Ooencyrtus iranicus Hayat & Mehrnejad

Hayat, Mohammad & Mehrnejad, M. Reza, 2016, Ooencyrtus (Hymenoptera: Encyrtidae), egg parasitoids of the pistachio green stink bugs (Hemiptera: Pentatomidae) in Iran, Zootaxa 4117 (2), pp. 198-210: 204-206

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Ooencyrtus iranicus Hayat & Mehrnejad

sp. nov.

Ooencyrtus iranicus Hayat & Mehrnejad  , sp. nov.

( Figs 17–32View FIGURES 17 – 21View FIGURES 22 – 27View FIGURES 28 – 32)

Female. Holotype. Length, 1.01 mm (0.81–1.04 mm, n = 8; 1 female on slide, 1.15 mm). Body, in dorsal view, Fig. 17View FIGURES 17 – 21. Head nearly black; frontovertex with some coppery and bluish shine; inter-torular area and from below toruli to mouth margin bluish; malar space violet. Antenna with radicle dark brown; scape largely white with brown to dark brown in about dorsal half medially; pedicel brown in basal half, white in apical half; F 1 –F 6 yellow, all segments in about basal third (F 1) to basal fifth (F 6) brown; clava yellowish brown. Mesosoma dark brown; mesoscutum with some bluish shine laterally; scutellum dark coppery, with sides and smooth apex light bluish; tegula dark brown; mesopleuron bronzy violet. Wings hyaline; fore wing with dark brown infuscation around distal veins, obscuring limits of marginal, postmarginal and stigmal veins, but in wings with light infuscation around distal venation the limits of these veins clearly seen (as in Fig 23View FIGURES 22 – 27); discal setae in about basal half largely translucent. Legs, including fore coxae, yellowish white; mid coxa with about basal half of ventral surface brownish; hind coxa brown to dark brown. Gaster black; TI with bluish shine, and in some specimens with a brownish-yellow spot antero-laterally; third valvula dark brown.

Head. Occipital margin sharp; head, in dorsal view, 4.33 × as broad as frontovertex width, or frontovertex width 0.23 × head width ( Fig. 18View FIGURES 17 – 21) [paratype, on slide, 0.27 × head width, Fig. 19View FIGURES 17 – 21.]; ocellar triangle with apical angle a right angle; head, in frontal view, 1.22 × as broad as high; eye height 1.87 × malar space; frontovertex with raised polygonal reticulate sculpture, the cells small; sculpture on face finely elongate-reticulate, and on malar space lineolate-reticulate; setae white; eye apparently bare. Mandible as in Fig. 20View FIGURES 17 – 21. Antenna ( Fig. 21View FIGURES 17 – 21) with pedicel plus flagellum equal in length to head width; scape at least 6 × as long as broad; funicle segments all longer than broad, F 3 –F 5 each about 2 × as long as broad, F 1, F 2 and F 6 clearly less than 2 × as long as broad, the segments gradually but distinctly increasing in width distally; clava slightly shorter than F 4 –F 6 combined. Relative measurements (holotype, card): head dorsal width, 39; frontovertex width, 9; head frontal height, 32; eye height, 22.5; malar space, 12; pedicel plus flagellum length, 39.

Mesosoma ( Fig. 17View FIGURES 17 – 21). Mesoscutum with hardly raised, polygonal reticulate sculpture; scutellum with raised reticulate sculpture, polygonal in about anterior third, slightly elongate-reticulate posteriorly, but sculpture becoming fine in posterior fourth; sides with elongate- reticulate sculpture; posterior fifth smooth ( Fig. 24View FIGURES 22 – 27); sculpture on scutellum deeper than on mesoscutum; setae on collar of pronotum, mesoscutum and scutellum white; scutellum with apical setae pale brown; sides of propodeum distal to spiracles with silvery white setae. Fore wing 2.33 × as long as broad; marginal vein punctiform; postmarginal vein at least as long as marginal vein; stigmal vein thin ( Fig. 23View FIGURES 22 – 27); an oblique bare area present below parastigma, indicated by an arrow in Fig. 22View FIGURES 22 – 27. Mid tibia 2.92 × as long as mid basitarsus; mid tibial spur 0.75 × mid basitarsus length. Relative measurements (holotype, card): mesosoma length, 38; mesoscutum length (width), 18 (34); scutellum length (width), 17 (20). Paratype, slide: fore wing length (width), 111 (47.5); mid tibia length, 41; mid basitarsus length, 14; mid tibial spur length, 10.5.

