Clavicornaltica nakanoi Suenaga 2023, sp. nov.
Creators: name: Suenaga, Haruki
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Chrysomelidae
Clavicornaltica
Clavicornaltica nakanoi

description: Clavicornaltica nakanoi sp. nov.
[Japanese name: Eguri-higebuto-komaru-tobi-hamushi]
(Figs 1c, 2c, f, i, 3d, 4 i–l, 5g –i, 6e–h, 7)
Diagnosis. This species is distinguished from other Japanese species by the following features: body sub-spherical, 0.92–1.18 mm in length (Fig. 1c); elytra impunctated; hind wings degraded in both sexes (Fig. 3d); aedeagus constricted at antero-lateral sides, and shortly projected apically; apex of projection trapezoidal; anterio-lateral sides gradually narrowed to base; lateral sides distinctly widened to apex (Figs 4i, j, 6e–h); endophallus short and cylindrical, and sclerotized part at near base inverted U-shaped (Figs 4i, 6e, g); spermatheca (Fig. 5g): receptacle oval; pump gradually narrowed to apex; spermathecal gland valve stout.
Description. BL: 0.92–1.18 mm (1.06±0.08, n = 15), BW: 0.70–0.82 mm (0.76±0.04, n = 15), PL: 0.18–0.24 mm (0.21±0.02, n = 15), PW: 0.58–0.74 mm (0.64±0.04, n = 15), EL: 0.66–0.82 mm (0.75±0.05, n = 15), EW: 0.38–0.46 mm (0.42±0.03, n = 15), HTL: 0.26–0.32 mm (0.29±0.02, n = 13).
Body sub-spherical and convex.
Coloration. Body pale brown (Fig. 1c). Antennae and legs yellowish brown.
Head. Head rectangular, smooth (Fig. 2c); frontal tubercles indistinct; frontal carina absent. Antennae: clava curved interiorly, straight exteriorly (Fig. 2f).
Thorax. Pronotum trapezoidal, strongly convex; surface smooth. Scutellum subtriangular. Elytra strongly convex, impunctated and smooth. Hind wings degraded in both sexes (Fig. 3d). Metafemora oval.
Abdomen. Middle of second abdominal sternite with sharply raised carina and 13 coarse and strong punctures (Fig. 2i). Pygidium of male subtriangular with a pair of ridges in middle.
M a l e. Aedeagus rather slender (Figs 4i, j, 6e–h); apical margin projected; apex of projection trapezoidal (Figs 4i, 6e, g); antero-lateral sides constricted; lateral sides weakly widened to apex; endophallus short tube-shaped, Y-shaped at base, with inverted U-shaped plate at near base (Figs 4i, 6e, g). Spicule separated, slender (Fig. 4k). Tegmen Y-shaped, slender (Fig. 4l).
F e m a l e. Spermatheca (Fig. 5g): receptacle oval; pump gradually narrowed to apex; spermathecal gland valve stout. Vaginal palpi deeply V-shaped, slender with three pores on middle and two setae on apex (Fig. 5h). Tignum (Fig. 5i): sclerotized part spine-shaped, rather longer and slender.
Type materials. Holotype: male (SEHU), “ èfiẹŨDZWŀDzĩ‼ϩffi / JAPAN: OKINAWA / Taketomi-cho / Uehara, Mt. Tedo-yama / 29-XI–1-XII-2017 / Fumitaka Nakano leg.” (typed on white card), “ èfiẹŔfflffiơ‹ ĦRss› / ŨDZWŀDz ĩ‼ϩffi / 24°23’08″N 123°48’48″E / 29 XI–1 XII 2017, 30m / +Øĸǝ leg.” (typed on white card), “Haruki Suenaga Collection / HS-22-32” (typed on white card), “Holotype / Clavicornaltica nakanoi / Suenaga, 2023 / Appended label by H. Suenaga, 2023” (typed on red card with black frame). Paratypes: Japan. [the Ryukyus] Okinawa Pref., Ishigaki-jima I.: 1 ♁ (HSPC), Yonebara, Ishigaki-shi, 17.III.2008, H. Suenaga leg. Iriomote-jima I.: 4 exs. (HSPC), Riv. Aira-gawa, Taketomi-chô, 24.XI.2018, F. Nakano leg.; 2 ♀♀, 2 exs. (HSPC: HS-22-14, 17), alt. 60 m, Haiminaka, Ootomi-rindô, Taketomi-chô, 23.VII.2017, F. Nakano leg.; 1 ex. (HSPC), Mt. Tedô-yama, Uehara, Taketomi-chô, 1–3.XI.2016, F. Nakano leg.; 2 ♁♁, 1 ex. (HSPC: HS-22-11, 12), same locality and collector but, 2–5.X.2017; 2 ♁♁, 1 ex. (HSPC: HS-22-6, 7), same locality and collector, but 29.XI–1.XII.2017; 1 ♁, 5 exs. (HSPC: HS-22-3, 5), alt. 90 m, Ushiku-mori, Taketomi-chô, 30.XI.2017, F. Nakano leg.; 3 exs. (HSPC), alt. 180 m, same locality and collector, but 23.XI.2018. Yonaguni-jima I.: 1 ♁ (HS-23-10), Mantabaru, Yonaguni-chô, 24.I.2022, T. Matsuta leg.
One male specimen collected at Yonebara, Ishigaki-shi is paratype of C. sakishimana which was designated by Suenaga and Yoshida (2016).
Distribution. Japan (Ryukyu Is.: Ishigaki-jima I., Iriomote-jima I. and Yonaguni-jima I.) (Fig. 8).
Notes. These new species were collected from Conocephalum sp. on a rock (Fig. 7), and from litter by sifting. Etymology. The specific epithet of “ nakanoi ” is dedicated to Mr. Fumitaka Nakano, a young coleopterist who discovered this new species.
description: Published as part of Suenaga, Haruki, 2023, Two new species of Clavicornaltica Scherer (Coleoptera, Chrysomelidae, Galerucinae) from the Ryukyu Islands, Southwestern Japan, with a redescription of C. sakishimana Suenaga and Yoshida, pp. 447-460 in Zootaxa 5301 (4) on pages 454-456, DOI: 10.11646/zootaxa.5301.4.3, http://zenodo.org/record/8035929