Page 28 - Land Snails of New Mexico

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2a Aperturewithseveralteeth,shellsdepressed...............................................................3
2b Aperturetoothless,shellsrelativelyelevated...............................................................4
3a Shellwith4teeth,parietal,upperpalatal,and2basalteeth,withrepresentativesinMogollonand
southern San Mateo Mountains, and in central Black Range .............................Ashmunella tetrodon (p. 57)
The A. tetrodon complex is in need offurther study. S o m e populations from the southwestern Mogollon Mountains, described as subspecies of tetrodon by Pilsbry and Ferriss (1915), have fewer or no teeth, and may be hybrids between A. tetrodon and A. mogollonensis.
3b Shellwith3teeth,lackingaparietaltooth,butwithupperpalataland2basalteeth,speciesof
western canyons of the Mogollon Mountains ......................................... Ashmunella danielsi (p. 59)
4a Shellrelativelydepressed,weaklytostronglycarinate,withfinetocoarsegranulation,speciesof
SouthernBlackRange ..........................................................Ashmunellacockerelli(p.57)
PilsbryandFerriss(1917)recognized3 subspeciesofA.cockerelli:(1)thenominal(=samename asspecies)subspecies,foundin the southwestern part of the range, isstrongly carinate and coarsely granulose, (2) argenticola, to the north in the Silver Creek drainage, carinate, but finely granulose, and (3) perobtusa, from southeastern slopes of the range, finely granulose, and body whorl, peripherally, m o r e angular than carinate.
4b Shellrelativelyelevated,notcarinateorgranulose..........................................................5
5a AspeciesoftheMogollonMountainsandwestwardtotheBlueMountainsofArizona
* * * * * * * * * * * * * - - - - - - - - - - * * * * * * * * * * * * * * - - - - - - - * * * * * * * * * * * * * * * - - - - - - - - - - - - - Ashmunellamogollonensis(p.58)
5b SpeciesoftheBlackRange..............................................Ashmunellamendax,A.binneyi(p.58)
We seenodistinguishingdifferencesbetweenshellsofA.mendaxandA.binneyi.We retainthemasseparatespeciesonthebasis of slight differences in anatomy of the genitalia reported by Pilsbry (1940:945,946).
6a SpeciesoftheBigHatchetandnearbymountains...........................................................7
6b SpeciesnotoftheBigHatchetMountainsarea.............................................................8
7a Shellsmoothandglossy,nothickenedparietalcallus,peripheryofbodywhorlweaklyangular **************************************************************************** Ashmunellamearnsii(p.60)
7b Shellgranulose,rough-textured,notglossy;thickenedparietalwallofperistomedetachedfrom
the adjacent body whorl wall to the left, carinate ...................................... Ashmunella hebardi (p. 60)
There m a y be hybridization between A. mearnsii and A. hebardi, as intermediate forms have been found.
8a Shellwithonlyoneparietaltooth........................................................................9
8b Shellwithupperandlowerparietalteeth.................................................................10
9a Shellscarinate,aspeciesoftheFloridaMountains,LunaCo..............................Ashmunellawalkeri(p.59) 9b Shellsangular(notcarinate);aspeciesoftheAnimasMountains,southernHidalgoCo....Ashmunellaanimasensis(p.60)
10a A speciesofMountRileyofsouthernDoñaAnaCo. .................................Ashmunellarileyensis(p.59)
10b AspeciesofCookePeak,LunaCo. ...........................................Ashmunellamacromphala(p.59)