Body whorl relatively rapidly expanding in diameter (Fig. 16, 29). 4, 5). Goblin Elimia) Elimia vanhyningiana (Goodrich, 1921). Slackwater Elimia Floridobia petrifons Define Invasive Species: must have ALL of the following -. 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. 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. The genus is difficult to diagnose by shell characters because the three species are very dissimilar. The fixative may damage the shell, but that is unimportant for anatomical purposes. Native and Invasive Land Snails - Rare, Beautiful & Fascinating 16, 17). An investigation by FDACS Division of Plant Industry found multiple positive sites with the snail in Miami-Dade County. Four species currently are recognized, but the genus has received very little study over most of its range. (Fig.114). Pewter Physa Adults with about 5 whorls, and 10-13 mm wide (Figs.177-179). The state says a "gastropod enthusiast" collected unusual snails in the Coconut Grove area back in August. (Clench, 1925). Last few whorls in large adults scalariform. Umbilicus open. 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. 102a, 102b). (Thompson, 1968). 1992. 180-182). (Lea, 1842). Two-ridged Rams-horn Freemouth Hydrobe Maiden Campeloma 1945. Shell usually marked with red or rust-colored spots, flames, or bands (most apparent on juvenile specimens). Revista de Biologia Trpical, 51 (supplement): 1-299. Walkerana, 1: 81-365. EENY148/IN305: Tree Snails of Florida, Drymaeus - University of Florida Whorls of spire weakly scalariform, causing the suture to be deeply incised. 35). 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 . Vail, V. A. Lobe and flagellum with various patterns of dermal glands (Fig. Shell with 5.6-6.8 whorls; about 3.2-4.5 mm long (Fig. (Thompson, 1968). (Haldeman, 1841). Shaggy Ghostsnail Like. Shell squat, compact, cylindric-conical in shape, thick and opaque. Aperture relatively ample (Figs. 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. The manual treats only those genera that occur in freshwater. Penis with a large, blade-like flagellum with continuous heavy dermal glands along each side (Figs. Our beaches often rank at or near the top in the world. Penis with papillae along both margins, or right margin only (papillae absent in some Aphaostracon). Shell sculptured with fine spiral striations, and in some cases curved axial ribs. Giant Snails Take Over Florida's Gulf Coast Again - Smithsonian Magazine Shell short and stocky. 60). Penis with different arrangement of papillae than above. Snails on corn. Florida's Apple Snails | FWC - Florida Fish And Wildlife Conservation Size smaller than last species, seldom exceeding 10 mm in width (Figs.194-196). The lymnaeid fauna of the southeast is particularly depauperate compared to more northern and western regions of the continent. 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. (Sowerby, 1878). Three species in Florida were introduced from Southeast Asia. Last whorl flattened above. This snail was twice established in southeastern Florida and was successfully eradicated both times. 83). Amnicola rhombostoma The Florida Department . Sculpture variable. Shell grayish-white. Apex of shell flat-topped, but sunken below periphery of last whorl. Since then a great amount of fieldwork has taken place throughout Florida, and many additions to the fauna have come to light. Thompson, F. G. 1997. 117). 89). Shell coiled to the right, with the aperture on the right side (Figs. 2015; Agudo-Padron 2018). The snails live in the bays and mudflats, but after they die their shells wash up on the beaches. 123). Suwannee Hydrobe Teardrop Snail Aperture elliptical and loosely attached to or slightly separated from preceding whorl; 4.5-4.9 whorls. Operculum constructed entirely of concentric rings (Fig. Shell without conical spines, although spiral threads may be present. Identification KeysThese files are all keys for the identification of various kinds of organisms. This family contains twelve genera in North America. Pest alert: Invasive horntail snail found for first time in South Florida This genus contains three species. Shell conical to ovate-conical. Planorbella trivolvis intertexta Planorbid snails are restricted to fresh water and occur worldwide, being found on all continental landmasses and many oceanic islands. Freshwater Snails of Florida ID Guide - Invertebrate Zoology Two species occur in Florida. Fred G. Thompson (1934-2016) Radula with bicuspid lateral teeth (Fig. Vail, V. A. Paper fig A Florida Gulf Coast specialty shell! Only genera that enter fresh water are treated. 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. Length of shell 2.1-2.8 mm (Fig. They are commonly found on live aquatic plant stems, dead leaves and sticks, and on bottles and cans. A single glandular crest present on apex of terminal lobe (Figs. Adults 9-15 mm wide (Figs. Waccasassa Elimia Taylor (2003) monographed the family Physidae. 