Insect parasitism the alder woodwasp and its enemies /
Insect parasitism the alder woodwasp and its enemies / [motion picture] :
producers: G. H. Thompson, E. R. Skinner
- 1 film reel (18 min.) : sd., col. ; 16 mm.
- Biology series .
Also issued in b&w Contrasts the life cycle of the alder woodwasp with the life cycles of its four parasites. Shows how the woodwasp larva is eaten & killed by enemy parasites. Points out how each of these parasites gains access to the woodwasp tunnel.
Parasitism,
Also issued in b&w Contrasts the life cycle of the alder woodwasp with the life cycles of its four parasites. Shows how the woodwasp larva is eaten & killed by enemy parasites. Points out how each of these parasites gains access to the woodwasp tunnel.
Parasitism,