Monolepta marginethoracica Laboissière, 1940

Wagner, Thomas, 2020, Revision of Monolepta Chevrolat, 1836 species from North-East Africa (Coleoptera: Chrysomelidae: Galerucinae), Bonn zoological Bulletin 69 (2), pp. 225-247 : 231-232

Monolepta marginethoracica Laboissière, 1940

( Figs 2 , 8 )

Monolepta marginethoracica Laboissière, 1940a: 131 .

Remarks. A detailed redescription was published in Wagner (2007b). Next to lecto-, and paralectotype “Adi Ugri Eritrea VIII / Musée du Congo Erythrée: Adi Ugri Coll. Clavareau / V. Laboissière det. 1940: Monolepta marginethoracica m. Type / R. Det. C 4344” (MRAC), 28 specimens have been revised in Wagner (2007b) and no further specimens have been found afterwards.

Diagnosis. In coloration, external morphometrics and antennal characters most similar to M. clienta , but M. marginethoracica is on average larger, and has usually completely black margined elytra, whereas the elytral apex of M. clienta is red. Both species are allopatrically distributed and can be clearly distinguished by the male genital morphology ( Fig. 7D ). In size and male genital structures somewhat similar to M. vinosa , but can be easily distinguished by the entirely black margined elytra ( Fig. 7A ).

Distribution and ecology. Only known from few mon- tane sites in Eritrea and Ethiopia. Occurs at the type locality together with M. longiuscula Chapuis, 1879 , M. postrema Chapuis, 1879 , and M. nigrocruciata Laboissière, 1940 ( Fig. 2 ).

232 Thomas Wagner

Figures

Fig. 2. Distribution of M. longiuscula, M. euchroma, M. jeanneli, M. cruciata.

Fig. 8. Monolepta marginethoracica Laboissière, 1940a.A. Colour pattern. B. Basal antennomere, male.C. Dto., female.D. Medi- an lobe, a. lateral, b. dorsal, c. ventral, without endophallic structures. E. Spermathecae. F. Bursa-sclerite, dorsal. G. Dto., ventral.

Fig. 7. Distribution of M. marginethoracica, M. nigropicta, M. vincta, M. lepida.