florida snail identification florida snail identification

Columellar margin of aperture very thick but not reflected over umbilical area (Fig.103). North American freshwater snails: species list, ranges and illustrations. Suture deeply impressed, forming a channel. 61). Medium- to large-sized tropical freshwater snails. Apex smooth, with no trace of radial striations (Fig. CLICK ON EACH PHOTO Fallen Angel Wing -Atlantic Mud Piddock Boring Angel Wing- Striate Piddock Rice Olive The number of whorls persent on the shell can help you easily identify the snail species. Penis with a dense pattern of superior tubercles. Penis as illustrated (Fig. Shell transparent or opaque. Sculpture variable. Melanoides tuberculata (Muller) in Florida. This manual recognizes 113 species and subspecies that occurring in Florida and the list will increase with time. Shell unicolor, with distinct vertical sculpture in addition to strong spiral sculpture. The snails remain a threat in Hawaii and the Caribbean after their eradication in Florida in 2021. Bulletin of the Florida State Museum, Biological Sciences, 1: 97-239. Sculpture consisting of incremental striations only. Body whorl relatively rapidly expanding in diameter (Fig. The radula can be studied by dissecting out the buccal mass and macerating it in clorox or sodium hydroxide. Outer lip continuously rounded (Figs. 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. 129). 131). 88). 97). Aperture enlarged (dilated). 47). Shell with 3-4 whorls. Spire raised and flat-topped. 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. The spire differs between bumpy and smooth but it is always elongated. Female ovoviviparous with about 50 embryos in uterus; embryos clearly evident through clean shells. Adults about 2-3 mm long (Figs. 17, 29-32), shell usually banded in Florida forms. The radula is then thoroughly rinsed in distilled water, stained, and mounted on a microscope slide. Rotund Mysterysnail (Lamark, 1822). (Fmr.) Aperture elliptical and usually attached to preceding whorl; 4.1-4.5 whorls present. Shell usually planispiral, but two species may have a flat-topped, elevated spire. It contains about a dozen species in North America. With the exception of Liguus fasciatus, these snails have shells that vary in color from ivory to tan, often with brown markings.Liguus shells are brilliantly colored and are frequently marked with yellow, green, pink, and brown. Mimic Pondsnail Pilsbry, H. A. Umbilicus open. 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. In some genera, eggs are deposited above the water in dry clusters on stems, trees, walls, etc. The shell are secondarily useful for identification, but only when supplemented with anatomical information. Plane of aperture nearly vertical when viewed from the side. Thompson, F.G. 1979. 53). (Aguayo, 1935). 91). Length of shell 2.4-3.4 mm (Fig. (Thompson, 1968). This snail was twice established in southeastern Florida and was successfully eradicated both times. Umbilicus variable. Aperture strongly oblique. Attains a length of 30-40 mm (Fig. One species occurs naturally in Florida, and three others have been introduced. Pseudosuccinea columella Lip of adult shell usually with a thick crest externally and an internal callus. Penis with 3 papillae along right margin (Fig. The species was eradicated again in 2021 after being detected in 2011 in Miami-Dade County, according to FDACS. Penis filament black. The International Commision on Zoological Nomenclature has ruled that AMPULLARIIDAE is the valid name for this family of snails. 171-173). Shell subcircular, smooth, often encrusted with dark material. Melanoides turricula 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. University of Illinois Press, Urbana. 22). 12). The . 119). Snails on corn. Operculum paleomelanian, with a large sub-centrally located nucleus (Fig. Fossaria modicella Minor spiral sculpture weak or absent. (Fig. Crystal Siltsnail 46). 70, 71). Inside of lip with or without a reddish callus but callus never dark red in color. Aphaostracon monas 68); lobe and flagellum with various patterns of dermal glands; central tooth of radula with basocones located on reflected margin of tooth (Fig. 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. 62). 95). Apex of shell flat, though it may be raised above the periphery of the last whorl (Figs. (Anthony, 1860). 56). Vertical sculpture reduced to irregularly spaced and uneven growth striations or low undulating ribs. Vernacular manes used in this manual are consistent with the standardized list of vernacular names for North American freshwater snails recently established by the American Fisheries Society (Turgeon, et al, 1998). 1979a. Planorbella trivolvis intertexta Base of shell when viewed from below showing about half of preceding whorl due to straight basal lip (Fig. Umbilicus narrow, deep (Fig. Operculum loosely coiled, with 3.75 large whorls, the outer one expanding more rapidly than the others (Figs. 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. 37), which is important for generic and specific diagnosis. Base of shell with dark red spiral band. Penis with invaginated cave-like pit within U-shaped superior tubercles. Operculum constructed entirely of concentric rings (Fig. Identification should conform with all data in the key and with geographic distributions. Dorsl surface of penis with a few elongate superior tubercles that form a weakly defined U-shaped pattern. Most snails will have a conical shaped shell. Tarebia granifera This will lead you to the final choice which identifies the snail. Aperture usually open; occasionally with a horizontal, shelf-like septum closing posterior part (Fig. Shell usually large, about 12-16 mm long. Shell small, 2.0-2.8 mm long. Numerous species of exotic snails are serious pests of plants and threats to public health. Seminole Rams-horn Penis with a single papilla along left margin (Fig. The molluscan family Planorbidae. Fenney Spring Hydrobe Some shells may be heavily encrusted with mineral deposit and algae, which may obscure details of the sculpture and color. The Florida Department . Pomacea canaliculata (Lamarck, 1822) (Gastropoda, Prosobranchia, Pilidae): A freshwater snail introduced into Florida, U. S. A. Malacological Review, 30:91. Pomacea bridgesi Marsh Sprite (Thompson, 1968). (Linnaeus, 1758). Shell grayish-white. 