7 new spider species . An investigation by FDACS Division of Plant Industry found multiple positive sites with the snail in Miami-Dade County. 1918. Weak spiral striations present on top of growth striations (Figs. Vail, V. A. Since then a great amount of fieldwork has taken place throughout Florida, and many additions to the fauna have come to light. Introduction to the Physidae (Gastropoda, Hydophila): biogeograhy, classification, morphology. Aperture strongly oblique. Accessory crest present. Florida Shell Guide. Micromenetus dilatatus avus (Pilsbry, 1905). Aperture rhomboid; baso-columellar angle extended as slight tonguelike projection; basal lip broadly but shallowly indented (Fig. (Say, 1825). Vertical ribs smooth along the periphery, strongly developed (Fig. 16, 17). Penis as illustrated (Fig. Indented Duskysnail Shell small, 2.0-2.8 mm long. Work through the questions, each time choosing the characteristic that best matches your snail from the two choices. Fossaria cubensis Clench, W.J. Aperture relatively shorter, about half or less the length of the shell. Outer lip partially flattened in adults. Click on the link in the row that best matches your snail. Our beaches often rank at or near the top in the world. Minor spiral sculpture weak or absent. Adams, 1841). After a few years in storage glandular tissues in the female reproductive system deteriorate, and the process gradually spreads to destroy all but the terminal genital structures. 202, 208). Only genera that enter fresh water are treated. Knobby Elimia Floridobia porterae You can also navigate through the images by clicking on the arrows near the left and right edges of the enlarged view. Suture deeply impressed, forming a channel. Aperture never with a septum. 75, 76). Taylor, D. W. 2003. (Thompson, 1968). Live snails for shell studies should be preserved in 70 percent alcohol. (Fig. Spire of adults with heavy vertical ribs; unicolor dark brown; usually less than 18 mm long (Figs. Contents 1 Shell description 2 Distribution 3 Ecology 4 References 5 Further reading Shell description [ edit] Five views of a shell of Pomacea paludosa Gray to brownish-yellow in color. There were no references to cover the entire state. Base of shell when viewed from below showing about half of preceding whorl due to straight basal lip (Fig. Identifications are difficult in many instances without properly preserved specimens. Black-crested Elimia) Elimia albanyensis (Lea, 1864). 101). 158). Two subfamilies occur in North America. Penis with invaginated cave-like pit within U-shaped superior tubercles. Shell ovate in shape, about 1.2-1.5 times as high as wide. Length of shell 2.6-3.0 mm (Fig. Periphery of last whorl bluntly angular, lying below plane of apex (Figs. Three occur in Florida. Parietal margin of operculum slightly convex in outline (Fig. . 77-79). 70). 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. Sculpture consisting of fine incremental threads, and spiral striations that may become obsolete at maturity. Operculum with about 6 slowly expanding whorls (Fig. Adult shells about 40-60 mm high (Fig. 1992. Cymbal Ancylid Floridobia helicogyra Aperture narrow, about half as wide as high. (Thompson, 1968). (Walker, 1905). 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. 3:51. 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. Aphaostracon pycnus Spire depressed, much less than height of aperture, occasionally planular (Figs. 162-164). It is important to save some specimens for anatomical studies. The reappearance of an invasive snail species forced state officials to enact a quarantine order two weeks ago for residents of Florida's Pasco County, an area north of Tampa along the gulf. 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. Henscomb Hydrobe Elimia floridensis ssp. Attains a length of about 30-36 mm (Figs. Walkerana, 1: 81-365. Escambia Elimia Newborn shells white. Prominent minor spiral sculpture along periphery. 68). (Lea, 1834). The bodies of large snails, such as viviparids and pilids, should be pulled from the shell. Floridobia wekiwae Penis filament white. Thompson, F. G. 1983. Operculum spiral, consisting of two or more rapidly increasing whorls (Fig. Suture weakly impressed. Most freshwater hydrobiids in the eastern United States are annual species. Subspecies bear the same name as the nominate subspecies, as is consistent with the standard used by the American Fisheries Society for fishes, and by other societies for other classes of animals. Graphite Elimia It wasn't until 2021 the population was. This subfamily includes about fifteen North American and European genera (Thompson 1979). Shell sculptured with very fine, uniformly spaced axial threads (Figs.168-170). Florida's . Shell without conical spines, although spiral threads may be present. Ferrissia hendersoni Peninsula Ancylid The Pleuroceridae of the Atlantic Coastal Plain. 