Leichte Feldhaubitze 18/2 auf Fahrgestell PzKpfw II (SF) Wespe, SdKfz 124, "Wasp",
10.5 cm Le.F.H. 18/2 auf Fahrgestell Panzer II (sf) Wespe⁵,
10.5 cm L.F.H. 18/2 auf GW II, "Wespe", SdKfz 124⁶:

In the 2nd Panzer Division in 1943:

South of Berdichev (Ukraine) on January 31, 1944:

Sources:

1. The Encyclopedia of Tanks and Armored Fighting Vehicles - The Comprehensive Guide to Over 900 Armored Fighting Vehicles From 1915 to the Present Day, General Editor: Christopher F. Foss, 2002
2. Encyclopedia of German Tanks of World War Two, Peter Chamberlain and Hilary Doyle, 1999
3. The Encyclopedia of Weapons of World War II, Chris Bishop, 1998
4. Jane's World War II Tanks and Fighting Vehicles The Complete Guide, Leland Ness, 2002
5. German Tanks of World War II, Dr. S. Hart & Dr. R. Hart, 1998
6. Tank Data, Aberdeen Proving Grounds Series, 1968?