Thyestetha Pascoe 1865
Creators: name: Eberle, Jonas
name: Tänzler, Rene
name: Riedel, Alexander
Publisher: name: Zenodo
Year: 2012
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Curculionidae
Thyestetha

description: Key to the species of Thyestetha
1 Elytral disc glabrous, impunctate (Figs. 11, 13–14, 18). Rostral canal subglabrous................................... 2
1’ Elytral disc with distinct strial punctures (Figs. 10, 12, 15–17). Rostral canal at least between procoxae squamose......... 5
2 Prothorax and elytra with colored lustre (Figs. 9, 18). Elytra 0.8 X wider than long...... T. splendens Eberle & Riedel sp. n.
2’ Prothorax and elytra polished, but without colored lustre. Elytra ca. 1.0 X as wide as long............................ 3
3 Elytra ferruginous except apical half laterally black (Fig. 11). Aedeagus in profile less markedly curved (Fig. 40)..................................................................................... T. discolor Eberle & Riedel sp. n.
3’ Elytra uniformly black. Aedeagus in profile markedly curved (Figs. 42, 46)........................................ 4
4 Sides of aedeagus subapically converging in straight line (Fig. 41)...................... T. glabra Eberle & Riedel sp. n.
4’ Sides of aedeagus subapically converging in sinuate line (Fig. 45)...................... T. lubrica Eberle & Riedel sp. n.
5 Elytral disc with minute punctures; interstices between punctures 4– 6 X their diameter; female elytral apex medially distinctly emarginate.............................................................. T. emarginata Eberle & Riedel sp. n.
5’ Elytral disc with small punctures; interstices between punctures <4 X their diameter; female elytral apex without emargination....................................................................................................6
6 Elytra black. Apex of aedeagus weakly curved ventrad (Fig. 50)....................... T. oblita Eberle & Riedel sp. n.
6’ Elytra ferruginous, sometimes very dark. Apex of aedeagus markedly curved ventrad (Figs. 38, 48, 52).................. 7
7 Habitus elongate; elytra usually ferruginuous, sometimes black, apex extended (Figs. 6, 15, 69–70). Rostral canal and marginal carina densely covered with broad whitish scales. Aedeagus with sides apically converging in sinuate line (Fig. 47).. T. nitida
7’ Habitus shorter, ovate; elytra black, apex less distinctly extended (Figs. 1, 8, 10, 17). Rostral canal only between procoxae squamose; marginal carina bordered with small whitish scales. Aedeagus with sides apically converging in straight line (Figs. 37, 51).............................................................................................. 8
8 Interstices between punctures of elytral striae 1– 3 X diameter of punctures; male metafemur in apical third with weakly protruding posteroventral ridge (Fig. 27)......................................... T. puncticollis Eberle & Riedel sp. n.
8’ Interstices between punctures of elytral striae 2– 4 X diameter of punctures; male metafemur in apical third with sharply protruding posteroventral ridge (Fig. 26)........................................................... T. carbonaria
description: Published as part of Eberle, Jonas, Tänzler, Rene & Riedel, Alexander, 2012, Revision and phylogenetic analysis of the Papuan weevil genus Thyestetha Pascoe (Coleoptera, Curculionidae, Cryptorhynchinae), pp. 1-28 in Zootaxa 3355 (1) on page 4, DOI: 10.11646/zootaxa.3355.1.1, http://zenodo.org/record/214456