S. Mahunka szerk.: Folia Entomologica Hungarica 45/1. (Budapest, 1984)

laterally, upper and lateral sides of propodeum and episternum ventrally black, abdomen black, partly dark brownish red translucent. Wings normal, reaching beyond tergite 2, fore wings moderately brownish infuscated with broad hyaline basis, a transversal spot outside of cells, veins, pterostigma yellowish brown. Body sparsely covered with short white hairs. Head slightly, 1.12 times longer than broad (28 : 25), strongly broadened behind eyes, lateral sides rounded and only gradually converging backwards, eyes separated from occiput by equal distance as their length (9), occipital carina distinctly emarginated, surface finely granulated, hardly shining, punctures very shallow, hardly visible; ocelli in a right angle, hind ocelli situated nearer to ech other, distance between them two-thirds as long as that between an ocellus and an eye, POL r OOL = 4:6, outer margins of ocelli with distinct grooves; eye small, nearly round, hardly longer than broad (9 : 8), separated from mandibles by two-thirds the eye length (6 : 9); anterior margin of clypeus conspicuously protruding with rounded corners laterally and with parallel sides, surface raised into a high and sharp longitudinal keel medially; antennae stout, hardly thickened medially, scape and joint 2 slender (fig. 8), scape as long as joints 2-4 together, 2 distinctly longer than 3, 3-8 of equal length, joints 3-4 of equal length and breadth, 5-12 distinctly broader than long, length (and breadth) proportions of antennái joints 1-13 = 11(3.5): 5(3): 3(3): 3(3): 3(4): 3(4): 3(3.5): 2.5(3): 2.5(3): 2.5(3): 2(3): 2(3): 5(2.5). Pronotum shorter than its half breadth (14 : 16), lateral corners rectangular, sides hardly concave, posterior margin nearly straight, longitudinal furrow very narrow, surface granulated (fig. 9), shining only with some superficially larger punctures. Mesonotum, scutellum shagreened, nearly finely granulated (fig. 10), more shining than pronotum, parapsidal furrow weakly developed, notaulices deep, punctures or longitudinal furrow not present. Propodeum slightly longer than its half diameter transversally before spines, lateral margin parallel diverging only from spines (fig. 10), all carinae and area well developed, central carina bending only posteriorly, therefore lying about as deep as" basis of spines, latter stout, hardly longer than one-third length of propodeum (4:3.6). Episternum with longer, deeper punctures just below tegulae and ventrally with a transversal groove medially, surface granulated along the furrow. Tergite 1 smooth, polished (fig. 10), without punctures, 2 alutaceous at the basal third, polished and with scattered and very fine punctures up to posterior margin, excepting the polished streak along ventro-lateral margin, tergites 3-8 finely alutaceous. - o. - Unknown. Holotype o : "Sri Lanka: Ham.Dist. Palatupana tank, 15 m. 29-III-2-IV-1981", "collected or in leaf litter", ^'K. V.KROMBEIN, T. WIJESINHE, L. WE ER ATUNGE" (Washington USNM* Type No. 101150) Remarks. This species is very similar to M. minimus Kieffer, 1906 (captured in Cyprus in the Mediterranean region), but differs chiefly by the wings, the distance of eyes from mandibles and from occiput. The length of wings is not an essential specific difference in Mesitiinae, but the above-mentioned distance is rather important. KIEFFER published this species in the original diagnosis (1906:400): "yeux circulaires, de moitié aussi longs que les joues ou que leur distance du bord occipital". KIEFFER wrote later (1914:299): "Auge kreisrund halb so lang wie die Wange oder der Hinterkopf". . . "Flügel schmal, spitz, den Petiolus erreichend ... 2 mm." At present I regard this specimen to represent a new species. Metrionotus rufohumerus sp. n. <?. - Length 2.5 mm. Black, mandibles, clypeus, antennae excepting brown scape and joints 6-12, trochanters, tibiae basally and apically, as well as tarsi yellowish brown, tegulae and legs partly brown, pronotum red, anteriorly darker, posteriorly lighter, posterior margin yellowish translucent, last abdominal segments rather ventrally dark reddish brown. Wings normal, fore wings nearly hyaline, partly slightly light yellowish brown infuscated, pterostigma, veins light brown. Body sparsely covered with white hairs, antennae with a little shorter suberect hairs (fig. 12), than in M. alutaceus Benoit, 1968. Head nearly as broad as long (27 : 28), strongly broadened behind eyes, lateral sides gradually converging backwards (fig. 14), eyes separated from occipital carina by a slightly greater distance than length of scape (10 : 9), posterior margin remarkably emarginated, occipital carina narrow, surface of head granulated, finely shining, frons with scattered, fine punctures, between ocelli and eyes with denser but larger and shallower punctures (fig. 13), frontal sulcus present * = former United States National Museum collections deposited in the National Museum of Natural History, Smithsonian Institution.