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

description: Clavicornaltica tokushigei sp. nov.
[Japanese name: Tsumakire-higebuto-komaru-tobi-hamushi]
(Figs 1b, 2b, e, h, 3c, 4e–h, 5d–f, 6c, d)
Diagnosis. This species is distinguished from other Japanese species by the following features: body small and oval, 0.90–1.08 mm in length (Fig. 1b); last antennomere truncate and notched apically (Fig. 2e); elytral punctures distinct, arranged in longitudinal rows; hind wings degraded in both sexes (Fig. 3c); aedeagus truncate anteriorly, strongly curved ventrally in lateral view (Figs 4f, 6d); anterior margin notched at middle; lateral sides gradually widened to apex (Figs 4e, 6c); endophallus elongate and cylindrical, and sclerotized part at near base inverted Ushaped (Fig. 4e); spermatheca (Fig. 5d): receptacle slender, gradually widened to base; pump short and cylindrical; spermathecal gland valve stout.
Description. BL: 0.90–1.08 mm (0.99±0.05, n = 19), BW: 0.64–0.72 mm (0.68±0.03, n = 19), PL: 0.18–0.26 mm (0.22±0.02, n = 18), PW: 0.54–0.66 mm (0.58±0.03, n = 19), EL: 0.64–0.80 mm (0.72±0.05, n = 19), EW: 0.36–0.40 mm (0.38±0.02, n = 19), HTL: 0.22–0.28 mm (0.26±0.02, n = 12).
Body oval and convex.
Coloration. Body pale brown (Fig. 1b). Antennae and legs yellowish brown.
Head. Head rectangular, very shallowly and sparsely punctate (Fig. 2b); vertex smooth; frontal tubercles indistinct; frontal carina absent. Antennae: clava curved interiorly, straight exteriorly, apical margin of last antennomere truncate, notched apically (Fig. 2e).
Thorax. Pronotum lunate, somewhat convex, very shallowly and sparsely punctate. Scutellum subtriangular. Elytra somewhat convex, distinctly punctate, punctures arranged in longitudinal rows. Hind wings degraded in both sexes (Fig. 3c). Metafemora oval, sparsely haired.
Abdomen. Middle part of the second abdominal sternite with a sharply raised carina and seven coarse and strong punctures (Fig. 2h). Pygidium of male subtriangular with a pair of ridges in middle.
M a l e. Aedeagus rather widened towards apex, strongly curved ventrally in lateral view (Figs 4f, 6d); apical margin truncate, notched at middle (Figs 4e, 6c); lateral sides gradually widened to apex. Endophallus elongate and cylindrical, branched at base, with inverted U-shaped plate at near base (Figs 4e, 6c). Spicule separated (Fig. 4g). Tegmen Y-shaped (Fig. 4h).
F e m a l e. Spermatheca (Fig. 5d): receptacle slender, gradually widened to base; pump short and cylindrical; spermathecal gland valve stout. Vaginal palpi deeply V-shaped, slender with two to three pores on middle and three setae on apex (Fig. 5e). Tignum (Fig. 5f): sclerotized part spine-shaped, long and slender.
Type materials. Holotype: male (SEHU), “ èfiẹaümaüDz / JAPAN: OKINAWA / Nago-shi / Mt. Nagodake / 22-XII-2019 / Norihide Tokushige leg.” (typed on white card), “ èfiẹaüm / aüDz / 22 xii 2019 / dzfflǿdz ” (typed on white card), “Haruki Suenaga Collection / HS-22-38” (typed on white card), “Holotype / Clavicornaltica tokushigei / Suenaga, 2023 / Appended label by H. Suenaga, 2023” (typed on red card with black frame). Paratypes: Japan. [the Ryukyus] Okinawa Pref., Okinawa-jima I.: 1 ♁, 4 exs. (HSPC: HS-21-39), same data as the holotype; 1 ♁, 2 exs. (HSPC: HS-22-9), same locality and collector, but 5.X.2019; 2 exs. (HSPC: HS-22-13), same locality and collector, but 25.X.2019; 1 ♀, 2 exs. (HSPC: HS-22-15), same locality and collector, but 9.XI.2019; 1 ex. (HSPC), same locality and collector, but 22.II.2020; 1 ex. (HSPC), same locality and collector, but 29.II.2020; 1 ex. (HSPC), same locality and collector, but 21.III.2020; 1 ♀ (HSPC: HS-22-36), same locality and collector, but 31.X.2021; 2 exs. (HSPC: HS-22-33), Yona, Kunigami-son, 11.XII.2021, N. Tokushige leg.; 1 ex. (HSPC), Mt. Nishime-dake, Kunigami-son, 11.VII.2020, N. Tokushige leg.; 1 ex. (HSPC), same locality and collector, but 22.VIII.2020; 1 ex. (HSPC), same locality and collector, but 4. V.2021; 1 ex. (HSPC), same locality and collector, but 28.VIII.2021; 2 exs. (HSPC), Mt. Nishime-dake and Uka, Kunigami-son, 29.VIII.2020, N. Tokushige leg.; 1 ex. (HSPC: HS-23-15), Nangusuku-kôen Park, Nago-shi, 18.X.2020, N. Tokushige leg.; 2 exs. (HSPC), Imadomari, Nakijin-son, 13. VI.2020, N. Tokushige leg.; 1 ♀, 1 ex. (HSPC: HS-22-16), Mt. Nekumachiji-dake, Oogimi-son, 19.IX.2020, N. Tokushige leg.; 1 ex. (HSPC), Mt. Kugani-dake, Oogimi, Oogimi-son, 12.VIII.2019, N. Tokushige leg.; 1 ex. (HSPC), same locality and collector, but 2.XI.2019.
Distribution. Japan (Ryukyu Is.: Okinawa-jima I.) (Fig. 8).
Notes. Almost all specimens of this new species were collected from leaf litter by sifting.
Etymology. The specific epithet of “ tokushigei ” is dedicated to Dr. Norihide Tokushige, Professor of Faculty of Education of Ryukyu University who collected this new species for the first time.
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 451-454, DOI: 10.11646/zootaxa.5301.4.3, http://zenodo.org/record/8035929