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. Shell medium-sized, 2.8 3.5 mm long; spire 0.9 1.1 times length of aperture; shell with 4.2-4.7 whorls (Fig. The shell are secondarily useful for identification, but only when supplemented with anatomical information. 1982. This causes problems in species identification and yield an undermeasure of the actual number of species that exist in nature. Identification of Marine Snails reefdup Identification, Snails July 3, 2020 Cerith, Collonista, Collumbellid, Conch, Limpet, Nassarius, Nerite, Ninja, Pyramidellid, Snail, Stomatella, Turbo, Vermetid 3 Comments Marine snails come in all shapes, sizes, colors, and function, so proper identification is crucial! Types of Shells In Florida: Seashell Identification Guide It lurks nearly a foot beneath the dunes of Sanibel Island. Amber to milky white in color (Figs. It could take years to fully rid the state of the species, officials say. Land Snail (Bulimulus sporadicus)A large group of Bulimulus sporadicus found in the Florida panhandle. RELATED: Proof of megalodon extinction is in their teeth, scientists say. Penis without a conspicuously enlarged papilla near right base, although other papillae usually are present. Sides of spire straight in lateral profile. Shell sculpture with incremental striations only. In 2011, a population of the pests was discovered in Miami-Dade County. Florida eradicates eight-inch snail for the second time in 10 years Two new species of hydrobiid snails from Florida and Georgia, and a discussion of the biogeography of south Georgia streams. Shell conical or cylindric-conical. They are beautiful when they are alive because the body of the snail is black with tiny white dots like the milky way galaxy. Sculpture consisting of fine incremental threads, and spiral striations that may become obsolete at maturity. Bulletin of the Environmental Protection Agency, EPA-600/3-82-026: i-vi, 1-294. 86). In Florida four types of Campeloma have been recognized. 47). 85). Regal Hydrobe Shell larger, reaching a maximum diameter of 18 mm. More data based on many population samples from throughout this range will be necessary before the validity of the three forms can be determined. 89, 90). Shell with or without bands; slender; Suture deeply impressed; upper whorls with a strongly carinate periphery (Fig. (Thompson, 1968). (Fig. Shell unicolor, with distinct vertical sculpture in addition to strong spiral sculpture. It is globose in shape, body whorls are wide, spire is depressed, and the aperature is narrowly oval (Burch 1982). (Fig. Shell unicolor brown, never mottled with reddish spots. Pyrgophorus platyrachis Apex about 0.4-0.5 times length of shell. Pygmy Siltsnail) Floridobia parva (Thompson, 1968). They have been found in extremely high numbers in some crop fields, including corn, cotton, and peanuts, in home gardens, and around farm . Sci. 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 . Base of shell with dark red spiral band. Parasite colonizing Florida snails could pose health risk - UPI 66). In 1976 in the St. Johns River 1 found Melanoides tuberculatus with population densities of 10,000/m2. Over 500 species of Elimia have been described, most on the basis of shell characters. Snail Kite: Species Profile - National Park Service Apex nearly straight-sided or concave in outline. Slough Hydrobe Periphery of last whorl bluntly angular, lying below plane of apex (Figs. Spire of adults with heavy vertical ribs; unicolor dark brown; usually less than 18 mm long (Figs. Florida Cone (Family) Conidae Distinguishing Characteristics: The Cones are easily identified by the distinctive cone-like shape and a long aperture that reaches up to their shoulder. Shellolive-colored; spire straight-sided. Shell usually with raised spiral threads around periphery, frequently the uppermost thread has conical or triangular spines (Figs. Thompson, F. G. & R. Hershler. Shell usually large, about 12-16 mm long. NERITIDAE The snails remain a threat in Hawaii and the Caribbean after their eradication in Florida in 2021. Many North American snail species were described near the turn of the century by Walker (1918). 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. Apex slightly behind and slightly to the right of midline. Physella gyrina aurea Outer lip straight in lateral profiles. Penis with 0-6 papillae confined to right margin (Figs. Shell with 4.4-5.0 whorls; about 3.7-5.2 mm long. Some hydrobiid snails from Georgia and Florida. The first edition of The Freshwater Snails of Florida: a Manual for Identification was published in 1984. Umbilicus broad, shallow (Fig. (Thompson, 1968). Vertical sculpture reduced to irregularly spaced and uneven growth striations or low undulating ribs. Vas deferens the only duct present in penis (Fig. (Say, 1829). Florida races to catch giant African snails, with the help of sniffer Most freshwater hydrobiids in the eastern United States are annual species. 