Scarf Model Exercises, Articles F

120). The species was eradicated again in 2021 after being detected in 2011 in Miami-Dade County, according to FDACS. 107, 108). POMATIOPSIDAE 2002. It can grow to a length of 16 inches (400 millimeters) and is easily identifiable by the left-handed opening of the shell - meaning when you look at the shell, the opening is on the left. Spire of adults with heavy vertical ribs; unicolor dark brown; usually less than 18 mm long (Figs. Shell elongate-conical, with about 5-7 whorls. Though small, this elusive specimen is a rare and valuable jewel, waiting to be discovered. (Weatherby, 1879). The number of subfanilies recognized in the Hydrobiida is unsettled. 65). Whorls shouldered above near suture (Fig. A taxonomic revision of the feshwater snails referred to as Elimia curvicostata, and related secies. It was first identified in Florida by Dr. Harry G. Lee, who discovered the snail in Duval County in 2009. Evolution has proceeded primarily through reproductive and trophic specializations. 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). 59). Florida Shell Guide. (Pfeiffer, 1839). (Walker, 1908). Amber to milky white in color (Figs. 44). Parietal margin of operculum concave (Fig. Aphaostracon xynoelictus Those had gray-brown flesh. Is non-native to the area, in our case northwest Florida Umbilical perforation narrow, 1/8 1/10 diameter of shell. (Conrad, 1834). Snails on corn. Spiral or costate sculpture usually present. Apex nearly straight-sided or concave in outline. Maiden Campeloma 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. Fossaria is found throughout North America, and in northern Europe. Female shell about 3.5-4.0 mm long (Fig. Floridobia is known from peninsular Florida north along the Atlantic seaboard to Maine. Walkerana, 1: 81-365. Nautilus, 32: 71. Floridobia fraterna Since then a great amount of fieldwork has taken place throughout Florida, and many additions to the fauna have come to light. An invasive, giant snail species, that can also lead to outbreaks of meningitis, has been found in New Port Richey. Recent studies treat amnicolids as a separate families. The shell characters given above for separating the families apply only to Florida species. Most snails will have a conical shaped shell. Aphaostracon monas One species, C. chinensis malleatus (Reeve, 1863) (Fig. Shell conical with strongly arched whorls and a deeply impressed suture. Escambia Elimia Others were new taxa not found in earlier surveys. Interior of aperture livid white. Shell smooth. Body whorl compressed (Fig. 204-207), often eroded in older specimens. Bulletin of the Museum of Comparative Zoology, 129: 401-61. Thiarids are found in tropical and subtropical regions of the world. The reader will discover how very little we know about any genus occurring in Florida. Floridobia ponderosa Thick-shelled Hydrobe Penis filament black. Ferrissia mcneilli There were no references to cover the entire state. 32). Adults about 6-8 mm wide (Figs. Melanoides tuberculata 70, 71). Minor spiral sculpture weak or absent. 199). Whorls of spire pointed and scalariform (steplike with nearly flat shoulders and deep sutures). Newborn young about 3 mm in diameter. Penis with a single papilla along left margin (Fig. Curator of Malacology The profile of the whorls and their comparative size can also help determine the species. Shell larger, reaching a maximum diameter of 18 mm. The Florida Department of Agriculture and Consumer . Aperture large, oval, much more than half the length of shell. 46). 159-161). Browse and enjoy! Mantle mottled with black spots and blotches. Only Elimia is found in Florida. Marsh Rams-horn Apex distinctly convex in outline. (Thompson, 1968). Mihalcik, E. L. & F. G. Thompson. However, formalin is an excellent fixative for short-term preservation. 94). Combining characteristics of cranes and rails, it . Tarebia granifera Shell dull. 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. Shell elongate, thin, transparent, grayish. In 1976 in the St. Johns River 1 found Melanoides tuberculatus with population densities of 10,000/m2. Penis with 3-7 papillae along right margin and a projection with 1-4 papillae near end on left side (Figs. Penis simple, elongate-conical, without papillae (Fig. Eight species have been proposed. 15). Aperture ovate; broadly attached to preceding whorl. This genus of minute freshwater snails is endemic to the Florida peninsula. 1982. Shell elliptical-ovate in shape. Amnicola rhombostoma A single species consisting of two highly variable subspecies occurs in Florida. Shell with 3-4 whorls. Adults about 2-3 mm long (Figs. Brackish-water genera, Onobops and Heleobops, that are common in Florida are omitted. 17-29). Specimens then are placed in a fixative such as 10 percent formalin or Bouins Solution. Penis of males with papillae along sides (Figs. 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. Marsh Sprite Our state park system has won national awards . All freshwater limpets in the southeast belong to this family. Suture weakly impressed. 