Miridiba bilobata (Moser, 1913)

Gao, Chuan-bu & Coca-Abia, María Milagro, 2021, Revision of the genus Miridiba Reitter, 1902 (Coleoptera, Scarabaeidae, Melolonthinae): genital morphotypes and new taxonomic data, European Journal of Taxonomy 749, pp. 1-94 : 20

Miridiba bilobata (Moser, 1913)

Fig. 27

Holotrichia bilobata Moser, 1913a: 54 (type loc.: Kanara, India).

Neodontocnema bilobata – Arrow 1948: 51 (combination).

Miridiba bilobata – Coca-Abia 2008: 676, 684 (combination; type material; in key).

Diagnosis

External morphology of adult ( Fig. 27 ). Dorsal surface glabrous. Clypeus concave, with anterior edge deeply emarginate at middle, oblique laterally. Frons strongly inclined in lateral view; frontal carina sharp and raised. Pronotal anterior margin glabrous, with a concavity at each lateral end; posterior margin glabrous, flanged except at middle; lateral margins smooth, glabrous; anterior angles sharp, projected forward and elevated laterally. Scutellum glabrous and punctate. Epipleuron with pubescence in basal half. Foretibia with strong dorsal carina. Meso- and metatibia with transverse carina interrupted at middle; inner margin of dorsal surface with strong spines. Pygidium irregularly punctate with pubescence longer toward apex; apical margin widened and gently raised. Ventrite 5 moderately depressed at posterior half. Ventrite 6 moderately bulging at anterior margin. Male genitalia: parameres with dorsal and ventral branches separated from each other and with pubescence on ventral surface of dorsal branches. Female unknown.

Material examined

Lectotype (here designated) INDIA • ♂; S. India, Kanara; “?Kanara”; “ ♂ ”; “ Holotrichia bilobata Type Mos.”; “Type”; “Andrewes Bequest B.M. 1922-221”; “ Miridiba bilobata (Moser, 1913) CH. Bu Gao det. 2017”; BMNH.

Remarks

This species was transferred to Miridiba , and a type specimen (MFNB) was indicated as holotype ( Coca-Abia 2008). Moser (1913a) did not indicate how many specimens he studied, so the indication as holotype by Coca-Abia (2008) was not valid (Art. 73.1 ICZN) (the specimen labelled as holotype was lost on the way back to MFNB). One syntype has been found in Natural History Museum of London (BMNH), which is designated as lectotype herein. The external morphology and male genitalia indicate that this species belongs to morphotype I “ Trichophora ”.

Distribution

India (Karnataka, West Bengal).

Figures

Figs 26–28. Habitus in dorsal view. 26. Miridiba abdominalis (Hope, 1831), lectotype (BMNH). 27. M. bilobata (Moser, 1913), lectotype (BMNH). 28. M. castanea (Waterhouse, 1875), lectotype (BMNH). Scale bars = 5.0 mm.