Pseudeucinetus papuanus, Yoshitomi, 2019

Yoshitomi, Hiroyuki, 2019, Review of the Asian Thaumastodinae (Coleoptera, Byrrhoidea, Limnichidae), with a phylogeny of the genera, European Journal of Taxonomy 583, pp. 1-45 : 15-18

Pseudeucinetus papuanus sp. nov.

urn:lsid:zoobank.org:act:978D5D6D-8D48-425D-AB1B-0536A2E10753

Figs 9A , 10

Etymology

This species is named after its type locality.

Material examined

Holotype

PAPUA NEW GUINEA • ♂; “NEW GUINEA NETH. Waris, S. of Hollandia, 450–500m VIII-I-2-1959”; “ T. C. Maa Collector BISHOP”; “At Light”; BPBM.

Description

Male

BODY. Oval, slightly convex dorsally, shiny, closely covered with suberect silver setae. Coloration of body black; antennae and legs blackish brown.

HEAD. Moderate in size; clypeus with straight anterior margin. Eyes large; distance between eyes about 3 eye facets.

ANTENNAE. Short, reaching about anterior third of pronotum. PRONOTUM. Widest at base; lateral margins straight; posterior margin gently bisinuate; PW/ PL 2.33. Scutellum small, square.

ELYTRA. Oblong, widest at basal third; EL/ EW 1.43; EL/ PL 4.00; EW/PW 1.20; TL/ EW 1.79. Fore tarsomere I largely expanded, longer than remaining fore tarsomeres combined.

ABDOMEN. Sternite VII ( Fig. 10A ) with three pairs of anterior extra setae (a) and two pairs of lateral extra setae (b). Sternite IX ( Fig. 10B ) moderately sclerotized, with long and pointed apical plates.

AEDEAGUS ( Fig. 10 C–D). Long, well sclerotized; basal piece oblong, subparallel-sided; lateral lobes long, about 1.4 times as long as basal piece, straight on lateral margins, with a pair of obtuse subapical inner projections on apical fifth; median lobe long, about 0.9 times as long as lateral lobes, nipple-like at apex; ML/ BL 1.29; ML/ LL 0.89.

Female

Unknown.

Measurements

Male (n = 1): TL 2.15 mm; PW 1.00 mm; PL 0.43 mm; EL 1.72 mm; EW 1.20 mm.

Distribution

Papua New Guinea.

Remarks

This species is related to Pseudeucinetus novabritannica from the Bismarck Archipelago and P. solomonicus from the Solomon Islands, and differs from them in the following characteristics: 1) subapical inner projection of lateral lobe obvious (large and distinct in P. solomonicus ); 2) subbasal inner projection of lateral lobe absent (present in P. novabritannica ); and 3) basal piece long, about 0.7 times as long as lateral lobe (about 0.5 in P. novabritannica , about 0.8 in P. solomonicus ).

Pseudeucinetus javanicus Yoshitomi & Putra, 2010 Figs 4A, D , 9C

Pseudeucinetus javanicus Yoshitomi & Putra, 2010: 144 .

Material examined

INDONESIA • 1 ♂; “ INDONESIA: Lombok I: Aik Bukak 2. VII. 1978 ”; “ J. T. Medler Coll. BISHOP Museum Acc. #1979. 483”; BPBM .

Distribution

Indonesia (Java, Lombok).

Remarks

This is the first record of this species from Lombok Island.

Figures

Fig. 9. Pseudeucinetus spp. A. P. papuanus sp. nov., holotype (BPBM). B. P. uenoi Spangler, 1995 (EUMJ). C. P. javanicus Yoshitomi & Putra, 2010, paratype (EUMJ). D. P. solomonicus Yoshitomi & Putra, 2010, paratype (EUMJ). E. P. zygops Heller, 1921 (EUMJ). Scale bars: 1.0 mm.

Fig. 10. Pseudeucinetus papuanus sp. nov., male genitalia, holotype, BPBM. A. Sternite VII. B. Sternite IX. C. Aedeagus, ventral view. D. Aedeagus, right lateral view.

Fig. 4. Habitats (A–C) and living adults (D–F) of Asian Thaumastodinae Champion, 1924. A. Dondong River, Pengkol, Yogyakarta special Region, Java, Indonesia (type locality of Acontosceles javanicus Yoshitomi & Putra, 2011 (F) and Pseudeucinetus javanicus Yoshitomi & Putra, 2010 (D)). B. Nusa Dua, Bali, Indonesia (type locality of Mexico baliensis sp. nov.). C. Hirashima, Ogasawara, Japan (type locality of Mexico ogasawaraensis sp. nov.). D. Type locality of Pseudeucinetus javanicus Yoshitomi & Putra, 2010. E. Mexico masamii (Satô, 1994) in Shikinejima, Izu Islands. F. Type locality of Acontosceles javanicus Yoshitomi & Putra, 2011.