Eutetrapha chrysochloris chrysargyrea Bates, 1884

Lin, Mei-Ying, Bi, Wen-Xuan & Yang, Xing-Ke, 2017, A revision of the genus Eutetrapha Bates (Coleoptera: Cerambycidae: Lamiinae: Saperdini), Zootaxa 4238 (2), pp. 151-202 : 182

Eutetrapha chrysochloris chrysargyrea Bates, 1884

Figs. 96–97 , 149 f–149k

Eutetrapha chrysargyrea Bates, 1884: 256 . Type locality: Japan, Higo (= Kumamoto Pref.), Oyayama . Type depository: MNHN.

Eutetrapha metallescens var. chrysargyrea ; Matsushita, 1933: 404.

Eutetrapha chrysargyrea ; K. Ohbayashi, 1963: 315, pl. 158, figs. 9a & 9b; Kojima & Hayashi, 1969: 156, pl. 49, fig. 7.

Saperda chrysargyrea: Abdullah & Abdullah, 1966: 89

Eutetrapha chrysochloris chrysargyrea ; Kusama & Takakuwa, 1984 In: the Japanese Society of Coleopterology (ed.) 1984: 518, pl. 90, figs. 620 b–c; N. Ohbayashi et al., 1992: 635; Kurihara & A. Saito, In: N. Ohbayashi & Niisato, 2007: 654, pl. 73, fig. 16; Chou et al., 2010: 316, figs 21–23, 25; Löbl & Smetana, 2010: 323.

Eutetrapha chrysochloris ; Pu & Jin, 1991: 190 (part); Hua, 2002: 208 (part); Hua et al., 2009: 213, 354 (part), pl. LXXVIII, 896.

Supplementary description. Length 12–17 mm. Body black, furnished with golden-green scales and with white to brown erect hairs. Inner below of first and 3rd antennal segments, each tibia and dorsum of tibiae furnished with feeble silver-blue hairs, posterior tarsi with white hairs, especially at sides ( Fig. 149 j); pronotum provided with black maculae on each lateral side and a pair on dorsum. Elytra with lateral sides black with narrow or short green longitudinal stripe ( Fig. 149 h); each dorsum with three black maculae, apical one elongated and curved like a hook. Frons in male narrower than twice width of inferior eye-lobe.

Diagnosis. This subspecies is distinguishable from Eutetrapha chrysochloris chrysochloris (Bates) by outer angle of elytral apex quadrate or with minute spine; elytral maculae more or less smaller and an apical hook-like maculae sometimes separate into two ones; antennae slightly longer (N. Ohbayashi, January 2016, personal communication).

In the original description, Bates (1884) noted as follows: “Approaches Glenea more nearly than any of the other species, the first ventral segment being somewhat longer than other either of the three following; the apices of the elytra are, however, very obtusely and narrowly truncated.”

Remarks. According to N. Ohbayashi (2016, personal communication), the black maculae on the pronotum or elytra are rather variable though it shows the tendency for two groups in Japanese population. The most important difference of these two subspecies is the spine of elytral outer apex. But this spine of nominotypical subspecies seems to show the cline on the degree. That of the Hokkaido population (type locality) is most developed, but getting shorter toward southwest of Honshu, and the population of extreme western Honshu cannot be distinguished from E. c. chrysargyrea of Shikoku and Kyushu. Therefore, these two subspecies could be synonymized. We refrain from proposing any synonymies in this work since colleagues in Japan are better positioned to study and assess the situation in Japan.

Distribution. Japan (Shikoku, Kyushu and Chugoku district (extreme western) of Honshu).

Specimens examined. Japan: 1 female ( Fig. 97 ), Ehime Pref. Imabari, Mt. Narabara , 2010 . VIII.8, leg. N. Ohbayashi ( IZAS, ex. CNO); 1 male ( Fig. 96 ), Ehime Pref., Odamiyama, Hônomata forest road, 1995 . VII.1, leg. N. Ohbayashi (CNO); 1 female, Ehime Pref., Mt. Ishizuch, Tsuchigoya , 1997 . VI.21, leg. N. Ohbayashi (CNO).

Figures

FIGURES 92 – 97. Eutetrapha chrysochloris. habitus. 92 – 95. Eutetrapha chrysochloris chrysochloris (Bates, 1879), from Japan. 92. Male. 93. Female. 94. Female, type of Paraglenea chrysochloris v. bruningi Pic, 1952. 95. Male, showing the elytral apical tooth at outer angle. 96 – 97. Eutetrapha chrysochloris chrysargyrea Bates, 1884, from Japan. 96. Male. 97. Female. Scale 2 mm. 95 and 96: photographed by Nobuo Ohbayashi, not to scale.

FIGURES 148 – 155. Scales, elytral apex and tarsus. f. Scales on scutellum and elytron (left of scutellum). g. Scales on pronotum (nearly middle, besides the left black spot). h. Lateral view of left elytron. i. Elytral apex. j. Hind tarsus, showing the hairs at sides. k. Scales on scutellum. 148. Eutetrapha chrysochloris chrysochloris (Bates, 1879). 149. E. chrysochloris chrysargyrea Bates, 1884. 150. E. shaanxiana Lin & Yang, sp. nov.; h- 1, male; h- 2; female. 151. E. tianmushana Lin & Bi, sp. nov. 152. E. metallescens (Motschulsky, 1860). 153. E. lini Chou, Chung & Lin, 2010. 154. E. gui Lin & Yang, sp. nov. 155. Paraglenea virides (Pu & Jin, 1991) comb. nov. Scale 100 µm.