Arsipoda longifrons, 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 : 28-30

Arsipoda longifrons sp. nov.

urn:lsid:zoobank.org:act:0488C97F-BF4D-4467-AAA0-D398BED562BB

Figs 2A , 9B , 11J , 15A

Diagnosis

This species is similar in shape, sculpture and often color to A. gomezzuritai sp. nov. and A. rostrata ( Figs 2A, F , 3C ). They are distinguishable from other Arsipoda species by the elongate antennae (LAN/ LB: ³ Ż 0.70, ♀ generally Ż 0.60) and the elongate frons with narrow frontal carina. The three species can be reliably distinguished by the shape of genitalia ( Figs 9B, G , 10D , 11J, M, S ).

Etymology

The name is a Latinized word referring to the elongate frons of the species.

Type material

Holotype

NEW CALEDONIA (S): ³, Humboldt (S track), -21.90517 166.35621, 800–950 m, maquis, beating along track to Col de Vulcain, 9 Nov. 2008, M. Wanat leg. ( MNHN).

Paratype

NEW CALEDONIA: 1 ♀, same data as the holotype ( MNHW).

Description of the holotype (³)

Body moderately elongate and convex ( Fig. 2A ); LB = 2.72 mm; maximum pronotal width at base (WP = 0.89 mm); maximum elytral width near the middle (WE = 1.30 mm). Dorsum bronze, metallic. Frons and vertex irregularly wrinkled and punctate; vertex concave; head grooves moderately impressed, not continued to postantennal region; genae and frontal carina clearly elongate; antennae clearly longer than ½ body length ( LAN = 1.98 mm; LAN/LB = 0.73), basally light brown, gradually darker toward apex; LA: 100:64:71:86:107:107:118:121:121:111:139. Pronotum slightly trapezoidal, weakly transverse (LP = 0.58 mm; WP/LP = 1.54), laterally weakly concave; anterior angles not prominent; antebasal transverse sulcus clearly impressed, distinctly sinuate; lateral fovea not clearly distinguishable; pronotal punctuation dense, small and shallow; surface microreticulate. Elytra moderately elongate (LE = 1.98 mm; WE/LE = 0.66), laterally clearly arcuate; punctuation clearly larger than pronotal punctures, clearly impressed; interstriae smooth, micropunctuate. Legs yellowish, with darkened femora; first pro- and mesotarsomeres distinctly dilated; adhesive setae present on ventral side of first pro-, meso- and, partially, metatarsomeres. Venter brownish; last abdominal ventrite laterally incised, without special preapical impressions. Median lobe of aedeagus (LAED = 1.14 mm; LE/LAED = 1.73) ( Fig. 9B ) in ventral view thickened, slightly narrower at apical fourth, and clearly narrower at base; apical part subrounded, with a wide median tooth; ventral surface smooth; in lateral view, median lobe curved at basal fourth, then straight; dorsal ligula short, from apical third to preapical part of median lobe of aedeagus, triangular, with wide base.

Biometry

Male (n = 1): LE = 1.98 mm; WE = 1.30 mm; LP = 0.58 mm; WP = 0.89 mm; LAN = 1.98 mm; LAED = 1.14 mm; LB = 2.72 mm; LE/LP = 3.43; WE/WP = 1.46; WP/LP = 1.54; WE/LE = 0.66; LAN/LB = 0.73; LE/LAED = 1.73. Female (n = 1): LE = 2.13 mm; WE = 1.43 mm; LP = 0.63 mm; WP = 0.93 mm; LAN = 1.90 mm; LSPc = 0.21 mm; LB = 2.91 mm; LE/LP = 3.40; WE/WP = 1.54; WP/LP = 1.48; WE/ LE = 0.67; LAN/LB = 0.65; LE/LSPc = 10.22. Paratype (female) very similar in shape, sculpture and color to the holotype; antennae shorter. Spermatheca ( Fig. 11J ) with globose-elongate basal part; collum thickset, short, slightly longer than apical part; ductus elongate, apically inserted.

Distribution

Endemic to Mt Humboldt area, Southern Grande Terre ( Fig. 15A ).

Ecological notes

Collected in maquis between 800 and 950 m a.s.l. No information is available about host plants.

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. 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. 3. Habitus. A. Arsipoda wanati sp. nov, Mt Humboldt. B. A. yiambiae Samuelson, 1973, Yiambi. C. A. gomezzuritai sp. nov., Dzumac Mts.

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.