Diala sulcifera, SCOBINA

Strong, Ellen E., 2011, More than a gut feeling: utility of midgut anatomy in phylogeny of the Cerithioidea (Mollusca: Caenogastropoda), Zoological Journal of the Linnean Society 162 (3), pp. 585-630 : 595

DIALA SULCIFERA SCOBINA (LASERON, 1950)

Material examined

South Pacific Ocean : Australia: NSW: Careel Bay, 33°36.9′S, 151°19.6′E ( USNM 1083788 ) .

Description

Marginal fold S-shaped ( Fig. 6A ), extending well past posterior end of sorting area; oesophageal aperture at apex of marginal fold recurved segment; sorting area curving, tapering posteriorly with ill-defined folds; left margin of sorting area with slight bulge; sorting area pad, anterior flap, crescentic pads, and accessory marginal fold lacking; glandular pad forming small, rounded mound projecting short distance posteriorly behind gastric shield; single digestive gland duct opening at left of glandular pad; crescentic ridge forming small diverticulum from posterior end of glandular pad, with proximal tip well posterior to digestive gland duct; accessory pads, caecum, and caecal folds lacking; U-shaped fold present below style sac aperture; typhlosoles unfused.

Figures

Figure 6. Midgut anatomy of Dialidae (A) and Diastomatidae (B). A, Diala sulcifera scobina (USNM 1083788). Scale bar: 0.5 mm. B, Diastoma melanioides (USNM 801614). Scale bar: 1.0 mm. Refer to the text for a list of anatomical abbreviations.