florida snail identification

203, 209). Operculum neomelanian, with a small, rapidly expanding nucleus located near the basal margin (Fig. Hyacinth Siltsnail) Floridobia floridana (Frauenfeld, 1863). Similarities in appearance among the exotic species can make identification very difficult. Spire shorter, conical, 0.7-1.3 times length of aperture, nearly straight-sided in outline, suture of whorls weakly or moderately impressed. Planorbid snails are restricted to fresh water and occur worldwide, being found on all continental landmasses and many oceanic islands. Campeloma geniculum (Conrad, 1834) is readily recognized by its obese, solid shell; it usually has a normal proportion of males in its populations, although some populations are apomictic parthenogens. Shell olive-green with vertical reddish flames and spots. 15, 18). 107, 108). For the purpose of completeness, the three parthenogenetic forms and C. geniculum are included in the key. Other families occur elsewhere in North America and in other continents. 123). Many have been synonymized, some undeservingly so. Adult shells about 40 70 mm high (Fig. Its brown spotted exterior provides camouflage, making it a challenge to spot. 105, 106). Apex subacute, distinctly eccentric to the right of the midline. Aperture large, oval, much more than half the length of shell. The profile of the whorls and their comparative size can also help determine the species. The snails are tan colored, high and conical, with mature snails about to 1-inch long. Two occur in Florida. Attains a length of 30-40 mm (Fig. Radula with bicuspid lateral teeth (Fig. Penis with a dense pattern of superior tubercles. Peristome narrow to broadly ovate. Shell translucent. The first edition of The Freshwater Snails of Florida: a Manual for Identification was published in 1984. The greatest diversity of genera and species is in the Indo-Australian region. The International Commision on Zoological Nomenclature has ruled that AMPULLARIIDAE is the valid name for this family of snails. Scatter a few granulated menthol crystals on the water surface and allow the container to sit for 10-15 hours, at which time the snails should be extended from the shell and insensitive to probing with a needle. Invasive snails that already cost FL $24 million are - Florida Phoenix 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. They are variable in their shell characteristics, and some samples may be difficult to identify. Sides of spire straight-sided in outline. Outer lip continuously rounded (Figs. Aperture of shell closed by an operculum (snail must be collected live because the operculum is lost soon after death). Combining characteristics of cranes and rails, it . Prominent vertical ribs on middle and upper whorls. 201, 207). Umbilicus widely perforate, accentuated by a strong circum-umbilical keel. The deterioration process is not reversible. Mesa Rams-horn The beaches in Florida are perfect for shelling and beach combing. 199). 65). 1963. Sides of spire concave in outline (Fig. Banded Mysterysnail The giant African land snail ( Lissachatina fulica (Bowditch)) (GALS) is one of the most invasive pests on the planet, causing agricultural and environmental damage wherever it is found. Operculum with about 3 whorls (Fig. RELATED: Proof of megalodon extinction is in their teeth, scientists say. 159-179). Essentially identical shells occur repeatedly among unrelated genera and subfamilies. 12). Occasional Papers on Mollusks, 2: 385-412. Operculum calcareous with two pegs on inner surface (Figs. Laevapex fuscus Black-crested Elimia) Elimia albanyensis (Lea, 1864). Penis with 4-6 papillae along right margin (Fig. 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. Bayou Physa However, formalin is an excellent fixative for short-term preservation. Shell small, 2.0-2.8 mm long. Marginal teeth of radula trapezoidal with well-differentiated cusps. 57). Suture of whorls more deeply impressed than in previous species. Shell about 0.38-0.41 times as wide as high and about 20-27 mm long. Penis with a few simple scattered superior tubercles on outer surface; parapical crest on a low ridge; accessory crest and inferior crest absent (Fig. Fossaria modicella Identification Damage from snail and slug pests appears as oblong, irregular holes at both the margin and the center of leaves and flowers. Umbilical perforation wide, 1/6 to 1/8 diameter of shell. Proc. Giant snails that can cause meningitis found in Florida - WESH Peristome ovate to subcircular. Adult shells small, less than 3 mm high; umbilicus closed by the reflected columellar lip; columellar margin of the aperture nearly straight, barely convex (Fig. Proceedings of the Academy of Natural Sciences of Philadelphia, 86: 29-66. Shell distinctly carinated above and below; both apex and base funnel-shaped. 