S. Mahunka szerk.: Folia Entomologica Hungarica 55. (Budapest, 1994)

FOLIA ENTOMOLOGICA HUNGARICA ROVARTANI KÖZLEMÉNYEK LV 1994 p. 23-36 New species of the genera Omaloplia and Acarina (Coleoptera: Scarabaeoidea) L. Ádám New species of the genera Omaloplia and Acarina (Coleoptera: Scarahaeoidea). - Omaloplia balcanica sp. n., Omaloplia pontica sp. n., Omaloplia rozneri sp. n. and Acarina margaritacea sp. n. are described. Omaloplia lonae (Schatzmayr, 1923) is redescribed. Melolontha nigromarginata Herbst, 1785 is re-established from the synonymy of Melolontha ruricola Fabricius, 1775. A catalogue of known species of the genera Omaloplia and Acarina is given. Omaloplia balcanica sp. n. In general appearance extremely similar to Omaloplia iris (Reitter, 1887). Body oval, convex, moderately broadening posteriorly; surface very finely microreticulated, barely nacreous, preferably greasily shining; pitch-black in colour, elytra transparently pale yellow - elytral margins (epipleuron, 10th and 1st intervals as well as basal and apical margin) pitch-black - or (in some cases) transparently pitch-black in full, antennae, palpi and tarsi reddish brown. Dorsal and ventral surface with sparse pubescence, pronotal and elytral margins fringed with long bristles. Surface of head coarsely, somewhat irregularly punctuated, with shallow setiferous punctures and obscure setae. Clypeus transverse quadrangular, narrowing anteriorly, with upturned margins; anterior clypeal margin almost rectilinear; anterior angles broadly rounded. Pronotum convex, transverse quadrangular, arcuately narrowing anteriorly; surface strongly, somewhat irregularly punctuated, with setiferous punctures and obscure setae; margins finely bordered; posterior angles obtusely rounded. Elytra convex, moderately broadening posteriorly, truncated apically. Humeral callus weakly prominent, preapical callus indistinct. Lateral margin (in lateral view) distinctly sinuate. Epipleural ridge present, reaching outer apical angle. Intervals weakly convex (odd intervals a little more raised, therefore, apparently narrower than even ones); surface finely, somewhat irregularly punctuated, with moderately long, obscure setae (with a few long, obscure setae around shoulders and scutellum as well as along suture). Wings normally developed. Scutellum triangular, rounded apically. Pygidium strongly, densely, somewhat irregularly punctuated, with rather obsolete setiferous punctures; surface very finely microreticulated, faintly scabrous, weakly, greasily shining. Apical region of pygidium of females conspicuously gibbous. Dorsal side of posterior tarsi with several fine punctures. Length: 7.5-9.0 mm. Male genitalia: Fig. 1.