Metasoma slightly shorter than mesosoma (31: 38); TVII as in Fig. 25View FIGURES 22 – 27; ovipositor as in Fig. 26View FIGURES 22 – 27; hypopygium as in Fig. 27View FIGURES 22 – 27. Relative measurements (paratype, slide): TVII length, 27; ovipositor length, 41; third valvula length, 7.5. [Ovipositor equal in length to mid tibia; third valvula shorter than both mid basitarsus and mid tibial spur, 7.5: 14: 10.5.]

Male. Length, 0.75–0.96 mm (n = 8). Body, in lateral view, Fig. 28View FIGURES 28 – 32. Similar to female except as follows:

Head. Frontovertex bluish in ocellar area, but laterally and anteriorly purple; face, including scrobes and intertorular area, greenish blue, behind eye purple. Antenna with radicle dark brown, rest pale yellow; scape whitish yellow, brownish in about apical third to two-fifths in upper two-thirds; pedicel brownish, apically pale yellow; clava in about distal half yellowish brown. Mesosoma with mesoscutum dull green with purple; scutellum coppery medially, sides and apex green. Leg colour same as for female, but mid coxa either completely pale yellow or faintly brownish ventrally; hind coxa on outer and ventral surfaces brown in about basal half.

Head, in dorsal view ( Fig. 29View FIGURES 28 – 32), with frontovertex width 0.37 × head width; head, in frontal view, 1.23 × as broad as high [on slide, 1.29 × as broad as high, Fig. 30View FIGURES 28 – 32.]; eye height 1.58 × malar space. Antenna as in Fig. 31View FIGURES 28 – 32.

Genitalia ( Fig. 32View FIGURES 28 – 32) with phallobase longer than mid basitarsus (18: 12).

Variation. There is hardly any variation in the specimens examined, except for body size, and very minor variation in the relative dimensions of the head width and frontovertex width.

Material examined. Holotype, ♀ (on card) ( NPC, registration No. 136 / 11 / 168 / 3), labelled “ IRAN: [Semnan Province,] Mabad, Damghan, 5.viii. 2015, Coll. MR Mehrnejad Acc. 1 ” and “Ex. Eggs of Brachynema germarii  on Pistacia vera  ”.

Paratypes. 37 ♀ (3 on slides, EH. 1928, EH. 1929, EH. 1939), 23 ♂ (1 on slide, EH. 1930), with same data as holotype. (2 ♀, 3 ♂ in NPC, registration No. 136 / 11 / 168 / 4; 4 ♀, 1 ♂, in BMNH; remaining paratypes in ZDAMU, registration No. HYM. CH. 737).

Host. Brachynema germarii (Kolenati)  ( Hemiptera  : Pentatomidae  ) on Pistacia vera  L. ( Anacardiaceae  ).

Distribution. Iran (Damghan).

Etymology. The species name is derived from the name of the country of origin of the type material.

Comments. In addition to the characters given in the key, O. iranicus  sp. nov. differs from O. pistaciae  sp. nov. mainly in the following characters: head width 4.33 × as broad as frontovertex width; antenna with pedicel and flagellum combined about as long as head width; funicle with F 3 –F 5 each nearly 2 × as long as broad, F 1, F 2 and F 6 clearly less than 2 × as long as broad, the segments gradually but distinctly increasing in width distally. In O. pistaciae  : head width 3.47 × as broad as frontovertex width; antenna slender, pedicel and flagellum combined longer than head width (38: 33); antenna with F 1 usually slightly shorter than F 2; F 2 –F 6 each at least about 2 × as long as broad, and funicle segments not appreciably widening distally.


National Pusa Collection


Iranian Research Institute of Plant Protection