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
Author
Zhang, - H.
text
Zootaxa
2019
2019-04-10
4583
1
1
67
journal article
27316
10.11646/zootaxa.4583.1.1
027ed27d-5035-4646-93a6-c23b565f3d20
1175-5326
2637603
27F24995-359E-46F6-AB22-75568BACFDCF
Springvalia
n. gen.
Type
species:
Jardinella isolata
Ponder & Clark, 1990
Description.
Shell small to moderate in size, elongate-conic, whorls convex, aperture subpyriform, peristome thin to slightly thickened, inner lip narrowly to widely separated from parietal wall; narrowly to moderately umbilicate. Sculpture of growth lines only. Protoconch of 1.3–1.5 whorls, finely punctate. Operculum yellowish, subpyriform, flat to slightly concave, paucispiral with last whorl large, nucleus acentric; inner surface with white smear, without thickening or protuberances. Central teeth of radula with median cusp wider and longer than adjacent cusps; lateral margins medium to narrow; innermost basal cusps short to moderate, outer pair very small to absent (as in
Fig. 11A
). Rectum with or without an arch. Male with prostate gland tapering anteriorly and posteriorly, about half in mantle roof. Pallial vas deferens straight or slightly undulating. Penis broadly expanded and flattened distally, rapidly tapering to point or short papilla, glands absent. Female with coiled oviduct forming approximately vertical loop; bursa copulatrix lies beneath albumen gland. Ventral channel with terminal to subterminal opening, vestibule simple to moderately expanded. No cowl or gutter associated with opening.
Distribution.
Discharge springs in the Springvale Supergroup in
Queensland
in the north-western part of the GAB (
Fig. 1
).
Contained species.
Springvalia isolata
.
Etymology.
Named for the town of Springvale,
Queensland
. Gender Feminine.
Remarks.
The new genus contains only one described species,
S. isolata
. It differs from
Jardinella
in having a yellowish operculum, not reddish, and in its elongate-conic shell with the aperture separated from the parietal wall. It also differs in having the penis expanded in the distal part, the ventral channel extending just beyond the capsule gland rather than terminated behind the anterior end as in
Jardinella,
and in the bursa copulatrix being smaller.
Eulodrobia
differs from
Springvalia
in having a tight U-shaped renal oviduct arch that lies in front of the bursa, which is usually larger and more globular in
Eulodrobia
.
Springvalia isolata
is recorded from a new locality below.