By 1973, more than 18,000 snails had been found and destroyed along with thousands of eggs, and the snail was . Shell with or without bright bands; with low wavy growth wrinkles; large but not robust, 23-28 mm long. 4). Fred G. Thompson (1934-2016) Ampullariids have been referred to as PILIDAE in earlier editions of this manual. (Thompson, 1968). Viviparus intertextus Suture deeply impressed. J. Clench and Ruth P. Turner (1956) published a survey of the fauna from the Suwannee River west to the Escambia River. Amber to milky white in color (Figs. Last whorl distinctly shouldered. Thompson, F. G. 1969. Shell elongate-conical. 87). (Thompson, 1968). Specimens then are placed in a fixative such as 10 percent formalin or Bouins Solution. (Clench, 1925). 16, 25, 28). Shell minute, 2.0-2.3 mm long; thin and transparent; spire 0.7-1.1 times length of aperture; flagellum lacking glandular crests. Earlier whorls of adult shell with heavy vertical ribs crossed by knobby folds or a strong spiral chord; sides of spire straight or weakly convex in lateral profile; embryonic shell with a single spiral chord on periphery and heavy vertical ribs, but without basal spiral chord (Fig. The criterion of inbreeding for defining species cannot be applied, and other objective criteria are not yet been established. Waccasassa Elimia It is characterized by the lobed shape and glandular patterns of the penis. (Thompson, 1969). Penis without a conspicuously enlarged papilla near right base, although other papillae usually are present. Vail, V. A. Another variety, with cream-colored flesh and mottled brown shells, was detected in 2022. Credit: Craig Pittman. Newborn young about 3 mm in diameter. Shell 2.8-3.7 mm long. Goodrich, C. 1942. Shell smaller, reaching a maximum diameter of 13 mm. Body whorl relatively rapidly expanding in diameter (Fig. They are commonly found on live aquatic plant stems, dead leaves and sticks, and on bottles and cans. In view of the inconsistency of these shell characters, these three forms may represent only a single species, Campeloma limum, which is widely distributed from the Escambia River system of Florida and Alabama east and north into North Carolina and Virginia. Aperture elliptical and usually attached to preceding whorl; 4.1-4.5 whorls present. (Haldeman, 1841). Mantle richly marked with reddish-brown blotches and spots. It is most common in Southwest Florida, and northwest Florida. (Linnaeus, 1758). Freshwater snails (Mollusca: Gastropoda) of North America. 86). Nautilus, 32: 71. 2015; Agudo-Padron 2018). Blue Spring Hydrobe This genus of minute freshwater snails is endemic to the Florida peninsula. Suture deeply impressed, forming a channel. Vail, V. A. Shell sculptured with prominent nodes overlapping suture and forming crenulations. Apical whorls pointed and raised, but not scalariform. It is troublesome mostly in southern Florida as far north as Tampa, but because potted plants are regularly moved northward it can appear almost anywhere. Penis with 3 papillae along right margin (Fig. Peristome narrow to broadly ovate. 77-79). This manual recognizes 113 species and subspecies that occurring in Florida and the list will increase with time. Length of shell up to 5 mm. Gainesville, Florida 32611-7800. Penis with 0-6 papillae confined to right margin (Figs. Attains a length of about 30-36 mm (Figs. Males with penis at anterior right corner of mantle cavity. 53). Floridobia fraterna 2018). Shell elongate. Periphery of body whorl below middle, side of whorl flattened and sloping toward apex (Fig. The planorbid snail Micromenetus dilatatus avus in the West Indies and Central America. Cymbal Ancylid 110). (Thompson, 1968). The family contains numerous genera and species, some of which are important medically as intermediate hosts for trematode parasites. 102a, 102b). Length of shell 2.1-2.8 mm (Fig. Genera that serve as intermediate hosts for schistosomatid trematodes have been studied extensively. Female shell about 3.5-4.0 mm long (Fig. Three new freshwater snails of the genus Cincinnatia from peninsular Florida. Fawn Melania Malacological Review, 24: 55-72. Sculpture consisting of incremental striations only. Swallow-tailed kites are spring and summer residents; snail kites are specially adapted to feed on apple snails in Florida freshwater wetlands year 'round. Since then a great amount of fieldwork has taken place throughout Florida, and many additions to the fauna have come to light. An invasive, giant snail species, that can also lead to outbreaks of meningitis, has been found in New Port Richey. (Walker, 1908). 124). Somatogyrus is distributed from the Mississippi River drainage system east to Atlantic coastal streams, and south to the Gulf coastal drainage systems. (Conrad, 1834). A single glandular crest present on apex of terminal lobe (Figs. Quarterly Journal of the Florida Acaemy of Sciences, 32: 241-65. (Goodrich, 1924). Shell shaggy with numerous spiral fimbriations that are broken into synchronized tufts. Our state park system has won national awards . 159-196). Apex of shell slightly convex in outline. Umbilicus closed or narrowly perforate. 