Eutetrapha bicostata Hayashi, 1994

Figs. 52–53

Eutetrapha bicostata Hayashi, 1994: 75, pl. 6, fig. 19. Type locality: China, Taiwan, Nantou H., Saichitau . Type depository: OSAKA .

Eutetrapha bicostata; Yu et al., 2002: 68, 119, pl. 25, fig. 3; Hua et al., 2009: 213, 354, pl. LXXVIII, 895; Löbl & Smetana, 2010: 323; Nakamura et al., 2014: 170.

Diagnosis. This species differs from all known congeners by having no punctuate black markings on elytra but only two pairs of longitudinal narrow black vittae (Hayashi 1994).

Remarks. We did not examine any additional specimens of this species during this study. The two dorsal habitus photographs presented by Yu et al. (2002) and Hua et al. (2009), were both same photograph of the holotype. The holotype is a female instead of a male (as reported in the original description), with the last visible sternite grooved (Fig. 52 c) and claws simple. The male claws are unknown.

Distribution. China: Taiwan.

Type specimens examined (through seven photographs taken by Shigehiko Shiyake). Holotype, female (not male as reported by Hayashi 1994), Taiwan, Nantou H., Saichitau, 1972. V.8, leg. C. C. Raw (Fig. 53, not C. C. La as reported by Hayashi 1994), deposited in Osaka Museum of Natural History, ex Collection Masamichi Yagi, Japan .