Areotetes striatiferus Li & van Achterberg

Li, Xi-Ying, Achterberg, Cornelis van & Tan, Ji-Cai, 2013, Revision of the subfamily Opiinae (Hymenoptera, Braconidae) from Hunan (China), including thirty-six new species and two new genera, ZooKeys 268, pp. 1-186 : 26-28

Areotetes striatiferus Li & van Achterberg sp. n. Figs 52-62

Type material.

Holotype, ♀ (ZUH), "S. China: Hunan, nr Zhangjiajie, Badagong Mts, Tian Ping Mt., 9-13.VII.2009, 550 m, Xi-Ying Li, RMNH’10”. Paratype, ♂ (RMNH), same label data.

Diagnosis.

Second metasomal tergite striate medially (Fig. 56); apical third of antenna of ♀ partly pale yellowish (Fig. 61), of ♂ dark brown; face brownish-yellow and head dorsally largely dark brown; frons with small pit between sockets and no depressions above antennal sockets; medio-posterior depression of mesoscutum small, round (Fig. 55); scutellar sulcus finely crenulate; precoxal sulcus narrowly crenulate (Fig. 52); propodeum areolate and with smooth areas (Fig. 56); vein 3-SR of fore wing slightly curved and about 2.5 times as long as vein 2-SR; vein m-cu of fore wing gradually merging into vein 2-CU1; first metasomal tergite sparsely sculptured (Fig. 56).

Description.

Holotype, ♀, length of body 1.8 mm, of fore wing 2.2 mm.

Head. Antenna with 24 segments and 1.4 times as long as fore wing; length of third segment 1.3 times fourth segment, length of third, fourth and penultimate segments 5.0, 4.0 and 2.6 times their width, respectively (Fig. 61); length of maxillary palp 1.3 times height of head; labial palp segments elongate; occipital carina moderately close to hypostomal carina and dorsally absent (Fig. 62); median groove behind stemmaticum obsolescent; hypostomal carina narrow; length of eye in dorsal view 5.5 times temple; frons flat and glabrous medially, smooth and laterally convex and largely glabrous; face smooth, medially elevated; width of clypeus twice its maximum height and 0.45 times width of face, clypeus convex, smooth and its ventral margin not differentiated and concave (Fig. 58); hypoclypeal depression medium-sized (Fig. 58); mandible slightly convex and with fine ventral carina (Fig. 62).

Mesosoma. Length of mesosoma 1.5 times its height; dorsal pronope absent; pronotal side smooth, but medial groove indistinctly crenulate, with ventral oblique carina posteriorly and posterior groove obsolescent (Fig. 52); epicnemial area smooth dorsally; precoxal sulcus only medially distinctly impressed, with short crenulae (Fig. 52); rest of mesopleuron smooth; pleural sulcus smooth; mesosternal sulcus narrow and finely crenulate; notauli absent on disc, except for a short largely smooth part anteriorly (Fig. 55); mesoscutum glabrous; medio-posterior depression of mesoscutum small, deep, round in a shallow linear depression (Fig. 55); scutellar sulcus finely crenulate; scutellum smooth and flat; dorsal surface of propodeum largely smooth except for a medio-longitudinal carina and a moderately developed transverse carina behind it, posteriorly areolate (Fig. 56).

Wings. Fore wing (Fig. 53): pterostigma nearly elliptical; 1-R1 reaching wing apex and 1.5 times as long as pterostigma; r:3-SR:SR1 = 1:25:43; 2-SR:3-SR:r-m = 10:25:6; r widened; 1-M nearly straight; SR1 weakly curved; m-cu slightly postfurcal; cu-a slightly postfurcal and 1-CU1 widened; first subdiscal cell closed, CU1b short; apical third of M+CU1 sclerotized. Hind wing (Fig. 54): M+CU:1-M:1r-m = 21:20:9; cu-a straight; m-cu absent.

Legs. Length of femur, tibia and basitarsus of hind leg 3.9, 11.4 and 6.3 times as long as wide, respectively (Fig. 60); setae of hind femur long and of tibia moderately long; hind tibia with a short nearly straight carinula basally (Fig. 59).

Metasoma. Length of first tergite 1.4 times its apical width, its surface evenly convex medially and with few oblique costae and dorsal carinae united in its anterior 0.3 and absent behind it (Fig. 56); second tergite medially longitudinally costate striate (Fig. 56); second suture finely crenulate and not impressed (Fig. 56); third and following tergites smooth and partly desclerotized; length of setose part of ovipositor sheath 0.09 times fore wing and 0.25 times hind tibia (Figs 52, 57).

Colour. Blackish-brown; apical third of antenna pale (5 penultimate segments pale yellowish, 3 apical segments brownish; Fig. 61); palpi, mandible, malar space, tegulae, legs (especially coxae, rest mostly brownish-yellow), apex of third-seventh tergites and metasoma baso-ventrally pale yellowish; pedicellus brown; face, temple, orbita, scapus, side of pronotum ventrally, propleuron and area below precoxal sulcus yellowish-brown; pterostigma and veins mainly brown; wing membrane subhyaline.

Variation. Male paratype has length of fore wing 2.0 mm, and of body 1.7 mm; antenna with 21 segments, 1.3 times as long as fore wing and dark brown except for yellowish scapus; medio-posterior depression of mesoscutum comparatively large and elliptical.

Molecular data. None.

Distribution.

*China (Hunan).

Biology.

Unknown.

Etymology.

Name derived from “striatus” (Latin for “striated”) and “fero” (Latin for “carrying”), because of the coarsely striate second metasomal tergite.

Notes.

Does not run well in the key by Chen and Weng (2005) to any species of the group with a carinula of the hind tibia. It is similar to Utetes acustratus (Fischer, 1988) from New Guinea, but it has the length of the mesosoma 1.5 times its height (1.8 times in Utetes acustratus ), the apex of the antenna dark brown (white or ivory); length of the eye about 5 times temple in dorsal view (twice) and vein m-cu of fore wing angled with vein 2-M (linear) and length of the hind femur about 4 times as long as wide (3 times).