3). Shell of various shapes and sculpture. Umbilicus of shell closed. Many have been synonymized, some undeservingly so. 119). Euglandina rosea, the rosy wolfsnail or cannibal snail, is a species of medium-sized to large predatory air-breathing land snail, a carnivorous terrestrial pulmonate gastropod mollusk in the family Spiraxidae.. 202, 208). Shell variable in shape, elongate to globose; usually not more than 5 mm in length; apex of spire seldom eroded (except in Somatogyrus); 4-6 whorls; shell smooth (except in Pyrgophorus and Tryonia); central tooth of radula with basal cusps (Figs. File Campeloma Thicker leaves may have damage on only one side. Adequate preservation begins when the specimens are collected. It is believed the snail was introduced via the railway cars coming from Mexico. Freshwater snails (Mollusca: Gastropoda) of North America. Shell usually elevated, but variable. Pomacea paludosa 148). Shell translucent. Elimia doolyensis Most have monotonously simple, conical or depressed-conical shells that are nearly devoid of taxonomically useful characteristics. 125); accessory crest absent on penis. Outer lip less sinuous. The radula is then thoroughly rinsed in distilled water, stained, and mounted on a microscope slide. Spilochlamys gravis Viviparus contectoides limi, new name for V. c. compactus Pils. Sculpture consisting of axial striations only (Fig.147). A Guide to Florida Bird Species | VISIT FLORIDA Shell relatively thick (Figs. As of last . The LIOPLACINAE is endemic and include Campeloma, Lioplax, and Tulotoma. One species occurs naturally in Florida, and three others have been introduced. Channeled Applesnail It occurs in India, Sri Lanka, Bangladesh, Nepal, Pakistan and Brazil (Figure 1) (Raut and Ghose 1984; Biswas et al. Laevapex fuscus Shell with strong vertical ribs on spire; spiral chords vestigial, confined to spiral series of knobs on top of vertical ribs; adults small, about 13-16 mm long (Fig. Whorls generally arched. Marisa cornuaurietus 131). Identification Damage from snail and slug pests appears as oblong, irregular holes at both the margin and the center of leaves and flowers. Apical whorls raised to form a point on top of spire. Though small, this elusive specimen is a rare and valuable jewel, waiting to be discovered. (Lea, 1838). Brackish-water genera, Onobops and Heleobops, that are common in Florida are omitted. Snails, Whelks, Conchs - Gulf Specimen Marine Lab Acad. Radula with tricuspid lateral teeth (Fig. 70). 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. Planorbella duryi The species was eradicated again in 2021 after being detected in 2011 in Miami-Dade County, according to FDACS. 51, 52). Floridobia fraterna Shell thick and solid; whorls weakly convex or flattened (Figs. Essentially identical shells occur repeatedly among unrelated genera and subfamilies. Mantle richly marked with reddish-brown blotches and spots. Ferrissia mcneilli Sides of spire slightly convex. 113). Apex fairly prominent as a rounded knob in the right posterior quadrant (Figs. Shell cap-shaped or limpet-like with a wide, open aperture forming base of shell (Figs. This subfamily includes about fifteen North American and European genera (Thompson 1979). 75). Introduction to the Physidae (Gastropoda, Hydophila): biogeograhy, classification, morphology. Additional surveys found four different populations all associated with the CSX railways. Shell thin, fragile, very much depressed, less than 0.25 times as high as long. Lioplax pilsbryi pilsbryi About fifteen species have been described from North America. Lymnaeids are a nearly cosmopolitan family of freshwater snails. Aperture narrowly in contact or free from preceding whorl. North American freshwater snails: species list, ranges and illustrations. Shell minute, 2.0-2.3 mm long; thin and transparent; spire 0.7-1.1 times length of aperture; flagellum lacking glandular crests. 68). In others, some or all populations may be parthenogenetic, consisting only of females, or they may have a disproportionately small number of males. (Say, 1829). Aquatic; moves by gliding motion. Embryonic shell smooth, without spiral chords (Fig. (Conrad, 1834). 5: 1-140. Floridobia leptospira Malacological Review, 12: 41-49. (Fmr.) Floridobia wekiwae The species made a return in 2011 and eradication efforts took another ten years. Marsh Sprite Mesa Rams-horn Giant African Land Snails Cause Quarantine in Florida County - Peoplemag Click on images to enlarge them. 2002. (Thompson, 1968). Goodrich, C. 1942. "If you see one of these snails,. In some genera, eggs are deposited above the water in dry clusters on stems, trees, walls, etc. Floridobia alexander Most species are disc-shaped or planular, as is implied by the name PLANORBIDAE. Shell sexually dimorphic in size, males about one-third as long as females. 