Integrative systematics reveals the new land-snail genus Taphrenalla (Eupulmonata: Ariophantidae) with a description of nine new species from Thailand
Asst. Prof. Ekgachai Jeratthitikul
The endemic terrestrial Crown Snail from Southern Thailand formerly in Macrochlamys Gray, 1847 is being named to Taphrenalla Pholyotha & Panha 2021, based on comparative morphology and molecular data. Overall, eleven Taphrenalla species are now recognized, including two nominal species: T. asamurai and T. diadema. A total of nine additional species are also proposed: T. alba, T. conformis, T. corona, T. dalli, T. incilis, T. macrosulcata, T. parversa , T. pygmaea and T. zemia. The molecular phylogeny constructed from the mitochondrial cytochrome oxidase c subunit I (COI) and 16S rRNA gene fragments plus the nuclear 28S rDNA gene fragments revealed that Taphrenalla is monophyletic with a well-supported clade. The diagnostic characters of Taphrenalla. are the shell sculpture with several radial grooves, body with well-developed colourful stripes running from the head to tail, and genitalia similar to Macrochamys but with an un-coiling epiphallic caecum. The spermatophore has one or two spines near the sperm sac and a spineless tail.
Representative living specimens of Taphrenalla
Pholyotha, A., Sutcharit, C., Tongkerd, P., Jeratthitikul, E., Panha, S. (2021). Integrative systematics reveals the new land-snail genus Taphrenalla (Eupulmonata: Ariophantidae) with a description of nine new species from Thailand. Contributions to Zoology 90: 21-69. https://doi.org/10.1163/18759866-BJA10013