118). Color uniform olive-green, never banded (Fig. Conical with relatively slender whorls. "If you see one of these snails,. Clench, W.J., & R. D. Turner. Female oviparous, never with embryos in uterus. Suture relatively deep, Whorls of spire rounded. Hyacinth Siltsnail) Floridobia floridana (Frauenfeld, 1863). On sibling species and genetic diversity in Florida Goniobasis (Gastropoda, Prosobranchia, Pleuroceridae). Color often glossy reddish brown. Whorls uniformly rounded, not flattened above (Fig.144). 159-161). Nucleus of operculum spiral and then surrounded by concentric growth rings (Fig. Length of shell about 2.2-2.8 mm long (Fig. Two-ridged Rams-horn Aperture elliptical and usually attached to preceding whorl; 4.1-4.5 whorls present. 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. (Clench & Turner, 1956). Occasionally it may be necessary to turn to other information sources to determine identifications with a greater degree of certainty.. 41-43). (Couper, 1844). A preliminary revision of Florida Lioplax (Gastropoda: Viviparidae), with a description of Lioplax talquinensis n.sp. Thick-lipped Rams-horn Shell ovate or subcircular in shape, smooth or with radial sculpture localized anteriorly. 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 . Size smaller than last species, seldom exceeding 10 mm in width (Figs.194-196). Lower margin of aperture advanced beyond upper margin so that plane of aperture slopes posteriorly when viewed from the side (Figs.189-193). 17, 29-32), shell usually banded in Florida forms. The family contains many genera and numerous species in South America, Central America, Mexico, Africa, and Southeast Asia. (Aguayo, 1935). 1965. 93). 44). Parietal margin of operculum concave (Fig. Shell coiled to the left, with the aperture on the left side (Figs.147-158). (Gould, 1841). Radial striations present or absent Laevapex Walker, 1903. Body whorl strongly keeled as though pinched at the periphery (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. 12). Shell sculptured with fine spiral threads. Fossaria modicella Pomacea canaliculata 143). The island apple snail is the largest of the known species in Florida with shell sizes up to five inches in length. Adults about 15-18 mm wide with about 5.5 whorls (Figs.183-185). 68); lobe and flagellum with various patterns of dermal glands; central tooth of radula with basocones located on reflected margin of tooth (Fig. 126); accessory crest present on penis. It has many colorful stripes, colors, and bands on its shell which are usually orange, light orange, dark orange, or yellow. 132). Shell usually large, about 12-16 mm long. Radula with tricuspid lateral teeth (Fig. 134). Hershler, R. & F. G. Thompson. 35). (Reeve, 1856). Shaggy Ghostsnail 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. Walkerana, 13: 1-108. Aquatic; moves by gliding motion. 51, 52). (Pilsbry, 1890). It was first identified in Florida by Dr. Harry G. Lee, who discovered the snail in Duval County in 2009. 124). Suture deeply impressed. Aperture trapezoidal in shape; spire more robust, straight sided; with a shallower suture; parapical crest large (Fig. They achieve their greatest diversity in genera and species in temperate North America. Each snail has both female and male reproductive organs, so they can reproduce rapidly. 153). 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. Like. Micromenetus brogniartiana Freshwater snails (Mollusca: Gastropoda) of North America. Eight species have been proposed. Shell glossy. (Thompson, 2000). The first edition of The Freshwater Snails of Florida: a Manual for Identification was published in 1984. Floridobia vanhyningi Littoridinops palustris Sculpture variable. The reader will discover how very little we know about any genus occurring in Florida. Shell elongate-conical, with about 5-7 whorls. In Florida four types of Campeloma have been recognized. Evolution has proceeded primarily through reproductive and trophic specializations. Floridobia mica Viviparus intertextus 