126); accessory crest present on penis. Campeloma geniculum Aperture relatively large with fine, uneven, serrate denticles along parietal wall (Fig. (Weatherby, 1879). Many North American snail species were described near the turn of the century by Walker (1918). Aperture elliptical and usually attached to preceding whorl; 4.1-4.5 whorls present. Female shell about 3.5-4.0 mm long (Fig. 61). (Fig. (Thompson, 1968). 158). Shell elongate-conical, with about 5-7 whorls. Snails have invaded some local areas throughout northern Santa Rosa and Escambia Counties this summer. Shell grayish-white. Fossaria cubensis The bio-economic importance of snails to environmental issues has become increasingly relevant because of the impact that economic development has on Florida waterways. 7 new spider species . 2015; Jayashankar et al. Approximately 35 species have been described. common name: tree snails of Florida - University of Florida 125); accessory crest absent on penis. Giant African land snail: A Florida county is quarantining after a Aperture widely separated from preceding whorl. 33); males without copulatory structures. Floridobia is known from peninsular Florida north along the Atlantic seaboard to Maine. Our state park system has won national awards . Shell sculptured with vertical, weakly curved ribs and much finer spiral striations. Taylor, D. W. 2003. 153). Shell with a brownish hue. Pomacea bridgesi Occasional Papers on Mollusks, 2: 261-87. Shell Guide | Bailey-Matthews National Shell Museum | Sanibel Island 15). On sibling species and genetic diversity in Florida Goniobasis (Gastropoda, Prosobranchia, Pleuroceridae). Adult size small, about 12-16 mm long (Fig. The planorbid snail Micromenetus dilatatus avus in the West Indies and Central America. Aphaostracon xynoelictus Thompson, F. G. & R. Hershler. Ovate Campeloma MESZAROS: It's not clear how these snails entered Florida again. 37), which is important for generic and specific diagnosis. Giant snails that were eating Florida homes finally eradicated again 94). In Florida, the African land snail existed largely in Miami-Dade County, although hundreds of the pests were found in Broward County, specifically western Davie, in 2014. . 89-91). 69). 70). Floridobia vanhyningi 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 . Amnicola rhombostoma Work through the questions, each time choosing the characteristic that best matches your snail from the two choices. Giant African Land Snail Identification Sheet - Florida Commissioner of . Other species deposit eggs during the period of March through May, at which time the adults die and immature forms dominate the population through August or September. 10-12). Taylor recognizes twenty-three genera based on the soft anatomy. Smooth-ribbed Hydrobe Average length about 5 mm (Figs. Height of shell about 14-16 mm; width, 10-12 mm (Figs. Invasive snail that loves damaging plants, living in humidity found in (Say, 1829). However, this appears to be an over reduction, and several southern species were synonymized that appear worthy of recognition. Size: 2-4 cm. Adults about 6-8 mm wide (Figs. (Gould, 1841). 118). Endemic New World genera occur in Cuba, Jamaica, and northern South America. Only Elimia is found in Florida. The shell characters given above for separating the families apply only to Florida species. Penis with 0-6 papillae confined to right margin (Figs. 62). Spire short and compact, about 0.5-0.7 times height of aperture in mature specimens, proportionally longer in juveniles (Fig. Floridobia wekiwae (This character separates only the genera under consideration; genera from other areas of the world do not conform to this distinction.) Floridobia fraterna Operculum tightly coiled with four slowly expanding whorls (Figs. The species of snail was present in Florida in the 1960s and 1970s before being eradicated in 1975, the FDACS said. Purple-throated Campeloma Lyogyrus retromargo Marsh Sprite 1905. Females with an egg-laying groove or sinus on right side of foot; eggs deposited on substrate. Occasionally it may be necessary to turn to other information sources to determine identifications with a greater degree of certainty.. 