Miridiba pseudosinensis Keith, 2010

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 : 67-68

Miridiba pseudosinensis Keith, 2010

Figs 84–86

Miridiba pseudosinensis Keith, 2010: 232 , figs 1–3 (type loc.: Champassak, Laos).

Diagnosis

External morphology of adult ( Fig. 84 ). Body size 19.0 mm. Dorsal surface glabrous. Clypeus with conspicuous punctures, flat, shorter than frons, oblique laterally, anterior edge strongly emarginate at middle. Frons with punctures similar to those of clypeus; frontal carina developed. Anterior pronotal margin glabrous, regularly flanged; posterior margin not flanged, glabrous; lateral margins with anterior third elevated; anterior angles almost right and elevated, posterior angles obtuse and rounded. Prosternal process with two-pointed ends. Scutellum densely punctate and glabrous. Elytral surface with punctures regularly distributed, glabrous; epipleuron with setae at basal half. Foretibia with strong dorsal carina. Meso- and metatibia with transverse carina complete and inner margin of dorsal surface with spines. Pygidium irregularly punctate; punctures dense and deep; surface glabrous, at most with a tiny seta on each puncture hardly visible, apex with conspicuous pubescence. Ventrites 1 and 2 with decumbent conspicuous pubescence regularly distributed. Ventrites 3 and 4 with scattered thin punctures, glabrous. Ventrite 5 with strong punctures and long pubescence irregularly distributed on posterior half. Ventrite 6 with anterior margin moderately sharped; punctures and pubescence (long and short) irregularly distributed. Male genitalia: paramere ( Fig. 85 ) with two dorsal branches bilaterally symmetrical. Phallobase shorter than paramere. Endophallus ( Fig. 86 ) without raspulae, with acicular soft setae. Apophysis of temones separated from each other at distal end ( Fig. 86 ). Female unknown.

Material examined

Holotype LAOS • ♂; Champassak Prov., Dong Hua Xiao NBCA, 2 km S of Ban Nong Luang bank of Touay-Guai stream; 15º4′ N, 106º13′ E; 800 m a.s.l.; 1–5 Apr. 1998; O. Merkl and G. Csorba leg.; light trap No. 24; “ Miridiba Pseudosinensis sp. nov. Det D. Keith and G. Sabatinelli det. 2009”; DKC.

Paratype LAOS • 1 ♂; same collection data as for holotype; DKC .

Remarks

Keith (2010) described Miridiba pseudosinensis with two specimens designated as holotype and paratype. This species shows features of external morphology, which characterize Miridiba . Besides, male genitalia shows features that characterize the morphotype V “ Sinensis ”. Hence, this species is included in this genital morphotype.

Distribution

Laos (Champassak).

Figures

Figs 83–86. 83. Miridiba sinensis (Hope, 1842), lectotype, ♂ (BMNH). Habitus in dorsal view. 84– 86. M. pseudosinensis Keith, 2010, holotype, ♂ (DKC). 84. Habitus in dorsal view. 85. Parameres in dorsal (A) and lateral (B) views. 86. Endophallus (everted) and temones in dorsal view. Scale bars: 83–84 = 5.0 mm; 85–86 = 1.0 mm.