Dr. Kassai Tibor - Dr. Murai Éva szerk.: Parasitologia Hungarica 9. (Budapest, 1976)

The single specimen found in Hungary evidently belongs to the species V, balsaci because, although only its scolex was available for evaluation, the quality and number of hooks borne by it corresponded in every respect with those characteristic of the type: the crown comprised 30 hooks, 18 u long each, with a base length of 19 u. The known hosts of V. balsaci are Myotis bechsteini, Eptesicus serotinus (JOYEUX and BAER, 1936) and Rhinolophus ferrumequinum (TENORA and BARUS, 1960); Myotis myotis was first recorded a new host in the present studies. Vampirolepis baeri sp. n. Host: Nyctalus noctula. - Localization: small intestine. - Habitat: Hungary (8 PARATYPES): Városliget park Budapest (bats resident in trees), 14th September 1967 (Nos. 1943 and 1947); 10th January 1968 (2 specimens No. 2046); 22nd November 1968 (Nos. 2373 and 2375); Óbuda district, Budapest, 18th June 1970 (No. 2603); Szabadszállás, comitat Pest, 27th September 1967 (No. 1955). Switzerland: Col de Jaman (Gillieron) 17th September 1967, leg. W. AELLEN (Coll. Mus. Genève No. 3211 - HOLOTYPE -). Extensity: 7 of 83 N. noctula (8. 4%) were infected. In three cases V. baeri was found together with V. acuta in the small intestine. - Intensity: 2 specimens in one host, and 1-1 specimen in 6 hosts. Description of Vampirolepis baeri sp. n. Medium-sized hymenolepidid, 140 mm long, maximum width 3 mm (Holotype specimen); another specimen containing ripe eggs (Paratype No. 2603) was 78 mm long by 2 mm wide, and the dimensions of the other specimens (7 Paratypes) varied in the range of 25— 55 mm x 1-2 mm. The proglottids are trapezoid; the young ones measure 90 x 290 - 130 x 400 n, the mature ones 180 x 1400 - 250 x 2600 ju. The margins of the strobila are serrate. The genital pores are unilateral and localize nearby the upper third of the proglottid's length. Two excretory ducts, 12 viz. 30-50 u in diameter, pass across the strobila. The scolex is 200-210 u in diameter, and 300 u in length. It bears 4 suckers, 85-95 ju in diameter each. The rostellum is 100 ju in diameter, and carries a crown of 45-49 hooks. The hooks are of a characteristic shape, the blade being longer than the guard. They measure 24 « at the base, and 26-27 u in length (Figs. 7, 10 and 11). The rostellum may protrude above the surface level of the scolex in a length of 100-125 n. It is retractable into a bulky rostellar sac, 120 x 200 u in size (Figs. 8b and 10). The three testes are arranged in a triangle, one being in poral and two in aporal position, either somewhat slanted or one above the other (Figs. 8a and 12). Testes measure 40 x 80 u in young proglottids and 70 x 120 to 120 x 200 u in hermaphroditic ones. The cirrus sac extends to the level of the excretory duct, and measures 130 x 40 to 200 x 60 u, depending on the age of the proglottid. Internal and external seminal vesicle are both present, the former is 35 x 45 to 60 x 160 n, the latter 50 x 100 to 100 x 200 u in size. The ovary is lobular, located in the median line and measures 125 x 60 to 250 x 100 u. The vitelline gland, located beneath the ovary in slightly aporal position, is 120 x 70 to 170 x 100 u in size. The vagina opens into the genital atrium nearby the cirrus, forming an extraordinarily large seminal receptacle, which varies in size from 100 x 50 to 900 x 90 u, depending on the age of the proglottid (Fig. 8a). The uterus is saccular and fiUs the entire meduUary space of the mature proglottids, and has multiple compartments. Its development is shown in Figs. 13-15. The eggs are 50-54 ju in diameter, the hexacanth oncosphere is 30-36 u long, and the embryonal hooks are 1718 u in the old proglottids. The Holotype specimen of V. baeri is kept in the Institute of Zoology, University of Neuchâtel (Switzerland), the Paratype specimens are to be found in the Cestode Collection of the Hungarian Natural History Museum, Budapest.