Sayloria bicoloripes ( Saylor, 1946 ) Pacheco & Monné & Vaz-De & Ahrens, 2021

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 : 114-116

Sayloria bicoloripes ( Saylor, 1946) comb. nov.

Figs 5K–O , 7C

Astaena bicoloripes Saylor, 1946: 226 .

Astaena postnodata Frey, 1973: 339 syn. nov.

Symmela (Sayloria) bicoloripes – Frey 1973: 324 (new subgenus, identification key).

Symmela bicoloripes – Evans 2003: 47 (checklist). — Evans & Smith 2005: 29 (checklist); 2007: 30 (checklist); 2009: 30 (checklist).

Astaena postnodata – Evans 2003: 27 (checklist). — Evans & Smith 2005: 12 (checklist); 2007: 12 (checklist); 2009: 12 (checklist).

Type material examined

Holotype ( Astaena bicoloripes ) PERU • ♀; “M. Sani Beni Lima Peru. 35 / L.W. Saylor Collection / California Academy of Sciences Type nº 7908 / Holotype Astaena bicoloripes L.W. Saylor / Symmela bicoloripes Saylor det. G. Frey ”; CAS.

Paratype ( Astaena bicoloripes ) PERU • 1 ♂; “M. Sani Beni Lima Peru. 35 / L.W. Saylor Collection / Paratype Astaena bicoloripes L.W. Saylor / Astaena bicoloripes Saylor / CASENT 8438129”; CAS .

Holotype ( Astaena postnodata ) PERU • ♂; “ Mt. Alegre , Rio Pachitea O. Peru G. Tessmann / Type Astaena postnodata G. Frey 1973 ”; ZMHB.

Paratypes ( Astaena postnodata ) PERU • 4 ♀♀; “ Mt. Alegre , Rio Pachitea O. Peru G. Tessmann / Paratype Astaena postnodata G. Frey 1973 ”; ZMHB .

Additional material examined

PERU • 1 ♂; “Dept. Cusco, PERU Santa Isabel Cosnipata Valley Dec 5 1951 Felix Woytkowski / H. & A. Howden collection Ottawa Canada”; CMNC • 6 ♂♂, 5 ♀♀; “ Mt. Alegro , Rio Pachitea o. Peru G. Tessmann ”; ZFMK, ZMHB, NHMB .

Holotype redescription

MEASUREMENTS. Length: 6.5 mm. Width: 4 mm.

HEAD. Black, surface with upright setae. Labroclypeus convex, shape of anterior margin weakly sinuated medially, posteriorly with dense punctation. Ocular canthus with terminal setae, ratio to eye: 1/3. Eyes, ratio diameter/interocular width: 0.44. Antennae with nine antennomeres; antennal club with three antennomeres; ratio antennal club/remaining antennomeres: 1/1; ratio third vs fourth antennomere: 1/2; fourth antennomere, lateral projection absent; ratio fifth vs fourth antennomere: 1.2/1.

PRONOTUM AND ELYTRA. Surface of pronotum and elytra without setae. Pronotum unicolored, brownishorange, widest at base, anterior marginal line present, posterior marginal line absent, lateral margin strongly convex and smooth (not serrate), antero-lateral angle dorso-ventrally not flattened, posterolateral angle dorso-ventrally not flattened, punctation on disc dense, setae of lateral margin sparse, median longitudinal excavation present. Scutellum, punctures medially present. Elytra bicolored, 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.

LEGS. Ratio of length of metepisternum/metacoxa: 1/0.90. Metacoxa without longer lateral bristles, a laterally extended longitudinal shelf present. Metatibia, widest at apex, ratio of width/length: 1/3, dorsal margin not carinated. ventral margin serrated, distal spines groups disposed at two thirds of metatibial length. First metatarsomere, ratio to dorsal metatibial spur: 1/3. Dorsal surface of tarsi glabrous, without punctures. Metatarsi, length of first protarsomere subequal to 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 asymmetrical, inner protarsal claw bifid, apex of basal tooth of inner protarsal claw truncate.

AEDEAGUS. Fig. 5K–L .

Remarks

Also, in this case, the holotype was a female specimen; Saylor mentioned in the original description that the holotype was a male.

Figures

Fig. 5. A–E. Astaena yungasa Saylor, 1946, holotype, ♂ (Type No. 7920; CAS). – F–J. A. zyrota Saylor, 1946, holotype, ♂ (Type No. 7921; CAS). – K–L. Sayloria bicoloripes (Saylor, 1946), paratype, ♂ (CAS). – M–O. S. bicoloripes, holotype, ♀ (Type No. 7908; CAS). A, F, L. Aedeagus, lateral view. B, G, K. Parameres, dorsal view. C, H, M. Labels. D, I, N. Habitus, dorsal view. E, J, O. Habitus, lateral view. Scale bars: A–B, F–G, K–L = 0.5 mm; D–E, I–J, N–O = 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..