Table 1 in A New Species of Apple Snail in the Genus Pomacea (Gastropoda: Caenogastropoda: Ampullariidae)

Table 1. Morphological comparison of Pomacea occulta nov. sp. with Pomacea maculata and Pomacea canaliculata. Typical characteristics of Pomacea maculata and Pomacea canaliculata are from Hayes et al. (2012). Columns in gray are features shared by two species
Pomacea maculataPomacea canaliculataPomacea occulta nov. sp.Adult shellThicknessThickThinThickSurfaceGeneral smooth, fine axial growthSmoothGeneral smooth, fine axial growthlines and frequent periodic growthlines and frequent periodic growtharrestsarrests, channeled sutures andspiral lined shallow malleationBody whorl shoulderAngulatedRoundedAngulatedInner pallial lipPigmented yellow-orange-redUnpigmentedPigmented yellow-orange-redOperculumInflexible, evenly thickFlexible, thinning dorsally towardsFlexible, thinning dorsally towardsedgeedgeAnatomical charactersKidneyAnterior leafletsNarrowBroadBroadPosterior leafletsShallow cleft with arc topDeep tapering cleftDeep tapering cleftRadulaRachidian baseConcaveConvexConcavePenis sheath glandsApical gland and basal glandApical gland and medial gland,Apical gland and medial gland,medial gland located right of themedial gland located in the sheathsheath channel and extending intochannelchannelEggsEggs per clutchA few hundred to> 450012 to ~100087 to ~1000Average egg diameter<2.00 mm> 3.00 mm2.38 mmOne-day hatchlingsMean hatching height1.249 mm2.754 mm2.23 mmMean first whorl width of hatchling0.812 mm2.406 mm2.11 mm