A new genus, Denhamiana gen. nov., and two new species of land snail from inland central Queensland (Eupulmonata, Camaenidae)

Denhamiana gen. nov. is established for at least two new species of camaenid land snail from inland mid-eastern Queensland. D. laetifica sp. nov. occurs in an area stretching from just west of Eungella, southward through the Denham Range to Pine Mountain, south-east of Nebo, while D. leichhardti sp. nov. is hitherto known only from the more westerly Carborough Range. A third species Denhamiana sp. nov. ‘Dipperu’ is proposed awaiting more specimens. These camaenids are characterised by a combination of morphological features including a large helicoid shell with bold dark brown spiral bands and dark brown apertural lip, a closed umbilicus and a reproductive system featuring a reduced epiphallus, a short vestigial epiphallic flagellum and a cylindrical, sheathed penis that internally has a penial stimulator and triangular verge. Molecular study of one of the species indicates that the genus is a sister group to Bentosites Iredale, 1933 whose species occur in coastal and sub-coastal rainforests in localities between Ayr and Sarina, mid-eastern Queensland.