S. Mahunka szerk.: Folia Entomologica Hungarica 44/2. (Budapest, 1983)
FOLIA ENTOMOLOGICA HUNGARICA ROVARTANI KÖZLEMÉNYEK XLIV. 2. 1983 p. i65. 17 3 On the morphology of Brachycaudus schwartzi CB. and B. amygdalinus (Schout) (Homoptera: Aphidinea) By E. DARWISH (Received December 3, 1982) Abstract: The apterous adult females and larval stages of Brachycaudus schwartzi CB. and B. amygdalinus (Schout.) were morphologically studied and described. The morphological characteristics of Brachycaudus species are of special interest of the author (Darwish: 1982). The present work was carried out in the Hungarian Natural History Museum, to add new contribution to the available knowledge about the aphid B. schwartzi CB. and B. amygdalinus (Schout.) infesting peach and almond trees, respectively, in Hungary. Van der GOOT (1913) mentioned in the original description that Brachycaudus adults have compound eyes with a visible triommatidion. Frontal tubercles small or absent, unguis from 1.5 to 6 times as long as basal part. First tarsal Joint with 3:3:3 or 3:3:2 hairs, siphunculi cylindrical or tapering, 1/30 to 1/6 as long as the body and cauda short usually semi-circular; little if any longer than its basal width and bearing 4 to 13 hairs. HABIB and EL-KADY (1961) described that the alate viviparous adult female of B.amygdalinus (Schout.) which was found in Egypt, with an antennái formula 6-3-4-5; unguis about 2.8 times as long as basal part; number of rhinaria on antennái joint HI 10 to 13. First hind tarsal joint with 3 hairs. Siphunculi very short. Cauda semi-circular with about 6 hairs. The synonyms of B. schwartzi CB. were described briefly by HILLE RIS LAMBERS (1947), NEVESKY (1951), THOMAS (1962), MOSTAFAWY (1967). Material and Methods Specimens were found in large numbers in two localities, Nagykovácsi (Julia-major) and Pilisvörösvár on peach on the 10th of July, 1981 and 24th of July, 1981, respectively, for B. schwartzi and in Pomáz on almond on the 4th of June, 1981 for B. amygdalinus . The aphids were collected in the field with the plant, then taken to the laboratory, where specimens were transferred into 70 % ethyl alcohol. For maceration the method mentioned by HILLE RIS LAMBERS (1951), and explained by van EMDEN (1972) was used. The specimens were mounted in BERLESE's fluid. Measurements of 10 individuals from each locality and each instar were taken, and the means + standard error are given (shown) in Tables 1-3.
