Gyraulus is a genus of small, mostly air-breathing, freshwater snails, aquatic pulmonate gastropod mollusks in the family Planorbidae, the ram's horn snails.

The genus Gyraulus is known from the Early Cretaceous to the present. Fossils attributed to Gyraulus sp. have been found in the lakebottom sediments of the Yixian Formation in China, dating to 125 million years ago.

Description

Shells of the species within this genus are small, and are mostly almost planispiral in their coiling.

Distribution and habitat

The distribution of this genus is Holarctic. These snails live on water plants in freshwater.

Species

The following species are recognised in the genus Gyraulus:

• Gyraulus acronicus

• †Gyraulus aegaeus

• †Gyraulus albertanus

• Gyraulus albidus (Lake Ohrid, Albania and North Macedonia)

• Gyraulus albus (Caucasus, Central Asia, Europe, Russia and northern Middle East)

• †Gyraulus alienus

• Gyraulus amplificatus

• Gyraulus amuricus

• †Gyraulus andrussovi

• †Gyraulus antunesi

• †Gyraulus applanatus

• Gyraulus argaeicus (Turkey)

• †Gyraulus arminiensis

• Gyraulus associatus

• Gyraulus atkinsoni

• †Gyraulus austroalpinus

• †Gyraulus bachmayeri

• Gyraulus barrackporensis (India and Bangladesh; however, due to incomplete distributional data, it may he also present in Bhutan, China, and Nepal)

• Gyraulus bakeri (northern Thailand)

• †Gyraulus bakonicus

• †Gyraulus balmensis

• Gyraulus balteatus

• Gyraulus bekaensis (Lebanon)

• †Gyraulus bigueti

• Gyraulus biwaensis

• †Gyraulus blazkai

• †Gyraulus bondartchuki

• Gyraulus borealis

• †Gyraulus bosqueti

• †Gyraulus brlici

• Gyraulus brongersmai

• †Gyraulus brusinai

• †Gyraulus calamensis

• Gyraulus centrifugops

• Gyraulus centrifugus

• †Gyraulus ceratioides

• †Gyraulus chaenostomus

• †Gyraulus chapmani

• Gyraulus chinensis (East and Southeast Asia, Mongolia and less likely Papua New Guinea .However, it was also introduced to Europe)

• Disk Gyro (Gyraulus circumstriatus) (Canada and the US)

• Gyraulus clymene (Canary Islands, Spain)

• Gyraulus cockburni (Socotra island, Yemen)

• †Gyraulus connivens

• Gyraulus connollyi (Eswatini and South Arica)

• †Gyraulus constans

• Gyraulus convexiusculus (Asia)

• Gyraulus cordatus

• Gyraulus corinna (New Zealand)

• †Gyraulus costatus

• Gyraulus costulatus (Africa)

• †Gyraulus courpoilensis

• Gyraulus crenophilus (Lake Orhid, Albania and North Macedonia)

• †Gyraulus crescens

• Nautilus Ram's-horn Snail (Gyraulus crista)

• †Gyraulus cryptornatus

• †Gyraulus dalmaticus

• †Gyraulus dealbatus

• Gyraulus deflectus

• †Flexed Gyro (Gyraulus deflectus) (Canada and northern US)

• Gyraulus demissus

• †Gyraulus denudatus

• †Gyraulus dimitrovici

• †Gyraulus distortus

• †Gyraulus dongcunensis

• †Gyraulus dongcunensis

• †Gyraulus doricus

• †Gyraulus doseni

• †Gyraulus douvillei

• Gyraulus edgbastonensis (Queensland, Australia)

• †Gyraulus edlaueri

• Gyraulus egirdirensis

• Gyraulus ehrenbergi (Nile river, Egypt)

• Gyraulus eichwaldi

• Gyraulus elenae

• †Gyraulus elisus

• Gyraulus essingtonensis

• Gyraulus eugyne

• Gyraulus euphraticus (Afganistan, China, Middle East, South Asia and Turkey)

• Gyraulus feuerborni

• †Gyraulus florissantensis

• Gyraulus fontinalis (Lake Orhid Basin, Albania and North Macedonia)

