Intybia kishiii (Nakane, 1955)

Ikeda, Hiroshi & Yoshitomi, Hiroyuki, 2017, Revision of the genus Intybia (Coleoptera, Malachiidae) from Japan, European Journal of Taxonomy 331, pp. 1-31 : 25-27

Intybia kishiii (Nakane, 1955)

[Japanese name: Beni-obi-jôkai-modoki]

Figs 1G , 2G , 4G , 5G , 6G , 8D , 9G , 10G , 11B

Laius kishiii Nakane, 1955a: 33 [type locality: Hozukyo, Kyoto].

Laius kishiii – Nakane 1957: 13. — Nakane 1963: 186, pl. 93, fig. 17. — Satô 1985: 165. — Nakane 1983: 164. — Satô 1989: 366.

Intybia kishiii – Wittmer 1997: 191. — Mayor 2007: 417 [catalogued]. — Yoshitomi & Hayashi 2011: 19.

Diagnosis

Coloration of head, pronotum and elytra black with bluish luster; head narrow; eyes not prominent; elytral fascia reddish orange, widened at suture and lateral margins; gonoporal piece straight, slender, with straight basal projection; semi-gonoporal piece, ligula and spinous plate absent.

Material examined

JAPAN, Honshu: Gifu Pref.: 1 ♀, Suhara, 24 Jun. 1956, K. Ohbayashi leg. ( EUMJ). – Okayama Pref.: 1 ♂, Kurashiki-shi, Mizue, 17 Aug. 2007, H. Suenaga leg. ( HSJ). – Hiroshima Pref.: 1 ♀, Miyoshi-shi, Miwaka, 13 Aug. 1980, T. Inakura leg. ( EUMJ); 1 ♂, Mihara-shi, Yahata-chô, Honjo, 28 Jun. 2013, H. Suenaga leg. ( HSJ).

JAPAN, Shikoku: Tokushima Pref.: 1 ♀, Tsuda Beach, 10 Jul. 1967, M. Sakai leg. ( EUMJ). – Ehime Pref.: 1 ♂, Ôzu, riverside of Hijikawa, Nakamura, 3 Jun. 2001, M. and A. Sakai leg. ( EUMJ); 1 ♀, same data, 7 Oct. 2001, Y. Kikuhara leg. ( EUMJ); 1 ♂, Shigenobu-gawa, 27 Jun. 2010, R. Okano leg. ( EUMJ). – Kochi Pref.: 1 ♂, 1 ♀, Nankoku-shi, estuary of Monobe-gawa, 29 Jun. 2008, Y. Satô leg. ( EUMJ); 2 ♀♀, Monobe-gawa, Nishimachi, Noichi-chô, 2 Sep. 2002, A. Sakai leg. ( EUMJ); 1 ♂, same data, 4 Oct. 2002, C. Takahashi leg. ( EUMJ); 1 ♂, 3 ♀♀, same data, 6 Jul. 2002, C. Takahashi leg. ( EUMJ); 1 ♀, same data, 14 Aug. 2002, D. Miura leg. ( EUMJ); 1 ♀, same data, 4 Oct. 2002, A. Kitahara leg. ( EUMJ); 1 ♂, 1 ♀, Tosa-shi, estuary of Niyodo-gawa, 1 Jul. 2003, M. Sakai leg. ( EUMJ); 1 ♂, 2 ♀♀, same data, 5 Oct. 2002, T. Kurihara leg. ( EUMJ); 2 ♀♀, Niyodo-gawa, Kada-Campsite, Ino-chô, 5 Oct. 2002, Y. Kikuhara leg. ( EUMJ); 1 ♀, same data, 13 Jul. 2002, Y. Kikuhara leg. ( EUMJ); 1 ♂, same data, 13 Jul. 2002, C. Takahashi leg. ( EUMJ); 1 ♀, Haruno-chô, Niyodogawa-Ohashi, 13 Jul. 2002, C. Takahashi leg. ( EUMJ).

