Arsipoda rutai 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 rutai

description: Arsipoda rutai sp. nov.
urn:lsid:zoobank.org:act: E0C9977F-07C0-44C7-9CF0-1CAE88FCB6A4
Figs 2G, 5C, 9H, 11N, 14A
Diagnosis
Arsipoda rutai sp. nov. can be easily identified by the very dark color with greenish metallic luster, and rather large, strongly impressed pronotal punctuation. Species with similar strong punctuation (A. isola and A. punctata sp. nov.) are of a different color: light brown with evident bronze luster (A. isola), and yellowish, slightly metallic (A. punctata sp. nov.); moreover, the pronotal punctuation is unevenly sized in A. isola (Fig. 4D). Genitalia are also clearly different (Figs 9A, F, H, 11I, N).
Etymology
Male patronym. Named after Dr. Rafal Ruta (University of Wroclaw, Poland), one of its collectors.
Type material
Holotype
NEW CALEDONIA (N): ♂, Poro (6 km SSE), -21.34795 165.69385, 620 m, plateau above mine, forest, 30 Nov. 2008, M. Wanat leg. (MNHN).
Paratypes
NEW CALEDONIA: 1 ♀, same data as the holotype (MNHW); 1 ♀, Poro Plateau, - 21.3483165.6932, 620 m, forest, night, 28 Nov. 2010, M. Wanat and R. Ruta leg. (MNHW); 1 ♂, Humboldt (S track), -21.90517 166.35621, 800–950 m, maquis, beating along track to Col du Vulcain, 9 Nov. 2008, M. Wanat leg. (MNHW); 1 ♂, Dzumac Mts, 22°01.9' S 166°28.0' E, 900 m, netting, 28 Dec. 2006, R. Dobosz leg. (USMB); 1 ♂, ditto, road from jct to old mine (km 1–2), -22.01431 166.45596, 850 m, 29 Oct. 2008, M. Wanat leg. (MNHW); 2 ♂♂, 3 ♀♀, ditto (Mt Ouin road junction), - 22°01.9' S 166°28.0' E, 900 m, 28 Dec. 2006, M. Wanat and R. Dobosz leg. (MNHW); 1 ♂, 2 ♀♀, Dzumac Road, S of Mts Couvélé rd jct [= road junction], -22.06913 166.44666, 870– 670 m, beating, 31 Oct. 2008, M. Wanat leg. (MNHW); 1 ♂, 1 ♀, ditto (Mt Ouin to Mts Couvélé road junctions), 22°04.1' S 166°26.8' E, 800–900 m, 29 Dec. 2006, M. Wanat leg. (MNHW); 1 ♂, ditto, km 0–1 E of Ouin rd jct [= road junction], -22.03340 166.47480, 800–900 m, to refuge, maquis, 6 Dec. 2010, M. Wanat and R. Ruta leg. (MNHW); 1 ♂, 1 ♀, Mt Mou, [-22.05937 166.34926], 1220 m, 3 Feb. 1963, J. L. Gressitt leg. (BPBM); 1 ♀, ditto, [- 22.06150166.35377], 1000–1200 m, 9 Mar. 1972 (BPBM); 1 ♀, ditto, [- 22.06958166.34952], 500– 800 m, 2 Nov. 1978, J.S. Dugdale leg. (NZAC); 1 ♂, Mt Koghis, [-22.17236 166.51129], 600 m, 12 Oct. 1978, G. Kuschel leg. (NZAC).
Description of the holotype (♂)
Body moderately elongate and convex (Fig. 2G); LB = 1.97 mm; maximum pronotal width at base (WP = 0.63 mm); maximum elytral width at basal third (WE = 0.88 mm). Dorsum black, with green metallic reflection. Frons and vertex microreticulate and clearly punctate; head grooves moderately impressed, not continued to postantennal region; genae and frontal carina short; antennae distinctly longer than ½ body length (LAN = 1.33 mm; LAN/LB= 0.67), basally brown, gradually darker towards apex; LA: 100:70:60:95:100:100:100:110:100:95:140. Pronotum trapezoidal, slightly transverse (LP = 0.43 mm; WP/LP = 1.47), laterally straight (Fig. 5C); anterior angles weakly prominent; antebasal transverse sulcus moderately impressed, slightly sinuate, without clearly distinguishable lateral fovea; pronotal surface microreticulate, with dense punctures differently sized. Elytra moderately elongate (LE = 1.35 mm; WE/LE = 0.65), laterally distinctly arcuate; punctuation large and strongly impressed; interstriae microreticulate and clearly micropunctuate. Legs yellowish with black femora; first pro- and mesotarsomeres weakly dilated; adhesive setae present on ventral side of first pro-, meso- and, partially, metatarsomeres. Venter brown; last abdominal ventrite laterally briefly incised, with clear median dimple. Median lobe of aedeagus (LAED = 0.79 mm; LE/LAED = 1.70) (Fig. 9H) in ventral view slightly tapered toward apex; apical part triangular, with rounded apex; ventral groove narrow, with thin median carina; in lateral view, median lobe slightly curved, especially on dorsum, with straight apex; dorsal ligula from half length to preapical part of median lobe of aedeagus, moderately wide, laterally parallel, apically slightly narrower.