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 159). Shell more slender, about 0.30-0.35 times as wide as high. Amnicola dalli. 170). Length of shell 2.4-3.4 mm (Fig. Aperture broadly attached to preceding whorl across parietal wall. Shell keeled or strongly angular at the periphery (Figs. 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. Shell with three whorls. Shell planular or disc-shaped; spire flat when raised above succeeding whorls (Figs. 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. Gulf Coast Pebblesnail) Somatogyrus walkerianus (Aldrich, 1905). 61). Shell elongate. Tarebia granifera The greatest diversity of genera and species is in the Indo-Australian region. Cymbal Ancylid Hood Ancylid Spiral sculpture faint or absent (Figs. On June 24th the Florida Department of Agriculture and Consumer Services (FDACS) created a quarantine surrounding the town of New Port Richey. U-shaped superior crest not enclosing longitudinal crests. Ampullariids have been referred to as PILIDAE in earlier editions of this manual. 34); penis frlattened, blade-like (Fig. 33); males without copulatory structures. 159, 162, 165). 162). Columellart margin of aperture not flat-faced; apex of shell usually entire; penis with large terminal lobe on left side and small appendage-like flagellum on right margin (Fig. (Fig. 24, 27). Marginal teeth of radula trapezoidal with well-differentiated cusps. 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. Transparent white (Fig. Micromenetus brogniartiana Outer lip of aperture nearly straight in lateral profile (Figs. The specie prefer quite clear water, of lakes and backwaters of streams andsprings. Tadpole Physa They achieve their greatest diversity in genera and species in temperate North America. (Vail, 1979). Vertical ribs smooth along the periphery, strongly developed (Fig. 1, 2). Occasional Papers of the Museum of Zoology, University of Michigan, (456): 1-6. Macroinvertebrate Taxonomic Keys | Florida Department of Environmental Thompson, F. G. 2000. Attains a length of about 30-36 mm (Figs. Shell elliptical-ovate in shape. 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. The spire differs between bumpy and smooth but it is always elongated. Three species are known from rivers entering northwest Florida from Georgia and Alabama. Pseudotryonia brevissimus Penis with 5-15 papillae along right margin arranged in 1-2 rows (Fig. Florida Shell Guide | 2FLA Florida's Vacation and Travel Guide Rather stocky, adult about 15-20 mm long (Fig. Body whorl uniformly rounded peripherally (Fig. 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. These are white, which is the more prized color in. Apex of shell flat, though it may be raised above the periphery of the last whorl (Figs. Body whorl strongly keeled as though pinched at the periphery (Figs. Live snails for shell studies should be preserved in 70 percent alcohol. Unlike other brown-tinted giant snails, this. Fenney Spring Hydrobe Ovate Campeloma 197-209). Identifications are difficult in many instances without properly preserved specimens. Similarities in appearance among the exotic species can make identification very difficult. Additional genera occur in the Orient, Southeast Asia, Africa, and South America. Shell conical with strongly arched whorls and a deeply impressed suture. One species, C. chinensis malleatus (Reeve, 1863) (Fig. This is particularly so in the Pulmonata. Penis with one papilla on left margin (Fig. (Linnaeus, 1758). It is essential that clean specimens be examined under proper lighting to observe diagnostic sculpture characteristics. Ancylid gastropods are small, fragile limpets found in most freshwater habitats. (Morelet, 1851). Shell conical to elongate-conical; whorls 4.0-4.5 with a deeply impressed suture. (Frauenfeld, 1863). Whorls 3.8-4.3. Some species that are endemic to Florida springs live in environments with nearly constant temperatures and apparently reproduce continuously throughout the year. Cone Snails - Central and South Florida Gastropod Seashell Conical Siltsnail Florida authorities believe that the snail, native to eastern Africa, was reintroduced to the state when someone brought it home as a pet. Spiral or costate sculpture usually present. 7 new spider species . (Jay, 1839). Basch, P.F. (Say, 1817). (The penis is normally recurved into the mantle cavity, except during mating. Campeloma floridense Shell slender, attenuate. Rock Fossaria Florida Horse Conch ( Triplofusus giganteus) is the largest snail in North America and is Florida's state shell. (Weatherby, 1879). 