Arsipoda elongata, 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 : 14-17

Arsipoda elongata sp. nov.

urn:lsid:zoobank.org:act:97EB34B7-866E-4D3F-ACBE-5341B904489E

Figs 1E , 8F , 11E , 15A

Diagnosis

Arsipoda elongata sp. nov. shares the elongate antennae with A. gomezzuritai sp. nov., A. longifrons sp. nov. and A. rostrata (LAN/LB: ³ Ż 0.70, ♀ generally Ż 0.60) ( Figs 1E , 2A, F , 3C ). However, it can easily be distinguished from them by the elongate, laterally parallel elytra, and by the green metallic color.

Etymology

The specific name is a Latinized adjective referring to the elongate elytra of this species.

Type material

Holotype

NEW CALEDONIA (S): ³, Mt Humboldt , -21.8793 166.4232, ca 1400 m, montane maquis, 13 Nov. 2010, R. Ruta & M. Wanat leg. ( MNHN).

Paratypes

NEW CALEDONIA: 2 ³³, 5 ♀♀, same data as the holotype ( MNHW).

Description of the holotype (³)

Body elongate, rather flat ( Fig. 1E ); LB = 2.81 mm; maximum pronotal width at base (WP = 0.85 mm); maximum elytral width at basal third (WE = 1.18 mm). Dorsum dark metallic green. Frons and vertex wrinkled and densely punctate; frontal grooves moderately impressed, not continued to postantennal region; genae and frontal carina moderately elongate; antennae clearly longer than ½ body length ( LAN = 2.18 mm; LAN/LB = 0.77), brown; LA: 100:61:69:69:92:100:108:108:108:100:131. Pronotum slightly trapezoidal, moderately transverse (LP = 0.54 mm; WP/LP = 1.58), laterally straight; anterior angles moderately prominent, obliquely beveled; antebasal transverse sulcus clearly impressed, almost straight; lateral fovea clearly distinguishable; pronotal punctuation small, dense, distinctly impressed, evenly distributed on the microreticulate surface. Elytra distinctly elongate (LE = 2.03 mm; WE/LE = 0.58), laterally slightly arcuate; punctuation clearly larger than on pronotum, strongly impressed; interstriae smooth, very finely microreticulate and micropunctuate. Legs light brown, with dark femora; first pro- and mesotarsomeres distinctly dilated; adhesive setae on ventral side of first pro-, meso- and, partially, metatarsomeres. Venter black; last abdominal ventrite laterally clearly incised, without special preapical impressions. Median lobe of aedeagus (LAED = 1.40 mm; LE/LAED = 1.45) ( Fig. 8F ) slender, in ventral view laterally parallel, slightly narrower in apical part; apex triangular, with a small rounded median tooth; ventral surface with a wide, moderately deep ventral sulcus along central third; in lateral view, median lobe clearly and evenly curved; dorsal ligula as long as half of median lobe, wide but gradually narrower toward apex.

Biometry

Male (n = 3; range): 2.03 Ĺ LE Ĺ 2.20 mm; 1.18 Ĺ WE Ĺ 1.33 mm; 0.54 Ĺ LP Ĺ 0.64 mm; 0.85 Ĺ WP Ĺ 0.93 mm; 2.18 Ĺ LAN Ĺ 2.30 mm; 1.36 Ĺ LAED Ĺ 1.44 mm; 2.81 Ĺ LB Ĺ 3.13 mm; 3.45 Ĺ LE/LP Ĺ 3.77; 1.38 Ĺ WE/WP Ĺ 1.43; 1.45 Ĺ WP/LP Ĺ 1.58; 0.58 Ĺ WE/LE Ĺ 0.60; 0.73 Ĺ LAN/LB Ĺ 0.77; 1.45 Ĺ LE/LAED Ĺ 1.58.

Female (n = 5; mean and standard deviation; range): LE = 2.24 ± 0.07 mm (2.15 Ĺ LE Ĺ 2.35 mm); WE = 1.32 ± 0.05 mm (1.25 Ĺ WE Ĺ 1.38 mm); LP = 0.62 ± 0.02 mm (0.60 Ĺ LP Ĺ 0.65 mm); WP = 0.93 ± 0.04 mm (0.88 Ĺ WP Ĺ 0.98 mm); LAN = 1.86 ± 0.06 mm (1.78 Ĺ LAN Ĺ 1.93 mm); LSPc = 0.20 ± 0.01 mm (0.18 Ĺ LSPc Ĺ 0.21 mm); LB = 3.17 ± 0.13 mm (3.00 Ĺ LB Ĺ 3.34 mm); LE/LP = 3.61 ± 0.04 (3.58 Ĺ LE/LP Ĺ 3.67); WE/WP = 1.41 ± 0.04 (1.36 Ĺ WE/WP Ĺ 1.46); WP/LP = 1.50 ± 0.03 (1.46 Ĺ WP/ LP Ĺ 1.53); WE/LE = 0.59 ± 0.01 (0.58 Ĺ WE/LE Ĺ 0.60); LAN/LB = 0.59 ± 0.01 (0.57 Ĺ LAN/LB Ĺ 0.61); LE/LSPc = 11.30 ± 0.70 (10.75 Ĺ LE/LSPc Ĺ 12.50).

Paratypes very similar in shape, sculpture and color to the holotype. Females with shorter antennae. Spermathecal capsule ( Fig. 11E ) with globose basal part; collum about twice as long as apical part; ductus thin, short, apically inserted.

Distribution

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

Ecological notes

Collected in montane maquis at 1400 m a.s.l. No information is available about host plants.

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