Leptotarsus albistigma is a species of crane fly native to New Zealand.

Edwards described the species as follows: Differs from M. viridis as follows: Middle praescutal stripe obsolete, lateral pair conspicuously darker.

Abdomen duller, more ochreous, tip not darkened, with rather broad lateral bands of grey dusting on all tergites except first.

[1] It is commonly found in the South Island, on damp logs of exotic tree species,[7] including rotting Pinus radiata and willow trees.

[8] The larvae of Leptotarsus albistigma bores through wood that has been softened by fungi.