Intybia niponica ( Lewis, 1895 )

Ikeda, Hiroshi & Yoshitomi, Hiroyuki, 2017, Revision of the genus Intybia (Coleoptera, Malachiidae) from Japan, European Journal of Taxonomy 331, pp. 1-31 : 21-23

Intybia niponica ( Lewis, 1895)

[Japanese name: Kuro-ki-obi-jôkai-modoki]

Figs 1E , 2E , 4E , 5E , 6E , 9E , 10E , 11B , 12B

Laius niponicus Lewis, 1895: 116 [type locality: Hakodate sand-hills, also at Kobé]. Laius niponicus – Champion 1921: 332. — Greiner 1937: 152. — Nakane 1957: 13, fig. 3. — Nakane

1963: 186, pl. 93, fig. 15. — Nakane 1983: 164. — Satô 1985: 164, pl. 26, fig. 8. — Satô 1989: 366. Intybia niponica – Satô et al. 2006: 349. Intybia niponicus – Wittmer 1997: 191. — Mayor 2007: 417 [catalogued]. — Yoshitomi & Hayashi

2011: 19. — Asano 2013: 21.

Diagnosis

Elytra with a yellow fascia, widened at suture and lateral margins; antennomere III broad bean-like shape excavated on dorsal surface; gonoporal piece straight, slender; semi-gonoporal piece and ligula absent; one spinous plate present.

Material examined

JAPAN, Hokkaido: 1 ♂, 5 ♀♀, Wakkanai, 7 Jul. 1977, K. Baba leg. ( EUMJ); 1 ♂, Shakotan, 22 Jun. 1986, M. Satô leg. ( EUMJ); 1 ♂, Toyotomi, Toyotoku, 20 Jun. 1961, Y. Nishijima leg. ( SEHU); 1 ♂, Teine, 25 Oct. 1961, K. Kamimura leg. ( SEHU); 1 ♂, Kushiro-shi, Otanoshike, 1 Jul. 2012, H. Suenaga leg. ( HSJ); 1 ♂, Nanaehama, Hakodate-shi, 17 Aug. 1977, N. Nishikawa leg. ( EUMJ); 1 ♀, Ishikarihama, 22 Aug, S. Takagi leg. ( SEHU); 1 ♀, Oshima, Oshamanbe, 15 Jun. 1956, Y. Nishijima leg. ( SEHU); 1 ♀, same data, 12 Aug. 2009, M. Ôhara leg. ( SEHU); 1 ♀, Ishikari-shi, Atsuta-ku, Shippu, H. Suenaga leg. ( HSJ).

JAPAN, Honshu: Yamagata Pref.: 2 ♂♂, 1 ♀, Nishiarase, 28 May 1953, K. Shirahata leg. ( EUMJ). – Niigata Pref.: 1 ♂, Kurokawa, Echigo, 11 Jul. 1964, K. Baba leg. ( EUMJ). – Chiba Pref.: 1 ♀, Shirahamachô, 22 Jun. 2001, T. Ito leg. ( EUMJ). – Shizuoka Pref.: 1 ♀, Kambara-gun, Fukiagenohama, Estualy of Fujikawa, 31 Aug. 2008, Y. Satô leg. ( EUMJ). – Aichi Pref.: 6 ♀♀, Omotehama, Toyohashi, 24 Jun. 1990, M. Satô leg. ( EUMJ).

JAPAN, Shikoku: Kagawa Pref.: 1 ♂, Ariake-hama, 12 Aug. 2012, H. Yoshitomi leg. ( EUMJ); 2 ♂♂, 3 ♀♀, same data, 15 Aug. 2015, H. Yoshitomi leg. ( EUMJ); 1 ♀, same data, 28 Jun. 2015, H. Yoshitomi leg. ( EUMJ); 3 ♂♂, 3 ♀♀, same data, 28 Jun. 2015, H. Ikeda leg. ( EUMJ). – Tokushima Pref.: 1 ♀, Naruto-shi, Ooge-jima, 29 Sep. 1972, M. Tomokuni and M. Sakai leg. ( EUMJ). – Ehime Pref.: 2 ♂♂, 8 ♀♀, Ômishima, 19 Jul. 1959, M. Satô leg. ( EUMJ); 2 ♂♂, 5 ♀♀, Odagahama, Higashimura, Imabarishi, 29 Aug. 2000, J. Ogawa leg. ( EUMJ); 5 ♂♂, 1 ♀, Sakurai, Imabari-shi, 10 Jun. 2012, H. Yoshitomi leg. ( EUMJ); 7 ♂♂, 1 ♀, Karashihama, Imabari-shi, 24 Jun. 2014, H. Yoshitomi leg. ( EUMJ); 2 ♀♀, Ohkushi-hama, Nakajima, Matsuyama-shi, 6 Jul. 2010, S-T. Hisamatsu leg. ( EUMJ); 1 ♂, Matsuyama, 5 Jun. 1973, K. Ito leg. ( EUMJ); 1 ♀ (already reported by Yano 1957), Matsuyama, Yoshida-hama, 31 Aug. 1950, M. Miyatake leg. ( EUMJ); 2 ♀♀, same data, 31 Jul. 1951, S. Hisamatsu leg. ( EUMJ); 1 ♂, same data, 18 Apr. 1953, S. Hisamatsu leg. ( EUMJ); 2 ♂♂, 1 ♀, Muzuki-jima, 13 Apr. 1958, F. Takechi leg. ( EUMJ). – Kochi Pref.: 4 ♂♂, 5 ♀♀, Nankoku-shi, estuary of Monobe-gawa, 29 Jun. 2008, Y. Satô leg. ( EUMJ); 1 ♂, 4 ♀♀, Monobe-gawa, Kônan-shi, 29 Jun. 2008, T. Ichiyanagi leg. ( EUMJ); 1 ♀, Yasuda-chô, Aki-shi, 29 Jun. 2008, T. Ichiyanagi leg. ( EUMJ).

