Miridiba excisa (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 : 24-26

Miridiba excisa (Moser, 1913)

Figs 32–33

Holotrichia excisa Moser, 1913a: 53 (type loc.: Nilgiri Hills, India).

Neodontocnema excisa – Arrow 1948: 51 (combination). — Frey 1971: 222, 224, fig. 36 (in key). — Sabatinelli 1983: 213–214, fig. 5 (species list).

Miridiba excisa – Coca-Abia 2008: 678, 684, figs 12–13 (combination; type material; in key).

Diagnosis

External morphology of adult ( Fig. 32 ). Length 19.3–20.2 mm. Dorsal surface glabrous. Clypeus shorter than frons, with anterior edge emarginate at middle. Frons with strong carina. Pronotum glabrous; anterior margin with short and sparse setae; without concavity at each lateral end; lateral margins smooth and glabrous; anterior angles obtuse, not projected forward, elevated laterally. Scutellum triangular, glabrous and densely punctate. Elytra glabrous; epipleuron with pubescence excepted on apex. Foretibia with dorsal carina moderately developed. Meso- and metatibia with strong punctures; transverse carina complete at middle, inner margin of dorsal surface with strong spines. Pygidium with conspicuous pubescence only on apex; apical margin moderately widened and raised. Ventrites 1 and 2 with dense, short pubescence, denser than those on ventrites 3 and 4. Ventrite 5 moderately depressed at posterior half. Ventrite 6 bulging at anterior half. Male genitalia: parameres ( Fig. 33 ) with dorsal branches arccurved toward apices, sharp at distal ends; ventral side with dense, long setae; apices of ventral branches expanded and nearly S-shaped in lateral view, with granules and setae at dorsal and ventral sides. Female genitalia unknown.

Material examined

Paralectotype (here indicated)

INDIA • 1 ♂; “ Nilgiri Hills ”; “ H.L. Andrewes leg.”; “ Miridiba excisa (Moser, 1913) CH. Bu Gao det 2017”; 1721 BMNH .

Remarks

Coca-Abia (2008) studied and designated a lectotype and three paralectotypes. Moreover, the first author of this paper found another former syntype (BMNH) indicated as a paralectotype herein. Antenna 9-segmented, and parameres with two dorsal and two ventral branches separated from each other (Coca- Abia 2008: figs 12–13), which characterize morphotype I “ Trichophora ”. Hence, this species is included in this genital morphotype.

Distribution

India ( Bombay, Tamil Nadu; North India), Myanmar.

Figures

Figs 32–33. Miridiba excisa (Moser, 1913), paralectotype (1721 BMNH). 32. Habitus in dorsal view. 33. Parameres in dorsal (A) and lateral (B) views. Scale bars: 32 = 5.0 mm; 33 = 1.0 mm.