Arsipoda paniensis, 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 : 32-33

Arsipoda paniensis sp. nov.

urn:lsid:zoobank.org:act:B101B881-3488-4D66-BC58-4F795DB7EC73

Figs 2C , 4F , 9D , 11K , 14B

Diagnosis

Arsipoda paniensis sp. nov. and A. yiambiae are the only species with a laterally clearly convex pronotum, but they are clearly different in color and size: the first is dark green, metallic, and larger; the second is yellow and smaller. Genitalia are easily distinguishable too ( Figs 9D , 10C , 11K, R ).

Etymology

The specific name is a Latinized adjective referring to Mt Panié, the only locality where the species has been collected.

Type material

Holotype

NEW CALEDONIA: ♂, Mt Panié, 1450–1638 m, [- 20.58860164.77020], 4Apr. 1981, on Symplocaceae : Symplocos , 1687 m, J.L. Gressitt leg. ( BPBM).

Paratypes

NEW CALEDONIA: 3 ♀♀, Mt Panié, 1450–1638 m, [-20.58860 164.77020], 4Apr.1981, on Symplocaceae : Symplocos sp., 1637 m, J.L. Gressitt leg. ( BPBM); 2 ♀♀, ditto, on Frecynetia sp. ( BPBM); 1 ♂, 2 ♀♀, ditto, 1450–1648 m, on Rapanea sp. ( BPBM); 1 ♂, 4 ♀♀, ditto, 1450–1738 m, on Scirpus sp. ( BPBM); 1 ♀, ditto, 1647 m, 27–29 Jul. 1971, Gahnia sp. ( BPBM); 1 ♀, ditto, smt, 1638 m, 29 Oct. 1978, sifted litter, J.C. Watt leg ( NZAC).

Description of the holotype (♂)

Body moderately elongate, moderately convex ( Fig. 2C ); LB = 2.53 mm; maximum pronotal width at base (WP = 0.98 mm); maximum elytral width at apical third (WE = 1.30 mm). Dorsum black, metallic. Frons and vertex microreticulate and sparsely punctate; head grooves distinctly impressed, not continued to postantennal region; frontal carina wide, moderately elongate; antennae slightly longer than ½ body length (LAN = 1.43 mm; LAN/LB = 0.56) yellowish, gradually and slightly darker toward apex; LA:100:65:54: 61:88:77:92:85:88:92:108. Pronotum slightly trapezoidal, distinctly transverse (LP = 0.60 mm; WP/LP = 1.63), laterally convex ( Fig. 4F ); anterior angles weakly prominent; antebasal transverse sulcus weakly impressed, nearly straight, without clearly distinguishable lateral fovea; pronotal surface microreticulate and punctulate, with very small, moderately dense punctures. Elytra moderately elongate (LE = 2.00 mm; WE/LE = 0.65), laterally slightly arcuate; punctuation clearly larger than pronotal punctures and clearly impressed; interstriae microreticulate. Legs brownish with paler knees and darker hind femora; first pro- and mesotarsomeres clearly dilated; adhesive setae present on ventral side of first pro-, meso- and, partially, metatarsomeres. Venter black; last abdominal ventrite laterally incised, with shallow median impression. Median lobe of aedeagus (LAED = 1.10 mm; LE/LAED = 1.83) ( Fig. 9D ) in ventral view slightly tapered toward apex; apex triangular-obtuse; ventral sulcus thin and shallow; in lateral view, median lobe slightly and evenly curved; dorsal ligula from half length to apex, narrowed toward apex.

Biometry

Male (n = 2): LE = 2.00, 2.03 mm; WE = 1.30, 1.30 mm; LP = 0.60, 0.61 mm; WP = 0.98, 0.99 mm; LAN = 1.43, 1.55 mm; LAED = 1.10 mm, und.; LB = 2.53, 2.63 mm; LE/LP = 3.33, 3.31; WE/WP = 1.33, 1.32; WP/LP = 1.63, 1.61; WE/LE = 0.65, 0.64; LAN/LB = 0.56, 0.59; LE/LAED = 1.83 mm, und.

Female (n = 10; mean and standard deviation; range): LE = 2.09 ± 0.12 mm (1.88 Ĺ LE Ĺ 2.23 mm); WE = 1.34 ± 0.08 mm (1.20 Ĺ WE Ĺ 1.43 mm); LP = 0.61 ± 0.04 mm (0.54 Ĺ LP Ĺ 0.65 mm); WP = 1.01 ± 0.07 mm (0.90 Ĺ WP Ĺ 1.10 mm); LAN = 1.41 ± 0.07 mm (1.30 Ĺ LAN Ĺ 1.50 mm); LSPc = 0.18 ± 0.01 mm (0.17 Ĺ LSPc Ĺ 0.20 mm); LB = 2.67 ± 0.17 mm (2.38 Ĺ LB Ĺ 2.84 mm); LE/LP = 3.42 ± 0.08 (3.31 Ĺ LE/LP Ĺ 3.57); WE/WP = 1.32 ± 0.02 (1.30 Ĺ WE/WP Ĺ 1.34); WP/LP = 1.66 ± 0.03 (1.62 Ĺ WP/LP Ĺ 1.70); WE/LE = 0.64 ± 0.01 (0.63 Ĺ WE/LE Ĺ 0.65); LAN/LB = 0.52 ± 0.02 (0.50 Ĺ LAN/LB Ĺ 0.56); LE/LSPc = 11.38 ± 0.84 (10.05 Ĺ LE/LSPc Ĺ 12.64).

Paratypes very similar in shape, sculpture and color to the holotype. Antennae slightly shorter in female. Spermatheca ( Fig. 11K ) with pear-shaped basal part, collum about as long as apical part; ductus thickset, elongate, U-shaped, apically inserted.

Distribution

Endemic to Mt Panié, Northern Grande Terre ( Fig. 14B ).

Ecological notes

The collecting localities are located in a dense, evergreen humid forest area between 1450 and 1738 m a.s.l. Found on Scirpus sp. and Gahnia sp. ( Cyperaceae ), Frecynetia sp. ( Pandanaceae ), Rapanea sp. ( Primulaceae ), Symplocos sp. ( Symplocaceae ). 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. 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.

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. 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.