1976] 
Callan — Gorytine Wasps in Trinidad 
329 
The membracid, held tightly below its body by the wasp, was 
rather small, and I was not successful in observing prey carriage 
closely, but the middle legs were almost certainly used to hold 
the prey. The nest was unfortunately not located. E. bicolor is 
a brownish, gregarious treehopper, 4 mm long, found on mango 
( Mangifera indica L.) in Trinidad, where aggregations of adults 
and nymphs have been noticed feeding and causing character- 
istic lesions on inflorescences. 
Finally, 1 reported (Callan, 1954) as Gorytes sp., a female which 
was almost certainly H. iridipennis, taken on 7 April 1944 at 
Cristobal Colon, Estado Sucre, Venezuela. 
H. iridipennis clearly preys on Membracidae like many other 
members of the genus. The 3 species of adult treehoppers recorded 
as prey were distinctly smaller than the wasp and several indi- 
viduals are undoubtedly stored in each cell, how many is uncer- 
tain as only one nest was excavated. Two species, Horiola picta 
and Erechtia bicolor are gregarious, and their colonies are in- 
variably attended by ants, mainly Azteca, Dolichoderus and 
Wasmannia, which exploit them for their honeydew. The ants 
evidently deter neither the gorytine wasps from capturing their 
prey nor the mymarid and trichogrammatid parasites, which 
commonly attack the eggs of these treehoppers. 
Eloplisoides denticulatus (Packard) 
This species is characterized by short thickened antennae and 
was originally described from Louisiana. It ranges widely through 
the United States and into Mexico. Krombein (1959) captured 
a female 7.5 mm long on 30 July 1958 in North Carolina with a 
deltocephaline nymph 5.5 mm long probably in the 5th instar 
(Cicadellidae). 
I took a female in Trinidad at St. Augustine on 1 February 
1948, which considerably extends the known distribution of the 
species. It was not found nesting and nothing is known of its 
prey in Trinidad. 
Sagenista brasiliensis (Shuckard) 
This is a black wasp about 10 mm in length with basally infus- 
cate wings. Originally described as a Gorytes, it was transferred 
by Bohart (1967) to a new genus Sagenista, closely related to 
