae ( Fig. 5E ).

Type material

Lectotype (here designated) BRAZIL • ♂; São Paulo, Vale do Rio Pardo ; Dec. 1898; E. Gounelle leg.; “ Museum Paris Coll. M. Pic ”; MNHN, Paris EC13556 ( Fig. 5E–G ).

Remarks

We were not able to examine the type specimen of D. nigrocephalum nor found similar specimens that could be attributed to this species. However, the photographs of the lectotype, deposited at the MNHN, Paris, enable the distinction between D. nigrocephalum on the one hand and D. obscurior and D. tenuecostatum sp. nov. on the other hand.

Distribution

Brazil (São Paulo state) ( Fig. 16 ).

Figures

Fig. 5. Primary types, habitus and labels. A–C. Discodon albonotatum obscurior Pic, 1906 (lectotype, ♀, MNHN EC13554), dorsal habitus, ventral view and labels. D. Discodon tenuecostatum sp. nov. (holotype, ♂, MZSP 46459). E–G. Discodon nigrocephalum Pic, 1949 (lectotype, ♂, MNHN EC13556), dorsal habitus, ventral view and labels. Photographs A–C and E–G by Christophe Rivier (MNHN, Paris). Scale bars = 5.0 mm.

Fig. 16. Distribution map of the Discodon tricolor species complex.