Arsipoda evax Samuelson, 1973

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 : 17-18

Arsipoda evax Samuelson, 1973

Figs 1F , 8G , 11F , 14A

Arsipoda evax Samuelson, 1973: 128 .

Arsipoda species D – Samuelson 1989: 410.

Arsipoda sp. – Samuelson 1994: 181.

Type material examined

Holotype

NEW CALEDONIA: ♂, Thio, [-21,60682 166,21460], Mar. 1959, N.L.H. Krauss leg. ( BPBM);

Paratypes

NEW CALEDONIA: 1 ♂, 1 ♀, same data as the holotype ( BPBM); 1 ♀, Mokoue to Dothio , [-21,57642 166,13031], 150–200 m, 20–22 Mar. 1968, J.L. Gressitt leg. ( BMNH)..

New material

NEW CALEDONIA: 1 specimen, Koghi Mts, -22.18015 166.51131, 600 m (La Roussette) sifting litter, 27 Oct. 2004, M. Wanat leg. ( MNHW); 22 specimens, Chagrin (1 km N of), 20°28.6' S 164°15.6' E, 80 m, maquis, 9 Jan. 2007, M. Wanat and R. Dobosz leg. ( MNHW); 1 specimen, Baie de Port Bouquet, 21°41.4' S 166°21.6' E, 5 m, seashore forest, 2 Jan. 2007, M. Wanat and R. Dobosz leg. ( MNHW); 5 specimens, Pic d’Amoa, 20°56.1' S 165°17.7, 220–350 m, maquis, 15 Jan. 2007, M. Wanat and R. Dobosz leg. ( MNHW); 1 specimen, ditto, 160–200 m, 14 Jan. 2007 ( MNHW); 2 specimens, ditto, R. Dobosz and M. Wanat leg. ( USMB); 1 specimen, ditto (Povila), -20.93580 165.29520, 220–300 m, maquis, 19 Nov. 2010, M. Wanat and R. Ruta leg. ( MNHW); 13 specimens, 8 km SE Nakety, [-21.60889 166.01146], 400 m, on flowers of Mangifera indica L., 22 Sep. 1979, G.A. Samuelson leg. ( BPBM); 1 specimen, Col d’Amieu, [-21.61667 165.80000], 500–600 m, 28 Dec. 1976 ( BPBM); 3 specimens, Wara, [-21.26667 165.60000], 100 m, on Acacia , 6 Apr. 1981, J.L. Gressitt leg. ( BPBM).

Taxonomic notes

Arsipoda evax shares a thickset, ovoid body with A. atra sp. nov., A. povilaensis sp. nov. and A. transversa sp. nov. ( Figs 1B, F , 2D, I ). It can be easily distinguished by the smaller size and the black, metallic integuments, ( A. atra sp. nov. is black, but not metallic; A. povilaensis sp. nov. is yellowish; A. transversa sp. nov. is reddish). Genitalia are also clearly distinguishable ( Figs 8C, G , 9E , 10A , 11B, F, L, P ).

Median lobe of aedeagus ( Fig. 8G ) in ventral view laterally parallel; apex subtriangular, slightly rounded, with generally elongate median tooth; ventral surface with a shallow median depression at apical third; in lateral view median lobe clearly and regularly curved in basal ¾s and straight in apical ¼; dorsal ligula short – from apical third to apical part of median lobe of aedeagus –, wide, apically thinner. Spermatheca ( Fig. 11F ) with pyriform basal part; collum moderately elongate, about twice as long as apical part; ductus elongate, thickset, apically inserted.

Biometry

Male (n = 10; mean and standard deviation; range): LE = 1.20 ± 0.09 mm (1.10 Ĺ LE Ĺ 1.35 mm); WE = 0.86 ± 0.07 mm (0.78 Ĺ WE Ĺ 0.98 mm); LP = 0.38 ± 0.03 mm (0.34 Ĺ LP Ĺ 0.44 mm); WP = 0.64 ± 0.06 mm (0.56 Ĺ WP Ĺ 0.73 mm); LAN = 0.88 ± 0.11 mm (0.75 Ĺ LAN Ĺ 1.08 mm); LAED = 0.65 ± 0.04 mm (0.60 Ĺ LAED Ĺ 0.71 mm); LB = 1.63 ± 0.15 mm (1.44 Ĺ LB Ĺ 1.91 mm); LE/LP = 3.19 ± 0.13 (3.00 Ĺ LE/LP Ĺ 3.38); WE/WP = 1.35 ± 0.03 (1.31 Ĺ WE/WP Ĺ 1.40); WP/LP = 1.69 ± 0.06 (1.61 Ĺ WP/ LP Ĺ 1.81); WE/LE = 0.72 ± 0.02 (0.70 Ĺ WE/LE Ĺ 0.75); LAN/LB = 0.54 ± 0.04 (0.49 Ĺ LAN/LB Ĺ 0.60); LE/LAED = 1.84 ± 0.05 (1.77 Ĺ LE/LAED Ĺ 1.94).

Female (n = 10; mean and standard deviation; range): LE = 1.28 ± 0.11 mm (1.13 Ĺ LE Ĺ 1.43 mm); WE = 0.90 ± 0.10 mm (0.75 Ĺ WE Ĺ 1.05 mm); LP = 0.37 ± 0.04 mm (0.33 Ĺ LP Ĺ 0.41 mm); WP = 0.65 ± 0.05 mm (0.56 Ĺ WP Ĺ 0.73 mm); LAN = 0.86 ± 0.09 mm (0.73 Ĺ LAN Ĺ 0.98 mm); LSPc = 0.14 ± 0.02 mm (0.10 Ĺ LSPc Ĺ 0.17 mm); LB = 1.70 ± 0.14 mm (1.53 Ĺ LB Ĺ 1.84 mm); LE/LP = 3.45 ± 0.08 (3.25 Ĺ LE/LP Ĺ 3.54); WE/WP = 1.38 ± 0.05 (1.25 Ĺ WE/WP Ĺ 1.45); WP/LP = 1.75 ± 0.06 (1.63 Ĺ WP/ LP Ĺ 1.86); WE/LE = 0.70 ± 0.02 (0.65 Ĺ WE/LE Ĺ 0.74); LAN/LB = 0.51 ± 0.02 (0.47 Ĺ LAN/LB Ĺ 0.53); LE/LSPc = 9.22 ± 0.86 (8.28 Ĺ LE/LSPc Ĺ 11.06).

Distribution

Widespread in Northern, Central and Southern Grande Terre ( Fig. 14A ).

Ecological notes

Collected in seashore forest and maquis from the coast to 600 m a.s.l. Found on flowers of Mangifera indica (Anacardiaceae) , Acacia sp. ( Fabaceae ), Styphelia sp. ( Ericaceae ), Grevillea gillivrayi Hook. (Proteaceae) . Pollen found in the gut of some specimens.

Figures

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. 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. 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. 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. 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.