16, 22-28). (Thompson, 1968). Excentric Ancylid Invasive snails that already cost FL $24 million are - Florida Phoenix The Giant African Land Snail Has Been Spotted Again in Florida Aperture loosely attached to or widely separated from preceding whorl. The Florida Department of Agriculture and Consumer Services has mapped out a . Walkerana, 13: 1-108. Suture deeply impressed. Shell elongate conical, spire high. Bayou Physa They're different than the ones found previously. Malacological Review, 24: 55-72. Aperture oval, about 0.75 times as wide as high. Amazing snails - Sea snails of Florida - Google 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. 87). Aperture free from, or only in slight contact with, preceding whorl. Elimia floridensis Clench, W.J., & R. D. Turner. 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. Aperture moderately oblique. 130). The current status of these introductions is not known. The bulimulids of Florida have ovate-conical or bulimoid shells that at maturity range in size from 15 mm to 70 mm. 95). Opercula should be glued to cotton plugs and replaced within the aperture. Conical with relatively slender whorls. 81). Umbilicus closed. Nuclear whorl 0.29-0.33 mm in diameter. (Pilsbry and Johnson, 1903). 170, 173). Shell with about 4.5-5.0 whorls; about 3.0-4.8 mm long (Fig. Rasp Elimia Six Rivers CISMA EDRR Invasive Species of the Month - Bulimulus Basch (1963) revised the classification and recognized only twelve species. (Thompson, 1968). 169, 172). Enterprise Siltsnail) Floridobia monroensis (Dall, 1885). 45). In others they are deposited in the water in gelatinous clusters. The aquatic snails of the Family Hydrobiidae of peninsular Florida. Umbilicus widely perforate, accentuated by a strong circum-umbilical keel. 137, 139). Plane of aperture nearly vertical when viewed from the side. The International Commision on Zoological Nomenclature has ruled that AMPULLARIIDAE is the valid name for this family of snails. 174-176). Haitia bermudezi Sculpture consisting of distinct spiral striations and threads superimposed on growth striations (Fig. Lioplax pilsbryi choctawhatchensis It is important to save some specimens for anatomical studies. (Couper, 1844). Dipping them in a dilute solution of oxalic acid and gently scrubbing them with a fine brush can clean such specimens. (Fig. The planorbid fauna of the southeastern states is particularly poorly known. Suture relatively shallow. Mantle spotted with black, shaded or unmarked; terminal lobe of penis with complex crests that cause it to look like an animals head; flagellum slender, with scattered and discontinuous glands along edge (Figs. 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. Littoridinops palustris Outer lip nearly straight and parallel to axis of shell in adults (Fig. Shell minute, 2.4-2.7 mm long; adults with 3.9-4.2 whorls; spire short, 0.8- 1.1 times height of aperture (Fig. 37), which is important for generic and specific diagnosis. Aperture enlarged (dilated). 34, 35) (Pomatiopsis, Fig. Veliger, 45:269-271. 110). Penis as illustrated (Fig. 15). Florida Press, Gainesville: i-xv, 1-68; pls. Land snail | gastropod | Britannica Nautilus, 97: 68-69. 1969. Generally with distinct axial and spiral striations. Conical with relatively obese whorls. Arboreal forms, such as Liguus of Florida and Cuba, tend to be brightly coloured; terrestrial forms usually are drab. J. Clench and Ruth P. Turner (1956) published a survey of the fauna from the Suwannee River west to the Escambia River. Shell relatively thin. This is not the first time Florida has dealt with an invasion of giant snails. Stately Elimia A preliminary revision of Florida Lioplax (Gastropoda: Viviparidae), with a description of Lioplax talquinensis n.sp. 116a, 116b). Laevapex is a North American genus. Body whorl inflated. Spire short and compact, about 0.5-0.7 times height of aperture in mature specimens, proportionally longer in juveniles (Fig. Occasionally it may be necessary to turn to other information sources to determine identifications with a greater degree of certainty.. Shell transparent or translucent. Snails have Invaded the Western Panhandle The bodies of large snails, such as viviparids and pilids, should be pulled from the shell. Work through the questions, each time choosing the characteristic that best matches your snail from the two choices. 63). 22). On sibling species and genetic diversity in Florida Goniobasis (Gastropoda, Prosobranchia, Pleuroceridae). Thompson, F. G. & R. Hershler. Fortunately in Florida, the species are relatively easy to distinguish. In Pasco County Florida, a quarantine order was issued for people after the re-discovery of the giant African land snail, an invasive species that can harm to humans, structures, and wildlife. Amnicola is a widespread genus in temperate North America. Another variety, with cream-colored flesh and mottled brown shells, was detected in 2022. Credit: Craig Pittman. Periphery of body whorl below middle, side of whorl flattened and sloping toward apex (Fig. 77-79). Seashell Identification Identify your Florida Gulf Coast seashells! Aphaostracon monas Flatwood siltsnail (Thompson, 2000).