Javra minuta, Watanabe, 2025

Javra minuta sp. nov.

[New SJN: Toyama-kuro-togari-himebachi]

( Figs. 34A–H, 79E)

Type series. Holotype: JAPAN, KPM-NK 102805 ,

F, Honshu, Toyama Pref., Nanto City, Togamura-kamimomose, 15–29. IX. 2009, M. Watanabe leg. (MsT). Paratype: JAPAN, KPM-NK 84975 , F, Honshu , Toyama Pref., Toyama City , Arimine, Jurodani, 15–22. IX. 2009, M. Watanabe leg. (MsT) .

Description. Female (n = 2). Body polished ( Figs. 34A, E, F, H); covered with setae; body length 4.55–4.75 (HT: 4.55) mm.

Head 0.6–0.63 (HT: 0.63) × as long as wide in dorsal view. Clypeus 2.0–2.1 (HT: 2.0) × as wide as long; slightly convex in lateral view; sparsely punctate; lower margin slightly rounded in frontal view, sharp in lateral view. Face 0.5 × as long as minimum width; coriaceous; nearly flat medially. Anterior tentorial pit large. Frons slightly concave above antennal sockets; slightly coriaceous and sparsely punctate except for area above antennal sockets. POL 1.2–1.4 (HT: 1.2) × as OD. OOL 1.4–1.5 (HT: 1.5) × as OD. Gena and vertex finely punctate. Dorsal profile of gena straight in dorsal view; width abruptly narrowing posteriorly ( Fig. 34D). Occipital carina complete. Malar space 1.1–1.2 (HT: 1.1) × as long as basal width of mandible. Mandible flat at base; lower tooth equal in length of upper tooth. Antenna with 23–24 (HT: 23) flagellomeres; not flattened and tapped. FL I 4.6–5.45 (HT: 5.45) × as long as maximum depth in lateral view, 1. 25–1.4 (HT: 1.25) × as long as FL II.

Mesosoma. Pronotum sparsely and finely punctate; rugulose ventrally in paratype; ISP smooth. Epomia short; dorsal end situated slightly above collar. Mesoscutum sparsely and finely punctate; ISP smooth. Notaulus weak; posterior end not reaching centre of mesoscutum. Scutellum largely smooth; convex in lateral view. Mesopleuron largely smooth with fine and sparse punctures; partly obliquely striate in paratype; with conspicuous small smooth area around speculum ( Fig. 34E); sometimes largely striate ( Fig. 34F; in paratype). Epicnemial carina present laterally and ventrally. Sternaulus deep in anterior 0.8 of mesopleuron. Metapleuron largely smooth with fine and sparse punctures; with complete juxtacoxal carina. Propodeum largely smooth with fine and sparse punctures ( Fig. 34H); with all carinae except for lateromedian longitudinal carina weak and partly indistinct; area superomedia partly defined, longer than wide; apophysis short; apex obtuse; spiracle oval. Fore wing length 4.7 mm. Areolet wider than long; width gradually narrowing anteriorly; received vein 2m-cu basal to middle ( Fig. 34G). Fore wing vein 1cu-a interstitial to vein M&RS ( Fig. 34G). Nervellus subvertical; intercepted posterior to middle. Hind femur reticulate coriaceous; 5.1–5.2 (HT: 5.2) × as long as maximum depth in lateral view. Tarsal claws simple.

Metasoma finely and sparsely punctate; ISP smooth. T I 2.95 × as long as maximum width; longitudinally shallowly foveolate partly; latero-median carina absent; dorso-lateral carina present but obscured posteriorly. T II 0.9 × as long as maximum width. Thyridium present; somewhat distant from (by more than length of thyridium) anterior margin of T II; flat to slightly depressed; ca. 1.0 × as wide as length. Ovipositor sheath 0.88–0.93 (HT: 0.93) × as long as hind tibia, 1.66–1.75 (HT: 1.75) × as long as T I. Ovipositor straight; apex sharp; apex of lower valve with teeth ( Fig. 79E).

Colouration ( Figs. 34A–H). Body (excluding wings) black to blackish-brown. Setae silver. Mandible except for teeth, clypeus, ventral surfaces of scape and pedicel, ventral surface of apical part of flagellum, postscutellum, and metasomal tergites except for T I tinged with brown to reddish-brown. Palpi, scutellum, and membranous part of metasomal sternites ivory. FL VII to FL X with white markings. Tegula and posterior margins of T II and T III yellowish-brown. Fore and mid legs reddish-yellow except for ivory coxae, trochanters, and trochantelli. Hind leg blackish-brown; trochanter, trochantellus, tibia except for apical part, and tibial spurs paler than other part. Thyridium and ovipositor reddish-brown. Wings hyaline. Veins and pterostigma brown except for yellowish-brown to yellow wing base.

Male. Unknown.

Distribution. Japan (Honshu).

Bionomics. Unknown.

Etymology. The specific name is from the Latin “ minuta ” (small), referring to the relatively small body size in Japanese species.

Remarks. This species resembles J. teranishii in the yellow scutellum but can be distinguished by the polished body (body largely matt in J. teranishii ) and the fore and mid coxae, trochanters, and trochantelli white (blackish-brown to black in J. teranishii ). The character states of holotype and a paratype relatively large in the genus especially FL I and mesopleuron, but I conclude that is intraspecific variation based on the collecting data and other character states.