Invasive Giant African Land Snail Spotted in Florida - Business Insider 134). Florida town quarantined after discovery of a giant African land snail Specimens then are placed in a fixative such as 10 percent formalin or Bouins Solution. 128). 75, 76). Evolution has occurred through reproductive specialization, with each genus and most species having distinctive patterns of dermal glands. Browse and enjoy! (Aguayo, 1935). 1945. Outer lip strongly sinuous. Operculum paleomelanian, with a large sub-centrally located nucleus (Fig. 1979b. Giant snails that can cause meningitis found in Florida - WESH Flatwood siltsnail The Junonia is seldom found, and is considered a special find by beachcombers. 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. They achieve their greatest diversity in genera and species in temperate North America. The shell are secondarily useful for identification, but only when supplemented with anatomical information. 10). Lyogyrus retromargo 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. University of Florida An investigation by FDACS Division of Plant Industry found multiple positive sites with the snail in Miami-Dade County. Two genera of North American freshwater snails: Marstonia Baker, 1926 resureected to generic status, and Floridobia, new genus (Prosobranchia, Hydrobiidae, Nymphophilinae). Average length about 4 mm (Figs. 80). Penis with a dense pattern of superior tubercles. Floridobia ponderosa Whorls 3.0-4.0. Aperture loosely attached to or widely separated from preceding whorl. This family contains twelve genera in North America. 180-182). Four species currently are recognized, but the genus has received very little study over most of its range. Shell depressed. Physid species have similar and superficially featureless, variable shells, and the shell is imprecise for identifying most genera and many species. (Fmr.) 162). 119). Some were range extensions for species known to occur in adjacent areas. Opercula should be glued to cotton plugs and replaced within the aperture. CLICK ON EACH PHOTO Fallen Angel Wing -Atlantic Mud Piddock Boring Angel Wing- Striate Piddock Rice Olive Numerous species of exotic snails are serious pests of plants and threats to public health. Shell Guide | Bailey-Matthews National Shell Museum | Sanibel Island Clench, W.J. Aperture of shell closed by an operculum (snail must be collected live because the operculum is lost soon after death). 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. J. Clench and Ruth P. Turner (1956) published a survey of the fauna from the Suwannee River west to the Escambia River. Aperture broadly elliptical. 137, 139). Taylor (2003) monographed the family Physidae. (Fig. In 2011, a population of the pests was discovered in Miami-Dade County. Taylor, D. W. 2003. Critical Florida references are Thompson 1968, 1969, 2000; Thompson and Hershler, 1991, and Hershler and Thompson, 1992. (Sowerby, 1878). Thompson, F. G. & R. Hershler. Horse conch in mud Horse Conch snail The mature horse conch can be two feet long! Apex flat with narrow threadlike keel. Do not use tap water since copper ions from the plumbing system may contaminate the tap water and kill the snails prematurely. Nautilus, 19: 34. Spiral or costate sculpture usually present. Two-ridged Rams-horn PDF Giant African Land Snail Identification Sheet - Florida Commissioner of Te, G.A. The snail can wreak havoc on agriculture and carry a parasite that causes meningitis in humans.. (Vanatta, 1934). Color uniform olive-green, never banded (Fig. Umbilical perforation wide, 1/6 to 1/8 diameter of shell. Aperture non-operculate; mantle cavity modified into a lung. Goldenhorn Marisa Florida Shell Guide | 2FLA Florida's Vacation and Travel Guide 115a, 115b). The systematic relationships of the hydrobiid snail genus Nymphophilus Taylor, 1966 and the status of the Subfamily Nymphophilinae. Penis filament black. Mantle cavity with gill on dorsal surface. Shell with or without bands; slender; Suture deeply impressed; upper whorls with a strongly carinate periphery (Fig. A systematic study of the Family Physidae (Basommatophora: Pulmonata). The greatest diversity of genera and species is in the Indo-Australian region. One species, Spilochlamys turgida (Thompson, 1969), the Pumpkin Siltsnail (Fig. 33); males without copulatory structures. Surface smooth or dented with hammer marks. Aperture broadly ovate. Apical whorls