S. Mahunka szerk.: Folia Entomologica Hungarica 44/2. (Budapest, 1983)

part; about 0.45 mm long, 1.2 times as long as basal diameter of antennái joint III. Antennae usually 6 jointed, about 0.4-0.6 times as long as the body. Length of antenna! joint from the third to the sixth as: 0.100-0.135, 0.100-0.120, 0.070-0.090, 0.070-0.080 for basal part and 0.1550.210 for unguis, usually without secondary rhinaria on the third joint. Processus terminális 1.93.0 times as long as base of joint VI, and 1.1-2.1 times of the length of joint III. Third antennái joint divides during moulting, giving the third and the fourth joint. Tip of rostrum generally reaching beyond the middle coxae; ultimate rostral joint about 0.105-0.115 mm long, about 0.9-1.2 as long as second joint of hind tarsi. Siphunculi conical, with a circular incision below the flange, about 0.080-0.090 mm long, about 0.06-0.07 times as long as body length and 0.7-0.9 times of second joint of hind tarsi. Cauda semi-circular about 0.035-0.055 mm long, about 0.3-0.5 times as long as its basal width, bearing 4-6 hairs. Legs bearing numerous fine hairs. Hind tarsal joint II about 0.100-0.115 mm long. First tarsal chaetotaxy: 3,3,3 (Measurements see Table 2.). The fourth instar larva: In life yellowish brown or greenish brown in colour. In mounted specimens body oval, about 1.467-1.953 mm long. Dorsal sclerotization as in the third instar larva. Marginal tubercles and mesosternal processes absent on mesothorax. Tergite VIII bearing 6 hairs about 0.055-0.060 mm long, 1.4 times as long as basal diameter of antennái joint III. Antennae 6 jointed, about 0.4-0.8 times as long as the body. Length of antennái joint from the third to the sixth as: 0.130-0.260, 0.110-0.180, 0.080-0.120, 0.080-0.090 for basal part and 0.210-0.305 for unguis; usually without secondary rhinaria on the third joint. Processus terminális 2.3-3.8 times as long as base of joint VI, and about 0.8-2.3 times of the length of joint III. Tip of rostrum generally reaching to the beyond of middle coxae; ultimate rostral joint about 0.1100.125 mm long, about 0.8-1.0 as long as second joint of hind tarsi. Siphunculi conical, with a circular incision below the well developed flange, about 0.100-0.120 mm long, 0.05-0.08 times as long as body length and 0.8-1.0 times length of second joint of hind tarsi. Cauda semi-circular, about 0.045-0.060 mm long, about 0.4-0.5 times as long as its basal width, bearing 5-6 hairs. Hind tarsal joint II about 0.120-0.130 mm long. First tarsal chaetotaxy: 3,3,3 (Measurements see Table 2.). DESCRIPTION OF DIFFERENT STAGES OF BRACHYCAUDUS AMYGDALINUS I) Apterous viviparous female In life light green in colour, abdominal tergites forming a small black patch. In mounted specimens body broadly oval (Fig. 2.), about 1.829 to 2.402 mm in length. Compound eyes about 3.3 times longer than triommatidion, consisting of about 56 to 78 ocelli. Frons slightly sinuated, median frontal tubercle a little higher than lateral frontal tubercles. Antennae usually 6 jointed, about 0.33 to 0.65 times as long as the body, with joint I and II brown. Flagellum from the pale joint III and IV gradually darker towards the base of joint VI; processus terminális gradually slightly paler towards apex. Length of antennái joint from the third to the sixth as: 0.205-0.320, 0.110-0.165, 0.085-0.120, 0.080-0.100 for the basal part and 0.170-0.268 for the unguis, respectively. Processus terminális 1.7-3.4 times as long as base of joint VI, 0.5-1.3 of the length of joint III. The third joint with 0-13 secondary rhinaria and with 6-11 hairs. Tip of rostrum generally reaching beyond the middle coxae; ultimate rostral joint about 0.085-0.095 mm long, 0.6-0.8 times as long as second joint of hind tarsi. Head and thorax sclerotized and pigmented brown in colour. Legs, compound eyes, siphunculi, cauda and genital plate brown. Transverse rows of indistinct imbrication on abdominal tergites anterior to the siphunculi. Metanotum fused with abdominal tergites I-V forming a brown patch. Marginal tubercles present on mesothorax, pear shaped; mesosternal processes conspicuous, oblong. Marginal tubercles present on metathorax, oval shaped, and absent on abdominal tergites; and spinal tubercles absent on abdominal tergites VII and VIII. Tergite VIII with 8-9 hairs, mostly with filamentary apices, placed in a row on posterior margin of sclerotic part of this segment; longest of these hairs 0.080 mm long, 2.7 times as long as basal diameter of antennái joint III. Longest hairs on antenna! Joint III 0.015-0.020 mm long, 0.5-0.7 times as long as the basal diameter of this joint. Siphunculi conical shaped, short and smooth with faint traces of several imbrications, with a circular incision below the well developed flange, 0.090-0.110 mm long, about 0.04-0.06 of the body length and about 0.7-0.9 times the length of second joint of hind tarsi. Cauda short, semi-circular shaped, about 0.050-0.080 mm long, bearing 4-6 hairs, about 0.3-0.6 times as wide at base as its length. Legs bearing numerous fine hairs. Hind tarsal joint II about 0.1200.135 mm long. First tarsal joints with 3, 3,2 hairs (Measurements see Table 3.).