1956. 16 Different Types of Snails: Ultimate Guide (With Pictures) Prominent minor spiral sculpture along periphery. Interior of adult aperture with brownish tinge. Spilochlamys gravis 86). Thompson, F. G. 2000. Click on any of the seashell identification photos for information about each shell, where they were found, who found these shells and so much more. 130). Outer lip of aperture strongly sinuous in lateral profile (Fig. Incremental striations intensified near nucleus and umbilicus. Penis with a large, blade-like flagellum with continuous heavy dermal glands along each side (Figs. (C.B. Shell usually elevated, but variable. The species was eradicated again in 2021 after being detected in 2011 in Miami-Dade County, according to FDACS. 83). Umbilicus narrow (Figs. Aperture terminating below periphery of body whorl. Those available covered only part of the state or part of the fauna. The LIOPLACINAE is endemic and include Campeloma, Lioplax, and Tulotoma. Carib Physa Fighting a new infestation of an invasive, crop-damaging snail, Florida agriculture officials on Thursday said they have collected 1,000 of the creatures in just over a week in Pasco County, where they were recently discovered following two years in abeyance. Penis with a very long slender flagellum that extends beyond terminal lobe. Freshwater snails (Mollusca: Gastropoda) of North America. 75, 76). (Fmr.) Curator of Malacology. (Thompson, 1968). (Frauenfeld, 1863). (Lea, 1862). (Pfeiffer, 1839). Shell large, 80-100 mm wide. Numerous species of exotic snails are serious pests of plants and threats to public health. Your choice will lead you to the proper identification of your snail or the next appropriate pair of questions. Radial striations present or absent Laevapex Walker, 1903. In the USA, it was first identified in New Orleans in 1939, but now is found in the Gulf Coast states from Florida to Texas, as well as in Puerto Rico and Hawaii. Shell conical or globose-conical; thin, translucent, occasionally opaque. Campeloma floridense 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. Dasyscia franzi Littoridinops is found most frequently in brackish water, although the three species found in Florida also occur in frehswater. Two, Melanoides tuberculata and Tarebia granifera, are medically important because they can serve as first intermediate host for the human lung fluke, Paragonimus westermani. (Thompson, 1968). (Thompson, 1968). (Thompson, 1969). Umbilicus of shell closed. Choctawhatchee Elimia common name: tree snails of Florida scientific name: Gastropoda: Stylommatophora: Bulimulidae Introduction - Identification - Key to the Bulimulidae of Florida - Selected References Introduction (Back to Top) Many snails are found in trees, but only a few are exclusively arboreal for most or all of their life cycle. 2018). Giant Snails Invading Florida, "Major Threat" to Crops Marsh Rams-horn Parietal margin of operculum slightly convex in outline (Fig. Pest alert: Invasive horntail snail found for first time in South Florida Body whorl inflated. 16, 29). Like. Length of shell up to 5 mm. Conical Siltsnail Shell moderately large, 3.7-4.5 mm long; spire 1.00-1.35 times length of aperture; shell with 4.8-5.4 whorls. Identification of Marine Snails - Coral Ever After (Thompson, 2000). Penis filament black. (Walker, 1908). Adequate preservation begins when the specimens are collected. Thompson, F.G. 1979. Freemouth Hydrobe shell with 3.9-4.2 whorls (Fig. Umbilical perforation narrow, 1/8 1/10 diameter of shell. (Vail, 1979). Floridobia helicogyra (Fig. 137, 139). (Pfeiffer, 1839). Bulletin of the Environmental Protection Agency, EPA-600/3-82-026: i-vi, 1-294. Shell cylindric-conical with 4.5-5.0 whorls. Apex fairly prominent as a rounded knob in the right posterior quadrant (Figs. A giant African land snail, photographed at a lab in 2014. Nuclear whorl flattened, 0.41-0.48 mm in diameter transverse to initial suture. Floridobia mica Ferrissia hendersoni Penis with invaginated cave-like pit within U-shaped superior tubercles. 164, 167). U.S. Florida Invasive species. Graphite Elimia Florida Shell Guide | 2FLA Florida's Vacation and Travel Guide It occurs in India, Sri Lanka, Bangladesh, Nepal, Pakistan and Brazil (Figure 1) (Raut and Ghose 1984; Biswas et al. 