S. Mahunka szerk.: Folia Entomologica Hungarica 43/1. (Budapest, 1982)

mányi Múzeum, Budapest), Dr. P. SPANGLER (Smithsonian Institution, Washington, D.C.), Drs. C.M.F. von HAYEK, J. MARSHALL and M. T, D. BRENDELL (British Museum, London), and Dr. J. MARTENS (Institut fur Allgemeine Zoologie, Johannes-Gutenberg-Universität, Mainz) for the opportunity to study all the abovementioned materials. Genus Lederia Reitter, 1879 Lederia Reitter, 1879. Verh. Zool.-Bot.Ges.

, Wien, 29: 479. Stauropus Fairmaire et Germain, 1863. Annls Soc.ent.Fr., Paris, (4) 3j_ 227 (praeocc.) Crioscapha Horn, 1893. Trans.

Amer.ent.Soc., 20: 144. Type species: Lederia suramensis Reitter, 1879 (by monotypy). Description: Body small (1.2 to 2.7 mm long), convex, oval (fig. 3), oblong-oval (figs. 1, 2) or more or less ovoid. Colour varying from light reddish-brown to black, elytra more or less unicolour (without expressed spots or bands). Body clothed with thin, decumbent, usually yellowish-grey pubescence. Head rather small, directed down, deeply drawn in pronotum (figs. 1-4). Eyes always present and more or less distinctly separated (figs. 1-4). Maxillary palpi 4-jointed, their last joint being irregularly oval, somewhat blunt, or obliquely truncate at apex, or roundly securiform (figs. 5, 6). Antennae rather short, 11-jointed (figs. 7-9), with a 3 to 4-jointed, sometimes loose and more or less poorly distinguishable club (figs. 8-11). Antennái joint 3 often clearly shorter than 2nd (figs. 7-9). Pronotum well transverse, broadest at the base whereupon abruptly roundly narrowing forward (figs. 1-4). Pronotum without despressions, its base usually slightly regularly concave (figs. 1-4) or very poorly bisinuate, nearly straight. Only in (?) L. californica (Barrett, 1928) remaining unknown to the authors, base of pronotum clearly bisinuate (making the species comparable with Microscapha spp.), but scutellum invisible. Edging of lateral margins of pronotum complete or shortened anteriorly (in L. arctica

, L. anatolica, L. scidlitzi and some specimens of L. suramensis)

, margins anteriorly being absolutely round. Scutellum absent (figs. 1-4) or hardly visible, point-like. Base of elytra not or just a little broader than that of pronotum (figs. 1-4). Elytra oval, oblong-oval or more or less ovoid, surface usually irregularly punctured, without striae or punctured rows. Suturai stria invisible. At least in the majority of species wings are absent. Legs rather short, apices of mesofemora in dorsal view almost not exceeding beyond lateral margin' s contour of elytra, whereas those of metafemora exceeding beyond it a little (fig. 1). Procoxae divided by a more or less triangular prothoracic process (figs. 13-16). Anterior coxal cavities posteriorly open. Mesocoxae divided by both a rather narrow directed backward mesothoracic and a broader directed forward metathoracic process (figs. 13-16). Metacoxae very large, subdivided by a suture into a narrow and oblique anterior and a broad blade-shaped hind part (figs. 17-19). Anterior metacoxal part narrowed outward (except in L. oviformis

) from coxal socket to metel isternum, often provided with a microsculpture finer than on hind part. Penultimate joint of both pro- and mesotarsi distinctly bilobated, that of metatarsi simple (fig. 1). Hind legs saltatory, their femora thickened and flattened; tibiae clearly shorter than femora, flattened, distad triangularly enlarged, simple, at outer edges without distinct ridges, apically each with 2 long well pectinate serrate spurs, larger of which reaching at least apical third of tarsus (figs. 21, 22). Metatarsal joint 1 very long, usually not shorter (but often clearly longer) than joints 2 to 4 taken together (fig. 1). Metathorax well developed, usually longer than abdominal sterna 1 and 2 taken together. Metepisterna usually completely divided from metathorax by a suture each (figs. 17, 18, 20), only in L. suramensis and L. arctica suture at posterior part of metathorax not expressed (fig. 19). In Lederina subgen.n. metepisterna lie very much outward, being very narrow (fig. 20) and often partly or completely fused with the epimeres. The outward position of metepisterna makes the species of this subgenus distinguishable from all the others, in which the internal suture of the metepisternum is situated considerably more medially (figs. 17, 18). It is also important that the place occupied by the metepisterna in Lederina is situated nearby that of the epimeres in species of the other subgenera, with the difference that the episternum is of ventral position, clearly visible in ventral view and somewhat broadened anteriad (fig. 20). The above characters have permitted us to name this part of the thorax in Lederina as metepisterna and not metepimeres, although for new comparative material of certain related genera ought to be studied before final conclusion can be reached. The metathorax, along its middle with a longitudinal depression is often of diagnostic value, at least in males (figs. 18, 19, 28-30, 37-39). Abdomen with 5 visible sterna. Aedeagus usually trilobated (figs. 31-36).