Miridiba trichophora ( Fairmaire, 1891 )

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 : 16-18

Miridiba trichophora ( Fairmaire, 1891)

Figs 2–3 , 24–25

Rhizotrogus trichophorus Fairmaire, 1891: 199 (type loc.: Shanghai, China).

Holotrochus vestitus Brenske, 1894a: 75 .

Shangaia vestita Lucas, 1920: 592 .

Holotrochus vestitus – Dalla Torre 1912: 219 (catalogue). — Coca-Abia 2008: 674, 683, figs 1–5, 8–9 (type material).

Holotrichia trichophora – Chang 1964: 146, 149–150, figs 44–45 (species list; in key).

Miridiba trichophora – Reitter 1902: 170 (combination of Rhizotrogus trichophorus ). — Dalla Torre 1912: 248 (catalogue). — Smetana & Král 2006: 222 (catalogue). — Coca-Abia 2008: 674, 683, figs 1–5, 8–9 (type material; in key). — Bezděk 2016: 272. — Gao et al. 2018: 17 (catalogue); 2019: 462 (species list; in key).

Shangaia vestita – Itoh 1990: 5 (synonym of Miridiba trichophora ). — Smetana & Král 2006: 222 (catalogue).

Diagnosis

External morphology of adult ( Fig. 24 ). Length 12.4–18.0 mm. Dorsal surface with long and yellowish pubescence. Clypeus flat with anterior edge almost straight, oblique laterally; surface glabrous. Clypeal suture almost straight. Frontal carina sharp. Anterior margin of pronotum with pubescence; lateral margins smooth; anterior angles obtuse, not projected forward. Prosternal process conical in shape, bulging ventrally. Scutellum glabrous, shiny, punctures tiny. Epipleuron with pubescence. Foretibia with moderately developed dorsal carina; insertion of inner spur almost equidistant between second and third outer tooth. Meso- and metatibiae with a weak transverse carina continuous without dorsal and ventral prominences; inner margin of dorsal surface with spines. Prepygidium with pubescence shorter than those of pygidium, punctures irregularly distributed. Pygidium with surface irregularly punctate and conspicuous pubescence irregularly in length. Ventrite 5 moderately depressed at posterior half. Male genitalia ( Figs 2–3 ): Ventral face of dorsal branches with pubescent granules ( Fig. 2C ); apices of dorsal branches moderately curved downwardly, with a small sharp tip. Endophallus with a basiconic spine and a raspula with sensilla more robust towards distal end ( Fig. 3 ). Apophysis of temones separated from each other at distal end. Female genitalia ( Fig. 25 ) described in the morphotype I “ Trichophora ”.

Material examined

Paralectotype (here indicated) CHINA • ♂; “ Rhizotrogus trichophorus Fairm., Tchang-Yang ” [Tchang Yang, now Changyang , a road in Shanghai]; “ Type ”; “Museum Paris 1906 Coll. Leon Fairmaire ”; “ Miridiba trichophora ( Fairmaire, 1891) CH. Bu Gao & M. Coca-Abia det. 2017”; MNHN .

Other material

CHINA – Hebei Prov. • 1 ♂; Cangxian; Gao det.; SYAU . – Henan Prov. • 1 ♀; Yuanyang, Jintang ; 14 Apr. 1973; Gao det.; SYAU . – Jiangxi Prov. • 1 ♂; Nanchang, Liantang Town ; Apr. 1953; SYAU . – Shaanxi Prov. • 1 ♂; Xianyang ; 22 Nov. 1971; Gao det.; SYAU . – Shandong Prov. • 2 ♂♂; Weifang, Zhucheng ; May 1977; Gao det.; SYAU .

Remarks

Coca-Abia (2008) designated the lectotype based on a specimen preserved in the Hungarian Natural History Museum (Budapest). An additional syntype has been found in the Léon Fairmaire collection (MNHN) with an identification label handwritten, specifying Tchang-Yang as locality. This locality was cited by Fairmaire in the original description, which makes it the typical locality. According to the ICZN (Art. 72.4.1.1) “For a nominal species or subspecies established before 2000, any evidence, published or unpublished, may be taken into account to determine what specimens constitute the type series” (sic). Two pieces of evidence support our decision to consider this specimen belonging to the type series: it is preserved in the collection of L. Fairmaire and has a handwritten label specifying Tchang-Yang as locality. Thus, this syntype specimen is indicated herein as paralectotype.

Distribution

China (Anhui, Beijing, Chongqing, Gansu, Guizhou, Fujian, Hebei, Henan, Hubei, Jiangsu, Jiangxi, Liaoning, Neimengol, Shaan Xi, Shandong, Shanghai, Shanxi, Sichuan, Tianjin, Zhejiang).

Figures

Figs 2–4. Morphotype I “Trichophora”. 2–3. Male genitalia of M. trichophora (Fairmaire, 1891), paralectotype (MNHN). 2. Parameres in dorsal (A), ventral (B) and lateral (C) views. 3. Endophallus in lateral view. 4. Female genitalia of M. abdominalis (Hope, 1831), lectotype (BMNH), in dorsal (A) and ventral (B) views. Scale bars = 1.0 mm.

Figs 24–25. Miridiba trichophora (Fairmaire, 1891). 24. Habitus in dorsal view, paralectotype (MNHN). 25. Female genitalia in ventral view, non-type (SYAU). Scale bars: 24 = 5.0 mm; 25 = 1.0 mm.