S. Mahunka szerk.: Folia Entomologica Hungarica 34/2. (Budapest, 1981)

to ÍV as: 16:40:40:31 (Fig. 4). Labial atrium widely open, rostrum reaching'hind border of prosternum, relative length of rostral joints I+n-IV as: 26:19:18. Abdominal tergite I with 2 glabrous areas on both sides, tergites n-VTI with a 2:2:1 pattern of glabrous areas (erroneously figured by VÁSÁRHELYI, 1980, Fig. 15). Abdominal sternites II-VII with a 1:2:1 pattern of glabrous areas, but on sternites Ü-VII two centres are visible (Fig. 5). Measurements (o): median length of body 7.2 mm. length of antenna 3.3 mm, length of head 1.4 mm, width of head 1.1 mm, length of pronotum 0.7 mm, width of pronotum 4.5 mm, length of mesonotum 0.9 mm, width of mesonotum 4.7 mm, maximum width of abdomen across segment IV 5.2 mm. Notes on larval development. The antenna of the Aradid species, including relative length of joints, Is rather characteristic. At the beginning of larval development joint IV is the longest and adult ratios are developed by different growth rate of joints. Unfortunately, the first Instars of foliaceus are not known, but a diagram of the relative length of the antennái joints in percentage of the total length of the antenna (Fig. 7) shows that in the last two larval instars joint II grows more rapidly than joints I and IV (see also Figs. 3, 4, 6). Depression and furrow of joint m will totally develop In the last instars. Number of teeth on pronotal margin Increases while that of meso- and metanotum will disappear and basal expansion of hemelytra is only finely serrate. The pattern of ventral glabrous areas will change as well: the number of ventrolateral glabrous areas will double by the formation of two centres in the fifth instar and complete separation in the adult stage. The imaginai median longitudinal groove (USINGER and MATSUDA, 1959) is represented on the larvae as opaque area (as on adults In other subfan:' z of the family), but on the fifth instar it is narrower and somewhat depressed. It's fine structure will be treated elsewhere . The male of Aradus (Miraradus) mirabilis (Figs. 8-12) Dark brown except when stated otherwise. Head little longer than wide (Fig 8). Antenna long, joint RI yellow apically and depressed with furrow, relative length of antennái joints I to IV as: 22:39:35:28 (Fig. 10). Antenniferous tubercles pointed, not reaching tip of clypeus, with a yellow tooth laterally. Preocular tubercles small. Postocular tubercle pointed on rigth side while blunt on left side. Vertex with two opaque areas, depressed. Labial atrium widely open. Rostrum almost reaching hind border of pronotum, tip ending between two small longitudinal ridges. Relative length of rostral joints I+n-IV as: 28:21:20. Pronotum more than thrice as wide as long, with a yellow spot on both sides of neck region. Anterior and lateral border with teeth, hind border sinuate. Disc granulated, with four carlnae and two crescentiform smooth areas. Granulation finer on lateral expansion. Scutellum pentangular, disc anteriorly elevated, with granules forming a more or less definite longitudinal carina medially. Margin curling upwards anteriorly and apically but not posterolaterally where margin yellow. Legs long with two pale yellow rings on each tibia, arollum not visible. Hemelytra reaching basis of paratergites Vm, corium with granulated veins except yellow cubitus. Basal expansion and some veins (granulation) yellow, membrane brown with yellow markings. Abdomen oval, with expanded, toothed connexival plates. Connexival plates ÏÏ-IH with one tooth each, IV with one pointed median, and one blunt tooth, both anteriroly and posteriorly, V-VIII with 3 teeth. Hind margin of each plate yellow, paratergites Vin with a yellow spot medially. Abdominal sternites with a narrow longitudinal groove medially, increasingly wider and shallower posteriorly. Ventral glabrous areas with a 1:2:1 pattern on sternites n-Vn. Spiracles II-VI ventral, gradually shifting to side and emerging on small tubercle posterorly, Vn and Vin lateral (Fig. 9). Genitalia (Figs. 11-12): tergite IX without protruding structure, hind border slightly sinuated (thus the simplest known form in the genus). Paramere broad, strongly curved, on the specimen not lying on pygophore. Parandrium less developed (Fig. 12). Measurements (8): median length of body 7.1 mm, length of antenna 3.2 mm, length of head 1.3 mm, width of head 1.2 mm, length of pronotum 1.2 mm, width of pronotum 3.9 mm, length of scutellum 1.6 mm, width of scutellum 1.2 mm, maximum width of abdomen acroas segment V 3.7 mm. Material examined: Saigon, Chochinchine, 1.935., K. Davidov. (Deposited In the Zoological Institute of the Academy of Sciences of the USSR, Leningrad).. Both specimens, the female holotype and this one have many characters in common, while the differences do not exceed the range of sexual dimorphism or Individual variability generally accepted for the other species. Some of the more significant differences are the following (female characters only): antennái joints I and IV are subeuqilongous, scutellum narrower and disc mostly