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. 67). Bulletin of the Florida State Museum, Biological Sciences, 1: 97-239. Aquatic; moves by gliding motion. 36). When trying to identify the type of snail, the easiest method is to check it out closely. The number of subfanilies recognized in the Hydrobiida is unsettled. 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. Shell sculptured with prominent nodes overlapping suture and forming crenulations. Thompson, F. G. 1982. Outer lip less sinuous. 14), was introduced into a fishpond in St. Petersburg about 1921 and into lakes in Orlando about 1940. Dorsl surface of penis with a few elongate superior tubercles that form a weakly defined U-shaped pattern. Spire of adults with heavy vertical ribs; unicolor dark brown; usually less than 18 mm long (Figs. Do not use tap water since copper ions from the plumbing system may contaminate the tap water and kill the snails prematurely. Land snail | gastropod | Britannica Shell conical, spire moderatly high. 1945. A systematic study of the Family Physidae (Basommatophora: Pulmonata). Gainesville, Florida 32611-7800. 180-193). Shell larger, thicker, and opaque; spire 0.9-1.3 times length of aperture; with more than 4.2 whorls; penis flagellum with glandular crests. Campeloma parthenum (Gastropoda: Viviparidae), a new species from north Florida. Clench, W.J., & S. L. H. Fuller. Published April 18, 2013 Shell elongate-conical; 10-40 mm long in adult specimens; apex of spire usually eroded; shell with 8-12 whorls although eroded specimens may have fewer; shell usually strongly sculptured with spiral and/or vertical ribs and threads (except in Elimia dickinsoni); central tooth of radula without basal or lateral cusps (Fig. Dense Hydrobe Two new species of hydrobiid snails from Florida and Georgia, and a discussion of the biogeography of south Georgia streams. Invasive giant snail species that carries deadly parasite detected in In the event that only shell specimens are available, picture-matching may be necessary to eliminate some choices in the couplets. Body whorl rounded (Fig. Hatia pomilia hendersoni Jan. 28, 2020 . 146). Aphaostracon theiocrenetus Waccasassa Elimia Definitive identifications may require anatomical dissections and reference to other literature. Aperture enlarged (dilated). Nuclear whorl slightly protruding, 0.29-0.41 mm in diameter transverse to initial suture. Pomacea paludosa Tarebia granifera Planorbis alabamensis and dilatatus in the Floridian Pliocene. Only three widely distributed species occur in Florida. Shell elongate with pointed conical spire. 56). Accessory crest present. Shell sculptured with fine spiral striations, and in some cases curved axial ribs. Length of shell 2.0-2.4 mm (Fig. Whorls 3.8-4.3. 58). Penis with 5-15 papillae along right margin arranged in 1-2 rows (Fig. Shell thin, fragile, very much depressed, less than 0.25 times as high as long. The HYDROBIIDAE include over 200 genera and approximately 1000 species. Snails and Slugs - Gardening Solutions - University of Florida Spire usually about equal to or greater than height of aperture (Figs. 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. Blackwater Ancylid (Vanatta, 1935). Shell smooth. 169, 172). Shell with or without bands; slender; Suture deeply impressed; upper whorls with a strongly carinate periphery (Fig. Goodrich, C. 1942. (Pilsbry and Johnson, 1903). Papilla with a duct that leads to a blind caecum in nape of snail. Whorls globose, with a deeply impressed suture. Body whorl relatively narrow, not conspicuously enlarging near aperture (Fig. 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. Florida Applesnail Female shell about 4-6 mm long (Figs. 131). Taylor (2003) monographed the family Physidae. 100). Shell sculpture with incremental striations only. Aperture non-operculate; mantle cavity modified into a lung. Shell short and stocky. A parasite that can cause fatal disease in people and animals has been detected in South Florida (South Florida Sun-Sentinel) A dangerous parasite found in the giant African land snails that. They are beautiful when they are alive because the body of the snail is black with tiny white dots like the milky way galaxy. Vas deferens the only duct present in penis (Fig. Thompson, F. G. 1983. It could take years to fully rid the state of the species, officials say. Transparent white (Fig. Average length about 5.5 mm (Figs. In 2011, a population of the pests was discovered in Miami-Dade County. Periphery of last whorl bluntly angular, lying below plane of apex (Figs. Florida. Planorbella duryi Goldenhorn Marisa terrestrial snails affecting plants in Florida - University of Florida The lightning whelk ( Busycon sinistrum) is one of the larger univalve snails found in Florida waters. Sculpture consisting of axial striations only (Fig.147). Three new freshwater snails of the genus Cincinnatia from peninsular Florida. 