Omoplax mukojimensis Souma 2022

Omoplax mukojimensis Souma, 2022 Figs 2 H, 4 H, 6 H, 8 H, 10 H, 11 H, 13 H, 14 H Omoplax mukojimensis Souma, 2022 a: 122. Holotype: ♀; type locality: Japan • “ 東京都小笠原村聟島南部 ” [= Ogasawara Islands, Mukojima Group, Mukojima Island, Southern part]; KPMNH. References. Shimamoto and Ishikawa (2023: 94) (catalog); Souma (2023: 9) (monograph). Material examined. No additional specimens have been collected since the original description (Souma 2022 a). Diagnosis. Omoplax mukojimensis is recognized among the other Omoplax species based on a combination of the following characteristics: rostrum reaching middle part of mesosternum (Fig. 11 H); pronotal disc pale brown (Figs 4 H, 6 H); hood more than 0.5 times as wide as maximum width of head across compound eyes, not reaching apex of clypeus (Fig. 14 H); paranotum with areolae throughout its length; anterior margin of hemelytron strongly curved downward in apical half (Figs 8 H, 10 H); subcostal and discoidal areas of hemelytron united; costal area narrower than fused subcostal and discoidal areas; Sc (subcosta) vein of hemelytron indistinct in apical part of dorsal view; R + M (fused radius and media) vein of hemelytron indistinct, not carinate; and ventral surface of body dark brown (Figs 13 H). Remarks. Among all the Omoplax species, O. mukojimensis is most similar to O. majorcarinae in terms of its general habitus; however, the former can be distinguished from the latter based on the paranotum with areolae throughout its length (without areolae in the middle part and with areolae in the remaining parts in O. majorcarinae) (Figs 3 G, 4 G, H, 5 G, 6 G, H, 14 G, H). Morphological differences between O. mukojimensis and the five other Omoplax species are presented in the identification key below. Distribution. Japan: Ogasawara Islands: Mukojima Group (Mukojima Island) (Fig. 19) (Souma 2022 a). Omoplax mukojimensis is endemic to Mukojima Island. Host plant. Unknown (Souma 2022 a). Bionomics. Omoplax mukojimensis inhabits an evergreen broad-leaved forest with a subtropical climate in the Ogasawara Islands (Souma 2022 a). A single adult was collected in April; nymphs are unknown (Souma 2022 a).