Shell with or without bands; slender; Suture deeply impressed; upper whorls with a strongly carinate periphery (Fig. (Vanatta, 1934). 173). Ghost Rams-horn Three species are known from rivers entering northwest Florida from Georgia and Alabama. The most recent sighting of a giant African land snail took place in 2017, meaning the species can now be considered eradicated in the state of Florida. 34); penis frlattened, blade-like (Fig. Sculpture above periphery of whorls consisting of nodes arranged in vertical and spiral rows. The coloration of the aperture and the embryonic shell is not consistent within single population samples, and the contour of the outer lip is highly variable within single drainage systems and with the age of the specimens examined. 162-164). Hello Bruce. Pseudotryonia brevissimus Aperture elliptical or trapezoidal in shape. 34, 35). Males with penis at anterior right corner of mantle cavity. It should be remembered that it is only a key which emphasizes shell characters. Many samplings of hydrobiids collected during the period of May through September are not identifiable because only immature forms are present, and important diagnostic anatomical characteristics have not yet developed. Specimens then are placed in a fixative such as 10 percent formalin or Bouins Solution. (Lea, 1834). Hyacinth Siltsnail) Floridobia floridana (Frauenfeld, 1863). Shell with a brownish hue. (Vail, 1979). Swallow-tailed kites are spring and summer residents; snail kites are specially adapted to feed on apple snails in Florida freshwater wetlands year 'round. (Fmr.) The number of whorls persent on the shell can help you easily identify the snail species. Spiral sculpture absent. Earlier whorls of adult shell with vertical ribs and spiral chords. Endemic New World genera occur in Cuba, Jamaica, and northern South America. Identification Damage from snail and slug pests appears as oblong, irregular holes at both the margin and the center of leaves and flowers. Shell thin, fragile, very much depressed, less than 0.25 times as high as long. Penny Sprite) Micromenetus floridensis (Baker, 1945). 197-209). Shell elongate conical, spire high. The specie prefer quite clear water, of lakes and backwaters of streams andsprings. 75, 76). Length of shell 2.4-3.4 mm (Fig. 158). Others were new taxa not found in earlier surveys. Newborn shells white. There were no references to cover the entire state. There is much disagreement as to how many species actually exist. Thin and translucent or transparent. Shell sculptured with very fine, uniformly spaced axial threads (Figs.168-170). (Thompson, 1968). 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. 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 . Rock Fossaria Shell light brown and frequently mottled with rust-colored spots that may form a spiral row below the suture. Whorls 3.0-4.0. Color uniform olive-green, never banded (Fig. Aperture relatively ample (Figs. 5: 1-140. 53). 1962. Shell shaggy with numerous spiral fimbriations that are broken into synchronized tufts. Apex distinctly convex in outline. Planorbis alabamensis and dilatatus in the Floridian Pliocene. Length of shell 2.2-2.6 mm (Fig. Penis filament white. In others they are deposited in the water in gelatinous clusters. Bugle Sprite Shell nearly smooth, sculptured with irregularly spaced incremental striations (Figs. 1978. Paper fig A Florida Gulf Coast specialty shell! Mantle mottled with black spots and blotches. Florida Shell Guide. Umbilicus of shell closed. Shell smaller, generally less than 12 mm long. 117). Florida. Shell subcircular, smooth, often encrusted with dark material. Thick-lipped Rams-horn Shell conical; thin and transparent; 4.0-4.5 strongly arched whorls. Shell discoidal, grayish-white in color; transparent when fresh. Ichetucknee Siltsnail 120). Last whorl not shouldered (Figs.155, 156). 