S. Mahunka szerk.: Folia Entomologica Hungarica 47/1-2. (Budapest, 1986)

3 (2) Basic colour yellowish-brown or brown, with brown of blackish markings. Posteromedian part of pronotum distinctly darker than posterolateral part, concolorous with anteromedian part. Brown and blackish markings more extended on the whole body betulae 4 (1) Anterolateral angle of laterotergites with insignificant tooth only. Disc of pronotum not highly elevated. Antennái Joint II often shorter than 0.6 5 times head width, then joint only apically thickening, or somewhat longer than 0.7 times head width, then posterolateral angle of laterotergites not yellow. 5 (6) Antenna long, strong, joint II at base thicker than fore tibia and thickening along the whole length, 0.74 times as long as the width of head. Posterolateral angle of laterotergites with a few yellow teeth only anisotomus 6 (5) Antenna distinctly shorter, thinner, joint II about as thick as fore tibia, cylindrical, thickening apically only, less than 0.65 times as long as the width of head. Posterolateral angle of laterotergites with extended yellow spots. 7 (8) Laterotergites wider, posterolateral angles more protruding, apex about as far from posterolateral apodemal impression as the length of segment across lateral apodemal impressions krueperi 8 (7) Laterotergites narrower, posterolateral angles less protruding, apex distinctly nearer to posterolateral apodemal impression than the length of segment across lateral apodemal impressions ribauti REFERENCE VÁSÁRHELYI, T. (1985): Key to the fifth instar larvae of flat bugs of the Carpathian Basin (Heteroptera: Aradidae). - Acta Zool. hung., 31 (4): 397-404. Author's address: Dr. T. VÁSÁRHELYI Zoological Department Hungarian Natural History Museum Baross u. 13. H-1088 Budapest Hungary