Mexico ogasawaraensis Yoshitomi 2019, sp. nov.
Creators: name: Yoshitomi, Hiroyuki
Publisher: name: Zenodo
Year: 2019
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Limnichidae
Mexico
Mexico ogasawaraensis

description: Mexico ogasawaraensis sp. nov.
urn:lsid:zoobank.org:act: 8B1989C3-5D1B-4E9C-A87F-0ED19524F6D4
Figs 4C, 11C, 12
Etymology
This species is named after its type locality.
Material examined
Holotype JAPAN • ♂; “[OG2] Meijima, Hahajima-guntô, Ogasawara Isls., Japan, 26°567418″ N, 142°227674″ E, 23. IX. 2012, H. Yoshitomi leg.”; EUMJ.
Paratypes JAPAN • 4 ♂♂, 2 ex.; same collection data as for holotype; EUMJ • 1 ♂, 1 ♀; same collection data as for preceding; NSMT • 1 ♂, 1 ♀; same collection data as for preceding; NMW • 1 ♀; “[OG5] Minamizaki, Hahajima, Ogasawara Isls., Japan, 26°37.491″ N, 142°10.600″ E, 25. IX. 2012, H. Yoshitomi leg.”; EUMJ • 4 ♂♂, 2 ex.; “[OG4] Hirashima, Hahajima-guntô, Ogasawara Isls., Japan, 26°35.169″ N, 142°09.177″ E, 24. IX. 2012, H. Yoshitomi leg.”; EUMJ.
Description
Male
BODY. Oval, slightly convex dorsally, shiny, closely covered with suberect golden setae. Coloration of body black; elytra with indistinct and irregular silver spots consisting of erect setae.
HEAD. Closely and finely punctate, slightly convex between eyes; distance between eyes as long as an eye diameter in dorsal view.
ANTENNAE. Short, reaching about anterior third of pronotum.
PRONOTUM. Closely punctate, gently arcuate on lateral margins; PW/ PL 1.92–2.30 (2.09). Scutellum equilateral triangular, punctate as in pronotum.
ELYTRA. Oval, widest at base, gently tapered posteriorly; caudal third of lateral margins slightly and indistinctly serrate; EL/EW 1.40–1.54 (1.48); EL/ PL 3.25–4.00 (3.58); EW/ PW 1.12–1.20 (1.16); TL/ EW 1.80–1.96 (1.89).
ABDOMEN. Sternite VII (Fig. 12A) bearing about 40 long setae on mesal part, pointed at postero-lateral corners, slightly projecting on median part of caudal margin. Sternite VIII (Fig. 12B) slightly sclerotized, small, Y-shaped. Sternite IX (Fig. 12C) moderately sclerotized, relatively wide, strongly curved in basal part, with long and pointed apical plates.
AEDEAGUS (Fig. 12 D–G). Long and slender, well sclerotized; basal piece oval; lateral lobes short and slender, with three apical setae; median lobe long and slender, slightly expanded in apical fifth, pointed at apex, finely punctuate; ventral plates slender, reaching about apical fifth of median lobe, mostly fused to median lobe; ML/ BL 2.94; ML/ LL 2.42.
Female
Sexual dimorphism slight. Sternite VII (Fig. 12H) bearing about 30 long setae on mesal part, pointed but minutely concaved at postero-lateral corners, slightly projecting on median part of caudal margin. Urosternite (Fig. 12I) well sclerotized, T-shaped, with long and slender apodeme. Ovipositor (Fig. 12J) well sclerotized; coxite sparsely punctuate; apex of baculus bifid; approximate ratio of coxite and baculus (n = 1) 1.0:6.1.
Measurements
Unsexed (n = 20): TL 2.10–2.65 (2.39) mm; PW 0.98–1.20 (1.09) mm; PL 0.45–0.60 (0.52) mm; EL 1.65–2.05 (1.86) mm; EW 1.10–1.40 (1.26) mm.
Distribution
Japan: Ogasawara Islands (Hahajima, Meijima, Hirashima).
Remarks
This species appears to be closely related to M. baliensis sp. nov. based on the shape of the aedeagus, but differs from it in the following characteristics: sternite IX broad (slender in M. baliensis sp. nov.), median lobe pointed at apex (somewhat obtuse in M. baliensis sp. nov.) and apical setae on lateral lobes long (short in M. baliensis sp. nov.).
Biological notes
The type series was collected from the splash zone of wet rocks on a rocky seashore (Fig. 4C).
description: Published as part of Yoshitomi, Hiroyuki, 2019, Review of the Asian Thaumastodinae (Coleoptera, Byrrhoidea, Limnichidae), with a phylogeny of the genera, pp. 1-45 in European Journal of Taxonomy 583 on pages 20-23, DOI: 10.5852/ejt.2019.583, http://zenodo.org/record/3564532