I48 CONNECTICUT GEOL. AND NAT. HIST. SURVEY. [Bull. 



Tomostethus Konow. 

 Key to Species. 



1. Mesonotum and pleurae rufous 2 



Mesonotum and pleurae black; body black, with labrum, a 



fine line on collar, tegulae, front legs below middle of fem- 

 ora, and middle and hind legs beyond knees, white; saw- 

 guides concave above, and broadly convex below, obliquely 

 truucately rounded to a point at apex above; wings hya- 

 line. Length 6 mm , nortoni 



2. Front with large tranverse lateral foveae; body in female black, 



with prothorax, mesonotum, mesopleurae, scutellum, and meta- 

 notum, rufous ; wings infuscated ; saw-guides broadly obliquely 

 rounded at apex; male sometimes has the entire mesonotum 



black. Length 5-8 mm bardus 



Front not with large transverse lateral fovse; body black, 

 with prothorax, upper half of mesopleurae, lobes of meso- 

 notum, front legs below knees, and knees of middle and 

 hind pair, luteous or rufous; head with a depressed, rough- 

 ened, shield-shaped area below and including the median 

 ocellus; wings hyaline; saw-guides obliquely pointed to 

 apex above. Length 7 mm inhabilis 



T. nortonii MacGillivray. 



T. bardus (Say). Allantus bardus Say. Selandria bar da 

 Say. Monophadnus bardus Say. PI. i, Fig. 4. Howard, 

 Insect Book, PI. xii, Figs. 13 and 15. Larva feeds on ash. New- 

 Haven, 1904 (B. H. W.). 



T. inhabilis (Norton). Selandria inhabilis Harris. Blenno- 

 campa inhabilis Norton. Larva feeds on pear. New Haven, 15 

 May, 1905, Milldale, 21 May, 1906, Yalesville, 26 May, 1908 

 (B. H. W.) ; Watertown, 26 May, 191 1 (W. E. B.) ; Orange, 

 21 May, 1911 (A. B. C). 



Monophadnus Hartig. 

 Key to Species. 



1. Antennal furrow interrupted on middle of front 2 



Antennal furrow continuous and distinct from clypeus to 



occiput; body black, with labrum, teguke, and legs below 

 knees, white; scutellum coarsely punctate behind at sides; 

 scutellar appendage flat and impunctate; ocellar basin dis- 

 tinct. Length 7 mm distinctus 



2. Front with deep, broad lateral foveae, not connected with 



antennal foveae; body black, with tegulae, corners of pro- 



