| Similar Partula | |
|---|---|
_affinis_Pease,_1868_-_Partulidae_-_Mollusc_shell.jpeg)
| |
Scientific classification 
| |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Order: | Stylommatophora |
| Family: | Partulidae |
| Genus: | Partula |
| Species: | P. affinis
|
| Binomial name | |
| Partula affinis Pease, 1868
| |
| Synonyms | |
|
Partula otaheitana affinis | |
Partula affinis is a species of partulid within the genus Partula. The species is rarely referred to as the similar partula[1], and is endemic to Tahiti.
Distribution
editP. affinis' historical distribution represents almost all of Tahiti, but now its modern distribution includes only one population in Tahiti Iti, making it now considered a single valley endemic.[2]
Captive breeding
editP. affinis is in the international Partula breeding program and the conservation efforts for this species have been very successful, allowing reintroductions since 2015.[3]
Phylogeny
editPhylogenetic analyses confirmed that P. affinis is the sister species of P. otaheitana.[4]
Taxonomy
editP. affinis was originally described as a subspecies of P. otaheitana (P. otaheitana affinis) but is now recognized as a distinct species.
Original description
editThe original description is available online here.
| PARTULA AFFINIS, Pease.
Description.—T. elongato-ovata, solidiuscula, haud nitens, compresse umbilicata, dextrorsa; anfr. 5, plano-convexis, ultimus 2 longitudinis teste subeequans, sutura impressa, interdum sub- marginata; longitudinaliter tenui rugosim irregulariter striats transversim minutissime striata; apertura ovata; labro angu*te calloso, interdum margine columellari adnato; columella den tata; castanea, interdum longitudinaliter straminea strigata, 10° omnino straminea. Var.; fasciis tribus fuscis cingulata. Dimensions.—Long. 16, diam. 9 mill. Habitat.—Tahiti. Shell elongately ovate, rather solid, compressly umbilicate, dextral, finely, roughly and irregularly striated longitudinally, transversely very minutely striate, sutures impressed, sometimes faintly marginated; lip narrowly thickened, occasionally con- nected with the columella by a thin callosity ; columella dentate. Color light or dark chestnut brown, sometimes striped with darker or wholly of a straw color. Var.; encircled with three dark reddish brown bands, on middle of last whorl, at the umbilicus, and just beneath the suture. Observations.—The above species is allied to P. Otaheitana. It is, however, smaller and less elongate. |