Revision of type specimens of Astaena (Coleoptera: Scarabaeidae: Melolonthinae: Sericini) described by L. W. Saylor Author Pacheco, Thaynara L. 146CF81B-1394-456C-A768-BFFDE3E213D0 Laboratório de Coleoptera, Departamento de Entomologia, Museu Nacional, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil. & Centre of Taxonomy and Evolutionary Research, Zoologisches Forschungsmuseum Alexander Koenig, Bonn, Germany. thay.lpacheco@gmail.com Author Monné, Marcela L. 86B186B4-4297-4380-A98D-FC813B5D53A6&2FF2B7D6-1A6B-43C1-9966-A1A949FB2B05 Laboratório de Coleoptera, Departamento de Entomologia, Museu Nacional, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil. & Laboratório de Scarabaeoidologia, Departamento de Biologia e Zoologia, Instituto de Biociências, Universidade Federal de Mato Grosso, Cuiabá, Brazil. mlmonne2@gmail.com&vazdemello@gmail.com Author Vaz-De, Fernando Z. 2FF2B7D6-1A6B-43C1-9966-A1A949FB2B05 Laboratório de Scarabaeoidologia, Departamento de Biologia e Zoologia, Instituto de Biociências, Universidade Federal de Mato Grosso, Cuiabá, Brazil. vazdemello@gmail.com Author Ahrens, Dirk DEDCE5CF-AA11-4BBF-A2C6-D7C815019714 Centre of Taxonomy and Evolutionary Research, Zoologisches Forschungsmuseum Alexander Koenig, Bonn, Germany. ahrens.dirk_col@gmx.de text European Journal of Taxonomy 2021 2021-05-19 750 750 94 123 http://dx.doi.org/10.5852/ejt.2021.750.1365 journal article 4031 10.5852/ejt.2021.750.1365 818d0bc4-31a6-4319-86a3-6e6b16ab72df 2118-9773 5451747 CE5D8517-AC04-4AF9-BD78-A2D6E21D33A8 Astaena explaniceps Saylor, 1947 Figs 2E–I , 7A Astaena explaniceps Saylor, 1947b: 436 . Astaena explaniceps – Frey 1973: 341 (identification key). — Evans 2003: 22 (checklist). — Evans & Smith 2005: 7 (checklist); 2007: 7 (checklist); 2009: 7 (checklist). Type material examined Holotype ARGENTINA • ♂ ; “Salta Prov. Arg. S.A. / L.W. Saylor Collection / California Academy of Sciences Type nº 7911 / Holotype Astaena explaniceps L.W. Saylor ”; CAS . Holotype redescription MEASUREMENTS. Length: 9.2 mm . Width: 3.8 mm . HEAD. Reddish-brown, surface with upright setae. Labroclypeus, shape of anterior margin convex, posteriorly with dense punctation. Ocular canthus with terminal setae, ratio to eye: 1/2. Ratio third vs fourth antennomere: 1/3. Fourth antennomere, lateral projection absent. Ratio fifth vs fourth antennomere: 1/5. PRONOTUM AND ELYTRA.Surface of pronotum and elytra with setae. Pronotum unicolored, reddish-brown, widest at middle, anterior marginal line present, posterior marginal line absent, lateral margin strongly convex and smooth (not serrate), antero-lateral angle dorso-ventrally flattened, postero-lateral angle dorso-ventrally flattened, punctation on disc dense, setae of lateral margin sparse, median longitudinal excavation absent. Scutellum, punctures absent medially. Elytra unicolored, reddish-brown, surface opaque, microsculpture absent, punctation on intervals present and sparse, diameter of strial and interval punctation equal. ABDOMEN. Lateral carina present. Second visible ventrite without row of setae in medial region. Apical visible ventrite without suture to apical tergite. Fig. 2. A–D . Astaena excisipes Saylor, 1947 , holotype, ♀ (Type No. 7910; CAS). – E–I . A. explaniceps Saylor, 1947 , holotype, ♂ (Type No. 7911; CAS). – J–M . A. fusagona Saylor, 1946 , holotype, ♀ (Type No. 7912; CAS). A, J . Head and pronotum, dorsal view. B, G, K . labels. C, H, L . Habitus, dorsal view. D, I, M . Habitus, lateral view. E . Parameres, dorsal view. F . Aedeagus, lateral view. Scale bars: A, E–F, J = 0.5 mm; C–D, H–I, L–M = 1 mm. LEGS. Metacoxa without longer lateral bristles, a laterally extended longitudinal shelf absent. Metatibia, widest at apex, dorsal margin carinated, distal spines groups disposed at two thirds of metatibial length. First metatarsomere, ratio to dorsal metatibial spur: 1/3. Dorsal surface of tarsi glabrous, with punctures. Metatarsi, length of first protarsomere subequal to second and third combined, ventral margin serrated. Protibia with three teeth. Protarsi, length of first protarsomere subequal to second and third combined, second protarsomere narrow, claws symmetrical, inner protarsal claw bifid, apex of basal tooth of inner protarsal claw acute. AEDEAGUS. Fig. 2E–F .