Arsipoda povilaensis, 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 : 33-36

Arsipoda povilaensis sp. nov.

urn:lsid:zoobank.org:act:6E5BDE56-5D9F-4E95-AC92-7CA05D7

Figs 2D , 5A , 9E , 11L , 15B

Diagnosis

Arsipoda povilaensis sp. nov. shares a thickset, ovoid body with A. atra sp. nov., A. evax and A. transversa sp. nov. ( Figs 1B, F , 2D, I ). It can be distinguished by the yellowish integuments ( A. evax is black and metallic, A. atra sp. nov. is black, and A. transversa sp. nov. is reddish); compared to A. transversa sp. nov., with which it can be more easily confused, it also displays a less transverse and less convex pronotum ( Fig. 5A, D ). Genitalia are also clearly distinguishable ( Figs 8C, G , 9E , 10A , 11B, F, L, P ).

Etymology

The specific name is a Latinized adjective formed after Povila, the type locality where the species has been collected.

Type material

Holotype

NEW CALEDONIA (N): ♂, Picd’Amoa ( Povila ), - 20.95020165.29320, 400–450 m, rainforest, 17 Nov. 2010, R. Ruta and M. Wanat leg. ( MNHN).

Paratypes

NEW CALEDONIA: 1 ♂, 3 ♀♀, same data of the holotype ( MNHW); 1 ♂, Pic d’Amoa ( Povila ), -20.9510 165.29120, 400 m, lower rainforest, 18 Nov. 2010, M. Wanat and R. Ruta leg. ( MNHW); 3 ♀♀, ditto, end 0.5 km of road , -20.95530 165.29100, 450 m, 18 Nov. 2010 ( MNHW); 1 ♀, ditto, -20.95659 165.29103, 23 Nov. 2010, M. Wanat leg. ( MNHW); 1 ♀, Pic d’Amoa, 20°57.2' S 165°17.5' E, 360 m, forest, at light, 14 Jan. 2007, R. Dobosz and M. Wanat leg. ( USMB).

Description of the holotype (♂)

Body thickset, slightly convex ( Fig. 2D ); LB = 2.38 mm; maximum pronotal width at base (WP = 0.85 mm); maximum elytral width at basal third (WE = 1.18 mm). Dorsum yellowish, not metallic. Frons and vertex microreticulate and punctate; head grooves weakly impressed, not continued to postantennal region; genae and frontal carina short; antennae slightly longer than ½ body length (LAN = 1.28 mm; LAN/LB= 0.54), basally yellow, gradually and slightly darker towards apex; LA:100:6 7:56:56:78:78:78:78:89:78:122. Pronotum trapezoidal, clearly transverse (LP = 0.51 mm; WP/LP = 1.66), laterally weakly convex ( Fig. 5A ); anterior angles distinctly prominent; antebasal transverse sulcus weakly impressed, slightly sinuate, without clearly distinguishable lateral fovea; pronotal surface microreticulate, with small and dense punctuation, similar to that on head. Elytra slightly elongate (LE = 1.73 mm; WE/ LE = 0.68), laterally clearly arcuate; punctuation quite small, but distinctly larger than on pronotum; interstriae very finely microreticulate and micropunctuate. Legs yellow; first pro- and mesotarsomeres distinctly 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 = 0.94 mm; LE/LAED = 1.83) ( Fig. 9E ) in ventral view laterally parallel, slightly narrower in pre-apical part; apex rounded; in lateral view median lobe curved at basal third, then straight; apex sinuate, ventrally oriented; dorsal ligula from half length to apical part of median lobe of aedeagus, narrow.

Biometry

Male (n = 3; range): 1.60 Ĺ LE Ĺ 1.73 mm; 1.05 Ĺ WE Ĺ 1.08 mm; 0.48 Ĺ LP Ĺ 0.51 mm; 0.81 Ĺ WP Ĺ 0.85 mm; 1.25 Ĺ LAN Ĺ 1.28 mm; 0.94 Ĺ LAED Ĺ 0.94 mm; 2.16 Ĺ LB Ĺ 2.38 mm; 3.37 Ĺ LE/LP Ĺ 3.42; 1.26 Ĺ WE/WP Ĺ 1.38; 1.66 Ĺ WP/LP Ĺ 1.79; 0.66 Ĺ WE/LE Ĺ 0.68; 0.54 Ĺ LAN/LB Ĺ 0.59; 1.69 Ĺ LE/ LAED Ĺ 1.83.

