Arsipoda transversa Samuelson & Biondi 2016, sp. nov.
Creators: name: Samuelson, Allan
name: Biondi, Maurizio
Publisher: name: Zenodo
Year: 2016
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Chrysomelidae
Arsipoda
Arsipoda transversa

description: Arsipoda transversa sp. nov.
urn:lsid:zoobank.org:act: 1B5665C9-3AE0-4644-8427-A4C3E997B4BD
Figs 2I, 5D, 10A, 11P, 15A
Diagnosis
Arsipoda transversa sp. nov. shares a thickset, ovoid body with A. atra sp. nov., A. evax and A. povilaensis sp. nov. (Figs 1B, F, 2D, I). It can be distinguished by the more transverse and more convex pronotum, and the generally reddish integuments, sometimes with darker head and pronotum (A. atra sp. nov. is black, A. evax is black and metallic, and A. povilaensis sp. nov. is yellowish). Genitalia are also clearly distinguishable (Figs 8C, G, 9E, 10A, 11B, F, L, P).
Etymology
The name is a Latinized adjective referring to the distinctively transverse pronotum of the species.
Type material
Holotype
NEW CALEDONIA: ♂, Mt Koghi, 400–600 m, [-22.17833 166.50667], Feb. 1973, N.L.H. Krauss leg. (BPBM).
Paratypes
NEW CALEDONIA: 3 ♂♂, 1 ♀, same data as the holotype (BPBM).
Description of the holotype (♂)
Body thickset, moderately convex (Fig. 2I); LB = 2.23 mm; maximum pronotal width at base (WP = 0.94 mm); maximum elytral width at basal third (WE = 1.17 mm). Dorsum light brown, non-metallic. Frons and vertex very finely microreticulate and sparsely punctate; head grooves weakly impressed, not continued to postantennal region; genae and frontal carina short; antennae slightly longer than ½ body length (LAN = 1.30 mm; LAN/LB = 0.58), basally yellow, gradually and slightly darker toward apex; LA:100:82:54:73:82:91:100:91:91:91:136.
Pronotum trapezoidal, clearly transverse (LP 0.50 mm; WP/LP = 1.88), laterally straight (Fig. 5D); anterior angles distinctly prominent; antebasal transverse sulcus shallow, slightly sinuate, with visible lateral fovea; pronotal surface finely microreticulate, with very small and dense punctuation. Elytra moderately elongate (LE = 1.76 mm; WE/LE = 0.66), laterally clearly arcuate; punctuation quite small, but distinctly larger than on pronotum; interstriae flat, very finely microreticulate. Anterior and middle legs and hind tarsi yellow, hind femora and tibiae light brown; first pro- and mesotarsomeres moderately dilated; adhesive setae present on ventral side of first pro-, meso- and, partially, metatarsomeres. Venter light brown; last abdominal ventrite laterally clearly incised, without special preapical impressions. Median lobe of aedeagus (LAED = 0.92 mm; LE/LAED = 1.91) (Fig. 10A) in ventral view laterally parallel at basal half, then slightly tapered; apex triangular with rounded tip; ventral sulcus complete, wide and deep for most of its length; in lateral view median lobe bent at basal third, then straight; dorsal ligula from half length to apical part of median lobe of aedeagus, narrow.
Biometry
Male (n = 3; range): 1.54 Ĺ LE Ĺ 1.76 mm; 1.02 Ĺ WE Ĺ 1.17 mm; 0.42 Ĺ LP Ĺ 0.50 mm; 0.78 Ĺ WP Ĺ 0.94 mm; 1.20 Ĺ LAN Ĺ 1.30 mm; 0.87 Ĺ LAED Ĺ 0.92 mm; 1.95 Ĺ LB Ĺ 2.23 mm; 3.52 Ĺ LE/LP Ĺ 3.67; 1.24 Ĺ WE/WP Ĺ 1.31; 1.83 Ĺ WP/LP Ĺ 1.88; 0.65 Ĺ WE/LE Ĺ 0.66; 0.58 Ĺ LAN/LB Ĺ 0.62; 1.76 Ĺ LE/LAED Ĺ 1.91.
Female (n = 1): LE = 1.84 mm; WE = 1.24 mm; LP = 0.52 mm; WP = 0.96 mm; LAN = 1.22 mm; LSPc = 0.18 mm; LB = 2.35 mm; LE/LP = 3.54; WE/WP = 1.29; WP/LP = 1.85; WE/LE = 0.67; LAN/ LB = 0.52; LE/LSPc = 10.00.
Paratypes very similar in shape sculpture, and color to the holotype. One specimen with darker head and pronotum. Spermatheca (Fig. 11P) with pear-shaped basal part; collum about twice as long as apical part, thickset, clearly tapered toward apical part; ductus thickset, apically inserted (distal part missing).
Distribution
Endemic to Mt Koghi, Southern Grande Terre (Fig. 15A).
Ecological notes
No information is available about habitat and host plants. Pollen found in the gut of some specimens.
description: Published as part of Samuelson, Allan & Biondi, Maurizio, 2016, Taxonomic revision of the genus Arsipoda Erichson, 1842 (Coleoptera, Chrysomelidae) in New Caledonia, pp. 1-61 in European Journal of Taxonomy 230 on pages 46-48, DOI: 10.5852/ejt.2016.230, http://zenodo.org/record/3840408