Sinicolinae, Páll-Gergely, 2018

Subfamily Sinicolinae View in CoL subfam. nov.

urn:lsid:zoobank.org:act:7AA09CFF-D5FD-4DB1-98BE-9DB9E41F6B82

Type genus

Sinicola Gude, 1899 View in CoL .

Included genera

Gudeodiscus Páll-Gergely, 2013 View in CoL (with the subgenus Veludiscus Páll-Gergely, 2015 ), Endothyrella View in CoL , Halongella Páll-Gergely, 2015 View in CoL , Sicradiscus Páll-Gergely, 2013 View in CoL , Sinicola View in CoL .

The Eocene fossil genus Plectopyloides Yen, 1969 View in CoL (type species: P. cretaceous Yen, 1969 ; synonyms: Henanspirus Li, 1986 , Menyinspirus Li, 1986 , Yenellus Li, 1986 ) is also classified in this subfamily, because it is most similar to Gudeodiscus View in CoL (see Páll-Gergely & Asami 2014).

Diagnosis

Shell usually dextral (although most species of Endothyrella are sinistral), flat to conical-globular; umbilicus wide to narrow; protoconch regularly ribbed without any additional sculptural elements (very rarely smooth, see Páll-Gergely et al. 2015 b, 2015 c); apertural fold present or absent; main plica usually absent (present only in Gudeodiscus longiplica Páll-Gergely & Asami, 2016 ). Penis well-developed; penial caecum well-developed to absent; epiphallus present; diverticulum as long as bursa copulatrix (absent in some species, although possibly overlooked during dissection).

Distribution

Same as in the family Plectopylidae , except Thailand and the Malay Peninsula ( Fig. 3 View Fig ).

Remarks

The subdivision of the family into two reciprocally monophyletic groups is supported by molecular phylogenetic analysis, which included nearly all genera. Discussion of the phylogenetic results is beyond the scope of the present revision, and will be discussed in a separate paper.