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. Vertical ribs smooth along the periphery, strongly developed (Fig. Bantam Hydrobe 208, 209), although radial striations may be present on other areas of shell. Melanoides tuberculata (Muller) in Florida. Alexander Siltsnail 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. Six species are known to occur in Florida. Shell cylindric-conical with 4.5-5.0 whorls. Earlier whorls of adult shell with vertical ribs and spiral chords. 100). 159, 162, 165). Cockscomb Hydrobe Last few whorls in large adults scalariform. Quarterly Journal of the Florida Acaemy of Sciences, 32: 241-65. Shell depressed. 51, 52). Aperture never with a septum. Ecology: This large snail is found in freshwater lakes, rivers, streams, ponds and ditches, preferring slow-moving water. 115a, 115b). Whorls uniformly rounded, not flattened above (Fig.144). 1992. 90). Sci. Pseudotryonia brevissimus Operculum spiral, consisting of two or more rapidly increasing whorls (Fig. Incremental striations uniformly weak. Nuclear whorl slightly protruding, 0.29-0.41 mm in diameter transverse to initial suture. Little is known about these animals, and diverse opinions exist as to how many species are recognizable. Squaremouth Amnicola 141). Video. Numerous species of exotic snails are serious pests of plants and threats to public health. There is much disagreement as to how many species actually exist. Female ovoviviparous with about 15 large embryos in uterus. Outer lip straight in lateral profiles. 89, 90). Shell minute, 2.0-2.3 mm long; thin and transparent; spire 0.7-1.1 times length of aperture; flagellum lacking glandular crests. 24, 27). Penis with large a terminal lobe on the left side and a smaller appendix-like flagellum on the right side. Penis with large papilla on right margin near base and one or two papillae on left margin near distal end (Figs. Horse conch in mud Horse Conch snail The mature horse conch can be two feet long! Viviparus contectoides limi, new name for V. c. compactus Pils. Thompson, F.G. 1979. The spire differs between bumpy and smooth but it is always elongated. Florida Press, Gainesville: i-xv, 1-68; pls. 126); accessory crest present on penis. 45). (Vanatta, 1934). Newborn shells brown. By 1973, more than 18,000 snails had been found and destroyed along with thousands of eggs, and the snail was . Length of shell 2.2-2.6 mm (Fig. The molluscan family Planorbidae. Shell with 4.4-5.0 whorls; about 3.7-5.2 mm long. Paper fig A Florida Gulf Coast specialty shell! Radial riblets on entire surface of shell except apex. It wasn't until 2021 the population was. Elimia athearni EDRR Invasive Species. 169, 172). Apex very obtuse, almost in the middle of the shell. Apex less than 0.4 times length of shell. Veliger, 45:269-271. Apical whorls depressed; body whorl obtusely angular above and sharply carinated around funnel-shaped umbilicus. Penny Sprite) Micromenetus floridensis (Baker, 1945). In previous editions of the manual the Florida species were placed in the genus Physella. Penis filament white. Shell distinctly carinated above and below; both apex and base funnel-shaped. Accessory crest present. Three species in Florida were introduced from Southeast Asia. Periphery of body whorl below middle, side of whorl flattened and sloping toward apex (Fig. Unlike other brown-tinted giant snails, this. 203, 209). Some species that are endemic to Florida springs live in environments with nearly constant temperatures and apparently reproduce continuously throughout the year. Outer lip less sinuous. 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. (Thompson, 1968). Aperture widely separated from preceding whorl. Shell usually with raised spiral threads around periphery, frequently the uppermost thread has conical or triangular spines (Figs. Micromenetus d. dilatus 93). Aperture elliptical and usually attached to preceding whorl; 4.1-4.5 whorls present. Shell cap-shaped or limpet-like with a wide, open aperture forming base of shell (Figs. The Junonia is seldom found, and is considered a special find by beachcombers. Adult shell without lamella on interior walls of aperture. 3:51. This monumental work changed all previous concepts concerning subfamilies, genera and species in the family. 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 Shell unicolor, with distinct vertical sculpture in addition to strong spiral sculpture. The reader may be troubled by the imprecise shell characteristics that are used in the key. Shell transparent or opaque. Shell moderately elevated, over 0.25 times as high as long. 67). 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. (Pilsbry, 1889). Fenney Spring Hydrobe 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. Outer lip of aperture arched forward (Figs. Most have monotonously simple, conical or depressed-conical shells that are nearly devoid of taxonomically useful characteristics. 4). Lyogyrus retromargo Shell with spiral chords or spirally arranged series of nodes. Four species currently are recognized, but the genus has received very little study over most of its range. NERITIDAE Bulletin of the Environmental Protection Agency, EPA-600/3-82-026: i-vi, 1-294. 