4, 5). Planorbula armigera wheatleyi Spire depressed, much less than height of aperture, occasionally planular (Figs. Most have monotonously simple, conical or depressed-conical shells that are nearly devoid of taxonomically useful characteristics. One species occurs naturally in Florida, and three others have been introduced. Two occur in Florida. Penis with some superior tubercles fused into a U-shaped crest; parapical crest raised on a fleshy pedicel; accessory crest and inferior crest usually present (Fig. It can grow to a length of 16 inches (400 millimeters) and is easily identifiable by the left-handed opening of the shell - meaning when you look at the shell, the opening is on the left. It is characterized by the lobed shape and glandular patterns of the penis. Floridobia fraterna The snails identified in Pasco County look different from the ones previously seen in Miami-Dade County: Their flesh is creamy white, rather than grayish brown. The snails remain a threat in Hawaii and the Caribbean after their eradication in Florida in 2021. Apex in about middle of shell. 91). Radula with bicuspid lateral teeth (Fig. 69). 1905. Thiarids are ecologically significant because they tend to replace native snails where they are introduced and because of their abundance. This genus of minute freshwater snails is endemic to the Florida peninsula. Shell globose with a relatively depressed spire; about 1.0- 1.2 times as high as wide. Snails on corn. Sexes strongly dimorphic in size, males about half as long as females. There is no consensus in systematic biology about how to treat these forms. Recent studies treat amnicolids as a separate families. Suture relatively shallow. Umbilicus widely perforate, accentuated by a strong circum-umbilical keel. Shell squat, compact, cylindric-conical in shape, thick and opaque. TAMPA, Fla. - A horntail snail, an invasive pest common in India, has been found in Miami-Dade County, spurring agriculture officials to start a program to prevent the possible spread of the species, the Florida Department of Agriculture and Consumer Services said Thursday. Vertical ribs strongly developed, crossed by nearly equal sized spiral threads that form low spines where they cross the ribs, adults about 20-25 mm long (Fig. Aphaostracon pycnus Penis without a conspicuously enlarged papilla near right base, although other papillae usually are present. Penis with a large, blade-like flagellum with continuous heavy dermal glands along each side (Figs. Littoridinops palustris 123). Marisa cornuaurietus Shell large, 80-100 mm wide. Now officially known as simply a Snail Kite, the subspecies from Florida and Cuba (Rostrhamus sociabilis plumbeus) formerly known as the Everglade Snail Kite was listed as endangered in 1967.The range of the Florida population of Snail Kites is restricted to watersheds in the central and . Like. It became increasingly important to provide an identification manual of the freshwater snails of Florida for many reasons. The genus is found along the east coast of North America from Maryland south to Tabasco, Mexico. JACKSONVILLE, Fla. - An invasive giant African snail that has already had to be eradicated twice in the last 50 years in Florida is back and one county is on high alert. About 4.2-4.6 weakly arched whorls with a weakly impressed suture. Micromenetus d. dilatus 59). Peristome complete around aperture. 5). Primarily parthenogenetic; females viviparous with young snails in a brood pouch in nape. Apex behind center of shell. University of Illinois Press, Urbana. Shell medium-sized or large; 5.4-7.5 mm long; thick and opaque; ovate or globose; apical whorls depressed; sides of spire rounded; body whorl conspicuously enlarged, ample, rapidly descending to aperture along last half whorl. Suture not as deeply impressed as in 77b. They are commonly found on live aquatic plant stems, dead leaves and sticks, and on bottles and cans. Wekiwa Hydrobe It is globose in shape, body whorls are wide, spire is depressed, and the aperature is narrowly oval (Burch 1982). Shell small, 2.0-2.8 mm long. Wekiwa Siltsnail A review of the aquatic gastropod subfamily Cochliopinae (Prosobranchia, Hydrobiidae). Aperture relatively large with fine, uneven, serrate denticles along parietal wall (Fig. Outer lip of aperture strongly sinuous in lateral profile (Fig. It is important to save some specimens for anatomical studies. Shell with three whorls. A single species consisting of two highly variable subspecies occurs in Florida. Hatia pomilia hendersoni About fifteen species have been described from North America. 86). Female adult snail kites have yellow or orange legs and ceres; and red or orangish-brown eyes. Shell glossy. Outer lip less sinuous. Shell conical with strongly arched whorls and a deeply impressed suture. Pygmy Siltsnail) Floridobia parva (Thompson, 1968). It matters not that the specimens are stored in 70 percent alcohol after having been fixed in formalin. 