Arsipoda rutai, 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 : 39-41

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.

Figures

Fig. 2. Habitus. A. Arsipoda longifrons sp. nov, Humboldt S track. B. A. montana sp. nov, Mt Humboldt. C. A. paniensis sp. nov, Mt Panié. D. A. povilaensis sp. nov, Pic d’Amoa. E. A. punctata sp. nov., Mueo. F. A. rostrata Gómez-Zurita, 2010, Koghi Mts. G. A. rutai sp. nov, Poro Plateau. H. A. shirleyae Samuelson, 1973, S Humboldt. I. A. transversa sp. nov., Mt Koghi.

Fig. 5. Head and pronotum. A. Arsipoda povilaensis sp. nov, Pic d’Amoa. B. A. punctata sp. nov., Mueo. C. A. rutai sp. nov., Dzumac Mts. D. A. transversa sp. nov., Mt. Koghi. E. A. wanati sp. nov., Mt Humboldt. F. A. yiambiae Samuelson, 1973, Yiambi.

Fig. 9. Median lobe of aedeagus in lateral (l), ventral (v) and dorsal (d) view. A. Arsipoda isola Samuelson, 1973, Bois du Sud. B. A. longifrons sp. nov., Humboldt S track. C. A. montana sp. nov., Mt Humboldt. D. A. paniensis sp. nov., Mt Panié. E. A. povilaensis sp. nov., Pic d’Amoa, Povila. F. A. punctata sp. nov., Mueo. G. A. rostrata Gómez-Zurita, 2010, Koghi Mts. H. A. rutai sp. nov. Poro Plateau. I. A. shirleyae Samuelson, 1973, S Humboldt.

Fig. 11. Female genitalia. A–S. Spermatheca. A. Arsipoda agalma Samuelson, 1973, N of Pic Vincent. B. A. atra sp. nov., Aoupinié. C. A. communis sp. nov., Dzumac Mts. D. A. doboszi sp. nov., Mt Do. E. A.elongata sp. nov., Mt Humboldt. F. A. evax Samuelson, 1973, Chagrin. G. A. geographica Gómez- Zurita, 2010, Mt Humboldt. H. A. gressitti sp. nov., Farino. I. A. isola Samuelson, 1973, Bois du Sud. J. A. longifrons sp. nov., Humboldt S track. K. A. paniensis sp. nov., Mt Panie. L. A. povilaensis sp. nov., Pic d’Amoa, Povila.M. A. rostrata Gómez-Zurita, 2010, Dzumac Road.N. A. rutai sp. nov.Dzumac Road. O. A. shirleyae Samuelson, 1973, Haute Rivière Bleue. P. A. transversa sp. nov., Mt Koghi. Q. A. wanati sp. nov., Mt Humboldt. R. A. yiambiae Samuelson, 1973, Yiambi. S. A. gomezzuritai sp. nov., Dzumac Mts. T. Tignum (t) and vaginal palpi (vp) of A. communis sp. nov., Mt Do. Abbreviations: a = appendix; ap = apical part; bp = basal part; c = collum or neck; d = ductus; LSPc = length of spermathecal capsule; SPc = spermathecal capsule = ap + c + bp.

Fig. 14. Distributions of New Caledonian Arsipoda. A. Arsipoda agalma Samuelson, 1973, A. evax Samuelson, 1973, A. geographica Gómez-Zurita, 2010, A. isola Samuelson, 1973 and A. rutai sp. nov. B. A. atra sp. nov., A. communis sp. nov., A. montana sp. nov., A. paniensis sp. nov. and A. rostrata Gómez-Zurita, 2010.

Fig. 4. Head and pronotum. A. Arsipoda agalma Samuelson, 1973, Col d’Amieu. B. A. communis sp. nov., Dzumac Mts. C. A. doboszi sp. nov, Haute Rivière Bleue. D. A. isola Samuelson, 1973, Mont Do. E. A. montana sp. nov., Mt Humboldt. F. A. paniensis sp. nov., Mont Panié. Abbreviations: ats = antebasal transverse sulcus; fg = frontal grooves; ld = lateral dimples; pr = postantennal region.