Principles Of Watershed Management Ppt, Articles F

Shell elongate-conical, with about 5-7 whorls. Clench, W.J., & R. D. Turner. Adult shells about 40-60 mm high (Fig. Penis simple, elongate-conical, without papillae (Fig. Shell conical or globose-conical; thin, translucent, occasionally opaque. 125); accessory crest absent on penis. (Lea, 1834). Curator of Malacology. 153). Rails, gallinules, coots and cranes. 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. 135). 64). 3). Most snails will have a conical shaped shell. Shell glossy. Outer lip of aperture with a thick callus on inner surface. Thompson, F. G. 1983. Shell unicolor brown, never mottled with reddish spots. 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. Your choice will lead you to the proper identification of your snail or the next appropriate pair of questions. 70). Size: 2-4 cm. 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. Vertical ribs relatively strong and more widely spaced. The aquatic snails of the Family Hydrobiidae of peninsular Florida. Interior of aperture livid white. 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. Viviparus contectoides limi, new name for V. c. compactus Pils. Aperture free from, or only in slight contact with, preceding whorl. Lymnaeids are a nearly cosmopolitan family of freshwater snails. Combining characteristics of cranes and rails, it . 75). Floridobia is known from peninsular Florida north along the Atlantic seaboard to Maine. They achieve their greatest diversity in genera and species in temperate North America. Elimia annae Florida Flatcoil: Golden Zachrysia: Zachrysia provisoria (L. Pfeiffer, 1858) Gastrocopta pellucida (L. Pfeiffer, 1841) Zonitoides arboreus (Say, 1817) Garden Zachrysia: Slim Snaggletooth: Quick Gloss: Mesomphix globosus (MacMillan, 1940) Hawaiia minuscula (A. Binney, 1841) Mesodon thyroidus (Say, 1817) Globose Button: Minute Gem: White-lip Globe A single species consisting of two highly variable subspecies occurs in Florida. Female shell about 3.5-4.0 mm long (Fig. Aphaostracon pycnus Size larger, adults 7 mm or more in width. Parietal margin of operculum convex. Shell thin, fragile, very much depressed, less than 0.25 times as high as long. Body whorl inflated. Over 500 species of Elimia have been described, most on the basis of shell characters. 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). Smooth-ribbed Hydrobe Littoridinops palustris Penis with invaginated cave-like pit within U-shaped superior tubercles. Pomacea paludosa Aperture narrow, about half as wide as high. Inferior crest usually present. Outer lip partially flattened in adults. Aperture relatively large with fine, uneven, serrate denticles along parietal wall (Fig. Fossaria modicella Rotund Mysterysnail 53). Embryonic shell with fine vertical ribs and a heavy spiral chord on periphery and two basal spiral chords (Fig. Apex behind center of shell. Melanoides tuberculata (Muller) in Florida. 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. The giant African land snail is back in Florida after having been declared eradicated twice. Floridobia mica (Pilsbry and Johnson, 1903). Shell sculpture with incremental striations only. Shell without conical spines, although spiral threads may be present. There is much disagreement as to how many species actually exist. Shell usually large, about 12-16 mm long. Spiral angulation on whorls sharp and prominent in juveniles, usually becoming convex-rounded or smooth on last whorl in adults. (Lea, 1962). Umbilicus broad, shallow (Fig. 131). Last whorl distinctly shouldered. 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. Shell planular or disc-shaped; spire flat when raised above succeeding whorls (Figs. 197-209). Radial striations present on shell but not on apex. Pseudotryonia brevissimus Sides of spire slightly convex. Height of shell about 14-16 mm; width, 10-12 mm (Figs. Spiral sculpture absent. Adult shell about 4-5 mm high; umbilicus wide; columellar margin of the aperture concave in outline (Fig. Average length about 4 mm (Figs. (Thompson, 1968). The spire differs between bumpy and smooth but it is always elongated. Many have been synonymized, some undeservingly so. Melanoides tuberculata 69). The number of whorls persent on the shell can help you easily identify the snail species. The lymnaeid fauna of the southeast is particularly depauperate compared to more northern and western regions of the continent. Body whorl rounded (Fig. 10-12). 113). Shell elongate. (Thompson, 1968). Curator of Malacology 32). They are variable in their shell characteristics, and some samples may be difficult to identify. Aperture elliptical and loosely attached to or slightly separated from preceding whorl; 4.5-4.9 whorls. Floridobia wekiwae Most inhabit fresh water, but some also occur in brackish water. 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. Penis with large papilla on right margin near base and one or two papillae on left margin near distal end (Figs. Plane of aperture nearly vertical when viewed from the side. Freemouth Hydrobe Clench, W.J. Proc. Helisoma anceps anceps Six species are known to occur in Florida. Being nocturnal, these pests aren't always feeding when you're scouting. Many North American snail species were described near the turn of the century by Walker (1918). 