Clavicornaltica nakanoi, Suenaga, 2023

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, Zootaxa 5301 (4), pp. 447-460 : 454-456

publication ID	https://doi.org/ 10.11646/zootaxa.5301.4.3
publication LSID	lsid:zoobank.org:pub:F05230C6-0F99-46DA-9DA2-FAD081E960D3
DOI	https://doi.org/10.5281/zenodo.8035953
persistent identifier	https://treatment.plazi.org/id/03C88B39-FF89-661F-FF41-F8DD6A8B6B07
treatment provided by	Plazi
scientific name	Clavicornaltica nakanoi
status	sp. nov.

Treatment

Clavicornaltica nakanoi sp. nov.

[Japanese name: Eguri-higebuto-komaru-tobi-hamushi]

( Figs 1c View FIGURE 1 , 2c, f, i View FIGURE 2 , 3d View FIGURE 3 , 4 i–l View FIGURE 4 , 5g –i View FIGURE 5 , 6e–h View FIGURE 6 , 7 View FIGURE 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 View FIGURE 1 ); elytra impunctated; hind wings degraded in both sexes ( Fig. 3d View FIGURE 3 ); 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 View FIGURE 4 , 6e–h View FIGURE 6 ); endophallus short and cylindrical, and sclerotized part at near base inverted U-shaped ( Figs 4i View FIGURE 4 , 6e, g View FIGURE 6 ); spermatheca ( Fig. 5g View FIGURE 5 ): 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 View FIGURE 1 ). Antennae and legs yellowish brown.

Head. Head rectangular, smooth ( Fig. 2c View FIGURE 2 ); frontal tubercles indistinct; frontal carina absent. Antennae: clava curved interiorly, straight exteriorly ( Fig. 2f View FIGURE 2 ).

Thorax. Pronotum trapezoidal, strongly convex; surface smooth. Scutellum subtriangular. Elytra strongly convex, impunctated and smooth. Hind wings degraded in both sexes ( Fig. 3d View FIGURE 3 ). Metafemora oval.

Abdomen. Middle of second abdominal sternite with sharply raised carina and 13 coarse and strong punctures ( Fig. 2i View FIGURE 2 ). Pygidium of male subtriangular with a pair of ridges in middle.

M a l e. Aedeagus rather slender ( Figs 4i, j View FIGURE 4 , 6e–h View FIGURE 6 ); apical margin projected; apex of projection trapezoidal ( Figs 4i View FIGURE 4 , 6e, g View FIGURE 6 ); 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 View FIGURE 4 , 6e, g View FIGURE 6 ). Spicule separated, slender ( Fig. 4k View FIGURE 4 ). Tegmen Y-shaped, slender ( Fig. 4l View FIGURE 4 ).

F e m a l e. Spermatheca ( Fig. 5g View FIGURE 5 ): 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 View FIGURE 5 ). Tignum ( Fig. 5i View FIGURE 5 ): 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). GoogleMaps 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 View FIGURE 8 ).

Notes. These new species were collected from Conocephalum sp. on a rock ( Fig. 7 View FIGURE 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.