Neolygus chikanoshima, Yasunaga, 2024

Yasunaga, Tomohide, 2024, New species of the plant bug genus Neolygus Knight from Japan, Taiwan and Thailand (Hemiptera: Heteroptera: Miridae: Mirini), Zootaxa 5446 (4), pp. 451-487 : 462-463

publication ID

https://doi.org/ 10.11646/zootaxa.5446.4.1

publication LSID

lsid:zoobank.org:pub:C204C80E-332C-4537-A6BA-1FC372BD6783

DOI

https://doi.org/10.5281/zenodo.11121628

persistent identifier

https://treatment.plazi.org/id/6C640C52-B303-FFB9-78AF-F89FFD6EFB4F

treatment provided by

Plazi

scientific name

Neolygus chikanoshima
status

sp. nov.

Neolygus chikanoshima n. sp.

Figs. 1E–G View FIGURE 1 , 4D–F View FIGURE 4 , 9A, E View FIGURE 9 , 10E–F View FIGURE 10 , 15 View FIGURE 15

Material examined. Holotype (♀). JAPAN: Kyushu, Nagasaki Pref., Goto Islands, Shin-Kamigoto Town , Nakadori Island , Tsuzuki-Hamanoura , 32.960822, 129.027677, UV lighting, 5–6 Jun 2020, T. Yasunaga ( NWHS) ( AMNH _ PBI 00378767 About AMNH ). GoogleMaps Paratypes: JAPAN: same data as for holotype, 1♂ 1♀ ( TYCN) [a male specimen was damaged (accidentally squashed) while collecting ( Fig. 4D–E View FIGURE 4 )] GoogleMaps .

Diagnosis. Judging from the similarity in external features and male genitalic structures, this new species is assumed to be most closely related to N. kyushuensis (Yasunaga) ( Fig. 2A–B View FIGURE 2 ) and its sibling N. tiliicola (Kulik) ( Fig. 2D–E View FIGURE 2 ), from which N. chikanoshima n. sp. can be distinguished by its ovoid, rather stout body ( Fig. 1E, G View FIGURE 1 ); antennal segment III longer than width of head across eyes; larger dark macula at apex of corium; right paramere with conical process at apex of sensory lobe ( Fig. 10E–F View FIGURE 10 ); thick-rimmed, elongate-oval sclerotized ring ( Fig. 9E View FIGURE 9 , 15L View FIGURE 15 ); and interramal sclerite on posterior wall bearing distinct field of spinules ( Fig. 15M–N View FIGURE 15 ).

Description. Body oval, rather stout ( Figs. 1E–G View FIGURE 1 , 4D–F View FIGURE 4 ); dorsum pale viridian, tinged with brown on posterior pronotum and clavus in fresh specimens ( Fig. 1E View FIGURE 1 ), with uniformly distributed, pale, simple, reclining setae ( Fig. 15B View FIGURE 15 ). Head olive green, shining; vertex narrow, with basal transverse carina that is rather flat and as thick as pronotal collar ( Fig. 15A View FIGURE 15 ); apical 1/3 of clypeus darkened ( Fig. 1F View FIGURE 1 ). Antenna pale brown, in fresh specimens tinged with red; segments III and IV brown; segment III longer than head width across eyes. Labium shiny reddish brown, slightly exceeding apex of mesocoxa ( Fig. 4E–F View FIGURE 4 ). Pronotum shining, somewhat brownish posteriorly; scent efferent system whitish green, with relatively thick peritreme ( Fig. 15D View FIGURE 15 ). Hemelytra with a pair of dark maculae on apex of corium; clavus tinged with brown; membrane pale smoky brown, partly speckled with brown spots. Coxae and legs yellowish green; tibiae and tarsi pale brown; apex of each tarsomere III darkened; meta-tarsomere II as long as III ( Fig. 15E View FIGURE 15 ); pretarsal structure as in Fig. 15F View FIGURE 15 . Ventral side of abdomen uniformly pale viridian ( Fig. 4E–F View FIGURE 4 ).

Male genitalia ( Figs. 9A View FIGURE 9 , 10E–F View FIGURE 10 , 15H–K View FIGURE 15 ): Parameres as in Fig. 10E–F View FIGURE 10 ; right paramere with conical apical protuberance on sensory lobe; vesica with tumid spiculum and relatively broad ventral sclerite ( Figs. 9A View FIGURE 9 , 15H View FIGURE 15 ).

Female genitalia ( Figs. 9E View FIGURE 9 , 10E–F View FIGURE 10 , 15L–O View FIGURE 15 ): Sclerotized rings thick-rimmed, elongate ovoid, mesially contiguous to each other ( Fig. 9E View FIGURE 9 , 15L View FIGURE 15 ); posterior wall as in Fig. 15M–O, E View FIGURE 15 ; anterior part of interramal sclerite with distinct field of spinules ( Fig. 15M–N View FIGURE 15 ).

Measurements: See Table 1 View TABLE 1 .

Etymology. Named for the type locality, Chika-no-shima [= ancient name of Goto Islands]; a noun in apposition.

Distribution. Japan (Goto Islands-Chain: Nakadori Island).

Biology. One male and two female adults of this new species were collected using UV light trap at night. No biological information is currently available.

AMNH

American Museum of Natural History

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Hemiptera

Family

Miridae

Genus

Neolygus

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