Edgbastonia (Barcaldinia), 2019

Zhang, - H., 2019, New taxa of Tateidae (Caenogastropoda, Truncatelloidea) from springs associated with the Great Artesian Basin and Einasleigh Uplands, Queensland, with the description of two related taxa from eastern coastal drainages, Zootaxa 4583 (1), pp. 1-67 : 27

Edgbastonia (Barcaldinia) n. subgen.

Type species: Jardinella edgbastonensis Ponder & Clark, 1990 .

Description. Shell small to moderate in size, elongate-conic to depressed trochiform, whorls convex (angled in one species), aperture subpyriform, peristome slightly to moderately thickened, inner lip usually separated from parietal wall, attached in one species; narrowly to moderately umbilicate; one species non-umbilicate. Columella smooth and simple. Sculpture of growth lines only or weak axial ribs present. Protoconch of 1.2–1.5 whorls, minutely to moderately punctate to pustulate, sometimes with irregular wrinkles. Operculum yellowish, subpyriform, nucleus acentric, inner surface usually without white smear (present in one species), usually without weak protuberance or thickening. Radula with median cusp of central teeth longer and about equal to much wider than adjacent cusps; lateral margins moderate to narrow; basal cusps usually two pairs (rarely one), innermost short to moderate, usually narrow. Male with prostate gland pyriform to bean-shaped, with about third to slightly more than half of length in pallial wall. Pallial vas deferens strongly undulating to coiled. Penis variable, distal end usually tapering, expanded in few species, sometimes with short to long papilla. Female with coiled oviduct rather short, forming simple vertical arch or loop. Bursa copulatrix lies mostly behind or beneath albumen gland. Vestibule simple to greatly expanded; genital opening terminal to subterminal opening ventrally to laterally; cowl or gutter sometimes present.

Contained species. Edgbastonia (Barcaldinia) edgbastonensis ( Ponder & Clark, 1990) , Edgbastonia (Barcaldinia) pallida ( Ponder & Clark, 1990) , Edgbastonia (Barcaldinia) colmani ( Ponder & Clark, 1990) , Edgbastonia (Barcaldinia) corrugata ( Ponder & Clark, 1990) , Edgbastonia (Barcaldinia) jesswiseae ( Ponder & Clark, 1990) , Edgbastonia (Barcaldinia) coreena ( Ponder & Clark, 1990) , Edgbastonia (Barcaldinia) zeidlerorum ( Ponder & Clark, 1990) , Edgbastonia (Barcaldinia) acuminata ( Ponder & Clark, 1990) and six new species and two subspecies described below.

Etymology. Named for the town of Balrcaldine, Queensland. Gender feminine.

Remarks. Members of Barcaldinia n. subgen. differ from typical Edgbastonia in lacking any trace of a columellar fold, in having a yellowish operculum and in the ventral channel being attached and open to the capsule gland.

For convenience, we have grouped the species included in this subgenus into four informal groups, three based on similarity in shell morphology and one group comprising the taxa found in the Einasleigh Uplands. These groups have no taxonomic or phylogenetic status, although the molecular results presented below indicate that there are several distinct groups within Barcaldinia .