Indasclera nigripes, Švihla, 2009

Švihla, Vladimír, 2009, Three new Indasclera species from Laos including new data on distribution and list of species (Coleoptera: Oedemeridae), Acta Entomologica Musei Nationalis Pragae 49 (2), pp. 795-804 : 796-797

Indasclera nigripes sp. nov.

( Figs. 1, 3–6 )

Type locality. Northeastern Laos, Houa Phan province,Ban Saluei,Mt.Phou Pane,20°12–13.5′ N 103°59.5′ – 104°01′E, 1340–1870 m a.s.l.

Type material. HOLOTYPE: J ( NMPC), ‘ LAOS-NE, Houa Phan prov. , Ban Saluei → Mt. Phou Pane, 20°12–13.5′ N 103°59.5′ – 104°01′E, 1340–1870 m, 15.iv.–15.v.2008, Lao collectors leg .’ PARATYPES: 1 J, same data as holotype ( NHMB), 1 ♀, same data as holotype ( NMPC).

Description. Coloration ( Fig. 1 ). Head, thorax, abdomen and elytra yellow, mouthparts yellow to chestnut brown, maxillary palpi, antennae and legs excluding bases of coxae black.

Male. Eyes rather small, reniform, moderately protruding, head across eyes slightly wider than pronotum, head behind eyes arcuately narrowing posteriorly. Terminal palpomere of maxillary palpus securiform. Antennae filiform, reaching ca. two thirds of elytral length, last antennomere slightly but distinctly constricted near behind its midlength. Surface of head finely and densely imbricate-punctate, with fine yellow recumbent pubescence, matt. Pronotum slightly longer than wide, slightly cordifom, anterior margin nearly straight, very slightly sinuate in middle, anterior corners almost rectangular, lateral margins sinuate, converging posteriorly, posterior corners obtusely rounded, posterior margin rounded. Surface sculpture and pubescence of pronotum like that of head, matt, pair of anterior depressions very shallow but distinct, posterior depression absent, posterior margin bordered. Elytra parallel-sided in anterior two thirds, then arcuately narrowing posteriorly, apices rounded. Elytral surface imbricate-punctate, punctation rather more sparse than that of head and pronotum, with yellow pubescence, matt; venation of elytra very slightly indicated, visible only due to converging pubescence. Last abdominal sternite widely rounded, its apical margin nearly straight, last tergite exceeding last sternite by ca. one third, rounded apically, projections of urite VIII flat, slender, moderately sickle-shaped, tegmen and aedeagus as in Figs. 3–6 .

Female similar to male except last abdominal tergite, which only slightly exceeds apically last sternite and both are rounded apically.

Length (J ♀): 5.5–6.2 mm.

Differential diagnosis. Indasclera nigripes sp. nov. belongs to the I. haemorrhoidalis species group as defined by ŠVIHLA (1997). It is similar to I. laosensis Švihla, 2004 (occurring at the same locality), from which it differs by entirely black femora, slightly less cordiform pronotum, parallel to slightly divergent parameres and much slender aedeagus with straight apex (cf. ŠVIHLA 2004).

Etymology. Derived from Latin niger (= black) and pedes (= legs) in reference to the characteristically black legs by which the new species differs from the closely related I. laosensis .

Distribution. Northern Laos.

Figures

Figs. 1–10. 1, 3–6 – Indasclera nigripes sp. nov.; 2, 7–10 – I. josefi sp.nov.1–2 – habitus; 3, 7 – tegmen, ventral view; 4, 8 – apical part of tegmen, lateral view; 5, 9 – aedeagus, lateral view; 6, 10 – apex of aedeagus, dorsal view.