• †Gyraulus formosus

• †Gyraulus fragilis

• Gyraulus frigidarius

• †Gyraulus fuchsi

• †Gyraulus gaoyouensis

• †Gyraulus geminus

• Gyraulus gilberti (eastern Australia)

• †Gyraulus gladilini

• †Gyraulus globosus

• †Gyraulus goetzendorfensis

• †Gyraulus goussardianus

• †Gyraulus gracilis

• Gyraulus hebraicus (Lebanon, Syria and Turkey)

• †Gyraulus helicophantoides

• Gyraulus hesperus (northern coast of Australia in the states of Northern Territory, Queensland and Western Australia)

• †Gyraulus heudei (Vietnam)

• †Gyraulus hians

• Gyraulus hiemantium

• Gyraulus hindsianus

• †Gyraulus hoernesi

• †Gyraulus homalosomus

• Gyraulus homsensis

• †Gyraulus horasanensis

• Tuba Gyro (Gyraulus hornensis) (southeastern Canada and the North Center US)

• Gyraulus hubendicki (southern Thailand)

• †Gyraulus huguenini

• Gyraulus huronensis

• Gyraulus huwaizahensis (Iraq and less likely Iran)

• †Gyraulus ignoratus

• Gyraulus illibatus

• Gyraulus infirmus

• Gyraulus infraliratus

• †Gyraulus inopinatus

• †Gyraulus inornatus

• Gyraulus ioanis (Albania and Montenegro)

• Gyraulus isingi

• Gyraulus iwaotakii

• Gyraulus janinensis (Lake Pambotis, Greece)

• †Gyraulus jugleri

• †Gyraulus jukici

• †Gyraulus jurkovici

• Gyraulus kahuica (New Zealand)

• †Gyraulus katurici

• †Gyraulus keideli

• †Gyraulus kleini

• Gyraulus kosiensis

• †Gyraulus kosovensis

• †Gyraulus kraussii

• †Gyraulus krohi

• Gyraulus kruglowiae

• Gyraulus labiatus (South Asia and Myanmar)

• Gyraulus ladacensis

• Smooth Ram’s Horn Snail (Gyraulus laevis) (Caucasus, Europe and Morocco)

• †Gyraulus laiwuensis

• †Gyraulus lazici

• †Gyraulus lendli

• †Gyraulus liaoxiensis

• Gyraulus limbatus

• †Gyraulus lineolatus

• †Gyraulus lorentheyi

• †Gyraulus loryi

• †Gyraulus ludovici

• Gyraulus luguhuensis

• Gyraulus lychnidicus (Lake Ohrid, Albania and North Macedonia)

• †Gyraulus macroconcha

• Gyraulus malayensis

• †Gyraulus marinkovici

• Gyraulus marocanus

• †Gyraulus matheroni

• †Gyraulus matraensis

• Gyraulus mauritianus (Mauritius. However, it may also be present on Réunion Island and Seychelles)

• Gyraulus meierbrooki (Skadar Lake, Albania and Montenegro)

• Gyraulus meridionalis

• Gyraulus messonghi (Corfu, Greece)

• †Gyraulus micromphalus

• Gyraulus mienanus

• †Gyraulus militaris

• Gyraulus minusculus

• †Gyraulus mirabilis

• Gyraulus montrouzieri

• †Gyraulus multicingulatus

• †Gyraulus nedici

• Gyraulus nedyalkovi (Mediterranean Region, Turkey)

• †Gyraulus nematophorus

• †Gyraulus nisseanus

• †Gyraulus novaki

• Gyraulus noziriensis

• †Gyraulus nusici

• †Gyraulus oecsensis

• †Gyraulus okrugljakensis

• †Gyraulus oncostomus

• †Gyraulus orahovacensis

• †Gyraulus oxystoma

• †Gyraulus pachychilus

• †Gyraulus palaeoalbus

• Gyraulus pamphylicus (Turkey)

• Gyraulus pankongensis (Lake Pankong, China and India)

• †Gyraulus parvulus

• †Gyraulus parvulus

• Ash Gyro (Gyraulus parvus)

• †Gyraulus pavlovici

• †Gyraulus peruzzii

• †Gyraulus phacecercus

• Gyraulus piscinarum (Bulgaria, Iran, Israel, Lebanon, Syria and Turkey)

