Dinas species

Skuhrovec, JiĜí & Batelka, Jan, 2014, Taxonomy of the Cape Verde endemic weevil genus Dinas (Coleoptera: Curculionidae: Entiminae). Part I: Description of a new subgenus, and two new species from São Nicolau Island, Acta Entomologica Musei Nationalis Pragae 54 (1), pp. 315-336 : 329

Key to Dinas species of São Nicolau Island

1. Body length 7.2 to 9.3 mm ( Fig. 4A ). Epifrons with deep median longitudinal furrow in its whole length and reaching to the vertex or the occiput, and with transversal striae in males ( Fig. 2B ). Pronotum with large tubercles ( Fig. 2D ). Elytra subglobose; integument black covered sparsely with small circular scales ( Fig. 2H ). ............................................ ........................................................................................... Dinas (s. str.) strakai sp. nov.

– Body length 3.6 to 6.0 mm ( Fig. 3A ). Epifrons with shallow median longitudinal furrow only in part of its length, and without any transversal striae in males ( Fig. 2A ). Pronotum punctate, not tuberculate ( Fig. 2C ). Elytra elongated and slightly oval; integument black (brown) covered densely with small circular to slightly oval scales ( Fig. 2G ). ............. 2

2. Elytra without stout, long, erect setae ( Fig. 3C ). ............................................................... ........................................................ Dinas (Microspina) sitonaeformis Wollaston, 1867

– Elytra with distinct stout, long, erect setae at least in apical third of elytra ( Figs 3B, 3D ). ................................................................................................................................. 3

3. Stout, apically widened and flattened, long, erect setae on whole elytra ( Fig. 3D ). ......... .............................................................. Dinas (Microspina) angusticeps Roudier, 1957

– Stout, apically pointed, not flattened, long, erect setae only on apical third of elytra ( Fig. 3B ). ....................................................................... Dinas (Microspina) afonsoi sp. nov.

Figures

Fig. 4. Dinas (s. str.) strakai sp. nov., holotype, male (A–D): A – habitus, dorsal view; B – aedeagus, dorsal and lateral view; C – spiculum gastrale; D – elytra, dorsal view; E – elytra of Dinas (s. str.) rugicollis Wollaston, 1867, dorsal view. Scales: 1 mm, scale with ‘*’=2 mm.

Fig. 2. Differential diagnosis of the subgenera of Dinas: Dinas (Microspina) afonsoi sp. nov.:A – head, dorsal view; C – pronotum; G – elytra, dorsal view; Dinas (Microspina) sitonaeformis Wollaston, 1867: E – spina on profemora; Dinas (s. str.) strakai sp. nov.: B – variability of rostrum of Dinas (s. str.) strakai sp. nov., dorsal view; D – pronotum; F – spina on profemora; H – elytra, male, dorsal view.

Fig. 3. Dinas (Microspina) afonsoi sp. nov., holotype, male (A–B, E–F), female (G–I): A – habitus, dorsal view; B – elytra, lateral view; C – elytra of Dinas (Microspina) sitonaeformis Wollaston, 1867, lateral view; D – elytra of Dinas (Microspina) angusticeps Roudier, 1957, lateral view; E – aedeagus, dorsal and lateral view; F – spiculum gastrale; G – female sternite VIII; H – ovipositor; I – spermatheca. Scales: 1 mm, scale with ‘*’=2 mm, scale with ‘**’=0.5 mm.