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. Nat. Cymbal Ancylid Aphaostracon rhadinus Lymnaeids are a nearly cosmopolitan family of freshwater snails. Interior of aperture livid white. Frequently the shells of ampulariids and viviparids are very similar. 115, 116). Red-rimmed Melania Umbilicus narrow, deep (Fig. Spurwinkia: Morphology, systematics, and ecology of a new genus of North American marshland Hydrobiidae (Mollusca: Gastropoda). 1979b. Hebetancylus excentricus Bugle Sprite Kites belong to the same bird family as hawks and eagles, Accipittridae. Olive NeriteNeritina usnea(Reding, 1798). Planorbella scalaris Laevapex peninsulas The giant African land snail is back in Florida after having been declared eradicated twice. 24, 27). The family contains numerous genera and species, some of which are important medically as intermediate hosts for trematode parasites. 2002. Rasp Elimia Three other species occur farther north. 81-83). Fawn Melania Shell smaller, generally less than 12 mm long. Giant African land snail, Florida: Pest, parasite, meningitis concerns 117). Additional genera occur in the Orient, Southeast Asia, Africa, and South America. Nautilus, 97: 68-69. Operculum with about 6 slowly expanding whorls (Fig. Shell 2.8-3.7 mm long. Bright pink egg masses are laid on . Snails on corn. 160, 163, 166). (Lea, 1842). This family contains twelve genera in North America. The best times to look for shells are after a high tide, after a storm, in the morning, and during the winter months. Amnicola is a widespread genus in temperate North America. Click on images to enlarge them. Last whorl flattened above. 89). Enterprise Siltsnail) Floridobia monroensis (Dall, 1885). 7-9). 89, 90). Shell usually marked with red or rust-colored spots, flames, or bands (most apparent on juvenile specimens). Unlike other brown-tinted giant snails, this. Shell moderately elevated, over 0.25 times as high as long. 120). Suture deeply impressed. Inside of lip with or without a reddish callus but callus never dark red in color. Seminole Siltsnail Penny Sprite) Micromenetus floridensis (Baker, 1945). Apical whorls depressed; body whorl obtusely angular above and sharply carinated around funnel-shaped umbilicus. Vertical ribs smooth along the periphery, strongly developed (Fig. 95). Shell conical, thick, opaque. PDF Giant African Land Snail Identification Sheet - Florida Commissioner of Shell highly variable in shape; freshwater forms olivaceous or brown; adults with about 4.5-6.0 whorls; about 3.5-4.5 mm long (Fig. Shell brightly banded and with large, wide and wavey vertical folds; robust, usually 21-25 mm long (Fig. The latter genus includes a single species, Cincinnatia integra (Say, 1817). There were no references to cover the entire state. Shell elongate conical, spire high. Land Snail (Bulimulus sporadicus)A large group of Bulimulus sporadicus found in the Florida panhandle. Adults about 15-18 mm wide with about 5.5 whorls (Figs.183-185). Thin and translucent or transparent. The latter are placed in a small container filled with pond water. Choctaw Lioplax Aperture narrow, about half as wide as high. Shape highly variable, usually disc-shaped but some specimens with flat-topped raised spire. 80). This is not the first time Florida has dealt with an invasion of giant snails. Whorls of spire pointed and scalariform (steplike with nearly flat shoulders and deep sutures). Baker, F.C. Attains a length of about 30-36 mm (Figs. 197-209). 