97). Aperture strongly oblique. Overshadowing this genetic divergence are frequent examples of convergent evolution of similar adult shell characters among distantly related species. (Clench & Turner, 1956). Hatia pomilia hendersoni Body whorl rounded (Fig. Throughout the 19th and 20th Centuries malacologists made frequent field trips to explore river systems that were poorly known, and to revisit others that were renown for their rich and unique assemblages of species. After the shells are thoroughly rinsed, they can be air-dried in cardboard trays. The species of snail was present in Florida in the 1960s and 1970s before being eradicated in 1975, the FDACS said. Little is known about these animals, and diverse opinions exist as to how many species are recognizable. Shell with darker colored spiral chords that may be smooth or wavy. shell with 3.9-4.2 whorls (Fig. Important diagnostic characteristics for subfamilies, genera, and species are found in the female reproductive system, the male reproductive organ (the penis), and modifications of the radular teeth. (Fig. Shell short and stocky. Malacological Review, 12: 87-88. Elimia doolyensis Others were new taxa not found in earlier surveys. Walkerana, 1: 81-365. Hyacinth Siltsnail) Floridobia floridana (Frauenfeld, 1863). Shell larger, 2.8-4.6 mm long; adults with 4.0-4.9 whorls; spire longer, 0.9-1.3 times height of aperture; superior tubercles not arranged in oblique longitudinal series. The family attains its greatest diversity in Southeast Asia. Two, Melanoides tuberculata and Tarebia granifera, are medically important because they can serve as first intermediate host for the human lung fluke, Paragonimus westermani. 76). Shell generally thin but strong; whorls of spire strongly convex with deep suture (Figs. Planorbid snails are restricted to fresh water and occur worldwide, being found on all continental landmasses and many oceanic islands. 68). It is hoped that this manual will stimulate other biologists to contribute to our knowledge of freshwater mollusks. Our knowledge of the fauna has greatly increased during recent years, and a summary of this information was desirable to facilitate other kinds of study. Aphaostracon pachynotus Until recently the entire knowledge of the Florida freshwater snail fauna was based on miscellaneous papers dealing with single species, groups of closely related species or single river systems. Additional surveys found four different populations all associated with the CSX railways. Sides of spire straight in lateral profile. Primarily parthenogenetic; females viviparous with young snails in a brood pouch in nape. 160, 163, 166). Proc. Formalin does not even serve as a good fixative or preservative for long-term anatomical studies. 95). Univ. Females with live embryos in brood pouch in mantle; males with right eye stalk modified as a penis. 125); accessory crest absent on penis. Unlike other brown-tinted giant snails, this. The VIVIPARINAE is widely distributed throughout Europe, Asia and eastern North America. Length of shell 2.0-2.4 mm (Fig. Critical Florida references are Thompson 1968, 1969, 2000; Thompson and Hershler, 1991, and Hershler and Thompson, 1992. According to the Florida Department of Agriculture and Consumer Services (FDACS), the giant African snail, commonly referred to as GALS by invasive-species aficionados, is native to East Africa . Laevapex fuscus Sculpture consisting of axial striations only (Fig.147). Giant African snails can lead to giant problems. All snails in the subfamily Achatininae, including the giant African snail (GAS) (Lissachatina fulica), are regulated plant pests. Two-ridged Rams-horn Nat. Low-dome Physa The following key is modified from Basch (1963). 153). Rasp Elimia 24, 27). Most species are disc-shaped or planular, as is implied by the name PLANORBIDAE. Shell sculptured with very fine, uniformly spaced axial threads (Figs.168-170). Body whorl uniformly rounded peripherally (Fig. Apex about 0.4-0.5 times length of shell. (Pfeiffer, 1839). Thin and translucent or transparent. Aperture relatively shorter, about half or less the length of the shell. Rock Fossaria Channeled Applesnail Spire usually about equal to or greater than height of aperture (Figs. Spire depressed, much less than height of aperture, occasionally planular (Figs. Last whorl of adult shell smooth or with growth striations, but not with ribs and spiral chords. Peristome ovate to subcircular. A systematic study of the Family Physidae (Basommatophora: Pulmonata). 38). Hello Bruce. 158). The radula can be studied by dissecting out the buccal mass and macerating it in clorox or sodium hydroxide. Length of shell 2.0-2.4 mm (Fig. Seminole Siltsnail It is globose in shape, body whorls are wide, spire is depressed, and the aperature is narrowly oval (Burch 1982). 63). Florida. CLICK ON EACH PHOTO Fallen Angel Wing -Atlantic Mud Piddock Boring Angel Wing- Striate Piddock Rice Olive The reader will discover how very little we know about any genus occurring in Florida. Sculpture consisting of fine incremental threads, and spiral striations that may become obsolete at maturity. Nautilus, 19: 34. 