THE SUGAR-CANE MOTH BORER. 



41 



practice is probably to blame for their scarcity during the following 

 spring and early summer. To avoid the destruction of these bene- 

 ficial parasites experiments have been conducted for the last five 

 years in conserving the cane trash. The trash may be raked to the 

 headlands or to waste land, or it may be plowed under. This sub- 

 ject is thoroughly discussed under the heading " Not burning cane 

 trash," page 55. 



MOTH-BORER ENEMIES IN FOREIGN COUNTRIES. 



The minute egg parasite Trichogramma minutum occurs almost 

 universally, having been recorded from Cuba, Porto Rico, Trinidad, 

 British Guiana, Barbados, and elsewhere, as noted below. Another 

 egg parasite, Telenomus sp., is recorded from British Guiana by 

 Bodkin (17), who also records a 

 braconid, a tachinid fly, 1 and a 

 large chalcidid, Heptasmicra cur- 

 vilineata Cameron. Two species of 

 ants are mentioned by Bodkin as 

 destroying the eggs. Predators in 

 British Guiana are an elaterid and 

 the histerid Lioderma quadriden- 

 tatum Fabricius. From the same 

 country Moore (104) lists Iphiau- 

 lax medianus Cameron, Iphiaulax 

 sp., Cremnops parvifasciatus Cam- 

 eron, and Cremnops sp. (allbraco- 

 nids) , and the ichneumonid Meso- 

 stenoideus sp. From Trinidad 

 Urich (164) records a sarcophagid 

 fly 2 (probably parasitic) and a hy- 

 men op teron, Cyanopterus sp. The tachinid EuzenUliopsis diatraeae 

 Townsend was found in Cuba by the junior author, as well as a species 

 of Apanteles. Tachmophyto sp. 1 is recorded by Van Dine (170) 

 from Porto Rico. Rosenfeld and Barber (137) record an intestinal 

 worm, the braconid Microdus sp., and a dipteron 2 from Argentina. 

 Van der Goot (58) states that in Java Diatraea is parasitized by Pha- 

 nurus oeneficiens Zehntner, Trichogramma minutum Riley, T. nanum 

 Zehntner, T. australicum Girault, in the egg stage, and by a braconid 

 and a tachinid 3 in the larva stage. He also records two species of ants 

 attacking the pupa? and the eggs, and a small carabid feeding on the 

 larva. DeCharmoy (51) notes Telenomus sp., (Ophion) Stauropodoc- 

 tonus mauritii Saussure, Trichogramma australicum Girault, Ophion 



Fig. 11. — Trichogramma minutum, an egg 

 parasite of the sugar-cane moth borer. 

 Highly magnified. (Riley.) 



1 These flies are thought by Dr. C 

 diatraeae. 



2 According to Dr. Townsend Rosenfeld and Barber's 

 " sarcophagid fly," are Oxysarcodexia peltata Aldrich. 



3 According to Dr. Townsend this is Diatraeophaga striatalis Townsend. 



H. T. Townsend to be probably his Euzenilliopsis 

 dipteron," and probably Urich's 



