Adapterops hankae Trýzna, 2012

Trýzna, Miloš & Baňař, Petr, 2012, New species of Adapterops (Coleoptera: Anthribidae) from east Madagascar with a key to species and notes on sexual dimorphism and biodiversity of the family, Acta Entomologica Musei Nationalis Pragae 52 (2), pp. 475-485 : 479-482

Adapterops hankae Trýzna sp. nov.

( Figs. 3 , 10 , 15 )

Type locality. East Madagascar, Tamatave province, Andasibe-Mantadia National Park, Analamazaotra forest.

Type material. HOLOTYPE: ♀, MADAGASCAR: TAMATAVE: ‘ Madagascar , 5.-13.ii.2007, / Andasibe-Mantadia N.P., / Analamazaotra forest, // S 18°56´45.0´´, / E 48°25´08.0´´, / 955 m, M. Trýzna leg.’ // ‘ HOLOTYPE / Adapterops hankae sp. nov., / M. Trýzna det., 2012’ [p, red label] ( BSNPC) .

Description. Female (holotype). Measurements (in mm): Total body length – 3.49. Head: total length – 0.59; length of rostrum – 0.28; maximum width of rostrum – 0.47; length of eye – 0.31; maximum width across eyes – 0.94; minimum distance between eyes – 0.34. Antenna: length of segments: I – 0.24, II – 0.11, III – 0.13, IV – 0.13, V – 0.14, VI – 0.12, VII – 0.11, VIII – 0.09, IX – 0.20, X – 0.14, XI – 0.20. Pronotum: maximum length – 1.22; width at carina – 1.42; minimum width – 0.80. Elytra: maximum length – 2.42; maximum width – 1.60.

Colour of all body parts generally black; scape, proximal part of pedicel and tarsomeres 3–5 somewhat paler, dark brown to blackish. Funicle paler than rest of antenna, brown. Antennal club black. Pronotum and elytra with almost regular spots of whitish to pale yellow pubescence.

Head. Rostrum weakly convex, anterior part with fine sculpture. Frons with narrow longitudinal carina in middle ( Fig. 10 ), reaching from proximal edge of eyes to the narrowest part of rostrum. Eyes large, ocular index 1.13. Ratio of maximum width across eyes to maximum width of rostrum 2.00. Antennae ( Fig. 15 ) slightly longer than head and pronotum together. Funicle thin, club robust.

Pronotum transverse (ratio of its length to its width at carina 0.86), gradually narrowed anteriorly, disc convex in its middle. Dorsal surface with several whitish to pale yellow spots. Coarse sculpture of basal half becomes more delicate anteriorly. Dorsal transverse carina strongly curved. Postero-lateral edges of pronotum protruding posteriorly, forming almost acutangulate apex. Posterior margin conspicuously convex, fitting in concavity on basis of elytra. Ventral part of thorax with dense, appressed yellowish pubescence.

Elytra oval, slightly narrowed posteriorly, with numerous brightly bordered whitish spots ( Fig. 3 ). Ratio of maximum length of elytra to their maximum width 1.51. Anterior margin of elytra concave, corresponding with convexity of posterior margin of pronotum. Surface of elytra deeply striate, width of each stria distinctly narrower than width of interval. Legs densely covered with semi-erect whitish pubescence. Abdomen including pygidium ventrally covered with fine, appressed, yellowish pubescence.

Male. Unknown. Diferential diagnosis. The new species is similar to A. nasalis in general appearance. It differs from the latter in habitus somewhat more robust; eye larger; dorsal margin of scrobes less expanded to the rostrum; frons and rostrum black; legs distinctly black (with exception of tarsomeres 3–5 which are dark brown); venter of thorax and abdomen including pygidium uniformly black (these parts brown to dark brown in A. nasalis ); pedicel dark brown to blackish (light brown in A. nasalis ). See also the Key.

Fig. 18. Distribution of Adapterops species in Etymology. Dedicated to Mrs Hanka Ober-

Madagascar. reiterová, the member of Czech-Madagascan expedition in 2011.

Habitat. The holotype was captured by beating a dead branch lying on the ground. The branch with the widest twigs ca. 15 cm in diameter had broken off from an unidentified species of deciduous tree in secondary forest, most probably no more than 2 years ago, was still covered with the bark and situated in a slightly sunny place ( Fig. 6 ) (see more in Discussion).

Distribution. East Madagascar.

Figures

Figs.1–5. Habitus of Adapterops species. 1–2 – A. festivus Frieser, 2010: 1 – male, 2 – female; 3 – A. hankae Trýzna, sp. nov., female holotype; 4–5 – A. nasalis Frieser, 2010: 4 – male, 5 – female paratype. Scale bar = 1.0 mm.

Figs. 8–12. Head of Adapterops species, dorsal view, vestiture omitted. 8–9 – A. festivus Frieser, 2010: 8 – male, 9 – female; 10 – A. hankae Trýzna sp. nov., female holotype; 11–12 – A. nasalis Frieser, 2010: 11 – male, 12 – female paratype. Scale bar = 0.5 mm.

Figs. 13–17. Right antenna of Adapterops species, vestiture omitted. 13–14 – A. festivus Frieser, 2010 (13 – male, 14 – female); 15 – A. hankae Trýzna sp. nov., female holotype. 16–17 – A. nasalis Frieser, 2010 (16 – male, 17 – female paratype). Scale bar = 0.2 mm.

Figs. 6–7. 6 – dead branch inside forest in Andasibe-Mantadia NP, Analamazaotra forest, microhabitat of Adapterops hankae Trýzna, sp. nov.; 7 – rain forest in Ambondrombe Massif, type locality of Adapterops nasalis Frieser, 2010.