Pleolophus setiferae (Uchida, 1936)

Pleolophus setiferae (Uchida, 1936) View in CoL

[SJN: Matsunoki-futo-togari-himebachi]

( Figs. 55A–G, 56A–E, 79V)

Microcryptus setiferae Uchida, 1936c: 118 .

Microcryptus annulaticrus Cushman, 1937: 32 .

Materials examined. JAPAN: [ Honshu ] SEHU, 1F (holotype), Tokyo, 19. X. 1935, M. Hamatake leg. (host: “ Neodiprion sertifera ”) ; KPM-NK 81297 , F, Nagano Pref., Kawakami Vil., Azusayama , 14. VI. 2015, K. Watanabe leg. ; NSMT, 2F & 2M, Shizuoka Pref., Nagaizumi , 25. III. 1937 (cocoon of Diprion nipponicus coll.) , IV. 1937 (em.) ; NSMT, 1F & 1M, ditto, 24–27. III. 1937 (cocoon of D. nipponicus coll.) , 29. III. 1937 (em.) ; NSMT, 1M, Shizuoka Pref., Nagaizumi , em. from D. nipponicus ; NSMT, 1M, no locality data, em. from D. nipponicus .

Description. Female (n = 5). Body densely punctate and polished; covered with setae; body length 7.9–8.8 mm.

Head 0.6 × as long as wide in dorsal view. Clypeus 1.8–2.0 × as wide as long; slightly convex in lateral view; punctate dorsally, smooth ventrally; lower margin slightly rounded in frontal view, blunt in lateral view. Face 0.35 × as long as minimum width; weakly convex medially, shallowly punctate laterally; ISP largely coriaceous laterally. Frons with pair of large smooth areas above antennal sockets. POL 1.6–1.9 × as OD. OOL 1.4–1.8 × as OD. Dorsal profile of gena slightly rounded in dorsal view; width gradually narrowing posteriorly ( Fig. 55D). Occipital carina complete. Malar space 1.4 × as long as basal width of mandible. Mandible flat at base; lower tooth equal in length of upper tooth. Antenna with 25 flagellomeres; not flattened and tapped. FL I 1.9–2.2 × as long as maximum depth in lateral view, 0.95 × as long as FL II.

Mesosoma. Pronotum rugulose ventrally ( Fig. 55E). Epomia absent. Mesoscutum with short and weak notaulus. Scutellum sparsely punctate (punctures on median part sparser than lateral parts); flat to slightly convex in lateral view. Mesopleuron without conspicuous smooth area around speculum; punctures partly united into groove-like longitudinal foveola ( Fig. 55E). Epicnemial carina present laterally and ventrally. Sternaulus deep in anterior 0.5 of mesopleuron. Metapleuron reticulate rugose; juxtacoxal carina absent or indistinct by rugae. Propodeum rugose or rugulose except for smooth area of area externa; anterior transverse carina absent; posterior transverse carina complete, inverted U-shaped ( Fig. 55F); lateromedian longitudinal carina largely indistinct; lateral longitudinal carina partly present; pleural carina complete; antero-lateral part of area basalis of propodeum without conspicuous smooth area ( Fig. 55F); area superomedia indistinct; apophysis weak and obtusely projected; spiracle oval. Fore wing length 6.2–6.25 mm. Areolet as long as maximum width; width gradually narrowing anteriorly; received vein 2m-cu at slightly beyond to middle ( Fig. 55B). Fore wing vein 1cu-a postfurcal to vein M&RS ( Fig. 55B). Nervellus subvertical; intercepted posterior to middle. Hind femur reticulate coriaceous; 4.0–4.3 × as long as maximum depth in lateral view. Tarsal claws simple.

Metasoma largely smooth. T I 1.35–1.4 × as long as maximum width; latero-median carina absent; dorso-lateral carina complete. T II 0.5 × as long as maximum width. Thyridium present; close to anterior margin of T II; flat to slightly depressed; ca. 2.0 × as wide as length. T II to T VI sparsely punctate. Ovipositor sheath 0.65–0.7 × as long as hind tibia, 1.05–1.25 × as long as T I. Ovipositor straight; apex sharp; apex of lower valve with teeth ( Fig. 79V).

Colouration ( Figs. 55A–G). Body (excluding wings) black to blackish-brown. Setae silver except for some blackish-brown setae on head and mesoscutum. FL V to FL X with white marking. Middle part of T VII with a white to yellowish brown marking. Wing slightly yellowish-brown hyaline. Veins and pterostigma blackish-brown to brown except for yellow wing base. Base of tibiae white. Ventral surface of flagellum, tibiae and fore and mid tarsi usually tinged with brown. Ovipositor brown.

Male (n = 5). Similar to female ( Figs. 56A–E). Body length 7.3–8.75 mm. Head 0.55 × as long as wide in dorsal view. Face 0.4–0.43 × as long as minimum width. POL 1.4–1.5 × as OD. OOL 1.4–1.9 × as OD. Malar space 1.0–1.1 × as long as basal width of mandible. Antenna with 26–27 flagellomeres; with tyloids on FL X to FL XV ( Fig. 56D). FL I 2.15–2.3 × as long as maximum depth in lateral view, 1.05–1.1 × as long as FL II. Hind femur 4.3–4.9 × as long as maximum depth in lateral view. Fore wing length 6.25–7.0 mm. T I 1.95–2.0 × as long as maximum width. T II 0.75–0.8 × as long as maximum width. Scape and pedicel each with ventral yellow marking. Face with pair of yellow markings along orbit. Mandible tinged with yellowish-brown except for teeth. Palpi yellowish-brown. Median part of collar and scutellum each with yellow marking. Tegula sometimes tinged with yellow. Fore and mid tibiae and tarsi largely tinged with yellowish-brown. Base of tibiae white to ivory. Tibial spurs ivory.

Distribution. Japan (Honshu), China, and Korea.

Bionomics. Host: Diprion nipponicus Rohwer, 1910 ; Neodiprion sertifer (Geoffroy, 1785) (“ serifera ” is misspelling) ( Hymenoptera , Diprionidae ) ( Cushman, 1937).