60). Aperture never with a septum. Penis with 7-50 papillae along right margin and 1-4 papillae along distal third of left margin (Figs. Endemic New World genera occur in Cuba, Jamaica, and northern South America. University of Florida Only three widely distributed species occur in Florida. 10). Aphaostracon hypohyalina 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. Native and Invasive Land Snails Hawaiian Snails ( Partulina virgulata) From Molokai Island, Hawaii, 1900s-1960s Giant African Snails ( Lissachatina fulica) From Mariana Islands, North Pacific Ocean, 1950 Rosy Wolf Snail ( Euglandina rosea) From Gulf Co., Florida, 1983 Exhibit Area On the Brink Theme Warning Story Tags: Brink Invasive Invertebrates Apex subacute, distinctly eccentric to the right of the midline. Dusky Ancylid Lyogyrus retromargo Males with penis at anterior right corner of mantle cavity. Vernacular names are given only for species. Size smaller than last species, seldom exceeding 10 mm in width (Figs.194-196). The following key includes all of the species that occur in Florida and some that occur in Alabama, Georgia, and South Carolina. Dipping them in a dilute solution of oxalic acid and gently scrubbing them with a fine brush can clean such specimens. Arboreal forms, such as Liguus of Florida and Cuba, tend to be brightly coloured; terrestrial forms usually are drab. University of Illinois Press, Urbana. The . 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. This snail was twice established in southeastern Florida and was successfully eradicated both times. Penis with 2 or 3 papillae on left margin (Fig. NotogiIlia wetherby The primary differences between the two families are based on soft anatomy. Parietal margin of operculum concave (Fig. In 2011, a population of the pests was discovered in Miami-Dade County. Whorls 3.0-4.0. 62). The author has attempted to simplify the key to include the minimum anatomical data needed for accurate identification. Operculum paucispiral, with about three rapidly expanding whorls (Fig. In previous editions of the manual the Florida species were placed in the genus Physella. Slackwater Elimia Aperture moderately oblique. 16, 29). 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.. Elimia dickinsoni Base of shell with dark red spiral band. (Pfeiffer, 1839). Spire depressed, much less than height of aperture, occasionally planular (Figs. Newborn shells brown. 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. . There is no consensus in systematic biology about how to treat these forms. Ancylid gastropods are small, fragile limpets found in most freshwater habitats. Penis with 0-6 papillae confined to right margin (Figs. It is most common in Southwest Florida, and northwest Florida. Ghost Rams-horn 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. Fawn Melania Shell with spiral chords or spirally arranged series of nodes. Sculpture consisting of axial striations only (Fig.147). Few of the North American species have been studied to the extent that their taxonomy, geographic distributions, life histories, and ecology are documented. 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. Work through the questions, each time choosing the characteristic that best matches your snail from the two choices. Giant African land snails, an invasive species of mollusk, poses a threat to Florida residents as it can spread meningitis from a parasite it carries. Horse conch in mud Horse Conch snail The mature horse conch can be two feet long! Female adult snail kites have yellow or orange legs and ceres; and red or orangish-brown eyes. 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. Shell smaller, reaching a maximum diameter of 13 mm. Haitia pomilia pomilia Papilla with a duct that leads to a blind caecum in nape of snail. Length of shell about 2.2-2.8 mm long (Fig. 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. 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. Weak spiral striations present on top of growth striations (Figs. Shell 2.8-3.7 mm long. Parapical crest of verge greatly enlarged. Radial riblets on entire surface of shell except apex. 101). Recent studies treat amnicolids as a separate families. Vertical sculpture reduced to irregularly spaced and uneven growth striations or low undulating ribs. 170). Aphaostracon asthenes 110, 111, 68). Columellar margin of aperture very thick but not reflected over umbilical area (Fig.103). Important diagnostic characteristics for subfamilies, genera, and species are found in the female reproductive system, the male reproductive organ (the penis), and modifications of the radular teeth. 37), which is important for generic and specific diagnosis. They have been found in extremely high numbers in some crop fields, including corn, cotton, and peanuts, in home gardens, and around farm . Apex proportionally longer, about 0.3-0.5 times length of shell. Shell usually squarish or rectangular in shape. Shell keeled or strongly angular at the periphery (Figs. 105, 106). 1982. One species occurs naturally in Florida, and three others have been introduced. 