JAPAN, Kyushu: Saga Pref.: 1 ♂, Kyogatake, 3–4 Aug. 1974, Y. Notsu leg. ( EUMJ).

JAPAN, Ogasawara Isls.: 1 ♂, 6 ♀♀ (already reported by Satô et al. 2006), Yome-jima, 15 Apr. 2000, T. Ohbayashi leg. ( EUMJ).

RUSSIA: 1 ♂, 2 ♀♀, Sakhalin, Adachi Isshiki leg. ( SEHU).

Redescription

Male

Body ( Fig. 1E ) oval, shining, with gray pubescence. Coloration of head, antennomeres IV–XI, pronotum and elytra black; antennomeres I–III and elytral fascia yellow; legs yellow, except for femora partly infuscate.

Head densely punctate; eyes oval,prominent; HL/HW 0.60–0.78 (0.67).Antennae ( Fig. 4E ) long,reaching base of elytra; antennomere III ( Fig. 6E ) broad bean-like shaped, excavate on dorsal surface; L/W = 1.05; approximate ratio of each antennomere (n = 1) as 5.2: 1.0: 6.3:1.5: 1.7: 1.7: 1.7:1.7: 1.7: 1.8:2.7. Pronotum rather densely punctate at lateral parts, rugosely so before hind angles, more or less sparsely so in middle part; PW/PL 1.07–1.42 (1.21). Elytra oval, broadened posteriorly, densely punctate; elytral fascia situated just before middle, widened at suture and lateral margins; EL/EW 1.21–1.52 (1.37); EL/ PL 2.45–3.26 (2.75); EW/PW 1.48–1.91 (1.66); TL/EW 1.99–2.49 (2.28). Aedeagus about 0.70 mm in AL. Gonoporal piece ( Fig. 10E ) straight, slender, 0.5 mm in GL; GL/AL 0.71. Semi-gonoporal piece and ligula absent. Spinous area ( Fig. 9E ) densely covered with long spines; spinous plate large and ovate.

Female

Similar to male in general appearance ( Fig. 2E ); coloration of antennae yellow, with apical 5 or 6 segments black; HL/HW 0.60–0.88 (0.69); PW/PL 1.04–1.38 (1.17); EL/EW 1.18–1.52 (1.33); EL/PL 2.38–3.00 (2.74); EW/PW 1.57–1.91 (1.75); TL/EW 1.99–2.46 (2.21). Antennae long; antennomere III short, distinctly expanded laterally, shallowly concave in dorsal portion, L/W = 1.91; approximate ratio of each antennomere (n = 1) as 5.5: 1.0: 3.5: 1.7:1.7: 1.7: 1.7: 1.7: 1.7: 1.7:2.7. Hind wings absent.

Measurements

Male (n = 20): TL 2.73–4.17 (3.13) mm; HL 0.47–0.75 (0.56) mm; HW 0.76–0.99 (0.83) mm; PW 0.75–1.05 (0.85) mm; PL 0.55–0.87 (0.70) mm; EL 1.59–2.60 (1.92) mm; EW 1.12–1.79 (1.40) mm.

Female (n = 20): TL 2.82–4.22 (3.30) mm; HL 0.49–0.75 (0.57) mm; HW 0.73–1.00 (0.83) mm; PW 0.72–1.10 (0.86) mm; PL 0.64–0.88 (0.73) mm; EL 1.67–2.60 (2.00) mm; EW 1.29–2.00 (1.50) mm.

Distribution ( Fig. 11B )

Japan (Hokkaido, Honshu, Shikoku, Kyushu, Shôdo-shima, Ogasawara Isls.: Yome-jima); Korea; Russia (Far East, Sakhalin [NR]).

