Astycus is a genus of beetles belonging to the family Curculionidae. Species are distributed throughout India, Sri Lanka, Myanmar, China, Thailand and Sumatra.
Description Head consists with lateral eyes which are moderate and prominent. Rostrum deflected and longer than the head. Mentum trapeziform, whereas the emargination of the submentum truncate and without a peduncle. Antennce inserted before the middle of the rostrum with cylindrical scape. Prothorax with truncate apex, truncate or bisinuate base and the rounded sides. Scutellum present, with variable shapes. Elytra with elevated and sinuate basal margin. There is a distinct humeral callus constituting a true shoulder. Sternum with sometimes separated front coxa. Venter with rounded intercoxal process. Legs with rather longer front pair which is distinctly stouter than the others.
Species Astycus acutipennis Guérin-Méneville Astycus adamsoni Marshall, 1916 Astycus adultus Schoenherr, 1823 Astycus aequalis G.A.K.Marshall, 1916 Astycus apicatus Marshall, 1916 Astycus armatipes Marshall, 1916 Astycus aureolus A.Hustache, 1937 Astycus aurovittatus G.A.K.Marshall, 1916 Astycus bilineatus Marshall, 1916 Astycus canus Marshall, 1916 Astycus chinensis Fairmaire, 1889 Astycus chrysochlorus Dejean, 1835 Astycus cinereus Marshall, 1916 Astycus cinnamomeus Marshall, 1916 Astycus cuprescens J.Faust, 1895 Astycus destructor G.A.K.Marshall, 1916 Astycus distigma A.Hustache, 1937 Astycus doriae G.A.K.Marshall, 1916 Astycus ebeninus G.A.K.Marshall, 1916 Astycus femoralis G.A.K.Marshall, 1916 Astycus flavovittatus Pascoe, 1881 Astycus gestroi Marshall, 1916 Astycus glabrifrons Marshall, 1916 Astycus griseus Desbrochers, 1891 Astycus hampsoni Marshall, 1916 Astycus horni Marshall, 1916 Astycus immunis G.A.K.Marshall, 1916 Astycus ischnomioides A.Hustache, 1937 Astycus lateralis Schoenherr, 1834 Astycus levicollis Marshall, 1916 Astycus lewisi Marshall, 1916 Astycus limbatus Marshall, 1916 Astycus mysticus Emden & F.van, 1936 Astycus neglectus Marshall, 1916 Astycus obtusus J.Sturm, 1826 Astycus oculatus G.A.K.Marshall, 1916 Astycus quadrivirgatus Desbrochers, 1891 Astycus rutilans K.M.Heller, 1922 Astycus scintillans Pascoe, 1887 Astycus subacuminatus Faust, 1892 Astycus subacuminntus J.Faust, 1892 Astycus submarginalis G.A.K.Marshall, 1916 Astycus sulphurifer E.Voss, 1933 Astycus suturalis G.A.K.Marshall, 1916 Astycus sylhetensis Marshall, 1916 Astycus tessellatus A.Hustache, 1937 Astycus tibialis Günther & Zumpt, 1933 Astycus variabilis Gyllenhal, 1834 Astycus viridianus Emden & F.van, 1936
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