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. Evolution has proceeded primarily through reproductive and trophic specializations. Unlike other brown-tinted giant snails, this. Shell globose with a relatively depressed spire; about 1.0- 1.2 times as high as wide. Shell conical or cylindric-conical; light to dark brown. Shell with a brownish hue. Dusky Ancylid Ph.D. thesis, University of Michigan, i-xii, 1-324. Freemouth Hydrobe Shell usually with raised spiral threads around periphery, frequently the uppermost thread has conical or triangular spines (Figs. Spire shorter, conical, 0.7-1.3 times length of aperture, nearly straight-sided in outline, suture of whorls weakly or moderately impressed. 201, 207). 32). Suture relatively shallow. 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. Floridobia fraterna Shell with prominent ribs and spiral chords on all whorls. It is essential that clean specimens be examined under proper lighting to observe diagnostic sculpture characteristics. Body whorl compressed (Fig. It is characterized by the lobed shape and glandular patterns of the penis. Shell larger, 2.2-4.8 mm long. Curator of Malacology. Shape highly variable, usually disc-shaped but some specimens with flat-topped raised spire. Radula with bicuspid lateral teeth (Fig. Shell obese and ponderous. U.S. Florida Invasive species. Prepared by Fred G. Thompson, Fmr. Nuclear whorl flattened, 0.41-0.48 mm in diameter transverse to initial suture. Shell nearly smooth, sculptured with irregular growth striations. Bugle Sprite Channeled Applesnail Penis with a few simple scattered superior tubercles on outer surface; parapical crest on a low ridge; accessory crest and inferior crest absent (Fig. Attains a length of about 30-36 mm (Figs. Umbilicus broad, shallow (Fig. The systematic relationships of the hydrobiid snail genus Nymphophilus Taylor, 1966 and the status of the Subfamily Nymphophilinae. Miscellaneous Publication of the Museum of Zoology, University of Michigan, 6: 1-213. This family includes four North American genera, Amnicola, Dasyscia, Colligyrus and Lyogyrus, and the European genus Marstoniopsis and some Asian genera. The lymnaeid fauna of the southeast is particularly depauperate compared to more northern and western regions of the continent. Haitia cubensis Suwannee Hydrobe 70). Body whorl relatively narrow, not conspicuously enlarging near aperture (Fig. 60). The species are highly variable, and there is no consensus regarding the number of valid species. Penis with 2 or 3 papillae on left margin (Fig. 93). (Pfeiffer, 1839). Mantle diffusely pigmented with melanophores (Fig. Aperture large, oval, much more than half the length of shell. There is much disagreement as to how many species actually exist. 164, 167). Penis with different arrangement of papillae than above. Penis of males with papillae along sides (Figs. Weak spiral striations present on top of growth striations (Figs. Marisa cornuaurietus They have been found in extremely high numbers in some crop fields, including corn, cotton, and peanuts, in home gardens, and around farm . Carib Fossaria Laevapex is a North American genus. Conical Siltsnail 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. Paper fig A Florida Gulf Coast specialty shell! 60). 36); males with a copulatory appendage, a penis (Fig. Shell smooth. Bright pink egg masses are laid on . Aperture broadly elliptical. Lyogyrus retromargo Malacological Review, 19: 85-86. Brownish-yellow in color (Fig. This family contains twelve genera in North America. 7 new spider species . About 4.2-4.6 weakly arched whorls with a weakly impressed suture. Three new freshwater snails of the genus Cincinnatia from peninsular Florida. Ferrissia hendersoni An invasive, giant snail species, that can also lead to outbreaks of meningitis, has been found in New Port Richey. Ferrissia mcneilli The horntail . Tryonia aequicostatus Some were range extensions for species known to occur in adjacent areas. 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. 58). Snails have invaded some local areas throughout northern Santa Rosa and Escambia Counties this summer. 59). Those available covered only part of the state or part of the fauna. Choctawhatchee Elimia Operculum with about 6 slowly expanding whorls (Fig. 54). A taxonomic revision of the feshwater snails referred to as Elimia curvicostata, and related secies. Until recently the entire knowledge of the Florida freshwater snail fauna was based on miscellaneous papers dealing with single species, groups of closely related species or single river systems. (Lea, 1862). (Call, 1886). Suture more deeply impressed. Penis with a very long slender flagellum that extends beyond terminal lobe. Quilted Melania Size small, discoidal, adults seldom exceeding 4 mm in width. Thompson, F. G. 1997. Many species are secondarily modified to appear right-handed or pseudo-dextral (FIGS. Basal lip of peristome deeply receded. 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. Shell nearly smooth, sculptured with irregularly spaced incremental striations (Figs. Penis with large a terminal lobe on the left side and a smaller appendix-like flagellum on the right side. shell with 3.9-4.2 whorls (Fig. The genus Viviparus (Viviparidae) in North America. 1979b. Spurwinkia: Morphology, systematics, and ecology of a new genus of North American marshland Hydrobiidae (Mollusca: Gastropoda). 142). Aperture never with a septum. Pilsbry, H. A. (The penis is normally recurved into the mantle cavity, except during mating. Apex subacute, distinctly eccentric to the right of the midline. 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. Occasional Papers of the Museum of Zoology, University of Michigan, (456): 1-6. More data based on many population samples from throughout this range will be necessary before the validity of the three forms can be determined. 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. . Spilochlamys conica Periphery variable. Hydrobiids are small- to medium-sized operculate snails that live primarily in brackish and fresh water. The fixative may damage the shell, but that is unimportant for anatomical purposes. The author has attempted to simplify the key to include the minimum anatomical data needed for accurate identification.