Diatora lissonota ( Viereck, 1912 )

Watanabe, Kyohei, 2022, Distribution Records and Re-descriptions of Some Japanese Species of the Subfamily Phygadeuontinae (Hymenoptera, Ichneumonidae), Bulletin of the Kanagawa Prefectural Museum (Natural Science) 51, pp. 61-72 : 62-63

Diatora lissonota ( Viereck, 1912)

(SJN: Okinawa-mame-togari-himebachi)

( Figs 1A–D )

Microtoridea lissonota Viereck, 1912: 150 . Zaraparaphylax perinae Viereck, 1913: 647 . Microtoridea secunda Cushman, 1934: 1 .

Hemiteles guamensis Fullaway, 1946: 223 .

Description. Female (n=1). Body length 3.7 mm. Body polished, covered with silver setae.

Head 0.57 times as long as wide in dorsal view. Clypeus 0.5 times as wide as maximum length, sparsely punctate, its anterior margin thin. Face densely punctate laterally, punctate medially. Length of malar space 0.95 times as long as basal width of mandible. Frons, gena, and vertex sparsely punctate. OD: POL: OOL = 0.5: 0.75: 0.7. Occipital carina complete except for dorsal part narrowly absent, its lower end joined with hypostomal carina distant from mandibular base. Upper tooth of mandible slightly shorter than lower tooth. Base of mandible flat, with a weak transverse concavity near base. Antenna with 19 flagEllomErEs, subapical part not widEnEd. LEngth of FL I 5.0 times as maximum depth of FL I in lateral view and 1.05 times as long as length of FL II.

Mesosoma. Upper side of collar with a weak median carina. Lateral part of pronotum sparsely punctate. Epomia present. Mesoscutum smooth ( Fig. 1C ), with a few, very sparse punctures. Notaulus distinct and sharp, its posterior end beyond the centre of mesoscutum. Scutellum smooth, with a few, sparse punctures, without a lateral longitudinal carina except for base. Mesopleuron covered with fine longitudinal striae and fine punctures except for smooth area on speculum. Epicnemial carina present laterally, its dorsal end not reaching anterior margin of mesopleuron. Sternaulus complete. Posterior transverse carina of mesosternum largely absent in front of middle coxa. Metapleuron punctate, with a weak, complete juxtacoxal carina. Propodeal carinae and areas complete. Postero-lateral corner of area densipara not projected. Area basalis wider than area superomedia.Area superomedia slightly wider than long, receiving lateral section of anterior transverse carina near the anterolateral corner (thus shape of area superomedia rectangle). Length of fore wing 3.0 mm. Areolet absent. Vein 1cu- a interstitial to vein M&RS. Nervellus subvertical, intercepted near middle. Hind femur 3.9 times as long as maximum depth in lateral view. Hind TS I: II: III: IV: V = 2.0: 0.8: 0.6: 0.3: 0.5. Tarsal claws simple.

Metasoma. T I to T VII smooth ( Fig. 1D ), with a few, finE puncturEs. T I 2.0 timEs as long as maximum width. Dorso-lateral carina of T I present except for posterior part. T II 0.55 times as long as maximum width. Ovipositor sheath 1.0 times as long as hind tibia. Ovipositor straight, with a nodus and ventral teeth.

Coloration ( Figs. 1A–D ). Body (excluding wings and legs) black to blackish brown. Mandible except for apex, postero-dorsal corner of pronotum, tegula, and membranous part of metasomal sternites yellow. Scape, pedicel, and ovipositor yellowish brown. Flagellum more or less tinged with brown. Wings hyaline. Veins and pterostigma brown to yellowish brown except for yellow wing base. Legs yellowish brown. Fore coxa and fore and mid trochanters and trochantelli yellow. Base and apex of hind tibia darkened.

Male. Not examined in this study.

Material examined. JAPAN: KPM-NK 81410, F, Kagoshima Pref., Tokunoshima Is., Tokunoshima Town, Kedoku , 20. V. 2008, K. Watanabe leg.

Distribution. Japan (Tokunoshima Is. and Okinawajima Is.); China, Guam, India, Malaysia, Palau, Philippines, Taiwan, and Truk Island.

Bionomics. Unknown in Japan. According to Yu et al. (2016), some lepidopterous and braconid hosts are recorded in other countries.

Remarks. KPM-NK 81410 has been compared with a specimen deposited in MNHAH (1 F, Taiwan, Hsien, III. 1966, K. Yano & H. Kajita leg., det. by S. Momoi). By the result of the comparison, no noteworthy morphological differences were observed. In Japan, only a single male collected from Okinawa Island was recorded ( Momoi, 1970). Therefore, the KPM-NK 81410 is the second record of this spEciEs from Japan. This is also thE first rEcord of this species from Tokunoshima Island.

Figures

Fig. 1. Diatora lissonota (Viereck, 1912), female, KPM-NK 81410. A: lateral habitus; B: head, frontal view; C: head, mesoscutum, and scutellum, dorsal view; D: T II to T IV, dorsal view.