Female (n = 8; mean and standard deviation; range): LE = 1.68 ± 0.04 mm (1.63 Ĺ LE Ĺ 1.74 mm); WE = 1.10 ± 0.04 mm (1.03 Ĺ WE Ĺ 1.15 mm); LP = 0.48 ± 0.01 mm (0.48 Ĺ LP Ĺ 0.51 mm); WP = 0.83 ± 0.03 mm (0.80 Ĺ WP Ĺ 0.88 mm); LAN = 1.13 ± 0.04 mm (1.10 Ĺ LAN Ĺ 1.18 mm); LSPc = 0.17 ± 0.01 mm (0.16 Ĺ LSPc Ĺ 0.18 mm); LB = 2.24 ± 0.08 mm (2.16 Ĺ LB Ĺ 2.34 mm); LE/LP = 3.46 ± 0.10 (3.27 Ĺ LE/LP Ĺ 3.58); WE/WP = 1.32 ± 0.04 (1.29 Ĺ WE/WP Ĺ 1.39); WP/LP = 1.72 ± 0.04 (1.66 Ĺ WP/ LP Ĺ 1.76); WE/LE = 0.66 ± 0.02 (0.62 Ĺ WE/LE Ĺ 0.68); LAN/LB = 0.51 ± 0.01 (0.49 Ĺ LAN/LB Ĺ 0.52); LE/LSPc = 10.06 ± 0.46 (9.38 Ĺ LE/LSPc Ĺ 10.86).

Paratypes very similar in shape and sculpture to the holotype. Some specimens slightly darker on elytra. Spermatheca ( Fig. 11L ) with rounded basal part; collum length about twice as long as apical part; ductus thickset, elongate, apically inserted.

Distribution

Endemic to the Pic d’Amoa, Central Grande Terre ( Fig. 15B ).

Ecological notes

Collected in rainforest between 360 and 450 m a.s.l. No information about host plants is available.

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. 15. Distributions of New Caledonian Arsipoda. A. Arsipoda elongata sp. nov., A. gressitti sp. nov., A. longifrons sp. nov., A. shirleyae Samuelson, 1973, A. transversa sp. nov. and A. yiambiae Samuelson, 1973. B. A. doboszi sp. nov., A. povilaensis sp. nov., A. punctata sp. nov., A. wanati sp. nov. and A. gomezzuritai sp. nov.

Fig. 1. Habitus. A. Arsipoda agalma Samuelson, 1973, Mt Panié. B. A. atra sp. nov, Aoupinié. C. A. communis sp. nov, Mt Do. D. A. doboszi sp. nov, Haute Rivière Bleue. E. A. elongata sp. nov, Mt Humboldt. F. A. evax Samuelson, 1973, Koghi Mts. G. A. geographica Gómez-Zurita, 2010, Haute Rivière Bleue. H. A. gressitti sp. nov., Farino. I. A. isola Samuelson, 1973, Bois du Sud.

Fig. 8. Median lobe of aedeagus in lateral (l), ventral (v) and dorsal (d) view. A–B. Arsipoda agalma Samuelson, 1973. A. Mt Paniè. B. Col d’Amieu. C. A. atra sp. nov., Aoupinié. D. A. communis sp. nov., Mt Do. E. A. doboszi sp. nov., Haute Rivière Bleue. F. A. elongata sp. nov., Mt Humboldt. G. A. evax Samuelson, 1973, Koghi Mts. H. A. geographica Gómez-Zurita, 2010, Haute Rivière Bleue. I. A. gressitti sp. nov., Farino.

Fig. 10. Median lobe of aedeagus in lateral (l), ventral (v) and dorsal (d) view. A. Arsipoda transversa sp. nov., Mt Koghi. B. A. wanati sp. nov., Mt Humboldt. C. A. yiambiae Samuelson, 1973, Yiambi. D. A. gomezzuritai sp. nov., Dzumac Mts. E. Nomenclature. Abbreviations: amt = apical median tooth; apr = apical process; bp = basal part; dl = dorsal ligula; vs = ventral sulcus.