Uchidella okamotoi (Uchida, 1936)

Watanabe, Kyohei, 2021, Taxonomic and Zoogeographic Study of the Japanese Phygadeuontinae (Hymenoptera, Ichneumonidae), with Descriptions of 17 New Species, Bulletin of the Kanagawa Prefectural Museum (Natural Science) 50, pp. 55-136 : 120-121

Uchidella okamotoi (Uchida, 1936)

(SJN: Okamoto-chibi-togari-himebachi)

( Figs 55A–E , 64G )

Leptocryptus marginatus Uchida, 1930: 335

Hemiteles (Itamus) okamotoi Uchida, 1936a: 13 .

Description. Female (n=9). Body length 5.6–7.0 mm. Body polished, covered with silver setae.

Head. Clypeus 1.9–2.0 times as wide as maximum length, finely and sparsely punctate, its anterior margin subtruncate, without teeth. Face finely punctate ( Fig. 55B ), flat. MSL 0.5–0.6 times as long as BWM. Frons finely punctate except for smooth area above antennal sockets. Gena and vertex finely punctate. OOL distinctly longer than POL and OD. POL almost as long as OD. Occipital carina complete, its lower end and joined with hypostomal carina at mandibular base. Upper tooth of mandible distinctly longer than lower tooth. Base of mandible flat. Antenna with 24–26 flagellomeres. FL III 3.3–4.0 times as long as maximum depth in lateral view.

Mesosoma. Lateral part of pronotum smooth. Epomia distinct and long. Mesoscutum densely and finely punctate. Notaulus distinct, fading our near center of mesoscutum ( Fig. 55D ). Scutellum largely smooth, with a lateral longitudinal carina except for apex ( Fig. 55D ). Mesopleuron smooth except for fine punctures on areas above and below speculum. Posterior transverse carina of mesosternum narrowly absent in front of mid coxae. Metapleuron finely punctate, with a complete juxtacoxal carina. Propodeal carinae almost complete ( Fig. 55E , 64G ). Median section of lateromedian longitudinal carina sometimes partly indistinct ( Figs 55E , 64G ). Area basalis usually distinct ( Figs 55E , 64G ). Area superomedia longer than wide, sometimes indistinct laterally ( Fig. 55E , 64G ). Postero-lateral corner of area dentipara weakly projected. Propodeum finely and sparsely punctate ( Fig. 55E ). Length of fore wing 4.3–4.8 mm. Areolet present ( Fig. 55A ). Vein 2m-cu of fore wing with two bullae. Nervellus subvertical, intercepted slightly behind the middle. Hind femur 5.3–5.6 times as long as maximum depth in lateral view. Hind TS I: II: III: IV: V = 2.0: 0.7–0.75: 0.5–0.55: 0.25: 0.3. Tarsal claws simple.

Metasoma. T I 3.1–3.5 times as long as maximum width, largely longitudinally striate except for smooth apex. Median dorsal carina of T I absent. Dorsolateral carina of T I complete but weak. T II almost as long as wide. T II to T VI densely and finely punctate. Ovipositor sheath 0.38–0.5 times as long as hind tibia. Ovipositor straight, with an obtuse nodus and without ventral teeth.

Coloration ( Figs 55A–E ). Head black. clypeus at least reddish brown apically. Scape, pedicel, base of FL I, mandible except for darkened apex, and palpi yellowish brown. Antenna brown except for yellowish brown area. Mesosoma and metasoma (excluding wings and legs) reddish brown. Dorsal surfaces of mesoscutum and propodeum more or less darkened. Scutellum reddish yellow. T I dark brown to blackish brown except for apex. T II to T VII sometimes partly darkened. Membranous part of metasomal sternites yellowish brown. Ovipositor yellowish brown. Wings hyaline. Veins yellowish brown to dark brown. Pterostigma dark brown to blackish brown except for pale base. Legs yellowish brown to reddish brown. Hind coxa, hind femur, base and apical part of hind tibia usually darker than other parts of legs.

Male (n=3). Similar to female. Antenna with 23–24 flagellomeres. FL 10 to FL 13 with a longitudinal tyloids. Body coloration slightly paler than female.

Materials examined. JAPAN: KPM-NK 82071 , F, Chiba Pref., Shiroi City, Ki , 26. VII. 2006, H. Suda leg. ; KPM-NK 82065 , M, Kanagawa Pref., Yokosuka City, Nagasawa , 13. VII. 2001, I. Kawashima leg. ; KPM-NK 82067 , M, Kanagawa Pref., Miura City, Koajiro , 9. VIII. 2001, I. Kawashima leg. ; KPM-NK 82072 , F, Kanagawa Pref., Hadano City, Mt. Koubou-yama , 9. X. 2006, H. Katahira leg. ; KPM-NK 82074 , F, ditto, 13. X. 2008, K. Watanabe leg. ; KPM-NK 82073 , F, Yamanashi Pref., Koushu City, Katsunuma Town, Ootaki-fudou , 4. VIII. 2007, K. Watanabe leg. ; KPM-NK 82066 , F, Kagoshima Pref., Mt. Kirishima , 15. VIII. 1953, H. Nagase leg. ; KPM-NK 82068 , M, Kagoshima Pref., Osumicho , 25. VI. 1980, H. Nagase leg. ; KPM-NK 82069 , F, Kagoshima Pref., Yakushima Is., Arakawa , 22. VII. – 22. VIII. 2006, T. Yamauchi leg. (MsT).

Distribution. Japan (Honshu, Shikoku, Kyushu, Yakushima Is.*, and Amamioshima Is.).

Bionomics. Unknown.

Remarks. This is the first record of this species from Yakushima Is.

Figures

Fig. 55. Uchidella okamotoi (Uchida, 1936), KPM-NK 82073, female from Japan ― A, dorsal habitus; B, head, frontal view; C, head, mesosoma, and metasoma, lateral view; D, head, mesoscutum and scutellum, dorsal view; E, propodeum, dorsal view.

Fig. 64. Surculus japonicus sp. nov. (A, KPM-NK 81861, holotype), Paraphylax elegans sp. nov. (B, KPM-NK 55078, holotype), Hemiteles japonicus sp. nov. (C, KPM-NK 55021, holotype), H. maculipterus sp. nov. (D, KPM-NK 55026, paratype), Charitopes gastricus (Holmgren, 1868) (E, KPM-NK 81963), Tropistes shimizui sp. nov. (F, KPM-NK 81833, holotype), Uchidella okamotoi (Uchida, 1936) (G, KPM-NK 82073), and Uchidella toichii sp. nov. (H, KPM-NK 82011, holotype), females from Japan ― A–H, propodeum,dorsal view.