Apechthis taiwana Uchida, 1928

Watanabe, Kyohei & Takasuka, Keizo, 2013, Description of Apechthis cantika sp. n. from Sulawesi Is., Indonesia with redescription of the holotype of A. taiwana Uchida (Hymenoptera, Ichneumonidae, Pimplinae), Journal of Hymenoptera Research 31, pp. 105-117 : 110-112

Apechthis taiwana Uchida, 1928 Figs 17 , 23 , 24

Apechthis taiwana Uchida, 1928: 49.

Taiwatheronia mahasenae Sonan, 1936: 256.

Remarks.

Although this species also has a yellow body and is found in the Oriental region, China and Taiwan ( Yu et al. 2012), indicating a close relationship with Apechthis cantika sp. n., published descriptions are unsatisfactory for identification and comparison with undescribed species. We thus redescribe the holotype of Apechthis taiwana below.

Redescription of holotype.

Female: body 10.5 mm long, fore wing 10.0 mm long. Head polished, punctate, 0.6 times as long as wide in dorsal view; clypeus 0.6 times as long as wide, flat excluding weakly concave apical half, smooth, finely punctate along apical margin and supraclypeal suture; face 0.7 times as long as wide, finely punctate, medially with weak longitudinal convexity; frons smooth, weakly concave above antennal sockets; malar space 0.2 times as long as basal width of mandible; basal portion of mandible flat; vertex and gena minutely and finely punctate; OOL/OD 0.6; POL/OD 1.1; antenna with 25 flagellomeres, terminal segment with columnar projections; flagellomere I 1.3 times as long as flagellomere II.

Mesosoma polished, sparsely punctate; pronotum laterally largely smooth; mesoscutum finely, densely punctate; anterior half of mesopleuron strongly convex; upper end of epicnemial carina reaching half height of pronotum ( Fig. 17 ); episternal scrobe large; lower division of metapleuron largely smooth except along pleural carina; propodeum smooth medially, densely punctate laterally, with pleural carina and posterior part of lateral longitudinal carina; lateromedian longitudinal carina present only as basal tubercle; other carinae absent.

Legs: claws of all legs with basal teeth; hind femur 3.0 times as long as deep.

Wings: fore wing with Cu-a distad Rs+M by 0.4 times length of Cu-a, with rectangular areolet receiving 2 m-cu near apical 1/3; hind wing with distal abscissa of Cu 1 much closer to 1 A than to M, basal abscissa of Cu 1 0.3 times as long as cu-a; 11 (left) or 10 (right) distal hamuli.

Metasoma polished, densely punctate ( Fig. 24 ); tergite I 1.1 times as long as maximum width, with pair of strong median convexities, convexity nearly angulate in lateral view; tergite II 0.8 times as long as maximum width, gastrocoeli and posterior margin smooth; posterior margin of tergites III to VII smooth; lower valve of ovipositor with at least 10 teeth (apex concealed by dirt); ovipositor sheath 0.9 times as long as hind tibia.

Colour ( Figs 23, 24 ). Yellow; apex of mandible, small median spot on posterior margin of mesoscutum, scuto-scutellar groove, small spot on mesopleuron near subtegular ridge and episternal scrobe, anterior margin of propodeum, pair of small spots on posterior margin of propodeum, apices of claws (including teeth) of legs, wing veins excluding stigma, anterior band of metasomal tergite I, pair of anterior spots on tergites II to VI and ovipositor sheath (apex concealed by dirt) black; antenna, ocellar triangle, three longitudinal stripes on mesoscutum, submetapleural carina, base of mid femur, apex of hind coxa, base and apex of hind femur, base and apical half of hind tibia, stigma excluding black margins, tarsal claws, ovipositor brown; each black area more or less framed by brown area; wings yellowish-hyaline.

Specimen examined. Holotype ( Fig. 25 ): Female, "Formosa, Kikuchi" (label 1), "Yakanron, 18/II. 1927" (label 2), "A. taiwana n." (label 3), "Type Matsumura" (label 4), apical parts of right antenna and left hind tarsus, and left fore wing lost (SEHU).

Figures

Figures 5 - 17. Holotypes (female) of Apechthis cantika sp. n. (5, 7 - 16) and Apechthis taiwana Uchida (17), paratype (male) of Apechthis cantika sp. n. (6) 5 Head, frontal view 6 left flagellum, lateral view 7, 8 apex of flagellum, dorsal (7) and lateral (8) views 9, 17 anterior half of mesopleuron, lateral view 10 - 12 left fore- (10), mid- (11) and hind (12) tarsal claw, lateral view 13 fore wing areolet 14, 15 propodeum and metasomal tergites I and II, dorsal (14) and lateral (15) views; 16 apex of ovipositor, lateral view.

Figures 23 - 25. Holotype of Apechthis taiwana Uchida. 23 habitus, dorso-lateral view 24 T 1 - T 3, dorso-lateral view 25 labels.