Ombrastacoides leptomerus (1st)

March 5, 2015RobertFeatured, News
Ombrastacoides leptomerus, Female, 23.5 mm OCL

Ombrastacoides leptomerus, Female, 23.5 mm OCL

Being unfamiliar with Tasmanian crayfish I was delighted at finding this Ombrastacoides crayfish in a small swampy drain on the side of a bush track. I consulted Hanson and Richardson 2006 and it seems to be Ombrastacoides leptomerus, if anyone has other ideas, please let me know as this is my first Ombrastacoides spp.

Ombrastacoides leptomerus burrows

Ombrastacoides leptomerus burrows

Ombrastacoides leptomerus burrows through the spagnum moss

Ombrastacoides leptomerus burrows through the spagnum moss

This is a burrowing species with 3 surface entrance through about 200 mm of sphagnum moss into a gravelly clay below. The surface was dry but water was just below the surface with all burrows flooded.

Ombrastacoides leptomerus

Ombrastacoides leptomerus

Ombrastacoides leptomerus

Ombrastacoides leptomerus

We dug this one from its burrow some 450 mm below the surface.

Ombrastacoides leptomerus

Ombrastacoides leptomerus

 

References

Hansen, B and Richardson, AMM (2006) A revision of the Tasmanian endemic freshwater crayfish genus Parastacoides (Crustacea: Decapoda: Parastacidae). Invertebrate Systematics, 20 (6). pp. 713-769.

ACP Data Base 2015.  ACP5502, Ombrastacoides leptomerus, female, 23.50 mm OCL, TAS, Australia, Drain along side road off Lyell Hwy, tributary Tully River (start of catchment), Tully-Henty Rv, S42.155950, E145.445660, 277 m, 20-Feb-2015, RB & SM McCormack, Roadside drain, deep spagnum moss (200 mm), reeds, clay/gravel base, dig.

 

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