Dr. Murai Éva szerk.: Parasitologia Hungarica 23. (Budapest, 1990)

Female: Total length 8.43-13.00. Trunk fusiform, with characteristic con-striction in anterior trunk part; 6.33-12.50 long and with maximum width 1.29-1.98; posterior trunk part narrower, 0.75-1.11 wide. Anterior part of trunk covered with spines situated in two zones. Most specimens with ante-rior spinous zone invaginated in trunk. Anterior zone 0.231-0.300 long. Second spinous zone 0.790-0.835 long; spines situated in 72-92 longitu-dinal rows of 10-12 (13) hooks each; spines triangular, 0.010-0.0375 long. Neck conical, 0.45 long and 0.51-0.60 wide. Proboscis cylindrical widens in posterior third; 0.86-0.95 long, with maximum width 0.270-0.375 and width in anterior part 0.237. Armature consisting of 20-21 longitudinal rows of 16 hooks each. Pattern of hook position similar to that of males; for measurements see Table 9. Proboscis receptacle sac-like, double-wall-ed, attached at proboscis base; 1.20 long. Lemnisci elongate, 1.55-1.80. Trunk filled with eggs. Eggs elliptical, 0.106-0.137 long and 0.030-0.037 wide; with polar swellings of middle shell. Remarks: SCHMIDT (1973) resurrected the genus Southwellina (Witenberg, 1932) and recognized three valid species in it. Only S. hispida is wide-spread in the Palaearctic fish-eating birds and has been described several times under different names: Arythmorhynchus fuscus Harada, 1929, A. duo-cinctus Chandler, 1935, Polymorphus ardeae Belopol'skaya, 1958 and Hemiechinosoma ponticum Petrochenko et Smogorzhevskaya, 1962. These synonyms were accepted by KHOKHLOVA (1986). The present specimens have larger eggs than these mentioned in all the previous descriptions: up to 0.138 in our material and up to 0.119 in the material from Crimea (SCHMIDT 1973). S. hispida was recorded in Japan, Taiwan, Galapagos Islands, North America, Primor'e region and Ukraine (SCHMIDT 1973; KHOKHLOVA 1986). This is its first record for Hungary. CONCLUSION A total of 7 aquatic bird species of four orders were found as hosts of acanthocephalans of the order Palaeacanthocephala (Table 1). Polymorphus diploinflatus, P. magnus, P. cf. phippsi and Southwellina hispida are first recorded for the Hungarian fauna. AH the species are redescribed and figured on the basis of Hungarian specimens. DIMITROV A, Z. M., MURAI É. és GENOV, T.: Vizsgálatok magyarországi vízimadarak Acanthocephala élősködőin Hét magyarországi vizimadárból hat buzogányfejü-féreg fajt közölnek a szerzők (1.táblázat). Két faj már ismert volt faunaterületünkről: Filicollis anatis (Schrank, 1788) gazdái a tőkésréce, a kerceréce és a szárcsa; Sphaerirostris lancea (Westrumb, 1821) gazdája a bíbic. Négy faj új a magyarországi faunában: Southwellina hispida (Van Cleave, 1925) Witenberg, 1932 nagykócsagból; Polymorphus diploinflatus Lundström, 1942 tőkésrécéből; Polymorphus magnus Skrjabin, 1913 kontyos récéből; Polymorphus cf. phippsi Kostylew, 1922 pehelyrécéből került a Természettudományi Múzeum gyűjteményébe.