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. The snails can produce 1,200 eggs in a year and grow up to about the size of a human fist. The primary differences between the two families are based on soft anatomy. Laevapex fuscus Pomacea paludosa Hatia pomilia hendersoni Giant Snails Invading Florida, "Major Threat" to Crops. Micromenetus d. dilatus Shell large, 80-100 mm wide. Operculum corneas, without pegs on inner or outer surface. Base of last whorl with prominent spiral ridges. Whorls generally arched. Most inhabit fresh water, but some also occur in brackish water. Penis with one papilla on left margin (Fig. The number of subfanilies recognized in the Hydrobiida is unsettled. 148). Dorsl surface of penis with a few elongate superior tubercles that form a weakly defined U-shaped pattern. Thompson, F. G. 1969. The coloring makes state officials. Enterprise Siltsnail) Floridobia monroensis (Dall, 1885). One species, Spilochlamys turgida (Thompson, 1969), the Pumpkin Siltsnail (Fig. Hello Bruce. Body whorl inflated. Outer lip of aperture arched forward (Figs. Apex in the posterior right third, domelike and evenly rounded. 34); penis frlattened, blade-like (Fig. Taylor recognizes twenty-three genera based on the soft anatomy. Lymnaeids are a nearly cosmopolitan family of freshwater snails. 159-179). Suture more deeply impressed than in 77a. Shell olive-green with vertical reddish flames and spots. Whorls of spire less rounded. The snail can wreak havoc on agriculture and carry a parasite that causes meningitis in humans.. Laevapex diaphanus Shell with 3-4 whorls. NotogiIlia wetherby Pomacea paludosa, common name the Florida applesnail, is a species of freshwater snail with an operculum, an aquatic gastropod mollusk in the family Ampullariidae, the apple snails . However, formalin is an excellent fixative for short-term preservation. 86). 4). Some species that are endemic to Florida springs live in environments with nearly constant temperatures and apparently reproduce continuously throughout the year. (Thompson, 1968). Penis with 3 papillae along right margin (Fig. Oftentimes you'll see trails of mucous around these damaged sites. Shell shaggy with numerous spiral fimbriations that are broken into synchronized tufts. Carib Physa (Thompson, 1968). (Thompson, 1968). Base of shell usually without spiral band. Each: $28.50 M-890 BANDED TULIP SHELL, Fasciolaria lilium A small predatory snail that feeds on clams. The species of snail was present in Florida in the 1960s and 1970s before being eradicated in 1975, the FDACS said. (Thompson, 1968). Widely umbilicate. Swallow-tailed kites are spring and summer residents; snail kites are specially adapted to feed on apple snails in Florida freshwater wetlands year 'round. (Thompson & Hershler, 1991). This study was a landmark contribution to the malacology of the southeast, and it summarized the known fauna of western Florida. Operculum constructed entirely of concentric rings (Fig. Shell smaller, reaching a maximum diameter of 13 mm. Never preserve shell specimens in formalin. Accessory crest absent. (Say, 1829). In previous editions of the manual species of Floridobia were placed in the genus Cincinnatia. Sculptured with fine incremental striations and a few fine spiral striations (difficult to distinguish except with transmitted light). Thiarids are ecologically significant because they tend to replace native snails where they are introduced and because of their abundance. Four species currently are recognized, but the genus has received very little study over most of its range. Shell conical, thick, opaque. 117). 2018). Shell elliptical in shape. Central tooth of radula with long basocones along base (Fig. It is globose in shape, body whorls are wide, spire is depressed, and the aperature is narrowly oval (Burch 1982). The LIOPLACINAE is endemic and include Campeloma, Lioplax, and Tulotoma. Serrated Crownsnail MIAMI-DADE, Fla. As if 2020 did not have enough surprises and curveballs, an invasive snail located in the U.S. for the first time was discovered in-- you guessed it, Florida. Conical with relatively obese whorls. Elimia athearni Size small, discoidal, adults seldom exceeding 4 mm in width. Others were new taxa not found in earlier surveys. Apical whorls raised to form a point on top of spire. (Linnaeus, 1758). It contains about a dozen species in North America. Ichetucknee Siltsnail Baker, F.C. 81-83). Penis with a dense pattern of superior