depressed; body whorl obtusely angular above and sharply carinated around funnel-shaped umbilicus. Haitia bermudezi Length of shell up to 5 mm. Interior of aperture livid white. Shell thin, fragile, very much depressed, less than 0.25 times as high as long. 16, 17). Last whorl flattened above. Philadelphia, 134: 143-77. The genus is difficult to diagnose by shell characters because the three species are very dissimilar. Spilochlamys conica Genera that serve as intermediate hosts for schistosomatid trematodes have been studied extensively. Columellar margin of aperture very thick but not reflected over umbilical area (Fig.103). The spire differs between bumpy and smooth but it is always elongated. Ferrissia mcneilli Mantle mottled with black spots and blotches. Occasional Papers on Mollusks, 2: 261-87. Planorbella trivolvis intertexta The first edition of The Freshwater Snails of Florida: a Manual for Identification was published in 1984. Campeloma parthenum 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. Body whorl relatively narrow, not conspicuously enlarging near aperture (Fig. Shell sculptured with prominent nodes overlapping suture and forming crenulations. Seashell Photo ID, Florida East Coast - Seashells by Millhill Radula with tricuspid lateral teeth (Fig. 17-29). Invasive snail species found in Florida, University of Florida IFAS The horntail snail belongs to the genus Macrochlamys (family Ariophantidae), which has over a hundred described species distributed from South to Southeast Asia and southern China (Pholyotha et al. Vas deferens independent of blind caecum and its duct. 151, 152). The radula is then thoroughly rinsed in distilled water, stained, and mounted on a microscope slide. Newborn shells white. Elimia athearni 180-193). Base of shell usually without spiral band. 208, 209), although radial striations may be present on other areas of shell. Sculpture consisting of incremental striations only. Amphibious; moves by step-like mode of progression (Fig. Outer lip less sinuous. (Lamark, 1822). The lymnaeid fauna of the southeast is particularly depauperate compared to more northern and western regions of the continent. Two, Melanoides tuberculata and Tarebia granifera, are medically important because they can serve as first intermediate host for the human lung fluke, Paragonimus westermani. Click on images to enlarge them. 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. Amnicola dalli. 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. Occasionally it may be necessary to turn to other information sources to determine identifications with a greater degree of certainty.. More data based on many population samples from throughout this range will be necessary before the validity of the three forms can be determined. Shell coiled to the left, with the aperture on the left side (Figs.147-158). Oftentimes you'll see trails of mucous around these damaged sites. Aphaostracon theiocrenetus Choctawhatchee Elimia Additional surveys found four different populations all associated with the CSX railways. Other families occur elsewhere in North America and in other continents. It also was the first adequately illustrated faunal summary published on the Southeast. Hydrobiids are small- to medium-sized operculate snails that live primarily in brackish and fresh water. Bulletin of the Museum of Comparative Zoology, 129: 401-61. Shell narrow, terete or cylindric-conical with a moderately impressed suture. (Gould, 1841). (Walker, 1925). Aperture terminating below periphery of body whorl. The following shells are commonly found on Florida's beaches. (Thompson, 1968). Body whorl compressed (Fig. A single species consisting of two highly variable subspecies occurs in Florida. Shell with 4.4-5.0 whorls; about 3.7-5.2 mm long. 110, 111, 68). Females with an egg-laying groove or sinus on right side of foot; eggs deposited on substrate. Umbilicus closed or narrowly perforate. Shell sculptured with vertical, weakly curved ribs and much finer spiral striations. 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. Spire of adults with heavy vertical ribs; unicolor dark brown; usually less than 18 mm long (Figs. One to several dark growth-rest varixes usually present on last whorl. (Say, 1825). The molluscan family Planorbidae. Some shells may be heavily encrusted with mineral deposit and algae, which may obscure details of the sculpture and color.