Biometry
Male (n = 10; mean and standard deviation; range): LE = 1.44 ± 0.08 mm (1.35 Ĺ LE Ĺ 1.58 mm); WE = 0.93 ± 0.06 mm (0.85 Ĺ WE Ĺ 1.03 mm); LP = 0.42 ± 0.03 mm (0.40 Ĺ LP Ĺ 0.48 mm); WP = 0.66 ± 0.05 mm (0.60 Ĺ WP Ĺ 0.74 mm); LAN = 1.40 ± 0.09 mm (1.30 Ĺ LAN Ĺ 1.58 mm); LAED = 0.83 ± 0.03 mm (0.79 Ĺ LAED Ĺ 0.89 mm); LB = 2.06 ± 0.13 mm (1.94 Ĺ LB Ĺ 2.28 mm); LE/LP = 3.41 ± 0.13 (3.18 Ĺ LE/LP Ĺ 3.60); WE/WP = 1.41 ± 0.04 (1.38 Ĺ WE/WP Ĺ 1.50); WP/LP = 1.55 ± 0.05 (1.47 Ĺ WP/ LP Ĺ 1.63); WE/LE = 0.64 ± 0.01 (0.63 Ĺ WE/LE Ĺ 0.66); LAN/LB = 0.68 ± 0.01 (0.66 Ĺ LAN/LB Ĺ 0.70); LE/LAED = 1.74 ± 0.05 (1.67 Ĺ LE/LAED Ĺ 1.81).
Female (n = 8; mean and standard deviation; range): LE = 1.58 ± 0.08 mm (1.50 Ĺ LE Ĺ 1.75 mm); WE = 1.01 ± 0.06 mm (0.95 Ĺ WE Ĺ 1.08 mm); LP = 0.44 ± 0.02 mm (0.40 Ĺ LP Ĺ 0.45 mm); WP = 0.70 ± 0.05 mm (0.64 Ĺ WP Ĺ 0.79 mm); LAN = 1.26 ± 0.04 mm (1.18 Ĺ LAN Ĺ 1.33 mm); LSPc = 0.14 ± 0.01 mm (0.12 Ĺ LSPc Ĺ 0.15 mm); LB = 2.23 ± 0.12 mm (2.13 Ĺ LB Ĺ 2.50 mm); LE/LP = 3.63 ± 0.11 (3.39 Ĺ LE/LP Ĺ 3.75); WE/WP = 1.45 ± 0.02 (1.43 Ĺ WE/WP Ĺ 1.49); WP/LP = 1.59 ± 0.06 (1.50 Ĺ WP/ LP Ĺ 1.66); WE/LE = 0.64 ± 0.01 (0.63 Ĺ WE/LE Ĺ 0.66); LAN/LB = 0.57 ± 0.02 (0.52 Ĺ LAN/LB Ĺ 0.60); LE/LSPc = 11.32 ± 0.78 (10.30 Ĺ LE/LSPc Ĺ 12.50).
Paratypes very similar in shape, sculpture and color similar to the holotype. Antennae shorter in females. Spermatheca (Fig. 11N) with globose basal part; apical part short; collum about twice as long as apical part; appendix very elongate; ductus moderately elongate, preapically inserted on dorsal side, with proximal part running distant to spermathecal capsule.
Distribution
Central and mostly Southern Grande Terre (Fig. 14A).
Ecological notes
Collected in forest and maquis between 600 and 1200 m a.s.l. No information is available about 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 39-41, DOI: 10.5852/ejt.2016.230, http://zenodo.org/record/3840408