Torymus egypticus DO

Do, M. & A. K, 2013, Parasitoids complex of Asphondylia conglomerata De STEFANI (Diptera: Cecidomyiidae) on the Mediterranean Saltbush, Atriplex halimus L. (Chenopodiaceae) in Egypt, with descriptions of new species from Eulophidae and Torymidae (Hymenoptera: Chalcidoidea), Linzer biologische Beiträge 45 (2), pp. 1799-1811 : 1806-1808

Torymus egypticus DO ö ANLAR nov.sp. ( Fig. 6 a-e)

E t y m o l o g y. The name is derived from the name of the country where the specimens were collected.

T y p e: Types: Holotype female, Egypt: Alexandria, Alameria District, 30°59'54"N, 29°49'70"E, 09.iii.2013, emerged from galls of Asphondylia conglomerata on Atriplex halimus , leg. Ayman Kh. Elsayed, Cat. No:005-03 (MKUI). Paratypes: 2 females, same data as Holotype.

D i a g n o s i s. Hind coxa with many setae dorsally in basal half; basal cell, on upper surface of forewing, with a row of setae below SM; spurs of hind tibia not so very unequal, the shorter spur 0.8 the length of the longer spur; tip of hypopygium extending ¾ along gaster; ovipositor sheaths 1.1-1.25 length of body; index 3.9. OOL 1.1 OD; POL 2.0-2.21 times OOL. Malar space 0.39 length of eye. Mouth 2.2-2.3 malar space. Ovipositor sheaths length of body; index 3.8; legs with all coxae dark, concolorous with thorax, all femora and tibiae infuscate, tarsi yellow, except pretarsi black; antenna black, except basal half of scape yellow; antenna with anellus slightly broader than long. Head with temples slightly curved. Antennal scape not reaching anterior ocellus. Hind coxa 2.6 times as long as broad. Forewing with ST not very oblique.

D e s c r i p t i o n. female. Body ( Fig. 6 a ) with head ( Fig. 6 a ) in dorsal view twice as broad as long, temples 0.33 apparent length of eyes, fairly strongly convex, slightly curved; POL 2.0-2.21 OOL, OOL 1.1 OD. In frontal view the head is trapeziform with about straight genae. Mouth 2.2-2.3 malar space, which is 0.39 length of eye. Clypeus very slightly produced, weakly curved. Antennae with toruli well above lower eyeline, but slightly nearer to clypeus than to anterior ocellus; antenna ( Fig. 6 c ) scape 4.5 times as long as broad, not quite reaching anterior ocellus; pedicellus plus flagellum 1.25 breadth of head, flagellum proximally slightly stouter than pedicellus, filiform; pedicellus 1.5 times as long as broad; anellus twice as broad as long; F l 1.25 times longer than broad, F2-F5 1.3 times, F6 slightly longer than broad, F7 very slightly transverse; clava 2.4 times as long as broad; sensilla arranged in two rows, (2+4). Mesosoma ( Fig. 6 b ) 1.5 times as long as broad, mesonotum 1.56 times as broad as long, with fine reticulation, more scaly in frontal half, setae short, subdecumbent, without punctures, scutellum 1.2 times as long as broad, broadly rounded at base, sculpture as mesonotum, setae short, moderately long in hinder third; flange very narrow, minutely trabeculate. Dorsellum smooth. Propodeum smooth, with row of very fine fovea at base. Mesepimeron 1.6 times longer than broad, shorter than mid coxa (52:33). Hind coxa 2.6 times as long as broad with finely but distinctly raised reticulation, its hind edge strongly curved. Hind femur 4.8 times as long as broad. Spur of hind tibia 0.36 length of basitarsus. Forewing ( Fig. 6 d ) 2.26 times as long as broad; costal cell 6.2 times as long as broad, upper surface with some setae basally, beneath with one broken row in basal quarter and distal third plus a few scattered setae in the same area; basal vein with 6-7 setae; basal cell closed below; speculum open, extending beyond parastigma; M:PM:ST=60:18:5, stigma very shortly petiolate, slightly oblique. Gaster ( Fig. 6 e ) distinctly compressed; basal sternite extending beyond coxa by about one-third length of latter; hypopygium extending three quar- ters along gaster, bare except tip. Ovipositor ( Fig. 6 a ) index 3.8, slightly longer than body. Length 2.6 mm.

Colour: body dark green, with metallic reflection; scapus basally yellow. Palpi testaceous. Legs with all coxae dark, concolorous with thorax, all femora and tibiae infuscate, tarsi yellow, except pretarsi black;. Wings hyaline, veins brown.

Male: unknown.

C o m m e n t s. One species of Torymus , T. halimi GRAHAM & GIJSWIJT , has been known as parasite of A. conglomerata on A. halimus in Canary Islands, Spain, another species, Torymus schizothecae RUSCHKA reared from galls of Steffaniella sp. on Atriplex patula L. in Austria. By this study Torymus phillyreae RUSCHKA was reared from galls of Asphondylia conglomerata on Atriplex halimus . Torymus egypticus DOöANLAR sp. new differs from the species mentioned above in having ovipositor at least slightly longer than body (ovipositor as long as metasoma plus half of mesosoma in T. halimi and T. phillyreae , and as long as gaster in T. schizothecae ); ovipositor index in T. egypticus 3.8 (in the other species index at most 2). Beside those species the new species similar to T. impar (RONDANI) and T. borealis THOMSON in having malar space 0.3-0.35 lenght of eye, mouth 2.1-2.65 malar space, ovipositor sheaths 1.1-1.25 length of body, 3.9-4.6, but it differs from both of them in having POL 2.0-2.21 OOL, OOL 1.1 OD (in the both species at most POL 1.6-1.8 times OOL, OOL at least 1.27 OD); it differs from T. impar in having head with temples slightly curved, and reared from galls of A.conglomerata on A. halimus (in T. impar head with temples distinctly curved, and Reared from galls of Rabdophaga rosaria (LOEW) (Dipt. Cecidomyiidae ) on Salix spp.).

B i o l o g y. It may be a hyperparasitoid or parasitoid on Asphondylia conglomerata on Atriplex halimus and has low level of parasitism during the period from January to April.

D i s t r i b u t i o n. Egypt, Alexandria.

Figures

Fig. 6: Torymus egypticus DOöANLAR nov.sp. Female: (a) body, in lateral view; (b) head and part of mesosoma; (c) antenna; (d) forewing; (e) metasoma.