Antrusa dilata, Papp, 2007

Papp, J., 2007, Braconidae (Hymenoptera) From Korea Xxii. Subfamily Alysiinae, Acta Zoologica Academiae Scientiarum Hungaricae 53 (1), pp. 1-38 : 26-27

Antrusa dilata sp. n. ♀

( Figs 78–83 )

Material examined (1 ♀). – Female holotype: Korea, prov. South Pyongan , Pyongyan , city Park, 4 August 1971, leg. S. HORVATOVICH et J. PAPP (loc. no. 137). – Holotype is deposited in the Hungarian Natural History Museum (Department of Zoology), Budapest, Hym. Typ. No. 10973. Holotype is in good condition, fore and middle legs glued close near to mesosoma, specimen itself glued on a pointed card by its left-lateral half of mesosternum + left-lower part of mesopleuron .

Etymology. – The species name “dilata” refers to the distinctly transverse head in dorsal view.

Description of the female holotype. – Body 2.1 mm long. Antenna one-third longer than body and with 26 antennomeres. First flagellomere 3.6 times, middle flagellomeres 2.2 times and penultimate flagellomere twice as long as broad; first flagellomere a bit longer than second flagellomere. – Head in dorsal view ( Fig. 78 ) transverse, twice as broad as long, eye 1.4 times as long as temple, temple rounded. OOL almost twice as long as POL. Eye in lateral view 1.7 times as high as wide, temple 0.8 times as wide as eye. Mandible 1.65 times length to breadth between upper and lower teeth, upper and lower teeth rounded (see arrows in Fig 79 ), middle tooth spiky. Head polished.

Mesosoma in lateral view 1.4 times as long as high, polished. Pronope present. mesoscutum hairy, laterally bare; mesoscutal dimple shallow, i.e. less distinct. Precoxal suture missing. Propodeum uneven, laterally subrugulose-uneven, subshiny. – Hind femur 5.5 times as long as broad distally ( Fig. 80 ). Hind tibia slightly longer than hind tarsus. Hind basitarsus as long as tarsomeres 2–3 and one-third of 4th tarsomere combined.

Fore wing distinctly one-third longer than body. Pterostigma ( Fig. 81 ) cuneiform and almost parallel-sided, 6.6 times as long as wide, issuing r near to its base, r a bit longer than width of pterostigma. 1–R1 one-fourth shorter than length of pterostigma. First subdiscal cell short, distally close, CU1a issuing medially ( Fig. 82 ).

First tergite ( Fig. 83 ) short and broad, 1.25 times as long as broad behind, pair of spiracles at middle of tergite, tergite up to spiracles clearly broadening, beyond them parallel-sided; pair of keels weak, converging and merging into fine striation of tergite. Tergites 2–3 just shorter than first tergite, together with further tergites polished. Ovipositor sheath short, in lateral view as long as hind tarsomeres 3–4 combined.

Head, mesosoma and first tergite brownish black, metasoma light brown (or yellowish brown). Scape + pedicel brownish yellow, flagellum brownish greyish. Mandible yellow, palpi pale yellow. Tegula yellow. Legs yellow, coxae + trochanters pale yellow. Wings hyaline, pterostigma and veins brownish yellow.

Male and host unknown.

Distrtibution: Korea.

The new species, Antrusa dilata , is nearest to A. lathyri (GRIFFITHS) considering their relatively large corporal size, broad petiole (or first tergite) and fairly dense hairs of second tergite; the two species are distinguished by the following features:

1 (2) Propodeum rugose. Head in dorsal view ( Fig. 84 ) less transverse, 1.7–1.8 times as broad as long, eye slightly longer. First tergite evenly broadening postertiorly, second tergite basally striolate ( Fig. 85 ). Upper tooth of mandible spiky, lower tooth more rounded ( Fig. 86 , see arrows). Precoxal suture wide and rugose-costate. Hind femur relatively thick, 4.2 times as long as broad distally ( Fig. 87 ). ♀♂: 2.7–2.9 mm. – Germany, Hungary A. lathyri ( GRIFFITHS, 1984) comb. n.

2 (1) Propodeum uneven, laterally subrugulose-uneven, subshiny. Head in dorsal view ( Fig. 78 ) twice as broad as long, eye 1.6 times as long as temple. First tergite beyond pair of spiracles parallel-sided, second tergite polished ( Fig. 83 ). Upper and lower teeth of mandible rounded ( Fig. 79 , see arrows). Precoxal suture mising. Hind femur less thick, 5.5 times as long as broad distally ( Fig. 80 ). ♀: 2.1 mm. – Korea A. dilata sp. n.

Figures

Figs 78–87. 78–83. Antrusa dilata sp. n.: 78 = head in dorsal view, 79 = mandible, 80 = hind femur, 81 = distal part of right fore wing, 82 =first subdiscal cell of right fore wing, 83 = tergites 1–3 with indication of the sculpture of first tergite.– 84–87.Antrusa lathyri (GRIFFITHS): 84 = head in dorsal view, 85 = tergites 1–3 with indication of the sculpture of tergites 1–2, 86 = mandible, 87 = hind femur