Exiligada gregoriana Criscione &amp; Law &amp; Köhler 2012, SP. NOV.
Creators: name: Criscione, Francesco
name: Law, Margot Louisa
name: Köhler, Frank
Publisher: name: Zenodo
Year: 2012
Subjects: Biodiversity
Taxonomy
Animalia
Mollusca
Gastropoda
Stylommatophora
Camaenidae
Exiligada
Exiligada gregoriana

description: EXILIGADA GREGORIANA SP. NOV. (FIGS 5E, 12A–C, 13) <i>Holotype:</i> AUSTRALIA, NT, VRD, Gregory NP, 41.5 km south-south-east of Bullita O /S, 16°28 <i>′</i> 47 <i>′′</i> S, 130°32 <i>′</i> 11 <i>′′</i> E (coll. V. Kessner, 14.vii.2008) (AM C.475766). <i>Paratypes:</i> AUSTRALIA, NT, VRD, same data as for holotype, 23 dry, one wet (AM C.462768); 30 km south-south-west of Timber Creek, NT, 15°46 <i>′</i> 16 <i>′′</i> S, 130°13 <i>′</i> 41 <i>′′</i> E (coll. V. Kessner, S. Roberts, 12.vii.2008), four wet (AM C.462820). <i>Etymology:</i> Name chosen for similarity with <i>Adansonia gregorii</i>, the baob tree under which snails were found, and the name of Gregory National Park, derived from ‘gregorianus’ (Latin), adjective of feminine gender. <i>Description:</i> Shell (Figs 5E, 12A–C). Moderately large, moderately elevated, moderately thin; micropustulations absent; background colour brownish horn fading to whitish towards shell base, without band or with one conspicuous to faint, continuous, relatively wide, brown-reddish peripheral band; no maculations. Genitalia (Fig. 13). Epiphallus two times longer than penis. Vas deferens entering penial sheath within anterior third. Penis four times longer than wide, not coiled inside sheath, inner penial wall with highly complex sculpture formed by several crowded, irregularly shaped, corrugated longitudinal pilasters running along entire wall length, giving rise to padlike thickenings. Vagina one quarter shorter than penis and free oviduct, bursa copulatrix with short, rounded, well-differentiated end. <i>Remarks:</i> Along with <i>E. calciphila</i> and <i>E. rivifontis</i>, largest number of shell whorls. Teleoconch microsculpture differing from that of <i>E. calciphila</i> by presence of micropustulations. Shell colour pattern very similar to <i>E. floraevallis</i>, <i>E. calciphila</i>, <i>E. limbunya</i>, <i>E. rivifontis</i>, and <i>E. unistriata</i>. Penis length relative to width (pl/pw) average and longer than in <i>E. calciphila</i>. Epiphallus length relative to penis (el/pl) two times the average and as long as in <i>E. calciphila</i>. Penial inner wall sculpture almost identical to <i>E. calciphila</i>, but having more pilasters with increased corrugation. Vagina length relative to penis (vl/pl) larger than average and <i>E. calciphila</i>. Vagina length relative to free oviduct (vl/ol) shorter than average and <i>E. calciphila</i>.
description: Published as part of <i>Criscione, Francesco, Law, Margot Louisa &amp; Köhler, Frank, 2012, Land snail diversity in the monsoon tropics of Northern Australia: revision of the genus Exiligada Iredale, 1939 (Mollusca: Pulmonata: Camaenidae), with description of 13 new species, pp. 689-722 in Zoological Journal of the Linnean Society (Zool. J. Linn. Soc.) (Zool. J. Linn. Soc.) 166 (4)</i> on page 703, DOI: 10.1111/j.1096-3642.2012.00863.x, http://zenodo.org/record/5409181