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; 8th 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 7th sternite broadly emarginated in the middle. Apical margin of 8th 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 7th 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).

Figures

FIGURES 1 – 4. Male habitus (1, 2) and antennae (3, 4) of Platytenerus spp. 1, 3, Platytenerus castaneus; 2, 4, P. iriomotensis sp. n., holotype.

FIGURES 5 – 11. Body parts of Platytenerus castaneus. 5, Head in ventral view (arrow shows post gular processes); 6, prothorax in ventral view; 7, metendosternite in dorsal view; 8, maxilla in ventral view; 9, labrum in dorsal view; 10, mandible in ventral view; 11, labium in ventral view.

FIGURES 22 – 26. Female genitalia of Platytenerus castaneus. 22, Pygidium; 23, 8 th sternite; 24, genitalia; 25, 26, apical parts of ovipositor (25, ventral view, arrow shows a linear median plate; 26, dorsal view). Lettering: Vg, vagina; Sp, spermatheca; SpG, spermathecal grand; SpD, spermathecal duct; MO, median oviduct; BC, bursa copratrix.