Laotiinae Páll-Gergely, 2024

Subfamily Laotiinae Páll-Gergely subfam. nov.

( Fig. 13C–F View Figure 13 )

h t t p: / / z o o b a n k.o r g/ 3D 2 6 7 C 2 2 -E B D 9- 4 5B 5- A7 5 1- B5BA463EC511

Tope genus: Laotia Saurin, 1953 .

Content: Laotia Saurin, 1953 ( Fig. 13C View Figure 13 ) and Messageria Bavay & Dautzenberg, 1904 ( Fig. 13D–F View Figure 13 ), containing three and two species, respectively.

Diagnosis: Inner tube missing, but a series of distinct inner sutural chambers situated below the suture; as the shell grows, old chambers are closed and new ones open, four or five open simultaneously; microtunnels long (start in umbilical area), two or three connected to a single sutural chamber.

Distribution: Northern Laos, Northern Vietnam, Southern China (Guangxi) ( Fig. 11 View Figure 11 ).