NO. 1930. DESCRIPTIONS OF NEW SAWFLIES—ROHWER. 223 



TENTHREDO (LABIDIA) ANOMOCERUS. new species. 



Very distinct in the black scutellum and propodeum; seven- 

 jointed antennas, and other characters. 



Female. — Length 9 mm. