1914] Rohwer—Descriptions of Two New Genera of Parasitic Hymenoptera 81 
and two males recorded under Bureau of Entomology No. Hopk. 
U.S. 11245 x, which refers to a note stating that this species is a 
primary parasite of Ectedemia phlaophaga Busck. Material col- 
lected by T. E. Snyder and reared September, 1913, by Carl Hein- 
rich. 
Type: Cat. No. 18051, U. S. National Museum. 
Centistidea gen. nov. 
Related to Anomopterus but may be separated from that genus 
by the embossed area on the first tergite, by having the second dis- 
coidal cell more widely opened and by having 14-jointed antenne. 
Head as in Anomopterus; scape cylindrical, subequal in length 
with the pedicellum; body shining with distinct separate punc- 
tures; venation as in Fig. 2; legs not robust; first tergite with an 
elongate embossed area basally. 
Type: The following new species. 
Centistidea ectcedemiz sp. nov. 
Female: Length, 1.75 mm. Head subopaque, with separate, rather poorly 
defined punctures; third antennal joint distinctly longer than the fourth; posto- 
cellar line a little more than half as long as the ocellocular line; mesoscutum shining 
with separate distinct punctures; scutellum more sparsely punctured; metanotum 
shining, practically impunctate; propodeum shining with sparse separate punctures, 
laterally with two well defined carinze, medi- 
anly with faint, poorly defined carine, no carinee 
separating the dorsal and posterior aspects; the 
lateral posterior aspect with four or five strong 
rugze; mesepisternum and sides of the propo- 
deum shining impunctate; embossed area of 
the first tergite slightly wider basally. Black; 
mandibles pale  ferruginous; scape and 
pedicellum piceous; tegule and first tergite 
fulvous; legs except the posterior tarsi fulvous; 
wings hyaline, iridescent, venation pale brown, Lipsey, 
stigma black. Centistidea ectoedemie 
Male: Length, 1.45 mm. Agrees well with Se DEUS: 
the above description of the female. 
Ballston (Veitch), Virginia. Described from one female (type) 
and one male recorded under Bureau of Entomology No. Hopk. 
U. 5. 11236a, which refers to a note stating that this species is a 
primary parasite on Ectedemia castaneew Busck, the material col- 
lected and reared by T. E. Snyder, adults issuing April 23 and 
24, 1913. 
Type: Cat. No. 18052, U.S. National Museum. 