Remarks

Female is apterous. The specimens from Hokkaido have a larger body, but the other features are quite the same as other specimens.

Biological notes

The larva of this species was described in detail by Asano (2013) and showed foetometamorphosis. This species inhabits beach plant communities ( Asano 2013), and can be collected by sweeping beach plants ( Fig. 12B ).

Figures

Fig. 1. Dorsal habitus Intybia spp., ♂. A. Intybia histrio (Kiesenwetter, 1874). B. I. tsushimensis (Satô & Ohbayashi, 1968). C. I. donan sp. nov., holotype. D. I. pelegrini pelegrini (Pic, 1910). E. I. niponica (Lewis, 1895). F. I. takaraensis (Nakane, 1955). G. I. kishiii (Nakane, 1955). H. I. kawasakii (Nakane, 1956), holotype. Scales = 1.0 mm.

Fig. 2. Dosal habitus of Intybia spp., ♀. A. Intybia histrio (Kiesenwetter, 1874). B. I. tsushimensis (Satô & Ohbayashi, 1968). C. I. donan sp. nov., paratype. D. I. pelegrini pelegrini (Pic, 1910). E. I.niponica (Lewis, 1895). F. I.takaraensis (Nakane, 1955).G. I. kishiii (Nakane, 1955). H. I. kawasakii (Nakane, 1956), paratype. Scale bars = 1.0 mm.

Fig. 4. Right antennae of Intybia spp., ♂. A. Intybia histrio (Kiesenwetter, 1874). B. I. tsushimensis (Satô & Ohbayashi, 1968). C. I. donan sp. nov. D. I. pelegrini pelegrini (Pic, 1910). E. I. niponica (Lewis, 1895). F. I. takaraensis (Nakane, 1955). G. I. kishiii (Nakane, 1955). H. I. kawasakii (Nakane, 1956). Scale bars = 0.2 mm.

Fig. 5. Right antennae of Intybia spp., ♀. A. Intybia histrio (Kiesenwetter, 1874). B. I. tsushimensis (Satô & Ohbayashi, 1968). C. I. donan sp. nov. D. I. pelegrini pelegrini (Pic, 1910). E. I. niponica (Lewis, 1895). F. I. takaraensis (Nakane, 1955). G. I. kishiii (Nakane, 1955). H. I. kawasakii (Nakane, 1956). Scale bars = 0.2 mm.

Fig. 6. SEM photographs of right male antennomere III of Intybia spp. A. Intybia histrio (Kiesenwetter, 1874). B. I. tsushimensis (Satô & Ohbayashi, 1968). C, H. I. donan sp. nov., showing projection (H). D. I. pelegrini pelegrini (Pic, 1910). E. I. niponica (Lewis, 1895). F. I. takaraensis (Nakane, 1955). G. I. kishiii (Nakane, 1955).

Fig. 9. Spinous area and spinous plate of Intybia spp. A. Intybia histrio (Kiesenwetter, 1874). B. I. tsushimensis (Satô & Ohbayashi, 1968). C. I. donan sp. nov. D. I. pelegrini pelegrini (Pic, 1910). E. I. niponica(Lewis,1895). F. I. takaraensis (Nakane, 1955). G. I. kishiii (Nakane, 1955).Abbreviations: sa = spinous area; sp = spinous plate. Scales = 0.1 mm.

Fig. 10. Endophallic sclerites of Intybia spp. A. Intybia histrio (Kiesenwetter, 1874). B. I. tsushimensis (Satô & Ohbayashi, 1968). C. I. donan sp. nov. D. I. pelegrini pelegrini (Pic, 1910). E. I. niponica (Lewis, 1895). F. I. takaraensis (Nakane, 1955). G. I. kishiii (Nakane, 1955). Abbreviations: gp = gonoporal piece; l = ligula; sgp = semi-gonoporal piece. Scale bars = 0.1 mm.

Fig. 11.Map showing thedistribution of Intybia spp.A.The histriogroup:●:Intybia histrio(Kiesenwetter, 1874), ▲: I. tsushimensis (Satô & Ohbayashi, 1968), ■: I. donan sp. nov.). B. The pelegrini group: ○: I. pelegrini (Pic, 1910), △: I. niponica (Lewis, 1895), □: I. takaraensis (Nakane, 1955), ×: I. kishiii (Nakane, 1955), +: I. kawasakii (Nakane, 1956).

Fig. 12. Habitat and habits of Intybia spp. A. Intybia histrio, ♂ (at Awa-shima, Kagawa Pref.). B. I. niponica, ♀ (at Saijo-shi, Ehime Pref.), photographs by HY. C – D. Type locality of I. donan sp. nov. (Mantabaru-shinrinkôen, Yonaguni-chô, Yaeyama-gun, Okinawa Pref.), showing the flower of Ardisia sieboldii (D), photographs by HI.