58). Shell of various shapes and sculpture. Shell small, 2.0-2.8 mm long. Whorls 3.0-4.0. After the snails have been in the fixative for a few minutes to several hours, depending upon their sizes, they should be rinsed in water and transferred to 70 percent ethyl alcohol. Your choice will lead you to the proper identification of your snail or the next appropriate pair of questions. (Fig. Pomacea bridgesi The reader may be troubled by the imprecise shell characteristics that are used in the key. Central tooth of radula with long basocones along base (Fig. It is presented in the form of key supplements with illustrations and habitat information to facilitate identifications. Shaggy Ghostsnail Length of shell 2.2-2.6 mm (Fig. Ecology: This large snail is found in freshwater lakes, rivers, streams, ponds and ditches, preferring slow-moving water. Vertical ribs relatively strong and more widely spaced. 130). Work through the questions, each time choosing the characteristic that best matches your snail from the two choices. There is no consensus in systematic biology about how to treat these forms. (Fig.114). The giant African snails detected in New Port Richey, Florida are unrelated to the population of giant African snails eradicated from Broward and Miami Dade counties last year. Florida's Department of Agriculture and Consumer Services said that a Pasco County master gardener reported seeing a giant African land snail in the New Port Richey area on June 23. Rotund Mysterysnail 169). 40). They complete their life cycles in one year. Combining characteristics of cranes and rails, it . Aperture comma-shaped, tightly appressed against preceding whorl. (Lea, 1862). Choctawhatchee Pebblesnail) Somatogyrus sp. Apex suppressed to form a nearly flat plane with the peripheral angle (Figs.165-167). 7-9). Applesnails are tropical to subtropical organisms and cannot survive below 50F in the winter (Florida DOACS, 2002). Penis with 5-15 papillae along right margin arranged in 1-2 rows (Fig. Shell medium to large (12-75 mm). Floridobia alexander Click on the link in the row that best matches your snail. Mantle diffusely pigmented or unpigmented. Penis with two or more longitudinal crests within U-shaped superior tubercle (Fig. Shell conical, spire moderatly high. Endemic New World genera occur in Cuba, Jamaica, and northern South America. Female ovoviviparous with about 50 embryos in uterus; embryos clearly evident through clean shells. Clench, W.J., & R. D. Turner. Penis with a small blade-like flagellum along right margin and a heavy mid-ventral ridge that bears 8-11 narrow transverse dermal glands; other glands present on terminal lobe and flagellum (Figs. (Thompson, 1968). Brownish-yellow in color (Fig. Shell usually squarish or rectangular in shape. Shell glossy. Inferior crest absent. 60). Size small I I to medium, 8-12 mm in length. 17-29). Melanoides tuberculata The deterioration process is not reversible. Shell slender, attenuate. 146). Suture more deeply impressed. Tryonia aequicostatus Live field samples should be divided into two groups, one to be preserved for shells, the other to be preserved for anatomical specimens. Shell unicolor, with distinct vertical sculpture in addition to strong spiral sculpture. 54). (Thompson, 1968). Malacological Review, Suppl. 161, 164, 167). 3:51. (Pilsbry, 1899). Shell usually small to medium (2-25 mm). Shell with about 4.5-5.0 whorls; about 3.0-4.8 mm long (Fig. Giant Snails Invading Florida, "Major Threat" to Crops. 197-209). Eight species have been proposed. Micromenetus dilatatus avus (Pilsbry, 1905). Carib Physa (Lea, 1834). Aperture trapezoidal in shape; spire more robust, straight sided; with a shallower suture; parapical crest large (Fig. Recent studies treat amnicolids as a separate families. 112), occurs in the Ocmulgee River system in Georgia. 116a, 116b). Shell larger, 2.2-4.8 mm long. The other three forms, C. limum (Anthony, 1860), C. floridense Call,1866 and C. parthenum Vail, 1979, are exclusively apomictic parthenogens and have been separated on the basis of aperture coloration, embryonic shell coloration, and contour of the outer lip (Vail 1979a). Medium to large freshwater snails found on all continents except South America. Davis, G.M., M. Mazurkiewicz, & M. Mandracchia. Whorls 3.8-4.3. Florida Horse Conch ( Triplofusus giganteus) is the largest snail in North America and is Florida's state shell. Tadpole Physa Spire raised and flat-topped. Choctaw Lioplax 159). Accessory crest present. Aperture broadly in contact with preceding whorl. (Say, 1829). Shell transparent or opaque. 101). 61). They're different than the ones found previously. Sexes not conspicuously dimorphic in size. 83). 143). Shell with a brownish hue. Thompson, F. G. 1982. Whorls straight-sided, not scalariform; suture hardly distinct; aperture terminating at periphery of last whorl; vertical ribs weaker and closely spaced; adult size about 25-30 mm long (Fig. Fossaria is found throughout North America, and in northern Europe.