Collections Host 



Parasite Years yielding larvae^ 



Hymenoptera (Continued): specimens recovered parasite collected 



Pteromalidae 1 1 1 10 



Rogas sp 111 505 



Scambus hispae (Hair.) 3 2 2 700 



Spilochalcis side (Wlk.) 135 6 23 8,150 



Tetrastichus xanthops (Ratz.) 13 1 1 200 



T. sp 17 3 3 2,830] 



Coleophora pruniella Clem. cherry casebearer 



Food plant: Cherry. 



Occurrence: Arlington, Mass. 



Totals received: One collection of 70 larvae. 



Larvae: August to following June. 



Pupae: July. 



Adults: July. 



Parasites: None. 



FAMILY GRACILLARIIDAE 



Lithocolletis fragilella F. & B. 



Food plant: Honeysuckle. 

 Occurrence: Melrose, Mass. 

 Totals received: One collection of 40 larvae. 

 Larvae: Late in May to early in July (leaf miners) . 

 Pupae: July, and July to May. 

 Adults: July and May. 



Generations: Apparently a partial second generation, as moths 

 issued in July and a few in May of the next year. 

 Parasites: None. 



Lithocolletis cincinnatiella (Chamb.) 



gregarious oak leaf miner 



Food plant: White oak. 



Occurrence: Melrose, Mass. (in 1919), and Dover, Mass. (in 1933). 



Totals received: Two collections containing several infested leaves 



Larvae: May- July, and probably late summer. 



Pupae: July-August, and fall to spring. 



Adults: Late in July and August. Occasionally abundant locally. 



Parasites: 



Collections Hostlarvaef 



Parasite Years yielding and pupae 



Hymenoptera: specimens recovered parasite collected 



Horismenus violaceus (Ashm.) * 18 1 1 504 



Paraleurocerus bicoloripes Grit 16 1 1 504 



Sympiesis nigrifemora Ashm 111 504 



Zagrammosoma interlineatum Grit 2 11 504 



1 From 18 infested leaves, 404 parasitic hymenoptera emerged, of which the 

 above species are representatives, and from which 61 moths issued. Three in- 

 fested leaves examined July 26, 1933, contained the following: 45 living larvae, 

 22 parasitized larvae, and 16 pupae; an average of 28 larvae per leaf. 



Garcilaria syringella (F.) lilac leaf miner 



Food plant: Lilac. 



Occurrence: Melrose and Pittsfield, Mass. 



Totals received: Collections, 3; larvae, 75; years, 3. 



Larvae: June and July and August to October. 



Pupae: June-July, and September to May. 



Adults: May and July. 



Parasites: None. 



44 



