Miridiba hybrida ( Moser, 1912 )

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 : 31-32

Miridiba hybrida ( Moser, 1912)

Figs 41–43

Holotrichia hybrida Moser, 1912: 444 (type loc.: Assam, India).

Holotrichia hybrida – Chang 1964: 145, 149–150, figs 58–59 (species list; in key). — Smetana & Král 2006: 219 (catalogue).

Neodontocnema hybrida – Arrow 1948: 51 (combination). — Frey 1971: 222–223, fig. 34 (in key). — Sabatinelli 1983: 213–214, fig. 4 (species list).

Miridiba hybrida – Nomura 1977: 88. — Coca-Abia 2008: 680, 684 (combination; type material; in key). — Bezděk 2016: 271 (catalogue).

Diagnosis

External morphology of adult ( Coca-Abia 2008). Dorsal surface glabrous ( Fig. 41 ). Clypeus with anterior edge deeply emarginate at middle. Frontal carina very sharp and developed. Pronotum with anterior margin moderately concave at each lateral end, with short and sparse pubescence; posterior margin finely flanged except at middle; lateral margins smooth, glabrous and moderately sinuate at anterior half; anterior angles sharp, elevated laterally; posterior angle obtuse and rounded. Epipleuron with pubescence except on apex. Foretibia with conspicuous carina; insertion of inner spur equidistant between second and third outer tooth. Meso- and metatibia with transverse carina complete; inner margin of dorsal surface with spines. Pygidium with short and decumbent pubescence, punctures irregularly distributed; apical margin moderately raised. Ventrite 5 moderately depressed at posterior half. Ventrite 6 bulging. Male genitalia as that of morphotype I. Parameres ( Fig. 42 ) robust, with dorsal branches abruptly curved downward and with dorsal and ventral pubescence; ventral branches moderately curved upwardly; apices of dorsal and ventral branches crossing each other at caudal end. Endophallus ( Fig. 43 ) with spines towards distal end and soft sensillae towards proximal end. Temones ( Fig. 43 ) with apophysis reduced and separated at distal end. Female unknown.

Material examined

INDIA • 1 ♂; Assam, Shiling ; 5000 ft; 1 May 1924; Fletcher leg.; BMNH .

Remarks

This species was transferred by Nomura (1977) without studying any type specimens. Coca-Abia (2008) studied and designated a lectotype and a paralectotype of M. hybrida , confirming its transfer to Miridiba . This species shows features of external morphology and male genitalia, which characterize morphotype I “ Trichophora ”. Hence, this species is included in this genital morphotype.

Distribution

India (Assam).

Figures

Figs 41–43. Miridiba hybrida (Moser, 1912) (non-type, BMNH). 41. Habitus in dorsal view. 42. Parameres in dorsal (A) and lateral (B) views. 43. Endophallus (everted) and temones in dorsal view. Scale bars: 41 = 5.0 mm; 42–43 = 1.0 mm.