Orientomysis calida Fukuoka, Pinkhaew & Chalermw, 2005

Type locality. Samet Island, northern Gulf of Thailand (Fukuoka et al. 2005).

Record from Thailand. Ao Praow, Sai Kaew Beach (Samet Island), northern Gulf of Thailand; Vonnapha Beach, south of Chonburi (Fukuoka et al. 2005).

Habitat and depth. Marine, depth:> 1.5 m (Fukuoka et al. 2005).

Distribution. This species is only known from the Gulf of Thailand (Fukuoka et al. 2005).

Remarks. Orientomysis calida is allied to O. leptura, which is known from Chinese coastal waters of the South China Sea, in the shape and armature of the telson, but it can be distinguished from the latter species by the characters of the fourth male pleopod, the maxilla, and the uropodal endopod (cf. Liu & Wang 1980). The two long setae terminating the exopod of the fourth male pleopod are subequal in length in O. calida, whereas those of O. leptura are unequal, with the longer seta 1.3 times as long as the shorter one. The second article of the endopod of the maxilla is not armed with tiny spines on the lateral margin in O. calida, whereas it is armed with several tiny spines in O. leptura. There is one spine on the ventral surface close to the statocyst of the uropodal endopod in O. calida, as compared to three in O. leptura (Fukuoka et al. 2005).