Neolygus chichibumontis n. sp,

Figs. 4G–H, 7A–D, 14J–O

Material examined. Holotype (♂). JAPAN: Honshu, Saitama Pref., Chichibu City, Otaki, near Mameyaki-bashi (bridge), 35.911, 138.821, UV lighting, 28 Jun 2014, T. Tago (AMNH _ PBI 00378766) (NWHS).

Diagnosis. Currently known by a single male specimen. Recognized by its moderate size; almost immaculate, yellowish green dorsum; relatively narrow head and wide vertex; and structure of the male genitalia. Externally very similar to N. flavoviridis (Yasunaga) (Fig. 3A), N. hoberlandti (Kulik) (Fig. 3B), N. kawasawai Yasunaga (female unknown), N. makiharai (Yasunaga) (Fig. 16O) or N. nozakii Yasunaga (Fig. 7E–F) (female unknown); exact identification of these similar species with uniformly pale green and small- to moderate-sized bodies requires dissection and careful examination of the male genitalia.

Description. Holotype male: Body elongate ovoid, moderate in size; basic coloration pale yellowish green (Fig. 4G–H, fading to stramineous in dry-preserved specimen), almost immaculate; dorsal surface shining, with uniformly distributed, pale, simple, semierect setae (Fig. 14J). Head uniformly pale, relatively narrow. Antenna pale brown; segment III slightly longer than head width across eyes; segments III and IV brown. Labium shiny pale reddish brown, slightly exceeding apex of mesocoxa; apical 1/3 of segment IV dark brown. Pronotum, scutellum and pleura pale; scent efferent system creamy white. Hemelytron immaculate; membrane pale smoky brown, with pale veins. All coxae and legs pale brown; metafemur with two pale brown, incomplete rings; apex of each tarsomere III darkened; meta-tarsomere II about as long as III (Fig. 14L); pretarsal structure as in Fig. 14M. Abdomen uniformly pale.

Male genitalia (7A–D, 14N–O): Right paramere short, with bulbous sensory lobe (Fig. 7A–B); left paramere with weak apical protuberance on sensory lobe; vesica with sharp, straight spiculum and slender, sword-like ventral sclerite (Fig. 7C–D, 14O).

Female: Unknown.

Measurements: See Table 1.

Etymology. Named for Chichibu City, the type locality of this new species, combined with Latin adjective montis [= of mountain].

Distribution. Japan (Honshu: Saitama Pref.).

Biology. Unknown.