. Bulletin of the Department of Agriculture. Agriculture; Agriculture. 36 BULLETIN 427, U, S. DEPAKTMENT OF AGRICULTURE. Finally a parasite pupa was noted in a leaf mine "witb. the remains of a tuber-moth larva. When the adult issued it proved to be Zagrammo- soma jiavolineatum. More experiments were carried on, using only material where the tuber-moth larvae occurred as leaf-miners and were less than half grown. The parasite was seen to oviposit in these larv93, and it was successfully reared through to the adult. This parasite thus far has not proved to be of much importance, and s
. Bulletin of the Department of Agriculture. Agriculture; Agriculture. 36 BULLETIN 427, U, S. DEPAKTMENT OF AGRICULTURE. Finally a parasite pupa was noted in a leaf mine "witb. the remains of a tuber-moth larva. When the adult issued it proved to be Zagrammo- soma jiavolineatum. More experiments were carried on, using only material where the tuber-moth larvae occurred as leaf-miners and were less than half grown. The parasite was seen to oviposit in these larv93, and it was successfully reared through to the adult. This parasite thus far has not proved to be of much importance, and seems unpromising, as the adult is so slow and deliberate in its movements that a tuber-moth larva in a large mine can move about and often escape the ovipositor of the parasite. The following record gives the length of its life cycle: 1915. August 17. August August 30. August 31. â Zagrammosoma Jiavolineatum ovipositing in tuber-moth larva. 1 Zagrammosoma Jiavolineatum adult issued. (Male.) 2 Zagrammosoma Jiavolineatum adults issued. (Males.) â¢1 Zagrammosoma Jiavolineatum adult issued. (Male.) September 1.â1 Zagrammosoma Jiavolineatum adult issued. (Female.) September 2.â2 Zagrammosoma Jiavolineatum adults issued. (Male and female.) Life cycle 13 days at average mean temperature of 75°F. SYMPIESIS STIGMATIPENNIS GIRAULT.^ During 1914 and 1915 tuber-moth material collected at Pasadena during late fall gave great numbers of a small parasite, the male of which (fig. 20) had Â¥\ <r â Â¥ r .<^ branched antennae. At about the same time an examination of mines on potato leaves often showed a parasitic larva (fig. 21) feeding extern- ally on a partially grown larva of the tuber moth. When these were reared they proved identi- cal with those issuing in the parasite cages. The parasite was reared with ease in the laboratory, and it oviposited readily in leaf-mining tuber-moth larvse when half grown or sHghtly smaller. The host is soon killed and within a short ti
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