Astaena fusagona Saylor, 1946

Pacheco, Thaynara L., Monné, Marcela L., Vaz-De, Fernando Z. & Ahrens, Dirk, 2021, Revision of type specimens of Astaena (Coleoptera: Scarabaeidae: Melolonthinae: Sericini) described by L. W. Saylor, European Journal of Taxonomy 750 (750), pp. 94-123 : 103-104

Astaena fusagona Saylor, 1946

Figs 2J–M , 7B

Astaena fusagona Saylor, 1946: 221 .

Astaena fusagona – Frey 1973: 329 (identification key). — Evans 2003: 23 (checklist). — Evans & Smith 2005: 8 (checklist); 2007: 8 (checklist); 2009: 8 (checklist).

Type material examined

Holotype COLOMBIA • ♀; “Fusago x Colom / Apolinar-Maria / L.W. Saylor Collection / California Academy of Sciences Type nº 7912 / Holotype Astaena fusagona L.W. Saylor ”; CAS.

Holotype redescription

MEASUREMENTS. Length: 13 mm. Width: 6 mm.

HEAD. Blackish-brown, surface with upright setae. Labroclypeus, shape of anterior margin weakly sinuated medially, posteriorly with dense punctation. Ocular canthus with terminal setae, ratio to eye: 1/3. Antennae with eight antennomeres; antennal club with three antennomeres; ratio antennal club/remaining antennomeres: 1/1; ratio third vs fourth antennomere: 1/4; fourth antennomere, lateral projection absent; ratio fifth vs fourth antennomere: 1/5.

PRONOTUM AND ELYTRA. Surface of pronotum and elytra with upright setae. Pronotum unicolored, blackish-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, posterolateral angle dorso-ventrally not flattened, punctation on disc dense, setae of lateral margin dense, median longitudinal excavation absent. Scutellum, punctures medially present. Elytra unicolored, reddishbrown, surface opaque, microsculpture absent, punctation on intervals present and dense, diameter of strial and interval punctation equal.

ABDOMEN. Lateral carina present. Second visible ventrite with row of setae in medial region. Apical visible ventrite without suture to apical tergite.

LEGS. Metacoxa without longer lateral bristles, a laterally extended longitudinal shelf present. Metatibia, widest at apex, dorsal margin carinated, with group of spines positioned at two thirds of metatibial length. First metatarsomere, ratio to dorsal metatibial spur: 1/3. Dorsal surface of tarsi glabrous. Metatarsi, length of first protarsomere smaller than second and third combined, ventral margin serrated and setose. 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.

Male

Unknown.

Figures

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.

Fig. 7. Distribution of type localities of the South American Sericini species described by Saylor. A. Astaena abaca Saylor, 1946, A. biciliata Saylor, 1946, A. bogotana Saylor, 1946, A. excisipes Saylor, 1947, A. explaniceps Saylor, 1947, A. incachaca Saylor, 1946, A. maqueta Saylor, 1947, and A. nigrona Saylor, 1947. B. A. fusagona Saylor, 1946, A. pygidia Saylor, 1946, A. rugithorax Saylor, 1946, A. salta Saylor, 1946, A. yungasa Saylor, 1946, and A. zyrota Saylor, 1946. C. Sayloria abcora (Saylor, 1946) comb. nov., S. bicoloripes (Saylor, 1946) comb. nov., and S. pottsi (Saylor, 1946) comb. nov..