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The Genus Daedalochila In The Southeastern United States |
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The pulmonate landsnail genus Daedalochila Beck, 1837, the
topic of this station on the website, is based on Polygyra
auriculata Say, 1818. This type-species determination was a
little complicated, but Pilsbry (1938) gave a clear review of the
relevant nomenclatorial history. The fullest appreciation of the type species of any genus is critical to comprehension of the boundaries of that group of species. Indeed, authentic material of all named members of the genus is basic to the understanding the range of variation of each species in the group. For the best perception of phylogenetic relationships within any taxonomic group, certain principles are indispensable: examination of material collected at, or as close as possible to, type localities of named taxa; the examination large suites of specimens; and the integration of several taxonomic tools (e.g. shell characters, ecological and zoogeographic factors, soft anatomical characters, and even genetic/molecular attributes). The purpose of these Daedalochila pages is to depict and analyze the taxonomy of this genus, beginning with its type species, and extending into other named and likely un-named congeners. This will be an ongoing project, and it will, of necessity, combine original fieldwork, literature review, and some elements of modern systematics. Attention will be paid to those principles enunciated above, but emphasis will be on conchological, ecological and zoogeographical study. More sophisticated studies by professional zoologists at the University of Florida using material generated by this project (preserved soft parts for anatomic dissection and for genetic/molecular analysis) will supplement our determinations. Perspectives generated by the latter technologies will inform an integrated phylogeny. It is uncertain if the more traditional tools we are utilizing will prove as powerful as more modern methods in understanding the natural relationships among these engaging little snails, but we confidently predict there will be a significant revision of their current systematic treatment as a result of our labors. In deference to the scientists involved in this project, specific details on collection localities, results of anatomical and molecular studies, and the proposal of any new scientific names will not be posted to these pages until after publication of those aspects of the study in the peer-reviewed literature. |
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Compendium of Daedalochila type material - a pictorial gallery |
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| Digital photography of the type material performed by Paul Callomon, Collections Manager, Division of Malacology, Academy of Natural Sciences, Philadelphia | |
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Page One (auriculata, auriformis, avara) | Page Two (bicornuta, carolina, espiloca) |
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Page Three (hausmani, margueritae, peninsulae) | Page Four (postelliana, senecta, striata) |
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Side-by-side comparison of Daedalochila auriculata, D. bicornuta, D. uvulifera striata and D. sp. |
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| Side-by-side comparison of Daedalochila uvulifera striata, D. peninsulae, D. delecta and D. cf. subclausa | |
| Side-by-side comparison of Daedalochila peninsulae and D. hausmani | |
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[Click on the images below for additional images and information pertaining to the species.] |
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| Daedalochila auriculata (Say, 1818) | Daedalochila avara (Say, 1818) |
| Ocala Liptooth | Florida Liptooth |
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| Daedalochila bicornuta (Pilsbry, 1900) | Daedalochila hausmani (Jackson, 1948) |
| "Two-horn Liptooth" | Dixie Liptooth |
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| Daedalochila peninsulae (Pilsbry, 1940) | Daedalochila postelliana carolina (Pilsbry, 1940) |
| St. Johns Liptooth | |
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| Daedalochila uvulifera (Shuttleworth, 1852) | Daedalochila uvulifera striata (Pilsbry, 1940) |
| Peninsula Liptooth | |
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| Daedalochila cf. uvulifera (Shuttleworth, 1852) | Daedalochila species |
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