1918. The focus on most investigations was on rivers north of Florida, and little attention was given to the Florida fauna. Each: $28.50 M-890 BANDED TULIP SHELL, Fasciolaria lilium A small predatory snail that feeds on clams. Shell nearly smooth, sculptured with irregular growth striations. Sculpture consisting of incremental striations only. 60). Plane of aperture nearly vertical when viewed from the side. Florida announced on Wednesday it has eradicated the African giant land snail - an invasive species that can destroy homes and infect people with meningitis - for the second time. Color of fresh shell never milky white. Florida applesnail (Pomacea paludosa) - Species Profile - USGS This manual recognizes 113 species and subspecies that occurring in Florida and the list will increase with time. Florida is trying to eradicate the giant African land snail, again Spiral or costate sculpture usually present. 17, 29-32), shell usually banded in Florida forms. Shell large, 3.7-4.5 mm long; adults with 4.6-5.3 whorls; lower corner of aperture slightly extended forward as a weak, tongue-like projection (Fig. Penis with 2 or 3 papillae on left margin (Fig. Florida Shell Guide. Their siphonal canal is merged with their aperture and called a "siphonal notch". 16, 25, 28). Two Land Snails from Florida - What's That Bug? Shell more slender and attenuate; spire more elongate in adults, about 0.7- 1.0 times height of aperture. CLICK ON EACH PHOTO Fallen Angel Wing -Atlantic Mud Piddock Boring Angel Wing- Striate Piddock Rice Olive Vas deferens independent of blind caecum and its duct. Most inhabit fresh water, but some also occur in brackish water. Brownish-yellow in color (Fig. Florida's . Thompson, F. G. 1969. Miscellaneous Publication of the Museum of Zoology, University of Michigan, 6: 1-213. Apex in the posterior right third, domelike and evenly rounded. Adults with about 5 whorls, and 10-13 mm wide (Figs.177-179). Melanoides turricula Aperture comma-shaped, tightly appressed against preceding whorl. (Mihalcik & Thompson, 2002). Apex of shell flat, though it may be raised above the periphery of the last whorl (Figs. Female oviparous, never with embryos in uterus. This revision follows the classification proposed by Taylor. The genus is found along the east coast of North America from Maryland south to Tabasco, Mexico. 60). Shell with 3-4 whorls. Inferior crest usually present. Basch, P.F. (Thompson & Hershler, 1991). Giant African Land Snails Discovered in Florida | Field & Stream Fingers crossed, it'll stay that way. Columellar margin of aperture very thick but not reflected over umbilical area (Fig.103). Umbilicus open, although very narrow in some species; occasionally closed. Click on the link in the row that best matches your snail. 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. Armored Siltsnail (Thompson, 1968). i-xxxvi, 1-530 pls. Florida authorities believe that the snail, native to eastern Africa, was reintroduced to the state when someone brought it home as a pet. Whorls flat-sided with suture weakly impressed. Aperture broadly in contact with preceding whorl. Some species that are endemic to Florida springs live in environments with nearly constant temperatures and apparently reproduce continuously throughout the year. 1-69. Aphaostracon pycnus Penis with different arrangement of papillae than above. Shell sculptured with very fine, uniformly spaced axial threads (Figs.168-170). 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. 22). Base of shell when viewed from below showing about half of preceding whorl due to straight basal lip (Fig. 19-21). Mantle diffusely pigmented or unpigmented. Micromenetus brogniartiana (Thompson, 1968). File Campeloma Penis with 3 papillae along right margin (Fig. 2015; Agudo-Padron 2018). It is represented in North America by Viviparus. Females ovoviviparous or oviparous. Operculum with concentric growth rings around nucleus (Figs. TALLAHASSEE, Fla. (AP) Florida, a state that encourages people to kill non-native iguanas, pythons and lionfish, has a new invasive species to worry about: the horntail snail, which has never . Gray to brownish-yellow in color. Marginal teeth of radula spatulate and bearing 8-10 weakly differentiated cusps. "If you see one of these snails,. M-879 CONE SNAIL, Conus floridanus A small and less poisonous species, no one has ever died or been stung by one of these slow-movers, but like all cones, they have a venomous proboscis. 112), occurs in the Ocmulgee River system in Georgia. Last whorl distinctly shouldered. Campeloma limum Brown Garden Snail | College of Agricultural Sciences They complete their life cycles in one year. The family contains many genera and numerous species in South America, Central America, Mexico, Africa, and Southeast Asia.