1920] Dozier: Insects of Florida 373 



TABANIDiE. 



Chrysops vittatus var. floridanus Johnson. This fly is found in all 

 hammocks, but is more abundant in piney woods. It occurs commonly 

 from May to October, but is more abundant during the hot summer 

 months. 



As one walks into the shade of the woods, several of these flies will 

 circle round one's head, frequently making sudden dashes at their 

 victim. They are very persistent and annoying and their bite is painful. 



Chrysops atropus 0. S. A specimen taken flying around Crategus in 

 bloom, March S. 



Tabanus mexicanus Linn. The males of this tabanid are found in 

 plentiful numbers at chinquepin blooms, from April 30-June 1. Prof. 

 Watson took a specimen in flatwoods, September 4. 



Tabanus atratus Fab. This species is also found at chinquepin 

 bloom, but is not as common there as the above species. It often 

 attacks horses and cattle in the hammocks and is one of the most com- 

 mon forms here. 



HYMENOPTERA. 



TENTHREDINID^. 



Macrophya formosa Klug. A specimen taken at night on chinquepin 

 leaf, April 24. 



CYNIPIDiE. 



Amphibolips. This cynipid forms a small oak ball and is very 

 abundant over the hammocks. Large numbers were issuing June 25. 

 From one of these balls issued a huge niunber of small hymenopterous 

 parasites, Tetrastichiis sp. June 25. 



Callirhytis batatoides Ashm. More or less round swellings on 

 twigs. Large niunbers were collected fresh December 2. Most of the 

 adults issued January 25-31. 



Dis holcaspis ficigera Ashm. Large numbers of this gall were col- 

 lected on twigs of live oak, Q. virginiana, January 1. A number of adult 

 flies and parasites issued January 25-3 L 



Andricus virens Ashm. These galls were abundant on underside of 

 Q. virginiana leaves at edge of hammock, December 2. The adults 

 issued for the most part early in February. A single specimen of the 

 parasite, Eupelmus aurahis, issued March 1. 



ICHNEUMONID^. 



Exetastes Sp. A single specimen of this pretty blue hymenopteron 

 was taken on oak, June IL 



Campoplex gelechiae Ashm. This is a very efficient parasite of 

 Gelechia cercerisella Chamb. Issued in abundant numbers the latter 

 part of July from pupae. 



Mesostenus sp. A beautiful hymenopteron taken occasionally 

 in hammocks. May 15. 



