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

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.3853491
persistent identifier	https://treatment.plazi.org/id/03D7C972-FF90-FFE9-FDDF-32C0FC9BFB46
treatment provided by	Valdenar
scientific name	Arsipoda evax Samuelson, 1973
status

Treatment

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

Arsipoda evax Samuelson, 1973: 128 .

Arsipoda species D – Samuelson 1989: 410.

Arsipoda sp. – Samuelson 1994: 181.

Type material examined

Holotype

NEW CALEDONIA: ³, Thio , [-21,60682 166,21460], Mar. 1959, N.L.H. Krauss leg. ( BPBM); GoogleMaps

Paratypes

NEW CALEDONIA: 1 ³, 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 View Fig , 2D, I View Fig ). 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 View Fig , 9E View Fig , 10A View Fig , 11B, F, L, P View Fig ).

Median lobe of aedeagus ( Fig. 8G View Fig ) 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 View Fig ) 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 View Fig ).

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.