tubercles. Size larger, adults 7 mm or more in width. Aperture broadly in contact with preceding whorl. Aphaostracon xynoelictus 162). Radial striations present on shell but not on apex. This pest remains a threat in Florida, Hawaii and the Caribbean. A giant African land snail, photographed at a lab in 2014. Choctaw Lioplax Umbilicus closed or narrowly perforate. (Lea, 1838). Spire long, 1.3-1.7 times length of aperture, convex in outline; shell relatively large and nearly cylindrical; 4.0-4.9 mm long; whorls 5.0-5.7, strongly rounded with a deeply impressed suture (Fig. Seminole Rams-horn The family attains its greatest diversity in Southeast Asia. Olive NeriteNeritina usnea(Reding, 1798). Vertical ribs relatively strong and more widely spaced. Biochemical studies show that in Elimia shell characters are conservative indicators of genetic divergence (Mihalcik & Thompson, 2002). Additional genera occur in the Orient, Southeast Asia, Africa, and South America. Though small, this elusive specimen is a rare and valuable jewel, waiting to be discovered. 142). Males with penis at anterior right corner of mantle cavity. (Say, 1825). Apex of shell slightly convex in outline. (Thompson, 1968). Ghost Rams-horn Teardrop Snail Burch, J. (Mihalcik & Thompson, 2002). Sexes not conspicuously dimorphic in size. 1963. Aperture moderately oblique. 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. More data based on many population samples from throughout this range will be necessary before the validity of the three forms can be determined. Squaremouth Amnicola Penis filament black. Shell elliptical-ovate in shape. This is not the first time Florida has dealt with an invasion of giant snails. The latter are placed in a small container filled with pond water. 1945. 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.. It is believed the snail was introduced via the railway cars coming from Mexico. Vertical sculpture reduced to irregularly spaced and uneven growth striations or low undulating ribs. Penny Sprite) Micromenetus floridensis (Baker, 1945). 84). Evolution has occurred through reproductive specialization, with each genus and most species having distinctive patterns of dermal glands. 75). A review of the aquatic gastropod subfamily Cochliopinae (Prosobranchia, Hydrobiidae). Body whorl uniformly rounded peripherally (Fig. (Clench & Turner, 1956). Nautilus, 32: 71. (Thompson, 2000). 15, 18). Aperture elliptical in shape; spire slenderer and slightly convex in outline; suture moderately impressed suture; parapical crest reduced in size. Parapical crest of verge greatly enlarged. 1991. Shell with 5.6-6.8 whorls; about 3.2-4.5 mm long (Fig. They are commonly found on live aquatic plant stems, dead leaves and sticks, and on bottles and cans. (Dall, 1885). The criterion of inbreeding for defining species cannot be applied, and other objective criteria are not yet been established. Shellolive-colored; spire straight-sided. Penis without a conspicuously enlarged papilla near right base, although other papillae usually are present. (This character separates only the genera under consideration; genera from other areas of the world do not conform to this distinction.) Brackish-water genera, Onobops and Heleobops, that are common in Florida are omitted. Thompson, F. G. & R. Hershler. Spiral or costate sculpture usually present. Size: 2-4 cm. Being nocturnal, these pests aren't always feeding when you're scouting. Ponderous Siltsnail 89, 90). Creek Siltsnail Shell usually planispiral, but two species may have a flat-topped, elevated spire. Last whorl of adult shell smooth or with growth striations, but not with ribs and spiral chords. The HYDROBIIDAE include over 200 genera and approximately 1000 species. Aperture elliptical and loosely attached to or slightly separated from preceding whorl; 4.5-4.9 whorls. Suture not as deeply impressed as in 77b. Operculum with about 3 whorls (Fig. Over 500 species of Elimia have been described, most on the basis of shell characters. Aperture loosely attached to or slightly free from preceding whorl. 119). Shell conical or cylindric-conical; light to dark brown. Biomphalaria havanensis Ecology: This large snail is found in freshwater lakes, rivers, streams, ponds and ditches, preferring slow-moving water. 