Diagnostic featuresFluviopupa gracilis
is separated from F. ramsayi
in having an elongate
and the distal
end of the penis
is longer (not shorter) than the accessory lobe
. In F. gracilis colmani
is weakly pigmented and the head
-foot unpigmented. The ovate
has 3.5 to 4 whorls and tends to be smaller and narrower, with less pronounced sutures than in F. gracilis gracilis
. The operculum
either lacks or has a minute white spot on the inner side.
Fluviopupa gracilis colmani Ponder, 1982
Genus Fluviopupa Pilsbry, 1911
Original name: Fluviopupa gracilis colmani Ponder, 1982. Ponder, W.F.(1982) Hydrobiidae of Lord Howe Island (Mollusca: Gastropoda: Prosobranchia). Australian Journal of Marine and Freshwater Research 33: 89-159.
Type locality: Stream behind Golf Course( to SSE of club building and just over fence in reserve). Snails in small pools in sandstone -clay, on undersides of stones and leaves.
Biology and ecology
In pools in small creeks and on moss and bare rock surfaces of seepages.
Lord Howe Island. On western slopes of North Hummock, Intermediate Hill and Smoking Tree Ridge.
The Lord Howe Island Fluviopupa species are rather similar in appearance but the different taxa are in distinct geographical locations on Lord Howe Island.
Ponder, W. F. (1982). Hydrobiidae of Lord Howe Island (Mollusca: Gastropoda: Prosobranchia). Australian Journal of Marine and Freshwater Research 33: 89-159.