Nythomiris nagamasai, Yasunaga, 2024

Nythomiris nagamasai sp. nov.

( Figs 3A–B View Fig , 4A− B View Fig , 5A–D View Fig , 6D–E View Fig , 15A–H View Fig , 16A–G View Fig )

Type material. HOLOTYPE: J, THAILAND: Phranakhon Si Ayutthaya, Huntra, Rajamangala University of Technology Suvarnabhumi ( RMUTSB), Huntra Campus , 14°22′39.3″N 100°36′22.0″E, on flowers of Acacia sp. , 24.viii.2008, T.Yasunaga ( DOAT) ( AMNH _ PBI 00378800 About AMNH ) GoogleMaps . PARATYPES: THAILAND: Same data as for holotype, 3 ♀♀ ( TYCN); same locality and collector, flowers of Cassia sp. , 24.x.2008, 1 J 3 ♀♀ ( SNUC, TYCN, ZRC).

Diagnosis. Recognized by its pale dorsum; narrow vertex; reddish striae on frons; rather shorter antennomere II that is shorter than metafemur; tapered left paramere; short spicules and lobal sclerites on vesica; and rather enlarged sclerotized rings. These characters enable differentiation from the other congener, N. nepalicus sp. nov.

Description. As in generic description. Body generally pale brown ( Fig 12 View Fig ); dorsal surface relatively shining, almost glabrous or with very sparsely distributed, pale, simple, semierect setae ( Figs 15B–C View Fig ). Head shiny pale brown; vertex narrow, 0.18–0.22 (J) / 0.24–0.26 (♀) times as wide as head across eyes; frons with several reddish striae. Antenna pale brown; segment I with reddish, faint, small spots apically; segment II shorter than metafemur; apical half of segment II and apical 3/4 of each III and IV brown. Labium shiny pale brown, slightly exceeding apex of mesocoxa; segment I and apical 1/3 of segment IV dark reddish brown. Pronotum pale castaneous brown, partly irregularly and symmetrically maculate, with creamy brown posterior margin; collar yellowish brown, with several reddish, small spots; pleura castaneous, somewhat matte, with creamy yellow metathoracic scent efferent system; mesoscutum pale reddish brown; scutellum yellowish brown, with faint, brown stripe mesally. Hemelytron shiny pale brown, with dark brown, slash-like macula on median corium; inner half of clavus darkened; cuneus dark reddish brown, with creamy yellow apex; membrane pale smoky brown, semitransparent. Coxae castaneous brown; apical 1/3–1/2 of meso- and metacoxae pale brown ( Figs 18–19 View Fig View Fig ); legs pale brown; metafemur and metatibia castaneous brown; metatarsomere II as long as III ( Fig. 15H View Fig ); pretarsal structures as in Fig. 15G View Fig . Abdomen shiny castaneous brown. Male genitalia ( Figs 5A–C View Fig , 6D–E View Fig , 16A–C View Fig ): left paramere rather gradually tapered toward apex ( Figs 5A View Fig , 16B View Fig ); vesical spicules and lobal-sclerites short ( Figs 6D View Fig , 16C View Fig ). Female genitalia ( Figs 5D View Fig , 16D–G View Fig ): sclerotized ring elongate ovoid, relatively large ( Fig. 5D View Fig ).

Measurements. See Table 1.

Etymology. Named after a Japanese ‘samurai’ (warrior), Nagamasa Yamada (1590–1630), who emigrated to the old Siamese capital, Ayutthaya (the Kingdom of Ayudoya), and worked as a commander under King Songtham; a noun in the genitive case.

Biology. All specimens (including several teneral adults and final instar immature forms, Fig. 3B View Fig ) were collected from inflorescences of broadleaf trees of the family Fabaceae , such as Acacia sp. and Cassia sp. Based on collection records, a bivoltine life cycle is presumed for N. nagamasai sp. nov.

Distribution. Thailand (Phranakhon Si Ayutthaya).