• †Gyraulus placidus

• †Gyraulus planoconcavus

• †Gyraulus planorbiformis

• †Gyraulus platystomus

• †Gyraulus pleiopleurus

• †Gyraulus pliosibericus

• †Gyraulus polycymus

• †Gyraulus ponticus

• †Gyraulus popovici

• †Gyraulus porcellaneus

• †Gyraulus praeponticus

• †Gyraulus praesibericus

• Gyraulus prasongi (southern Thailand and possibly Malaysia)

• †Gyraulus primiformis

• Gyraulus proclivis

• †Gyraulus protectus

• †Gyraulus protocrescens

• †Gyraulus pseudhomalosomus

• †Gyraulus pseudotenuis

• †Gyraulus ptychostomus

• †Gyraulus ptycophorus

• †Gyraulus pulici

• Himehiramakimizumaimai (Gyraulus pulcher) (Amaji and Shikoku islands, Japan)

• †Gyraulus quadrangulus

• †Gyraulus rabensis

• †Gyraulus rasseri

• †Gyraulus revertens

• †Gyraulus rhytidophorus

• Sjöskivsnäcka (Gyraulus riparius) (northwestern Europe (Benelux and Nordic regions) and fractured range in the Baltics, Belarus, and Central Europe)

• Gyraulus rossiteri (New Caledonia)

• Gyraulus rossmaessleri (Central and Eastern Europe, Baltics, Benelux and Romania)

• †Gyraulus rotella

• Gyraulus rotula (India, Sri Lanka and less likely Thailand)

• †Gyraulus rotundistomus

• †Gyraulus rotundostomus

• †Gyraulus rumanus

• †Gyraulus sabljari

• †Gyraulus sachsenhoferi

• †Gyraulus saltensis

• †Gyraulus sauerzopfi

• †Gyraulus scabiosus

• Gyraulus scottianus

• †Gyraulus sebetinus

• †Gyraulus seibersdorfensis

• Gyraulus sentaniensis

• Gyraulus shasi (Albania and Montenegro)

• Gyraulus siamensis (Cambodia, Laos, Malaysia, Thailand and Vietnam)

• †Gyraulus sibinjensis

• †Gyraulus sigillatus

• Gyraulus sivalensis

• †Gyraulus slavonicus

• †Gyraulus soceni

• †Gyraulus solenoeides

• Gyraulus spirillus

• †Gyraulus spratti

• †Gyraulus spretus

• Gyraulus stankovici (Lake Prespa, Albania and Northern Macedonia)

• †Gyraulus steinheimensis

• †Gyraulus stenocyclotus

• †Gyraulus stoppanii

• Gyraulus stromi

• †Gyraulus subhemistoma

• †Gyraulus subverticillus

• †Gyraulus sulfureus

• Gyraulus sumatranus

• †Gyraulus supremus

• †Gyraulus symmetricus

• Gyraulus takhteevi

• Gyraulus taseviensis (Lake Egirdir, Turkey)

• †Gyraulus tenuistriatus

• Gyraulus terekholicus

• Gyraulus terraesacrae (Java, Indonesia)

• †Gyraulus tetracarinatus

• Gyraulus tokyoensis

• †Gyraulus transsylvanicus

• Gyraulus trapezoides (Lake Ohrid, Albania and North Macedonia)

• †Gyraulus tressinensis

• †Gyraulus triquetrus

• †Gyraulus trochiformis

• †Gyraulus trolli

• †Gyraulus turislavicus

• Gyraulus umbiliciferus

• Gyraulus vermicularis

• †Gyraulus verticilloides

• Gyraulus velifer (Inlé lake, Myanmar)

• Gyraulus verticillus

• †Gyraulus veternus

• †Gyraulus virgatus

• †Gyraulus vrapceanus

• Waterhouse’s Freshwater Snail (Gyraulus waterhousei) (Australia)

• Gyraulus xingtian

• †Gyraulus xinlitunensis

• †Gyraulus yongkangensis

• †Gyraulus yuanchuensis

• †Gyraulus zemendorfensis

• Gyraulus zilchianus (Yangtze River Delta, China)

• †Gyraulus zoebeleini

• †Gyraulus zoltani

References

External links

• BioLib taxonomy info

• at Consortium for the Barcode of Life