Miridiba rugaticollis (Moser, 1913) Gao & Coca-Abia, 2021

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 : 71-73

Miridiba rugaticollis (Moser, 1913) comb. nov.

Figs 18–19 , 90

Holotrichia rugaticollis Moser, 1913a: 53 (type loc.: Kanara, India).

Holotrichia rugaticollis – Frey 1971: 220–221, fig. 29a (in key).

Diagnosis

External morphology of adult ( Fig. 90 ). Body size 14.7 mm. Dorsal surface shiny, glabrous. Male antennal club longer than funiculus and scape. Clypeus longer than frons, almost flat, arcuate laterally, anterior edge emarginate at middle; surface with conspicuous and deep punctures. Frons with punctures similar to those of clypeus, wrinkled appearance; frontal carina blunt. Pronotal surface with strong and deep punctures, wrinkled appearance; anterior margin glabrous, widely flanged; posterior margin glabrous; lateral margins widely serrated with short setae, moderately elevated at anterior half; anterior angles almost right, posterior angles obtuse and marked. Prosternal process slender, apex spade-shaped. Scutellum glabrous, with punctures uniformly distributed. Elytral surface with punctures evenly distributed and softer than those of pronotum; glabrous, at most with short setae in each puncture hardly visible; epipleuron glabrous, with a few short setae at basal part. Foretibia with a dorsal carina moderately developed. Meso- and metatibia with transverse carina complete, inner margin of dorsal surface with a few spines. Prepygidium with punctures regularly distributed. Pygidium with punctures irregularly distributed, glabrous; apex with sparse and short pubescence. Ventrites 1 and 2 with conspicuous short pubescence reclined and regularly distributed. Ventrites 3 and 4 glabrous. Ventrite 5 moderately depressed at posterior half, with sparse long pubescence irregularly distributed. Ventrite 6 moderately bulging at anterior margin, with strong and deep punctures, wrinkled appearance; long pubescence on posterior margin. Male genitalia fits into morphotype VII “ Rugaticollis ”. Parameres ( Fig. 18 ) with notch of dorsal branch well developed and circular-shaped. Endophallus ( Fig. 19 ) with an area of soft sensillae at distal half. Apophysis of temones ( Fig. 19 ) separated from each other at both ends. Female genitalia unknown.

Material examined

Lectotype (here designated)

INDIA • ♂; “Kanara”; “ Rugaticollis Brensk”; “ Holotrichia rugaticollis Type Mos”; “Syntypus Holotrichia rugaticollis Moser, 1913 labelled by MNHUB 2016 ”; “Lectotype Miridiba rugaticollis (Moser, 1913) Chuan-bu Gao & Coca-Abia det. 2017”; MFNB.

Paralectotype (here indicated)

INDIA • 1 ♂; “Kanara”; “ Rugaticollis ” [in red]; “Syntypus Holotrichia rugaticollis Moser, 1913 labelled by MNHUB 2016”; “Paralectotype Miridiba rugaticollis (Moser, 1913) Chuan-bu Gao & Coca-Abia det. 2017”; MFNB .

Remarks

Moser (1913a) described Holotrichia rugaticollis from a series of specimens from Bombay (Kanara). We have studied two male type specimens (MFNB) (one of them heavily damaged), which show the external features that characterize the genus Miridiba and the morphotype VII “ Rugaticollis ”. Hence, we transfer H. rugaticollis to Miridiba and to this genital morphotype. Moreover, we designate lectotype and paralectotype.

Distribution

India (Kanara).

Figures

Figs 18–19. Morphotype VII “Rugaticollis”. Male genitalia of M. rugaticollis (Moser, 1913), lectotype (MFNB). 18. Parameres in dorsal (A), ventral (B) and lateral (C) views. 19. Endophallus and temones in lateral view. Scale bars = 1.0 mm.

Figs 90–93. 90. Miridiba rugaticollis (Moser, 1913), lectotype, ♂ (MFNB). Habitus in dorsal view. 91–93. M. nigrescens (Moser, 1916), lectotype, ♂ (MFNB). 91. Habitus in dorsal view. 92. Parameres in dorsal (A) and lateral (B) views. 93. Endophallus and temones in lateral view. Scale bars: 90–91 = 5.0 mm; 92–93 = 1.0 mm.