136, 138). Other families occur elsewhere in North America and in other continents. Planorbella trivolvis intertexta The genus is found along the east coast of North America from Maryland south to Tabasco, Mexico. Shape highly variable, usually disc-shaped but some specimens with flat-topped raised spire. (Pilsbry and Beacher, 1892). Elimia doolyensis 33); males without copulatory structures. Lobe and flagellum with various patterns of dermal glands (Fig. Penis with 7-50 papillae along right margin and 1-4 papillae along distal third of left margin (Figs. Nautilus, 97: 68-69. (Fmr.) It was well received, and it served the interests and needs of many people. Marsh Rams-horn Regal Hydrobe Planorbula armigera wheatleyi Length of shell 2.0-2.5 mm (Fig. Pomacea bridgesi Kites belong to the same bird family as hawks and eagles, Accipittridae. For the purpose of completeness, the three parthenogenetic forms and C. geniculum are included in the key. Wekiwa Hydrobe Height of shell about 23-26 mm (Figs. 2002. Outer lip of aperture nearly straight in lateral profile (Figs. The state says a "gastropod enthusiast" collected unusual snails in the Coconut Grove area back in August. Adult shell without lamella on interior walls of aperture. Aperture ovate; baso-columellar angle not extended; basal lip not indented. Te, G.A. 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. Small- or medium-sized snails need to be identified with the aid of a binocular dissecting microscope that is equipped with an ocular micrometer calibrated to 0.1 mm accuracy so that precise measurements can be made. Slough Hydrobe (Vanatta, 1934). Shell globose with a relatively depressed spire; about 1.0- 1.2 times as high as wide. (Lea, 1962). Seashell Identification Identify your Florida Gulf Coast seashells! 121). Carib Fossaria Outer lip continuously rounded (Figs. Shell relatively thick (Figs. Mesa Rams-horn 37), which is important for generic and specific diagnosis. Approximately 35 species have been described. Waccasassa Elimia Stately Elimia Adult shell small, less than 3 mm high; umbilicus narrow but not occluded by the columellar lip; columellar margin of the aperture weakly concave (Fig. Peristome incomplete around aperture. Unlike other brown-tinted giant snails, this. Umbilical perforation wide, 1/6 to 1/8 diameter of shell. 1962. Choctawhatchee Elimia The profile of the whorls and their comparative size can also help determine the species. Shell sexually dimorphic in size, males about one-third as long as females. 170, 173). Aperture broadly elliptical. Spilochlamys gravis Newborn shells brown. 58). Typically, land snails live on or near the ground, feed on decaying plant matter, and lay their eggs in the soil. Marginal teeth of radula trapezoidal with well-differentiated cusps. 1980. 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. Shell usually squarish or rectangular in shape. Basch (1963) recognized five valid species. 34, 35) (Pomatiopsis, Fig. 160, 163, 166). Essentially identical shells occur repeatedly among unrelated genera and subfamilies. Aperture terminating below periphery of body whorl. Published April 18, 2013 shell with 3.9-4.2 whorls (Fig. A single glandular crest present on apex of terminal lobe (Figs. Outer lip strongly sinuous. MESZAROS: It's not clear how these snails entered Florida again. Mantle diffusely pigmented or unpigmented. Earlier whorls of adult shell with vertical ribs and spiral chords. 197, 204). Body whorl relatively narrow, not conspicuously enlarging near aperture (Fig. 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. Shell distinctly carinated above and below; both apex and base funnel-shaped. Average length about 5.5 mm (Figs. Planorbella duryi Giant African snails can lead to giant problems. Outer lip straightened just below shoulder; straightened portion lying at an angle to axis of shell (Figs. Green Cove Springsnail Wekiwa Siltsnail The species was eradicated again in 2021 after being detected in 2011 in Miami-Dade County, according to FDACS. The aquatic snails of the Family Hydrobiidae of peninsular Florida. Philadelphia, 134: 143-77. Burch, J.B. 1989. Penis with papillae along right margin (Figs. This snail was twice established in southeastern Florida and was successfully eradicated both times. All snails in the subfamily Achatininae, including the giant African snail (GAS) (Lissachatina fulica), are regulated plant pests. Shell more slender, about 0.30-0.35 times as wide as high. A taxonomic revision of the feshwater snails referred to as Elimia curvicostata, and related secies.
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