Arsipoda gressitti Samuelson & Biondi 2016, sp. nov.
Creators: name: Samuelson, Allan
name: Biondi, Maurizio
Publisher: name: Zenodo
Year: 2016
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Chrysomelidae
Arsipoda
Arsipoda gressitti

description: Arsipoda gressitti sp. nov.
urn:lsid:zoobank.org:act: 75D53499-67B7-4382-A9CF-DB929FE5556C
Figs 1H, 8I, 11H, 15A
Diagnosis
Arsipoda gressitti sp. nov. is, along with A. geographica and A. shirleyae, one of the yellowish species lacking ventral morphological characters that allow a reliable identification. These species can be distinguished only by relying on the morphology of genitalia (Figs 8 H–I, 9I, 11G–H, O).
Etymology
Male patronym. Named after Dr. J. Linsley Gressitt (1914–1982), who devoted his energies to the establishment, development and expansion of the Entomology Department of the Bishop Museum (Honolulu).
Type material
Holotype
NEW CALEDONIA: ♂, Plateau de Dogny [-21.60987 165.88907], Melaleuca savanna, 9 Apr. 1973, J.L. Gressitt leg. (BPBM).
Paratypes
NEW CALEDONIA: 1 ♂, 3 ♀♀, same data as the holotype (BPBM); 3 ♂♂, 1 ♀, ditto, 1000 m, 11 Apr. 1973, on Metrosideros operculata (BPBM); 1 ♂, 1 ♀, ditto, on Pancheria aemula Schltr. (BPBM); 2 ♂♂, 1 ♀, ditto, 1 Feb. 1963, C.M. Yoshimoto leg. (BPBM); 2 ♂♂, 2 ♀♀, Farino, Parc des Grandes Fougères, N of Pic Vincent, -21.59929 165.77519, 670 m, track and forest, 17 Nov. 2008, M. Wanat leg.(MNHW);
Description of the holotype (♂)
Body moderately elongate, feebly convex; LB = 2.22 mm; maximum pronotal width at base (WP = 0.71 mm); maximum elytral width at apical third (WE = 0.98 mm). Dorsum yellowish, metallic, with irregular darkened spots on elytra. Frons and vertex microreticulate and punctate; head grooves weakly impressed, not continued to postantennal region; genae and frontal carina short; antennae slightly longer than ½ body length (LAN = 1.30 mm; LAN/LB = 0.59), basally yellow, gradually and slightly darker toward apex; LA: 100:67:67:54:75:75:92:87:92:92:125. Pronotum trapezoidal, distinctly transverse (LP = 0.45 mm; WP/LP = 1.58), laterally straight; anterior angles moderately prominent; antebasal transverse sulcus moderately impressed, slightly sinuate, with small lateral fovea; pronotal surface microreticulate, with small, dense punctures, distinctly impressed. Elytra moderately elongate (LE = 1.55 mm; WE/LE = 0.63), laterally moderately arcuate; punctuation clearly larger than on pronotum and clearly impressed; interstriae microreticulate. Legs yellowish; first pro- and mesotarsomeres weakly dilated; adhesive setae present on ventral side of first pro-, meso- and, partially, metatarsomeres. Venter light brown; last abdominal ventrite laterally incised, without special preapical impressions. Median lobe of aedeagus (LAED = 0.90 mm; LE/LAED = 1.71) (Fig. 8I) in ventral view fusiform, but narrower in preapical part; apex with median rounded tooth; ventral surface broadly concave at basal half; in lateral view, median lobe curved at basal third and in preapical part, thin especially at basal third, with straight apex; dorsal ligula from about half length to preapical part of median lobe of aedeagus, wide, tapered toward apex.
Biometry
Male (n = 10; mean and standard deviation; range): LE = 1.72 ± 0.13 mm (1.55 Ĺ LE Ĺ 1.94 mm); WE = 1.09 ± 0.09 mm (0.98 Ĺ WE Ĺ 1.24 mm); LP = 0.51 ± 0.04 mm (0.45 Ĺ LP Ĺ 0.56 mm); WP = 0.82 ± 0.07 mm (0.71 Ĺ WP Ĺ 0.92 mm); LAN = 1.46 ± 0.10 mm (1.36 Ĺ LAN Ĺ 1.60 mm); LAED = 0.99 ±
0.05 mm (0.90 Ĺ LAED Ĺ 1.06 mm); LB = 2.30 ± 0.10 mm (2.13 Ĺ LB Ĺ 2.40 mm); LE/LP = 3.39 ± 0.06 (3.32 Ĺ LE/LP Ĺ 3.49); WE/WP = 1.33 ± 0.03 (1.29 Ĺ WE/WP Ĺ 1.37); WP/LP = 1.61 ± 0.02 (1.58 Ĺ WP/ LP Ĺ 1.64); WE/LE = 0.63 ± 0.01 (0.61 Ĺ WE/LE Ĺ 0.65); LAN/LB = 0.63 ± 0.02 (0.59 Ĺ LAN/LB Ĺ 0.67); LE/LAED = 1.73 ± 0.06 (1.65 Ĺ LE/LAED Ĺ 1.85).
Female (n = 8; mean and standard deviation; range): LE = 1.90 ± 0.08 mm (1.80 Ĺ LE Ĺ 2.04 mm); WE = 1.19 ± 0.04 mm (1.14 Ĺ WE Ĺ 1.25 mm); LP = 0.54 ± 0.03 mm (0.52 Ĺ LP Ĺ 0.58 mm); WP = 0.89 ± 0.04 mm (0.82 Ĺ WP Ĺ 0.94 mm); LAN = 1.38 ± 0.05 mm (1.30 Ĺ LAN Ĺ 1.44 mm); LSPc = 0.19 ± 0.01 mm (0.17 Ĺ LSPc Ĺ 0.20 mm); LB = 2.51 ± 0.10 mm (2.35 Ĺ LB Ĺ 2.63 mm); LE/LP = 3.53 ± 0.07 (3.41 Ĺ LE/LP Ĺ 3.62); WE/WP = 1.35 ± 0.04 (1.30 Ĺ WE/WP Ĺ 1.41); WP/LP = 1.64 ± 0.05 (1.58 Ĺ WP/ LP Ĺ 1.73); WE/LE = 0.63 ± 0.02 (0.61 Ĺ WE/LE Ĺ 0.66); LAN/LB = 0.55 ± 0.01 (0.52 Ĺ LAN/LB Ĺ 0.57); LE/LSPc = 10.12 ± 0.91 (9.51 Ĺ LE/LSPc Ĺ 12.14).
Paratypes very similar in shape, sculpture and color to the holotype. Antennae distinctly shorter in female. Spermatheca (Fig. 11H) with globose, slightly elongate basal part, elongate collum, and short apical part; ductus thin, short, apically inserted.
Distribution
Central Grande Terre (Fig. 15A).
Ecological notes
Collected in forest and along track between 670 and 1000 m a.s.l. Found on Pancheria aemula (Cunoniaceae) and Metrosideros operculata (Myrtaceae).
description: Published as part of Samuelson, Allan & Biondi, Maurizio, 2016, Taxonomic revision of the genus Arsipoda Erichson, 1842 (Coleoptera, Chrysomelidae) in New Caledonia, pp. 1-61 in European Journal of Taxonomy 230 on pages 22-23, DOI: 10.5852/ejt.2016.230, http://zenodo.org/record/3840408