NO. 3533 CHALCID WASPS OF GENUS EURYTOMA BUGBEE 455 



Antenna short and stocky; scape yellow; flagellum including 

 pedicel averages 1.0 mm. in length; first segment longer than wide; 

 two to five becoming progressively shorter until four and five are 

 approximately square; segments not moniliform but sharply truncate 

 at distal ends; slightly swollen terminal unit composed of thi'ee 

 closely fused segments; legs with the coxae black; dark brown to 

 black on all femora; knees yellow; foretibiae may be yellowish brown 

 or show dark-brown infuscation medially; dark brown to black in- 

 fuscation on mid- and hindtibiae medially; forecoxae with a pro- 

 nounced, semicircular, horizontal, carinated ridge about middle of 

 anterior face in contrast to the usual shallow, rounded oblique depres- 

 sion characteristic of most species of the genus. Wing veins light 

 yellow and thin; marginal vein averages .35 mm. in length (.30-.37) 

 and postmarginal .24 mm. (.22-.25). 



Male: Average length 3.3 mm. (3.2-3.4). Scape of antenna 

 black; first 4 segments of flagellum, pedicellate distally, dorsally 

 raised, and center slightly constricted; fifth segment not pedicellate 

 distally but separated from terminal segments by a deep annulation; 

 pointed terminal unit composed of two closely fused segments. Legs 

 with black to dark brown on all femora and tibiae; knees yellowish 

 brown. Marginal and postmarginal veins linear; marginal averages 

 .33 mm. (.30-.35) in length and shorter postmarginal .23 mm. (.20- 

 .27). 



Types: Holotype female in the U.S. National Museum, no. 25506, 

 Washington, D.C. 



Type locality: Holotype locality, Jacksonville, Fla., bred April 1885. 



Hosts: Specimens were bred from Iva ciliata, Ambrosia trifida, 

 and Solanum rostratum stems. No insect host species stated. Holo- 

 tj^e female from gall of Dryorhizoxenusfloridanus Ashmead (Ashmead, 

 1886). 



Distribution: Known so far only from central and southern Texas 

 and Jacksonville, Fla. 



Remarks: The redescription was based on the holotype female 

 and the specimens listed above. The prominent raised almost hori- 

 zontal carinated ridge on the forecoxae, the elongate petiole, the 

 wide and shallow propodeum with the surface finely punctate, and 

 the very long sixth abdominal segment make this species easily 

 recognizable. 



The host of this species was not given for any of the specimens 

 in the series listed above. However, parasites determined as Eury- 

 toma tylodermatis are recorded from weevil larvae {Trichobans texana) 

 in the stems of Solanum rostratum (Pierce 190Sa, and Pierce, Cushman, 

 and Hood, 1912), (Lixus scrobicollis) in Ambrosia trifida (ibid, and 

 Pierce 1908b), and {Trichobaris trinotata) from stems of Solanum 