89). Occasional Papers on Mollusks, 2: 261-87. In parthenogenetic organisms each population is inbred in the strictest genetic sense, and frequently a population will have minor characteristics that distinguish it from others. Females with live embryos in brood pouch in mantle; males with right eye stalk modified as a penis. They achieve their greatest diversity in genera and species in temperate North America. The snails can produce 1,200 eggs in a year and grow up to about the size of a human fist. Aperture narrowly in contact or free from preceding whorl. It occurs in India, Sri Lanka, Bangladesh, Nepal, Pakistan and Brazil (Figure 1) (Raut and Ghose 1984; Biswas et al. Thompson, F. G. 1969. Horse conch in mud Horse Conch snail The mature horse conch can be two feet long! October 14, 2021 7:00 am. (Couper, 1844). Lower margin of aperture advanced beyond upper margin so that plane of aperture slopes posteriorly when viewed from the side (Figs.189-193). Embryonic shell with fine vertical ribs and a heavy spiral chord on periphery and two basal spiral chords (Fig. Three other species occur farther north. Shell small, about 3.0-3.5 mm long; adult with 4.4-4.8 whorl; lower corner of aperture tending to be angulate with fluted channel (Fig. Shell with 3-4 whorls. The first edition of The Freshwater Snails of Florida: a Manual for Identification was published in 1984. Shell medium-sized, 3.0-3.8 mm long; thinner, translucent or transparent in life; tear-shaped; spire raised and nearly straight-sided, pointed; body whorl less conspicuously enlarged, not descending to aperture along last half whorl. Shell coiled to the left, with the aperture on the left side (Figs.147-158). Outer lip continuously rounded (Figs. University of Florida scientists say the nightmarishly named "rat lungworm" has been found in multiple species of snails in the Miami area, including the invasive giant African snail. Conical with relatively slender whorls. Brown garden snail, Cornu aspersa (formerly Helix aspersa, Cantareus aspersus, and Cryptomphalus aspersus) is a member of the family Helicidae.This snail species originates from Britain, western Europe, and along borders of the Mediterranean and Black Seas. Adult size small, about 12-16 mm long (Fig. Apex suppressed to form a nearly flat plane with the peripheral angle (Figs.165-167). Penis with one papilla on left margin (Fig. Mihalcik, E. L. & F. G. Thompson. Fortunately in Florida, the species are relatively easy to distinguish. The island apple snail is the largest of the known species in Florida with shell sizes up to five inches in length. Pilsbry, H. A. Sculptured with regularly spaced, fine, incremental threads and spiral striations; spiral striations evident only on base of whorls in some specimens. Apex smooth, with no trace of radial striations (Fig. Hebetancylus excentricus J. Clench and Ruth P. Turner (1956) published a survey of the fauna from the Suwannee River west to the Escambia River. Adult shell without lamella on interior walls of aperture. Taylor, D. W. 2003. Suture deeply impressed, forming a channel. 15). Davis, G.M., M. Mazurkiewicz, & M. Mandracchia. Each: $28.50 M-890 BANDED TULIP SHELL, Fasciolaria lilium A small predatory snail that feeds on clams. Prominent minor spiral sculpture along periphery. Whorls of spire weakly scalariform, causing the suture to be deeply incised. Aperture comma-shaped, tightly appressed against preceding whorl. Texture dull. 84). Penis with 5-15 papillae along right margin arranged in 1-2 rows (Fig. It is hoped that this manual will stimulate other biologists to contribute to our knowledge of freshwater mollusks. (Walker, 1905). Shell usually elevated, but variable. Amnicola is a widespread genus in temperate North America. Their color varies from red-orange, to pink, to a blue purple. GAINESVILLE, Fla., Feb. 26 (UPI) -- University of Florida researchers have confirmed the presence of a deadly parasite in three non-native species of snails that have colonized South Florida. (Pilsbry and Beacher, 1892). (Thompson, 1968). Two new species of hydrobiid snails from Florida and Georgia, and a discussion of the biogeography of south Georgia streams. 15, 18). 80). Vail, V. A. 7 new spider species . Only Elimia is found in Florida. Nuclear whorl slightly protruding, 0.29-0.41 mm in diameter transverse to initial suture. Florida's . However, this appears to be an over reduction, and several southern species were synonymized that appear worthy of recognition. Enterprise Siltsnail) Floridobia monroensis (Dall, 1885). This revision follows the classification proposed by Taylor. 