Indasclera josefi, 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 : 797-798

Indasclera josefi sp. nov.

( Figs. 2, 7–10 )

Type locality. Northern Laos, Xieng Khouang province, Mt. Phou Samsoum, 2000 m a.s.l.

Type material. HOLOTYPE: J ( KMOJ), ‘[Northern] Laos, Xieng Khouang [province], Mt. Phou Samsoun , alt. 2000 m, 22.iv.2008 ’. PARATYPES: 3 JJ ( HAYJ), same data as holotype ; 4 JJ 1 ♀ ( HAYJ, NMPC) ‘[Northeastern] Laos, Hou [a] P[h]an [province], Mt. Phou Pan [e], 14.–17.iii.2005, T. Niisato leg. ’; 2 ♀♀ ( 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 .’.

Description. Coloration ( Fig. 2 ). Head greenish olivaceous, mandibles sooty with sepia tips, basal palpomere of maxillary palpus terra-cotta, palpomere 2 sienna, terminal palpomere distinctly darker, sooty in male, palpi entirely sepia to sooty in female. Antennae sooty, becoming gradually paler to chestnut brown toward apex. Prothorax yellow, meso- and metasternum, abdomen, scutellum and elytra greenish olivaceous, legs dark greenish, coxae rusty.

Male. Eyes rather small, moderately reniform, protruding, head across eyes slightly but distinctly wider than pronotum, head behind eyes arcuately narrowing posteriorly. Antennae filiform, slightly exceeding elytral midlength, terminal antennomere slightly constricted on one side near behind its midlength. Terminal palpomere of maxillary palpus securiform. Surface of head densely and finely imbricate-punctate, bare, matt. Pronotum as long as wide, cordiform, its anterior margin very slightly sinuate in its middle, nearly straight, anterior corners rounded, lateral margins rather sinuate, converging posteriorly, posterior corners rounded, posterior margin widely rounded. Surface of pronotum punctate like that of head, matt, bare, only anterior and posterior margin with line of very short, fine yellow hairs. Anterior pair of pronotal depressions well developed, rather deep, posterior one absent, posterior margin of pronotum finely bordered. Elytra parallel-sided in basal half, then moderately narrowing posteriorly, apices rounded. Surface of elytra more finely and sparsely imbricate-punctate than surface of head and pronotum, covered by short, fine, yellow recumbent pubescence, matt; elytral venation absent. Last abdominal sternite widely rounded with small, rather shallow emargination at apex, last tergite ca. twice as long as last sternite, subtriangular, rounded apically, projections of urite VIII slender, flat, moderately sickle-shaped, tegmen and aedeagus as in Figs. 7–10 .

Female. Antennae very slightly shorter than in male, reaching elytral midlength, last abdominal tergite only slightly exceeding last sternite, both segments subtriangular and rounded apically.

Length (J ♀): 5.1–7.3 mm.

Differential diagnosis. Indasclera josefi sp. nov. belongs to the I. haemorrhoidalis species group as defined by ŠVIHLA (1997). According to the shape of the aedeagus, I. josefi sp. nov. is similar to I. thibetana ( Pic, 1915) from Tibet but differs from the latter and other species of the group by closely set parameres.

Etymology. I dedicate this species to my colleague and friend Josef Jelínek, well-known specialist in the family Nitidulidae , on the occasion of his 70th birthday.

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.