14 PROCEEDINGS OF THE NATIONAL MUSEUM TOL. 75 



TRICHOSTICTIA, new genus 



Figures 11, 12 



Monedula Handlibscii and Autuobs (part). 



Genotype. — Monedula vulpiria Handlirsch. 



Wasps belonging to this genus have the eyes hairy. Of all the 

 wasps formerly included in the genus Monedula none save those 

 assigned to this genus possess this character. In addition to this 

 they are also distinguished by the shape of the dorsal border of the 

 clypeus, which on the medial line is produced upward to a point 

 above tlie level of the lower border of the insertion of the antennae 



(fig. 11). 



Head scarcely as wide as the thorax; vertex at midline slightly 

 below the level of the top of the eyes ; eyes hairy, their inner margins 

 straight but divergent at the clypeus ; anterior ocellus with lens pres- 

 ent, in form somewhat elliptical, transversely placed, and situated 

 on a distinct, rounded elevation; mandibles dentate; clypeus moder- 

 ately arched, carinate on midline dorsally, median ventral area 

 slightly flattened, and dorsal margin at midline produced upward 

 between the antennae to a point above the level of the lower margin 

 of their insertion ; maxillary palpus composed of six segments, labial 

 of four; propodeum narrower than the thorax, its posterior lateral 

 angles less prominent than in allied genera; middle coxa of male 

 with prominent, posterior, curved tooth; second and sixth sternites 

 of male plain ; eighth sternite of male ends in a single, curved spine ; 

 seventh tergite of male bears lateral spines and the apex of the 

 median part is rounded, not emarginate ; spatha of male genitalia as 

 in Figure 70. 



KEY TO SPECIES OV TEICHOSTICTIA 



1. Males (visible segments in abdomen 7; antenna composed of 13 segments) 2. 



Females (visible segments in abdomen 6; antenna composed of 12 



segments) 4. 



2. Scape above wholly ferruginous; discal spots on tergites 4r-6 usually (not 



always) united on midline guttata. 



Scape black above ; discal spots on tergites 4-6 always separated on mid- 

 line 3. 



3. Black on flagellum present to a greater or less degree on all segments ; pubes- 



cence on thorax and propodeum white vulpina. 



Black on flagellum limited to apical half; pubescence on thorax and propo- 

 deum decidedly brownish brunneri. 



4. Scape above wholly ferruginous ; scutellum bearing a complete fascia-guttata. 

 Scape black above ; scutellum bearing only lateral spots 5. 



5. Black on flagellum present in greater or less degree on all segments ; pu- 



bescence on dorsum of propodeum white vulpina. 



Black on flagellum limited to apical half: pubescence on dorsum of pro- 

 podeum long and decidedly brown brunneri. 



