Salsuginus Beverley-Burton, 1984 (Monogenea: Ancyrocephalidae) from Cyprinodontoidei (Atheriniformes) in North America with descriptions of Salsuginus angularis (Mueller, 1934) Beverley-Burton, 1984 from Fundulus diaphanus and Salsuginus heterocliti n. sp. from F. heteroclitus

Abstract

Salsuginus Beverley-Burton, 1984 has been proposed for ancyrocephalid monogeneans found on North American Cyprinodontoidei (Atheriniformes). The genus is distinguished by the following characteristics: penis sclerotized, tubular, spiralling to form single coil; accessory piece with median groove to accommodate shaft of penis, distal point heavily sclerotized; dorsal and ventral hamuli similar in shape with distinct superficial and deep roots and curved blade; dorsal and ventral transverse bars bandlike, bowed posteriorly with posterior notch at extremities of each: larval hooks of similar shape and size with well-developed sickle bearing thumblike projection. Salsuginus angularis (Mueller, 1934) Beverley-Burton, 1984, the type species, is redescribed from the present material found on Fundulus diaphanus (Lesueur) in Ontario. Salsuginus umbraensis (Mizelle, 1938) n. comb., S. funudulus (Mizelle, 1940) Beverley-Burton. 1984. S. seculus (Mizelle and Arcadi, 1945) n. comb. and S. bahamianus (Hanek and Fernando, 1972) n. comb. are transferred from Urocleidus Mueller, 1934; S. spirae (Williams, 1980) n. comb. is transferred from Ancyrocephalus Creplin, 1839. Material found on F. heteroclitus taken in New Brunswick is described as S. heterocliti n. sp. Evolutionary aspects of Salsuginus spp. are briefly discussed and notes on the identification of species parasitizing Fundulus spp. are presented. Previous records of Salsuginus spp. are listed.

Ligophorus Pilengas N. Sp. (Monogenea: Ancyrocephalidae) From the Introduced So-Iuy Mullet, Mugil Soiuy (Teleostei: Mugilidae), in the Sea of Azov and the Black Sea

“…Male copulatory complex consists of tubular penis about 1 m in For haptoral and genital sclerotized structures, the metric variables studied are shown (see Materials and Methods for abbreviations of measurements). Lowercase letters in parentheses correspond to standard haptor measurements (Murith and Beverley-Burton, 1985). (Table I) (Figs.…”

Salsuginus yutanensis n. sp. (Monogenea: Ancyrocephalidae) from Fundulus sciadicus in Clear Creek of Eastern Nebraska

“…Measurements were taken according to the protocols of Murith and Beverley-Burton (1985). To assess morphological differences between dorsal and ventral hamuli of the same species and hamuli of various species, The accessory piece of the male copulatory apparatus has less pronounced proximal lobes than are observed for most of the other species.…”

Salsuginus thalkeni n. sp. (Monogenea: Ancyrocephalidae) from Fundulus zebrinus in the South Platte River of Nebraska

“…Measurements were taken according to the protocol of Murith and Beverley-Burton (1985). In addition, ratios of die and xly measurements were calculated in order to distinguish the present species from previously described worms whose hamuli had proportions that appeared to be different from those of S. thalkeni.…”

“…1-7) Diagnosis: Ancyrocephalidae with the characters of the genus Salsuginus as defined by Murith and Beverley-Burton (1985). Body 409 (336-480,36.9, 10) long by 117 (106-144,12.4,10) in maximum width (midbody); haptor 54 (48-58, 5.1, 10) long by 74 (58-86, 7.8, 10) wide; pharynx 32 (27-38, 2.9, 31) in transverse diameter.…”

“…A thorough study of the ancyrocephalid monogeneans parasitizing Fundulus species was presented by Murith and BeverleyBurton (1985), who reviewed and evaluated taxonomic characters, synonymized some of the helminth species, assigned themal1 to the genus Salsuginus, and provided advice on the identification of specimens from various hosts. The present description is intended to resolve the taxonomic position and nomenclature of the ancyrocephalid worms that have been used in previous ecological studies (Adams, 1985(Adams, , 1986Janovy andHardin, 1987, 1988), according to the criteria of Murith and Beverley-Burton (1985).…”