Miridiba dohrni
Creators: name: Gao, Chuan-bu
name: Coca-Abia, María Milagro
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Melolonthidae
Miridiba
Miridiba dohrni

description: Miridiba dohrni (Brenske, 1894)
Figs 69–72
Holotrichia dohrni Brenske, 1894b: 277 (type loc.: Deli, Sumatra). Holotrichia dohrni – Dalla Torre 1912: 202 (catalogue). Miridiba dohrni – Matsumoto 2016: 3, figs 4–8 (combination).
Diagnosis
External morphology of adult (Fig. 69). Body size 23–25 mm. Dorsal surface glabrous, shiny appearance. Clypeus flat, oblique sides, anterior edge emarginate at middle. Frons with continuous carina. Pronotal surface densely punctate; anterior margin glabrous, narrowed at middle and at sides, without concavities at lateral ends; posterior margin glabrous, at most with very short setae at sides; lateral margins smooth, glabrous and with anterior third reflexed upwards; anterior and posterior angles almost right and rounded, respectively. Elytra shiny, punctures denser at base than apices; epipleuron with a few short setae at basal part. Foretibia with gently carina. Meso- and metatibia with incomplete transverse carina; inner margin of dorsal surface without spines. Pygidium heart-shaped, densely punctate, with a central depression in male; pygidium concave, moderately punctate and with two strong pointed protuberances in females, glabrous, only short setae along apical margin at both sexes. Ventrites 3 and 4 with sparse pubescence and inconspicuous punctures. Ventrite 5 strongly depressed at posterior half in males; moderately depressed in females, with pubescence of different length at both sexes, with conspicuous punctures. Ventrite 6 bulging anteriorly, with long pubescence near posterior margin. Male genitalia: parameres (Fig. 70) with short dorsal branches separated each other and blunt apices; ventral branches longer than dorsal ones, divergent, arcuate, each one with a spine at proximal position. Endophallus covered with sensilla, denser at distal end, without spines (Fig. 71). Female genitalia (Fig. 72). Gonopore fold with a strong quadrangular sensory plate. Vestigial sternites reduced with sensillae.
Material examined
Lectotype (here designated) INDONESIA • ♂; “ Sumatra, Deli”; “Dohrni Brensk”; “SYNTYPUS Holotrichia dohrni Brenske, 1894 labelled by MNHUB 2015”; “Lectotype Miridiba dohrni (Brenske 1894) Chuan-bu Gao & Coca-Abia det. 2019”; MFNB.
Paralectotypes (here indicated) INDONESIA • 1 ♂; “Soekaranda Januar 1894 Dohrn”; “Coll Brenske”; “ Holotrichia Dohrni Brnsk ”; “SYNTYPUS Holotrichia dohrni Brenske, 1894 labelled by MNHUB 2015”; “Paralectotype Miridiba dohrni (Brenske 1894) Chuan-bu Gao & Coca-Abia det. 2019”; MFNB • 1 ♀; “Deli Sumatra ”; “Coll Brenske”; “ Holotrichia Dohrni Brnsk ”; “SYNTYPUS Holotrichia dohrni Brenske, 1894 labelled by MNHUB 2015”; “Paralectotype Miridiba dohrni (Brenske 1894) Chuan-bu Gao & Coca-Abia det. 2019”; MFNB.
Remarks
Matsumoto (2016) studied three syntypes of Holotrichia dohrni (two males and one female), transferred this species to Miridiba and considered M. dohrni closely allied to Miridiba gravida (Sharp, 1881). We have studied three syntypes (MFNB) and designated them as a lectotype and two paralectotypes. Also, we agree with the transfer of H. dohrni to Miridiba and the similarities between M. leucophthalma and M. gravida. Male genitalia matches morphotype III “ Leucophthalma ” above described. Hence, this species is included in this genital morphotype.
Distribution
Indonesia (Sumatra).
description: Published as part of Gao, Chuan-bu & Coca-Abia, María Milagro, 2021, Revision of the genus Miridiba Reitter, 1902 (Coleoptera, Scarabaeidae, Melolonthinae): genital morphotypes and new taxonomic data, pp. 1-94 in European Journal of Taxonomy 749 on pages 52-54, DOI: 10.5852/ejt.2021.749.1355, http://zenodo.org/record/4770293