68); lobe and flagellum with various patterns of dermal glands; central tooth of radula with basocones located on reflected margin of tooth (Fig. Outer lip nearly straight and parallel to axis of shell in adults (Fig. Baker, F.C. 34, 35) (Pomatiopsis, Fig. (Say, 1829). Pomacea canaliculata (Lamarck, 1822) (Gastropoda, Prosobranchia, Pilidae): A freshwater snail introduced into Florida, U. S. A. Malacological Review, 30:91. Aperture enlarged (dilated). Types of Shells In Florida: Seashell Identification Guide It lurks nearly a foot beneath the dunes of Sanibel Island. 151, 152). 1979b. In parthenogenetic organisms each population is inbred in the strictest genetic sense, and frequently a population will have minor characteristics that distinguish it from others. Only Elimia is found in Florida. Penis filament white. Micromenetus dilatatus avus (Pilsbry, 1905). Adults about 5 mm long (Figs. Nautilus, 19: 34. Fine vertical ribs present on uppermost whorls. The genus Viviparus (Viviparidae) in North America. The aquatic snail fauna of the southeastern United States has long been recognized for its richness and diversity. Incremental striations uniformly weak. The sexes are separate and fertilization is internal (Andrews, 1964). The other three forms, C. limum (Anthony, 1860), C. floridense Call,1866 and C. parthenum Vail, 1979, are exclusively apomictic parthenogens and have been separated on the basis of aperture coloration, embryonic shell coloration, and contour of the outer lip (Vail 1979a). Sculpture consisting of fine incremental threads, and spiral striations that may become obsolete at maturity. Formalin does not even serve as a good fixative or preservative for long-term anatomical studies. 45). 159-179). Channeled Applesnail Spilochlamys conica Central tooth of radula with long basocones along base (Fig. 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! This genus contains three species. 2015; Jayashankar et al. Dasyscia franzi It could take years to fully rid the state of the species, officials say. 19-21). Florida Press, Gainesville: i-xv, 1-68; pls. Tadpole Physa Identification. (Thompson, 1968). Shell shaggy with numerous spiral fimbriations that are broken into synchronized tufts. Aperture ovate; baso-columellar angle not extended; basal lip not indented. The island apple snail is the largest of the known species in Florida with shell sizes up to five inches in length. Florida authorities believe that the snail, native to eastern Africa, was reintroduced to the state when someone brought it home as a pet. Vertical ribs smooth along the periphery, strongly developed (Fig. You can also navigate through the images by clicking on the arrows near the left and right edges of the enlarged view. Acad. 76). The first edition of The Freshwater Snails of Florida: a Manual for Identification was published in 1984. (Thompson, 2000). Accessory crest present. (Mihalcik & Thompson, 2002). Suture relatively shallow. 116a, 116b). Shell elliptical-ovate in shape. Serrated Crownsnail 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. This is essential in the case of the Hydrobiidae. Ponderous Siltsnail Umbilical perforation narrow, 1/8 1/10 diameter of shell. Melanoides turricula Apex of shell slightly convex in outline. Shell generally elliptical in outline. Penis with 4-6 papillae along right margin (Fig. Shell moderately elevated, over 0.25 times as high as long. 17, 29-32), shell usually banded in Florida forms. 119). 158). 92). Common name: Florida applesnail Taxonomy: available through Identification: This species is the largest freshwater gastropod native to North America (Burch 1982). 63). Banded Mysterysnail 173). Fossaria cubensis The state says a "gastropod enthusiast" collected unusual snails in the Coconut Grove area back in August. A single glandular crest present on apex of terminal lobe (Figs. Suture not as deeply impressed as in 77b. Laevapex peninsulas (Clench, 1925). 84). Floridobia leptospira Additional surveys found four different populations all associated with the CSX railways. Shell larger, reaching a maximum diameter of 18 mm. The specie prefer quite clear water, of lakes and backwaters of streams andsprings. Attains a length of about 30-36 mm (Figs. Narrowly umbilicate. This will lead you to the final choice which identifies the snail. 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 elongate, thin, transparent, grayish. Shell brightly banded and with large, wide and wavey vertical folds; robust, usually 21-25 mm long (Fig. Apex nearly straight-sided or concave in outline. Thompson, F. G. 1969. Umbilicus narrow (Figs. 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. The shells should be rinsed frequently in tap water during the cleaning process to prevent etching by the acid. (Thompson, 2000). Mantle cavity with gill on dorsal surface. Two occur in Florida. The manual treats only those genera that occur in freshwater. Unlike other brown-tinted giant snails, this. (Lea, 1842). CLICK ON EACH PHOTO Fallen Angel Wing -Atlantic Mud Piddock Boring Angel Wing- Striate Piddock Rice Olive Newborn young about 3 mm in diameter. Florida Horse Conch ( Triplofusus giganteus) is the largest snail in North America and is Florida's state shell.