ICHNEUMON-FLIES OF AMERICA: 1. METOPIINAE 11 



This species ranges from the Atlantic to Texas, in the Transition and 

 Upper Austral zones. Most of the specimens were collected in spring. 



2. Genus Acerataspis 



Figure 164,b 



Cerataspis Uchida, 1934, Trans. Sapporo Nat. Hist. Soc, vol. 13, p. 275; name 

 preoccupied by Gray, 1828. Type: Cerataspis clavata Uchida; original 

 designation. 



Acerataspis Uchida, 1934, Ins. Matsumurana, vol. 9, p. 23; new name for Cera- 

 taspis. 



Front wing 7 to 9 mm. long; punctation rather strong; face and 

 clypeus evenly, moderately convex; face continued dorsally as a nar- 

 row, high triangular process extending 0.7 the distance to median 

 ocellus, the process a thin lamella subdorsally, expanded a little on its 

 dorsal edge and its dorsal edge with a deep groove; temple very short, 

 mostly flat; occipital carina complete; cheek about 0.4 as long as basal 

 width of mandible; mandible moderately narrow, unspecialized, its 

 upper tooth a little larger than lower tooth; flagellum long and slender; 

 upper margin of pronotum rather obliquely thickened and a little flat- 

 tened submarginally ; propleurum moderately convex; scutellum short, 

 transverse, prolonged lateroapically as a tooth, its lateral carina 

 running to the apex; areolet large; nervulus opposite basal vein or a 

 little beyond it; nervellus broken near its lower 0.4; prepectal carina 

 as in the figure; sternaulus a broad impression; metapleurum com- 

 pletely covered with fine setiferous punctures; propodeal carinae as in 

 the figure; propodeal spiracle short oval; suture between second tro 

 chanter and femur of front and middle legs faintly indicated on lower 

 side; middle tibia with a single slender spur in male, with two slender 

 spurs in female, the front spur of female middle tibia about 1.1 as long 

 as hind spur; hind tibia with two spurs; all tarsal claws with long 

 pectination; abdomen strongly convex, clavate, its apex rounded with 

 the sixth tergite rounded and turned under; first tergite moderately 

 short, its spiracle near its basal 0.25, its lateral carina absent or weakly 

 indicated; first three tergites with a pair of median longitudinal carinae 

 from base to apex; epipleura vestigial, narrow and thick; seventh and 

 following segments retracted; sixth sternite of female a transverse, 

 unspecialized plate. 



This genus contains a small number of species in the Oriental region. 

 Metopius fusiformis Morley 1913, should be referred to this genus 

 (new combination). We have specimens from Java and the Moluccas 

 which agree exactly with Morley's type, and an undescribed subspecies 

 of A. fusiformis from the Philippines. 



