Platytenerus castaneus ( Kôno, 1930 ), Kono, 1930

Murakami, Hiroyuki, 2015, The genus Platytenerus Miyatake, 1985 (Coleoptera: Cleridae: Neorthopleurinae), with description of a new species from Japan, Zootaxa 3936 (4), pp. 584-592 : 586-588

Platytenerus castaneus ( Kôno, 1930)

( Figs 1, 3, 5 –12, 14, 16, 18, 19, 22– 26)

Tenerus castaneus Kôno, 1930: 136 , fig. 3. ( Type locality: Chuzenji, Tochigi Pref., Japan)

Platytenerus castaneus ( Kôno, 1930) : Miyatake, 1985: 158, pl. 25, fig. 27; Melnik, 2009: 71, fig. 16.

Specimens examined. (N = 26) [Hokkaido] 1 ♂ ( HNHJ, No. 7129), Nukabira, Kamishihoro-chô, 2.VII. 1970, K. Yoshida leg. [Fukushima] 1 ♀ (KSJ), Iwashitakazumazawa, Minamiaizu-shi, 25.VII. 2004, S. Kondo et A. Kubota leg. [Niigata] 1 ♂ (KSJ), Hiwadaira, near Renge spa, Itogawa-shi, 20.VII. 2001, S. Tsuyuki leg. [Tokyo] 1 ♂ (KSJ), Mt. Mitake, Oume-shi, 23.VI. 1994, Y. Kusakabe leg.; 1 ♂ & 3 ♀♀ (KSJ), Hongô, Bunkyô-ku, 5–8.VI. 1990, Y. Kusakabe leg.; 2 ♀♀ (KSJ), same locality, 22.VI. 1992, Y. Kusakabe leg.; 1 ♀ (KSJ), same locality, 12.VI. 1991, Y. Kusakabe leg. [Osaka] 1 ♀ ( EUMJ), Mt. Iwawaki, Nagano-shi, 23.VII. 1966, Y. Kimura leg. [Tottori] 1 ♂ ( EUMJ), Mt. Daisen, Daisen-chô, 15.VII. 1956, T. Shibata leg. [Ehime] 1 ♀ ( EUMJ), Mt. Ishizuchi, Jôjusha, Saijô-shi, 20.VIII. 1962, Y. Arita leg.; 2 ♂♂ ( EUMJ), Mt. Takanawa, Matsuyama-shi, 15.VII. 1952, H. Kusunoki leg.; 1 ♀ ( EUMJ), Mt. Ishizuchi, Tsuchigoya, Saijô-shi, 12.VIII. 2014, by light trap, R. Okano leg.; 2 ♂♂ ( EUMJ), Tengukôgen, 24.VII. 2014, by light trap, R. Okano leg.; 1 ♂ ( EUMJ), Nishidani, Kumakôgen-chô, 24.VII. 2014, by light trap, K. Yoshida leg. [Tokushima] 1 ♀ (KSJ), Mt. Takagi, Kizawa-mura, 12.VII. 1998, unknown leg. [Kumamoto] 1 ♂ (KKJ), Shiragadake, Asagiri-chô, 19.VII. 1998, by light trap, K. Kido leg.; 1 ♂ (MOJ), same locality, 11.VIII. 2014, by light trap, M. Oda leg. [Oita] 1 ♂ (KSJ), Houei-rindô, Ogata-machi, Ôno-gun, 24.VII. 2003, T. Haneda leg.; 1 ♂ (SIJ), Kurodake, 28–29.VIII. 1979, A. Miyata leg. [Kagoshima] 1 ♂ (MOJ), Uchidume, Minami- Ôsumi-chô, 4.VII. 2007, by light trap, M. Oda leg.

Diagnosis. This species is similar to P. iriomotensis sp. n., but distinguishable by the following characteristics: antennae narrowly pectinate; elytral disc finely with asetigerous punctations; elytra 1.36–1.89 ( 1.45) times as wide as pronotal width; pygidium not arcuate at the middle; 8 th sternite with apical margin almost straight; phallobasic rod wide; phallus with a linear median sclerite at apical 2 / 3.

Redescription. Male. Head and pronotum chestnut brown; antennae, legs and abdomen brownish yellow; elytra mostly chestnut brown, gradually becoming paler near apical margin ( Fig. 1); head, pronotum and elytra little darker or lighter in some specimens. Body covered with brownish yellow setae.

Antennae narrowly pectinate; antennomere 1 claviform; 2 rectangular; 3 triangular, three times as long as wide; 4 longer than wide; 5–10 same as long as wide; 11 fusiform ( Fig. 3).

Pygidium with apical margin slightly posteriorly curved; pygidial struts elongate (Fig. 12). Apical margin of 7 th sternite broadly emarginated in the middle. Apical margin of 8 th sternite almost straight (Fig. 14). Spicular fork with lateral plates not expanded; spicular apodeme separated at apical 1 / 3; intraspicular fork elongate (Fig. 16).

Fully inflated aedeagus with elongate connecting membrane between tegmen and phallus, into which basal 1 / 3 of phallus is inserted; phallobase rather thin, with two short processes weakly pigmented in dorsal view; phallobasic rod wide, divided apically; phallus rather elongate, with a linear median sclerite at apical 2 / 3 (Figs 18, 19).

Female. Similar to male, but antennomeres 4–10 weakly expanded outwardly; inner margin of hind tibiae not concave; apical margin of 7 th sternite narrowly incised in the middle. Pygidium with apical margin round ( Fig. 22). Eighth sternite slightly emarginated in the middle ( Fig. 23). Ovipositor shorter than length of abdomen; ( Fig. 24); lamina with a linear median plate in ventral view ( Fig. 25, shown by black arrow); proctigeral bacculi long, reaching proctiger in dorsal view ( Fig. 26).

Measurements and ratio. Male (n = 9): BL 5.31–8.30 ( 6.80) mm; PW 1.52–2.47 ( 2.08) mm; PL 1.26 –2.00 ( 1.70) mm; EW 2.20–3.50 ( 2.89) mm; EL 4.05–6.30 ( 5.10) mm; PW/PL 1.14–1.28 ( 1.22); EL/EW 1.61–1.84 ( 1.76); EL/PL 2.42–3.21 (3.00); EW/PW 1.32–1.50 ( 1.40). Female (n = 9): BL 6.74–9.66 ( 7.86) mm; PW 2.00– 2.90 ( 2.36) mm; PL 1.63–2.37 ( 1.94) mm; EW 2.77–4.10 ( 3.41) mm; EL 4.94–7.36 ( 5.92) mm; PW/PL 1.11–1.29 ( 1.22); EL/EW 1.65–1.94 ( 1.73); EL/PL 2.74–4.05 ( 3.07); EW/PW 1.36–1.89 ( 1.45).

Distribution. Japan (Hokkaido, Honshu, Shikoku, Kyushu), Russia (after Melnik, 2009).

Biological notes. Some of examined materials were collected from a tree hollow of Zelkova serrata in Hongô, Tokyo (private communication, K. Sakai), and by light trap in the primary forest (see Miyatake, 1985).