Allophroides watanabei Khalaim, 2022

Khalaim, Andrey I., 2022, Tersilochinae (Hymenoptera: Ichneumonidae) of Japan: two new species, a new combination and 23 new country records, Zootaxa 5174 (4), pp. 301-330 : 302-304

Allophroides watanabei Khalaim , sp. nov.

( Figs 1–9 )

Material examined. Holotype female ( EUM) Japan, Hokkaido I., Sapporo, Hitsujigaoka , 43°00’N, 141°24’E, Malaise trap, 3–10.V.2007, coll. K. Konishi.

Paratype. JAPAN. 1 ♀ ( ZISP) same data as holotype, but 43°00’11”N, 141°24’55”E, 16–23. V.2011.

Description. Female. Body length 4.7 mm. Fore wing length 3.7 mm.

Head, in dorsal view, roundly constricted posterior to eyes ( Fig. 3 ); gena 0.9–0.95× as long as eye width. Eyes with short sparse setae ( Fig. 2 ). Clypeus about 3.0× as broad as long, in front view lenticular, with ventrolateral margins distinctly impressed ( Fig. 2 ), separated from face by deep and sharp furrow; clypeus with sparse shallow punctures, convex and finely granulate in upper 1/3, flat and polished in lower 2/3. Palpi formula 4+3. Mandible robust, weakly tapered in basal 0.3 and with upper and lower margins subparallel in apical 0.7; upper tooth slightly longer than the lower. Malar space 0.8–0.9× as long as basal mandibular width. Antennal flagellum ( Fig. 6 ) slightly tapered towards apex, with 23–25 flagellomeres; basal and median flagellomeres slightly elongate, subapical flagellomeres as long as broad; flagellomeres 4 to 6 (or 7) with distinct subapical finger-shaped structures on outer surface. Face with weak elongate median prominence. Face and frons distinctly granulate, dull, impunctate or with very fine inconspicuous punctures. Vertex and gena granulate, with fine and sparse punctures. Occipital carina complete.

Mesoscutum finely and shallowly granulate, dull to weakly shining, with fine and sparse punctures. Notaulus with strong irregular wrinkles on anterolateral side of mesoscutum ( Figs 3, 4 ). Scutellum with lateral longitudinal carinae present at its front 0.3 ( Fig. 8 ). Mesopleuron finely punctate on nearly smooth and shining background in upper part and ventrally, strongly granulate (partly with irregular wrinkles), impunctate and dull in lower part, with irregular wrinkles peripherally ( Fig. 4 ). Epicnemial carina with upper end distinctly curved to reach front margin of mesopleuron. Foveate groove moderately deep, weakly curved, extending in posterior 0.8 of mesopleuron, with strong transverse wrinkles ( Fig. 4 ). Propodeal spiracle separated from pleural carina by about 1.5× diameter of spiracle ( Fig. 4 ). Propodeum almost entirely with rather strong irregular wrinkles; on the apical area wrinkles are mostly transverse ( Fig. 8 ); basal area broad, transverse (in holotype) or quadrate (in paratype), about 0.3× as long as apical area ( Fig. 8 ); transverse carina strong laterally and indistinct mediodorsally, thus the basal area is not clearly delineated posteriorly ( Fig. 8 ); apical area somewhat impressed; apical longitudinal carinae strong posteriorly and indistinct (because of irregular wrinkles) anteriorly.

Fore wing ( Fig. 7 ) with second recurrent vein (2m-cu) distinctly postfurcal, unpigmented in anterior 0.55 and distinct in posterior 0.45. Intercubitus (2rs-m) short and thick, shorter than abscissa of cubitus between intercubitus and second recurrent vein (abscissa of M between 2rs-m and 2m-cu). First abscissa of radius (Rs+2r) weakly curved, as long as width of pterostigma. Pterostigma broad, subtriangular. First and second abscissae of radius (Rs+2r and Rs) meeting at slightly acute angle. Metacarpus (R1) not reaching apex of fore wing. Hind wing with nervellus (cu1&cu-a) weakly reclivous. Legs moderately slender. Tarsal claws not pectinate.

First tergite 2.1× as long as posteriorly broad, strongly longitudinally striate dorsally and laterally ( Fig. 5 ), with only posterior dorsal margin smooth ( Fig. 9 ); first tergite depressed, in cross-section centrally trapeziform (lateral carinae strong in anterior half of tergite, petiole dorsally flat). Glymma large and deep, situated in anterior 0.35–0.4 of tergite, joining by strong furrow to ventral part of postpetiole ( Fig. 4 ). Second tergite distinctly transverse, 0.85× as long as anteriorly broad ( Fig. 9 ). Thyridial depression small, oval, transverse. Ovipositor robust, weakly and evenly bent upwards, with two dorsal subapical teeth and several distinct teeth ventrally ( Fig. 5 ); sheath almost twice as long as first tergite ( Fig. 1 ).

Head, mesosoma and first tergite of metasoma black; lower 2/3 of clypeus reddish black. Mouthparts yellow, palpi brown. Mandible predominantly brownish yellow, reddish at base and with teeth reddish black. Antenna black, apical margins of scape and pedicel pale. Tegula brownish black, yellowish apically. Wings slightly infumate with brown. Pterostigma dark brown (in holotype) or brown (in paratype), with yellowish markings proximally and distally. Legs with all coxae black, reminder yellowish brown to dark brown. Metasoma posterior to first tergite dark brown.

Male. Unknown.

Etymology. The species is named in honor of the Japanese expert in Ichneumonidae (Hymenoptera) , Kyohei Watanabe (KPM-NK).

Distribution. Japan (Hokkaido I.).

Comparison. The new species may easily be recognized by its robust ovipositor with two distinct dorsal subapical teeth ( Fig. 5 ), antennal flagellum with 23–25 flagellomeres ( Fig. 6 ), and simple tarsal claws. Similar ovipositor is known in the European A. boops (Gravenhorst) , but in this species the ovipositor is much shorter (sheath about as long as first tergite), flagellum with 14–15 flagellomeres, and tarsal claws distinctly pectinate.

Figures

FIGURES 1–5. Allophroides watanabei sp. nov., holotype, ♀: 1—habitus (without antennae), lateral; 2—head, front; 3—head and mesoscutum, dorsal; 4—mesosoma and base of metasoma, lateral; 5—apex of ovipositor, lateral.

FIGURES 6–9. Allophroides watanabei sp. nov., holotype, ♀: 6—antenna, front; 7—wings; 8—posterior part of mesosoma, dorsal; 9—postpetiole and second tergite, dorsal.