Redescription

Male

Body ( Fig. 1G ) slightly elongate, gently convex, shining, bearing suberect pallid setae, sparsely covered with long erect setae. Coloration of head, antennomeres IV–XI, pronotum, elytra and legs black with bluish luster; antennomeres I–III reddish yellow; maxillary and labial palpi yellow; elytral fascia reddish orange.

Head narrowed anteriorly, with a deep longitudinal sulcus in middle, minutely punctate; eyes rather large, oval, not prominent; HL/HW 0.88–1.16 (1.00). Antennae ( Fig. 4G ) long, reaching base of elytra; antennomere III ( Fig. 6G ) subtrapezoidal, deeply concave in dorso-mesal portion; L/W = 0.81; approximate ratio of each antennomere (n = 1) as 7.0: 1.0: 6.5:2.5: 2.3: 2.3: 2.5: 2.5: 2.5:2.5: 3.7. Pronotum convex, closely punctate in anterior parts, densely so in lateral parts; PW/PL 1.00–1.16 (1.07). Elytra oblong-ovate, slightly broadened posteriorly, rather coarsely and closely punctate in middle, finely and sparsely so at base and before apex; elytral fascia situated just before middle, widened at suture and lateral margins; EL/EW 1.47–1.71 (1.59); EL/PL 2.70–3.24 (2.94); EW/PW 1.53–1.89 (1.69); TL/EW 2.43–2.78 (2.53). Legs rather slender. Aedeagus about 0.85 mm in AL. Gonoporal piece ( Figs 8D , 10G ) straight, slender, with straight basal projection, 0.53 mm in GL; GL/AL 0.49. Semi-gonoporal piece, ligula and spinous plate absent. Spinous area ( Fig. 9G ) densely covered with short spines.

Female

Similar to male in general appearance ( Fig. 2G ); coloration of antennae yellow, with apical 7 segments black; HL/HW 0.77–1.07 (0.89); PW/PL 0.95–1.21(1.07); EL/EW 1.42–1.82 (1.55); EL/PL 2.69–3.48 (2.99); EW/PW 1.53–2.03 (1.81); TL/EW 2.26–2.81 (2.47). Antennae ( Fig. 5G ) long; antennomere III short, distinctly expanded laterally, shallowly concave in dorsal portion, L/W = 2.00; approximate ratio of each antennomere (n = 1) as 5.0: 1.0: 3.3: 2.5: 2.2: 2.0:2.2: 2.0: 2.2: 1.8: 3.2.

Measurements

Male (n = 8): TL 3.15–3.65 (3.38) mm; HL 0.49–0.71 (0.58) mm; HW 0.55–0.61 (0.57) mm; PW 0.70–0.86 (0.77) mm; PL 0.62–0.77 (0.71) mm; EL 1.92–2.22 (2.09) mm; EW 1.19–1.50 (1.32) mm.

Female (n = 19): TL 3.08–4.20 (3.58) mm; HL 0.50–0.68 (0.57) mm; HW 0.56–0.70 (0.65) mm; PW 0.69–0.90 (0.80) mm; PL 0.63–0.83 (0.75) mm; EL 1.88–2.85 (2.25) mm; EW 1.22–1.70 (1.45) mm.

Distribution ( Fig. 11B )

Japan (Honshu, Shikoku, Kyushu); Korea.

Remarks

This species is distinct in having a narrow head and eyes that are not prominent.

Biological notes

This species inhabits grasslands at riversides.

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. 8. Endophallus of Intybia spp., A. Intybia histrio (Kiesenwetter, 1874). B. I. pelegrini pelegrini (Pic, 1910). C. I. takaraensis (Nakane, 1955). D. I. kishiii (Nakane, 1955). Abbreviations: gp = gonoporal piece; l = ligula; sgp = semi-gonoporal piece; sp = spinous plate. Scales = 0.1 mm.

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).