89-91). (Pilsbry, 1889). Apex of shell flat-topped, but sunken below periphery of last whorl. Introduction to the Physidae (Gastropoda, Hydophila): biogeograhy, classification, morphology. 1945. Smooth-ribbed Hydrobe (Conrad, 1834). A press release sent from FDACS said that a gastropod enthusiast in Coconut Grove discovered the snail and sent it to the University of Florida for identification. (Sowerby, 1878). Whorls 4.6-5.3. Peninsula Ancylid Dense Hydrobe Published April 18, 2013 (Thompson, 1968). Shell minute, 2.0-2.3 mm long; thin and transparent; spire 0.7-1.1 times length of aperture; flagellum lacking glandular crests. Thompson, F.G. 1979. Inside of lip with or without a reddish callus but callus never dark red in color. Shell more slender and attenuate; spire more elongate in adults, about 0.7- 1.0 times height of aperture. Aperture elliptical in shape; spire slenderer and slightly convex in outline; suture moderately impressed suture; parapical crest reduced in size. 159-196). Shell elongate. An investigation by FDACS Division of Plant Industry found multiple positive sites with the snail in Miami-Dade County. Six species are known to occur in Florida. Radial riblets on entire surface of shell except apex. Apex slightly behind and slightly to the right of midline. Some species that are endemic to Florida springs live in environments with nearly constant temperatures and apparently reproduce continuously throughout the year. A little practice may be necessary to perfect this relaxing procedure. Umbilicus narrow, deep (Fig. Clifton Spring Hydrobe (Thompson, 1968). 1982. Freshwater snails (Mollusca: Gastropoda) of North America. Identification KeysThese files are all keys for the identification of various kinds of organisms. 161, 164, 167). As was anticipated, further work on the systematics of the southeastern freshwater snail fauna created the need for subsequent revision in 1999, and for this updated version. 170). Most inhabit fresh water, but some also occur in brackish water. Biomphalaria havanensis The species was eradicated again in 2021 after being detected in 2011 in Miami-Dade County, according to FDACS. The living snail is bright orange. Physid species have similar and superficially featureless, variable shells, and the shell is imprecise for identifying most genera and many species. Four species currently are recognized, but the genus has received very little study over most of its range. (Thompson & Hershler, 1991). (C.B. They were created by or for the Florida Department of Environmental Protection, or its predecessor agencies.Amphipod Key, Volumes 1-5 - LeCroy, Sara E. An Illustrated Identification Guide to the Nearshore Marine and Estuarine Amphipoda of Florida:Volume 1 (2000, PDF, 18 MB).Volume Penis with 4-6 papillae along right margin (Fig. The fixative may damage the shell, but that is unimportant for anatomical purposes. 2018). Many species are secondarily modified to appear right-handed or pseudo-dextral (FIGS. Cymbal Ancylid (Gould, 1841). Brackish-water genera, Onobops and Heleobops, that are common in Florida are omitted. Melanoides turricula Haitia cubensis Three species in Florida were introduced from Southeast Asia. Hydrobiids are small- to medium-sized operculate snails that live primarily in brackish and fresh water. Amnicola rhombostoma Curator of Malacology. Apex very obtuse, almost in the middle of the shell. 2002. Includes the limpkin, a Sunshine State specialty. Florida authorities believe that the snail, native to eastern Africa, was reintroduced to the state when someone brought it home as a pet. RELATED: Proof of megalodon extinction is in their teeth, scientists say. Aperture without serrate denticles on parietal wall. Aphaostracon asthenes 109a, 109b). A synopsis of the classification of the freshwater Mollusca of North America north of Mexico and a catalogue of the more recently described species with notes. Micromenetus brogniartiana 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. Thompson, F.G. 1968. 33); males without copulatory structures. Littoridinops monroensis In previous editions of the manual species of Floridobia were placed in the genus Cincinnatia.
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