MolluscaBase source details
Webb, G. R. (1966). Haplotrema concavum vs. Deroceras gracile. The Nautilus. 79(4): 143.
467223
Webb, G. R.
1966
<i>Haplotrema concavum</i> vs. <i>Deroceras gracile</i>
The Nautilus
79(4): 143
Publication
Date
action
by
Deroceras gracilis (Rafinesque, 1820) accepted as Deroceras laeve (O. F. Müller, 1774) (basis of record)
Haplotrema concavum (Say, 1821) (additional source)
Haplotrema concavum (Say, 1821) (additional source)