S. Mahunka szerk.: Folia Entomologica Hungarica 46/1. (Budapest, 1985)

lateral apodemal impressions. Head almost 0.9 times as long as wide. Antenniferous tubercles acute, preocular tubercles absent, postocular ones small. Antenna strong, cylindrical, joint 3 1.5 times as long as thick, relative length of antennái joints 1 to 4 as 13:29:24:34. Rostrum reaching beyond middle of prosternum. Pronotum 3.4 times as wide as long. Lateral margin serrate, slightly concave, posterolateral angle sharply rounded. Median carinae rising anteriorly only. Lateral margin of laterotergites straight or slightly convex, posterolateral angles increasingly protruding from 6 to 8. Tip of segment 10 much surpassing that of subequilongous 8 and 9. Material examined: Pilisborosjenő (Hungary). Fifth instar larva (Figs 32, 34): Coloration much the same as in the fourth instar.Head more than 0.8 times as long as wide. Tubercles as on the fourth instar, postocular tubercle with yellow granulation. Antenna relatively long, strong, cylindrical, joint 3 1.7 times as long as wide. Relative length of antennái joints 1 to 4 as 13:33:25:29. Rostrum reaching little behind middle of prosternum. Pronotum 3.5 times as wide as long. Lateral margin serrate, straight or slightly concave, posterolateral angle sharply rounded. Median carinae rising anteriorly only, converging posteriorly. Lateral border of laterotergites straight, posterolateral angle rounded, increasingly protruding from segment 3 to 8. Tip of segment 10 slightly surpassing that of 8 and strongly that of 9. Material examined: Pilisborosjenő (Hungary). Aradus lugubris Fallén, 1807 Fifth instar larva (Figs 35-37): Brown with blackish granulation and yellow markings on apex of antenna! joints 2 and 3, median parts of tergites 2, 3 and 7 and on posterolateral angle of laterotergites. Head more than 0.9 times as long as wide, clypeus strong. Antenniferous tubercles strong, acute. Preocular tubercle high, blunt, postocular tubercle low. Antenna relatively long, slender, joint 2 narrow basally, thickening in basal 2/3, cylindrical in apical 1/3, joint 3 cylindrical. Relative length of antenna! joints 1 to 4 as 14:39:24:23. Rostrum reaching beyond hind margin of prosternum. Pronotum almost 3.5 times as wide as long. Lateral margin serrate, anteriorly concave, posteriorly convex, posterolateral angle rounded. Lateral margin of laterotergites straight, posterolateral angles rounded, increasingly protruding on segments 2-8. Lateral margin of laterotergite 8 obliquely broken behind spiracle. Segment 9 with extremely narrow laterotergite, posterior part without distinct border between segments 8 and 9 ventrally as well as dorsally. Tip of segment 8 reaching beyond that of 10. Material examined: Hammerland (Finland). Aradus erosus Fallén, 1807 Fifth instar larva (Figs 38, 39): Long, oval, unicolorous pitch-black, densely covered by granulation. Head about 0.9 times as long as wide. Pre- and postocular tubercles pointed,vertex with V-shaped depression. Antenna thick, short, about as long as width of head, cylindrical, joint 3 slightly thickening toward apex. Relative length of antennái joints 1 to 4 as 20:29:25:26. Rostrum reaching little beyond middle of prosternum. Pronotum 2.8 times as wide as long. Lateral margin straight, not roughly dentate. Lateral margin of laterotergites slightly convex, posterolateral angles 3-8 increasingly protruding. Lateral margin of laterotergite 8 dentate, with distinct tooth medially. Tergite 9 with narrow, pointed laterotergite. Tip of segment 8 much surpassing that of 10 and 9, latter the shortest. Material examined: Gaming, Kirchstein (Austria), Lojo (Finland). REFERENCE JORDAN, K. H. C. (1932): Beitrag zur Kenntnis der Eier und Larven von Aradiden. - Zool. Jahrb. Syst., 63: 281-299. Author's address: Dr. T. VÁSÁRHELYI Zoological Department Hungarian Natural History Museum Baross u. 13. H-1088 Budapest Hungary