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). 60). Operculum with concentric growth rings around nucleus (Figs. The species made a return in 2011 and eradication efforts took another ten years. Lower margin of aperture not advanced beyond upper margin. Penis with 0-6 papillae confined to right margin (Figs. Melanoides turricula Mantle diffusely pigmented with melanophores (Fig. It is globose in shape, body whorls are wide, spire is depressed, and the aperature is narrowly oval (Burch 1982). Umbilicus open. Similarities in appearance among the exotic species can make identification very difficult. Apex subacute, distinctly eccentric to the right of the midline. Gray to brownish-yellow in color. 72-74). CLICK ON EACH PHOTO Fallen Angel Wing -Atlantic Mud Piddock Boring Angel Wing- Striate Piddock Rice Olive 174-176). Embryonic shell with fine vertical ribs and a heavy spiral chord on periphery and two basal spiral chords (Fig. 1980. Some species are dioecious with a normal representation of males and females. 198, 205). Occasional Papers on Mollusks, 2: 385-412. 39). Elimia annae In view of the inconsistency of these shell characters, these three forms may represent only a single species, Campeloma limum, which is widely distributed from the Escambia River system of Florida and Alabama east and north into North Carolina and Virginia. Identification. 77-79). 1905. Shell elongate. Floridobia porterae Thompson, F.G. 1968. Length of shell 3.0-4.0 mm (Fig. Throughout the 19th and 20th Centuries malacologists made frequent field trips to explore river systems that were poorly known, and to revisit others that were renown for their rich and unique assemblages of species. (Gould, 1841). (This character separates only the genera under consideration; genera from other areas of the world do not conform to this distinction.) 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 12). As of last . Size: 2-4 cm. "If you see one of these snails,. Thin and translucent or transparent. Applesnails are tropical to subtropical organisms and cannot survive below 50F in the winter (Florida DOACS, 2002). Bulletin of the Florida State Museum, Biological Sciences, 1: 97-239. 118). (Fig. Goldenhorn Marisa Apex smooth, with no trace of radial striations (Fig. Penis with 3 papillae along right margin (Fig. 14), was introduced into a fishpond in St. Petersburg about 1921 and into lakes in Orlando about 1940. Operculum calcareous with two pegs on inner surface (Figs. Narrowly umbilicate. Mesa Rams-horn Other families occur elsewhere in North America and in other continents. Operculum tightly coiled with four slowly expanding whorls (Figs. This pest remains a threat in Florida, Hawaii and the Caribbean. 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. Aperture oval, about 0.75 times as wide as high. Conical Siltsnail Few of the North American species have been studied to the extent that their taxonomy, geographic distributions, life histories, and ecology are documented. Laevapex is a North American genus. Shell planispiral, adults large, 35-50 mm (Figs. 22). 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. Floridobia mica Shape highly variable, usually disc-shaped but some specimens with flat-topped raised spire. The planorbid snail Micromenetus dilatatus avus in the West Indies and Central America. Body whorl inflated. Terminal lobe of penis slender. Davis, G.M., M. Mazurkiewicz, & M. Mandracchia. Physella gyrina aurea Penis with 17-50 papillae along right margin arranged in 3-5 rows (Fig. The genus is found along the east coast of North America from Maryland south to Tabasco, Mexico. The lightning whelk ( Busycon sinistrum) is one of the larger univalve snails found in Florida waters. 5). Newborn young about 4.5 mm in diameter (this can be determined by removing juveniles from brood pouch). (Fig. (Goodrich, 1924). Identifications are difficult in many instances without properly preserved specimens. 117). (The penis is normally recurved into the mantle cavity, except during mating. 11). 148). The snails remain a threat in Hawaii and the Caribbean after their eradication in Florida in 2021. Shell small, 2.0-2.8 mm long. The bodies of large snails, such as viviparids and pilids, should be pulled from the shell. Dense Hydrobe Malacological Review, 24: 55-72. Aperture loosely attached to or widely separated from preceding whorl. Two-ridged Rams-horn 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. 3). There is no consensus in systematic biology about how to treat these forms. 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. Some hydrobiid snails from Georgia and Florida. Female oviparous, never with embryos in uterus. Haitia bermudezi Pomacea canaliculata Shell usually large, about 12-16 mm long. (Thompson, 1969). Penis with a few simple scattered superior tubercles on outer surface; parapical crest on a low ridge; accessory crest and inferior crest absent (Fig.