S. Mahunka szerk.: Folia Entomologica Hungarica 56. (Budapest, 1995)

Gaster (Fig. 7) slightly longer than and as wide as mesosoma; Tl crenulated and upturned anteriorly, with long and sparse hairs; T2 with smooth basal foveae, almost bare; T3-T6 very short and smooth, T6 invisible from above. Colour shiny black, almost metallic. Mandibles, antennae, tegulae and legs dark brown, all tibiae and tarsi proximally and fore tibiae also distally lighter. Length: 0.9 mm. Male. Unknown. Holotype female: Denmark, East Jutland, Mols Laboratory area, Sletten 9. VIII. 1993 (P. N. Buhl leg.), deposited in the collection of the Zoological Museum in Copenhagen. Unique. Swept in cloudy weather at about noon. A very characteristic species. In Kieffer's (1926) key it runs to the genus Prosynopeas because of its keeled scutellum, but it is so similar to species of Platygaster s. str., in most other characters that this single feature hardly justifies a displacing from Platygaster. Platygaster molsensis differs from Prosynopeas dactylidis Kieffer more particularly in having a less transverse and more sculptured head lacking carina, in having notauli and in being darker in colour. The species of the "cochleata group" of Platygaster which according to Vlug (1985) may belong to Prosynopeas all differ from Platygaster molsensis in having no trace of notauli and in having differently structured mesoscutum and scutellum. Perhaps Platygaster molsensis is closer related to the American species P. columbiana Fouts, P. hyalinipennis (Ashmead), and P. laticeps (Ashmead) but these species all have the preapical segments of flagellum transverse or tergite 2 striated to half its length, cf. Fouts (1924). In scutellar structure Platygaster molsensis looks much like a Synopeas s. str. but it lacks the apically sinuate scape and the thickly haired junction of Tl and T2 typical for this genus (and the general structure of head and thorax is widely different from a typical Synopeas). All species of the genus Leptacis are structurally different from Platygaster molsensis. Thus, for the time being there is no other possibility than to place this species in the diverse genus Platygaster s. 1. which is clearly a paraphyletic assemblage, composed of numerous groups characterized primarily by different scutellar structures. Platygaster planoides sp. n. (Figs 8-12) : 4* Female. Head from above (Fig. 8) 2.2 times as broad as long; vertex coriaceous; occiput strongly transversely striated. Head from in front (Fig. 9) about 1.2 times as broad as high; frons moderately reticulate-coriaceous, strongly transversely striated in lower half. Malar space about two-fifths the length of an eye; temples as long as an eye; OOL:POL:LOL = 4:8.3. Head with sparse and short hairs on eyes, along inner orbits and on temples, around mouthparts with longer hairs. Antenna (Fig. 10) long and slender; pedicel almost 3.0, 1st flagellar segment about 2.0 times as long as wide; flagellar segments 2-7 become shorter towards apex of flagellum but hardly thicker, 2nd about 2.5 times as long as wide; apical segment about 3.0 times as long as wide. Flagellum with sparse hairs as long as two-fifths the width of segments.