Megalommum pistacivorae

Holotype, ♀, length of body 7.6 mm, of fore wing 7.3 mm. Head. Antenna about as long as fore wing, with 61 segments; apical antennal segment with distinct spine and slender, scapus robust and distinctly protruding apically, its inner aspect with minute double margin apically; third, fourth and penultimate segments 1.2, 0.9 and 1.6 times their maximum width, respectively; length of maxillary palp 0.9 times height of head; eye distinctly emarginate (Fig. 3); face narrow and irregularly rugulose; clypeus flat, partly smooth and with some microsculpture, dorsally with angled carina and ventral margin thin and lamelliform, with 5 long setae ventrally; hypoclypeal depression 0.7 times as wide as minimum width of face (Fig. 3); frons moderately concave behind antennal sockets, smooth, without median carina (Fig. 16); vertex slightly convex, smooth, sparsely setose and stemmaticum protruding and surrounded by a groove; OOL:diameter of posterior ocellus:POL = 5:10:4; in dorsal view length of eye 5.2 times temple; temples directly narrowed behind eyes and smooth (Fig 16); malar suture absent, eye almost touching base of mandible; mandible strongly twisted and unidentate. Mesosoma. Length of mesosoma 1.6 times its height; side of pronotum and propleuron smooth, except for some indistinct fine crenulae anteriorly and some punctulation posteriorly; pronotum vertical anteriorly and with a shallow groove and no antescutal depression; mesopleuron smooth, setose, except for a medial glabrous area; mesosternal sulcus smooth and narrow; metapleuron punctulate, convex; mesoscutum nearly completely sparsely punctulate and setose; notauli only present anteriorly and shallowly impressed; scutellar sulcus present and with distinct fine crenulae; scutellum weakly convex and sparsely punctulate; side of scutellum smooth; metanotum medio-anteriorly with carina, posteriorly evenly convex and smooth; propodeum smooth, setose and evenly convex. Wings. Fore wing (Figs 1, 2): 1-M 1.8 times as long as 1-CU1; m-cu widened and 1.1 times as long as 1-M; first subdiscal cell with narrow and glabrous sclerome; 3-SR and SR1 weakly curved; r:3-SR:SR1 = 2:5:13; 2-SR:3-SR:r-m = 18:25:19; r-m largely unsclerotised; wide ring around dark patch of first subdiscal cell glabrous, but posteriorly setose; CU1b triangular and strongly widened basally. Hind wing: SR sinuate and marginal cell somewhat widened apically; subbasal cell setose; 1r-m weakly curved; M+CU:1-M:1r-m = 6:18:5. Legs. Tarsal claws simple and with bristly setae ventrally; hind femur slender (Fig. 20) compared toMegalommum jacobsoni; length of femur, tibia and basitarsus of hind leg 3.9, 10.0 and 4.7 times their maximum width, respectively; hind tibia with dense adpressed setae; hind tibial spurs 0.5 and 0.6 times as long as hind basitarsus; inner side of hind tibia and tarsus with dense long whitish setae. Metasoma. Length of first tergite 1.1 times its apical width, parallel-sided, dorso-lateral carinae strong behind spiracles and medial area longitudinally rugose; second tergite smooth except for crenulae near distinct triangular medio-basal area, area surrounded by crenulate groove and tergite antero-laterally with small triangular smooth areas (Fig. 18); second suture distinct and weakly sinuate and finely crenulate; medial length of second tergite 1.2 times median length of third tergite; third and following tergites smooth; ovipositor depressed, without notch or nodus dorsally and without ventral teeth, apically narrowed (Fig. 76); ovipositor straight, its sheath 0.25 times as long as fore wing. Colour. Yellowish-brown; antenna, hind femur dorsally, hind tibia and tarsus and ovipositor sheath, black; fore and middle femora, tibiae and tarsi, and remainder of hind leg more or less dark brown; most veins of basal half of wing, sclerome of first subdiscal cell and apical 0.6 of pterostigma largely dark brown (Fig. 2), vein 1-R1 of fore wing yellowish and remainder of veins brown; wing membrane moderately infuscate, below parastigma and patch in first subdiscal cell dark brown. Variation. Length of body of ♀ 6.7–8.7 mm (of ♂ 5.2–7.3 mm), and of fore wing of ♀ 6.7–8.1 mm (of ♂ 4.3–6.4 mm); antenna of ♀ with 54 (1), 61 (1) or 65 (1) segments, of ♂ with 44 (1), 47 (1), 51 (1) or 52 (1) segments; vein 1-M of fore wing 1.4–2.2 times as long as vein 1-CU1; vein 3-SR of fore wing 1.4–1.7 times vein 2-SR; body completely reddish-, orange or yellowish-brown; basal 0.4 of pterostigma largely yellowish or darkened and only with yellowish basal patch; hind coxa and femur largely dark brown to largely brown; length of first tergite 1.1–1.3 times its apical width; second metasomal suture weakly to strongly crenulate; second, third and base of fourth metasomal tergites of ♂ finely rugulose, but sometimes only superficially so and partly smooth; length of ovipositor sheath 0.25–0.26 times fore wing.

South Palaearctic (Iran).