New species of the plant bug genus Neolygus Knight from Japan, Taiwan and Thailand (Hemiptera: Heteroptera: Miridae: Mirini) Author Yasunaga, Tomohide text Zootaxa 2024 2024-05-02 5446 4 451 487 http://dx.doi.org/10.11646/zootaxa.5446.4.1 journal article 10.11646/zootaxa.5446.4.1 1175-5326 11102124 C204C80E-332C-4537-A6BA-1FC372BD6783 Neolygus yonanus n. sp. Figs. 5A–B , 9B , 10A–D , 17M–O Material examined. Holotype ( ♂ ). JAPAN : Ryukyus , Okinawa Island , Kunigami Village , Yona , 26.76, 128.22, 21 Feb 1973 , H. Hasegawa ( NIAES ) ( AMNH _ PBI 00378769 ). Diagnosis. Currently known by a single male specimen. Most closely related to N. kyushuensis (Yasunaga) ( Fig. 2A–B ), from which N. yonanus n. sp. can be distinguished by its ovoid body ( Fig. 5A ); apical 3/4 of clypeus darkened ( Fig. 5B ); antennal segment II slightly longer than metafemur; labium as long as basal width of pronotum; posterior margin of pronotum, scutellum and clavus darkened ( Fig. 5A ); apical protuberances of parameres more developed ( Fig. 10A–D ); and vesical spiculum tapered apically ( Figs. 9B , 17O ). Description. Holotype male : Body oval ( Fig. 5A ); dorsum pale brown (probably greenish when alive), with uniformly distributed, pale, simple, reclining setae. Head shining; vertex narrow, with basal transverse carina that is as thick as pronotal collar; apical 3/4 of clypeus darkened ( Fig. 5B ). Antenna pale brown; apex of segment II, whole segments III and IV brown; segment II slightly longer than metafemur; segment III longer than head width across eyes. Labium shiny pale brown, reaching but not exceeding apex of metacoxa. Pronotum shining, darkened posteriorly; scutellum dark brown; pleura including scent efferent system pale brown. Hemelytra somewhat matte; clavus darkened; apical part of corium semi-circularly darkened; membrane pale smoky brown. All coxae and legs pale brown; metafemur with two brown rings that are obliterated ventrally; tibial spines brown; apex of each tarsomere III darkened. Ventral side of abdomen uniformly pale brown. Male genitalia ( Figs. 9B , 10A–D , 17M–O ): Parameres with rather developed apical protuberance on sensory lobes ( Fig. 10A–D ); vesical spiculum almost straight, tapered and flattened apically ( Figs. 9B , 17O ). Female : Unknown. Measurements : See Table 1 . Etymology. Named for the type locality, Yona (in Kunigami Village, North Okinawa Island); Latinized as an adjective. Distribution . Japan (Ryukyus: Okinawa Island). Biology. Collection record suggests that this new species appears earliest (February) among the Japanese congeners. No other information is available on the biology.