Arsipoda atra, Samuelson & Biondi, 2016

Samuelson, Allan & Biondi, Maurizio, 2016, Taxonomic revision of the genus Arsipoda Erichson, 1842 (Coleoptera, Chrysomelidae) in New Caledonia, European Journal of Taxonomy 230, pp. 1-61 : 8-10

publication ID	https://doi.org/ 10.5852/ejt.2016.230
publication LSID	lsid:zoobank.org:pub:80B8573D-AEF3-4E98-A9C8-BF652ED4124E
DOI	https://doi.org/10.5281/zenodo.3853579
persistent identifier	https://treatment.plazi.org/id/7BDC873B-2A3E-453B-8DF8-CD3CB0806018
taxon LSID	lsid:zoobank.org:act:7BDC873B-2A3E-453B-8DF8-CD3CB0806018
treatment provided by	Valdenar
scientific name	Arsipoda atra
status	sp. nov.

Treatment

Arsipoda atra sp. nov.

urn:lsid:zoobank.org:act:7BDC873B-2A3E-453B-8DF8-CD3CB0806018

Figs 1B View Fig , 6A View Fig , 8C View Fig , 11B View Fig , 14B View Fig

Diagnosis

Arsipoda atra sp. nov. shares a thickset and ovoid body with A. evax , A. povilaensis sp. nov. and A. transversa sp. nov. ( Figs 1B, F View Fig , 2D, I View Fig ). However, the new species can easily be distinguished from other species by its black, non-metallic integuments, and wide and flat elytral interstriae. Genitalia are also highly diagnostic ( Figs 8C, G View Fig , 9E View Fig , 10A View Fig , 11B, F, L, P View Fig ).

Etymology

The specific epithet is a Latin adjective that means black, dark.

Type material

Holotype

NEW CALEDONIA (N): ³, Aoupinié , near Goipin rd jct [= road junction], -21.1739 165.3116, 700– 800 m, 20 Nov. 2010, M. Wanat & R. Ruta leg. ( MNHN). GoogleMaps

Paratypes

NEW CALEDONIA: 1 ♀, same data as the holotype ( MNHW); 1 ♀, Aoupinié, -21.18151 165.30048, 790–830 m, 27 Nov. 2010, M. Wanat leg. ( MNHW).

Description of the holotype (³)

Body thickset, moderately convex ( Fig. 1B View Fig ); LB = 2.25 mm; maximum pronotal width at base (WP = 0.90 mm); maximum elytral width at basal third (WE = 1.18 mm). Dorsum blackish, non- metallic, paler on elytral disc and anterior part of pronotum. Frons and vertex finely microreticulate and finely punctate; head grooves moderately impressed, continued to postantennal region; genae and frontal carina short; antennae slightlty longer than ½ body length ( LAN = 1.35 mm; LAN/ LB = 0.60), yellowish, gradually darker towards apex; LA: 100:77:64:64:91:82:91:91:91:91:132. Pronotum trapezoidal, distinctly transverse (LP = 0.50 mm; WP/LP = 1.80), laterally straight; anterior angles distinctly prominent; antebasal transverse sulcus weakly impressed, weakly sinuate, without clearly distinguishable lateral fovea; pronotal surface microreticulate, opaque, with small, dense punctures, distinctly impressed. Elytra slightly elongate (LE = 1.73 mm; WE/LE = 0.68), laterally clearly arcuate ( Fig. 6A View Fig ); punctuation slightly larger than on pronotum; surface finely microreticulate; interstriae regularly punctulate. Anterior and middle legs yellowish; hind legs brown; first pro- and mesotarsomeres moderately dilated; first metatarsomere in male distally slightly expanded on inner side; adhesive setae present on ventral side of first pro-, meso- and, partially, metatarsomeres. Venter brown; last abdominal ventrite laterally clearly incised, without special preapical impressions. Median lobe of aedeagus (LAED = 1.03 mm; LE/LAED = 1.67) ( Fig. 8C View Fig ) in ventral view laterally parallel, slightly narrower at basal ²⁄5s and toward apex; apex flat, elongate, with rounded margin; ventral surface with shallow median groove and two thin lateral carinae; in lateral view, median lobe strongly bent at basal fourth, with sinuate apical part; dorsal ligula quite short – from apical ²⁄5s to pre-apical part of aedeagus –, thin, tapered towards apex.

Biometry

Male (n = 1): LE = 1.73 mm; WE = 1.18 mm; LP = 0.50 mm; WP = 0.90 mm; LAN = 1.35 mm; LAED = 1.03 mm; LB = 2.25 mm; LE/LP = 3.45; WE/WP = 1.31; WP/LP = 1.80; WE/LE = 0.68; LAN/LB = 0.60; LE/LAED = 1.67.

Female (n = 2): LE = 1.95, 1.73 mm; WE = 1.33, 1.20 mm; LP = 0.58, 0.50 mm; WP = 1.01, 0.89 mm; LAN = 1.35, 1.25 mm; LSPc = 0.16, 0.16 mm; LB = 2.59, 2.25 mm; LE/LP = 3.39, 3.45; WE/WP = 1.31, 1.35; WP/LP = 1.76, 1.78; WE/LE = 0.68, 0.70; LAN/LB = 0.52, 0.56; LE/LSPc = 12.50, 10.78.

Paratypes (females) very similar in shape and sculpture to the holotype. Dorsum evenly black. Antennae slightly shorter. Spermatheca ( Fig. 11B View Fig ) with small, subrounded basal part; collum thickened, tapered towards apical part, elongate; ductus thin, elongate, preapically inserted on dorsal side, single-coiled.

Distribution

Endemic to the Aoupinié area, Central Grande Terre ( Fig. 14B View Fig ).

Ecological notes

No ecological notes are available for this species, but collecting localities are located in a dense, evergreen humid forest area between 700 and 830 m a.s.l. Pollen found in the gut of some specimens.