1985] 
Shaw & Edgerly — New braconid genus 
509 
Male: Unknown. 
Paratype data: 1 female, same data as holotype except collected 1 
Feb. 1984, ovipositing in web of embiid Clothoda urichi, [MCZ]; 1 
female, same data as holotype except reared from paralyzed embiid 
collected 1 Feb., adult wasp emerged 19 Feb. 1984, [MCZ]; 1 
female, Trinidad, Lalaja Rd., 23 June 1984, caught on silk of Clo- 
thoda urichi, (J. S. Edgerly), [USNM]. 
Remarks: S. arimaensis may be distinguished from S. evansi by 
its more coarsely sculptured propodeum and terga 1-2 (figs. 2-5). 
Host: Reared from an embiid, Clothoda urichi (Saussure). The 
morphology and biology of this species is discussed by Ross (1944) 
and Callan( 1952). 
Life history: Clothoda urichi (Saussure), an abundant species in 
Trinidad, spins silk on vertical objects, generally trees, that support 
the growth of algae, the food of this embiid. They construct con- 
spicuous silken webs beneath which they live in groups, ranging 
from one mother with her offspring to 25 or more females with their 
young. On February 1, 1984 at the Simla Research Station in the 
Arima Valley, a braconid wasp was observed to penetrate embiid 
silk with her ovipositor. A paralyzed adult female embiid was found 
directly beneath the silk under the wasp. She was collected and 
placed in a petri dish in the laboratory. The female remained para- 
lyzed until February 8 when the endoparasitic wasp larva killed the 
embiid and emerged to spin a white silken cocoon (.6 cm), within 
which it pupated. The adult wasp emerged from the cocoon on 
February 19. 
Distribution: Trinidad. 
Etymology: The name refers to the Arima valley of Trinidad, the 
type-locality. 
Sericobracon evansi, new species 
(Figs. 3, 5) 
Holotype. Female, Virgin Islands: St. Croix, E. side of Blue Mt., 
14 Feb. 1967, (H. E. Evans). [MCZ] 
Description of holotype female: Body length 2.5 mm; flagellum 
18-segmented; malar space slightly less than 1/3 eye height; scutellar 
furrow 6-foveate; apical area of propodeum mostly smooth (Fig. 3); 
length of tergum 1 equal to width at apex, smooth basomedially 
(Fig. 5); tergum 2 smooth; ovipositor length 0.6X metasoma length. 
