Amphirhachis tertia ( Momoi, 1970 )

Lee, Gyu Won Kang and Jong Wook, 2022, New record of genus Amphirhachis Townes (Hymenoptera: Ichneumonidae: Banchinae) from South Korea, Journal of Species Research 11 (1), pp. 67-70 : 69

Amphirhachis tertia ( Momoi, 1970)

Šǧḑṷņḝṣfinjḏ (ṉḡ)

Fintona tertia Momoi, 1970: 357 . Type: female, TL: Japan-Amamioshima; TD: MOMOI.

Amphirhachis quadripunctata Kuslitzky, 1995: 674 . Type: female, TL: Kazakhstan; TD: ZI.

Diagnosis. Clypeus strongly swelling ( Fig. 1C ), with long and thin hairs. Mandible strongly stout, upper tooth slightly longer than lower tooth. Malar space approximately 0.8 times as long as basal mandibular width. Antenna with 50 flagellomeres; first flagellomere 1.8 times as long as second flagellomere. Mesoscutum strongly convex anteriorly and entirely flat, densely regularly punctured. Propodeum in dorsal view rather stout; closely punctured tending to rugose partly with long and dense hairs; only posteri- or transverse carina weakly present only medially ( Fig. 1E ). Fore and mid tarsal claws pectinated. Ratio of hind tarsomeres are 7.5: 3.5: 2.5: 1.0: 2.0. Fore wing with rhombic areolet elongately petiolate ( Fig. 1G ). Hind wing with 11 hamuli. Metasoma rather slender with coarse and dense punctures. First tergite 2.0 times as long as apical width, without lateral longitudinal carina ( Fig. 1F ). Second tergite coriaceous, as long as apical width ( Fig. 1H ). Ovipositor sheath 0.25 times as long as metasoma.

Color. Black with yellow spots ( Fig. 1A ). Paraocular area broadly yellow ( Fig. 1B ), especially yellow line of facial orbit extended to median part broadly ( Fig. 1C ). Clypeus yellow with brown apical margin. Mandible yellow with brown subapically and black mandibular teeth. Genal orbit and malar space entirely yellow. Antenna dark brown with median white band; scape with small yellow spot ventrally. Mesosoma black with yellow spots ( Fig. 1D ). Whole anterior edge of pronotum broadly yellow; upper posterior corner yellow. Mesopleuron black with yellow marks on upper margin longitudinally, medially, lower posteriorly. Upper top of mesepimeron yellow. Mesoscutum with large semi-triangular yellow spot in anterior of both sides, and with a big yellow spot medially. Scutellum entirely yellow with black longitudinal mark. Propodeum in dorsal view, yellow spot in each anterior and posterior both side, posterior one larger than former one ( Fig. 1E ). Fore and mid legs entirely yellow; coxae bright yellow with brown spots dorsally. Hind coxa black; trochanter and femur brown with brown apically; tibia yellow with brown basally and apically; tarsus yellow with brown basally; tarsal claw brown. All tergites black with yellow apical margin ( Fig. 1H ). First tergite black with yellow basal half ( Fig. 1F ).

Specimens examined. 1♂, CB, Danyang-gun, Danyangeup, Cheondong-ri , Sobaeksan , Bukbusa , 8vi-6.vii.2005; 1$, CN, Cheonan-si, Mt. Gwangdeoksan , 16-18.vi.1994, JI Kim ; 1♂, GB, Yeongju-si, Buseok-myeon, Ingok-ri , 6.viii-7.ix.2016, YJ Kim; 1$, GN, Sancheong-gun, Yupyeong, 10-14.vii.1978, BS Kim; 1$, JB, Yupyeong, 10- 14.vii.1978, BS Kim ; 1♂, Seoul, Nowon-gu, Mt. Suraksan , 31.v.1998, MK Lee .

Distribution. South Korea (new record), Japan, Russia (Primorsky Kray), Kazakhstan.

Figures

Fig. 1. Amphirhachis tertia (Momoi), A. Habitus in lateral view; B. Head in dorsal view; C. Head in frontal view; D. Mesosoma in lateral view; E. Propodeum in dorsal view; F. First tergite in dorsal view; G. Wings (left); H. Metasoma in dorsal view. Scale bars:A, G =1.0 mm; B, C, and E=0.2 mm; D, F, and H=0.5 mm.