Szekessy Vilmos (szerk.): A Magyar Természettudományi Múzeum évkönyve 59. (Budapest 1967)

Farkas, H.: Eriophyids collected by Dr. Pócs in Vietnam

ANNALES HISTORICO-NATURALES MUSEI NATIONALIS HUNGARICI Tomus 59. PARS ZOOLOGICA 1967. Eriophyids Collected by Dr. T. Pócs in Yietnam By H. FARKAS, Budapest Dr. T. PÓCS, of the Chair of Botany, Teachers' College, Eger, was on a collecting and research trip for the first time in 1963 in Vietnam. His collectings were primarily botanical, but he also gathered a very interesting zoological material. The Eriophyids, to be described herein, were "by-products" of his botanical collections. Dr. T. Pócs had namely, and very kindly, lent me the material of his herbaria for an acarological examination, and there were found a number of Eriophyids on the desiccated plants. Unfortunately, the majority of the specimens had obviously been lost during desiccation, botanical preparation, and the arrangement of the material. These circumstances explain the fact that I had to base my descriptions on a relatively meagre amount of specific material. I wish to express my thanks also here, both to Dr. T. Pócs and his Vietnamese colleagues, TIÉP and KHOI, for the collected material. Tetra vietnamica sp. n. The female is 165 \x long and 59 u. wide. Its shape is peculiar, attaining the greatest width at the posterior margin of the shield, and then tapering evenly; thus the animal is not fusiform, the abdominal margins being straight. Since I had to base my description on a single dorsoventrally situated specimen, I was unable to measure the length of the rostrum. Nor is the original colour of the exemplar known —it can no more be established in the preparation. Shield 39 long, 59 u, wide, laterally arcuate, slightly triangular in shape. Lobe of anterior shield obtusely truncate, terminating subserrately. Pattern of shield very distinct. Median line absent or hardly discernible. Medially on posterior margin merely a sagittiform design. Admedian lines as well as those decurrent on margin of shield strong. Dorsal tubercles of shield spaced 22 [i from one another, situated slightly in front of posterior margin, hemisphacrical. Dorsal setae 14 y. long, obtusely pointed, erect and proclinate and also slightly exclinate. Fore leg 35 u, long, tibia 12 [i. long, tarsus 7 u. long, claw 6 fjt long, slightly bullate and arcuate. Featherclaw 5-rayed, rays arranged densely. Hind leg 33 u, long, tibia 8 u. long, tarsus 6 u, long, claw and featherclaw similar to those of fore leg. Coxae almost without lines and granuli. Anterior coxae conjoining with medium width centrally. Abdomen with 25 tergites and about 57 sternites. Tergites completely without microtuberculi, those on sternites of medium size. The concave, median, longitudinal dorsal section, so characteristic of the genus Tetra, is peculiarly narrow in this species, observable only in dorsal middle. Lateral bristle 14 u. long, first ventral seta 35 jx long, second ventral seta 10 u, long, third ventral seta 30 u, long. No accessory seta visible. Female genital organ 22 u, wide, coverflap densely striated, genital seta 14 p. long. Genital bristles inclinate centrad—a unique occurrence, as far as I know, in the Eriophyids.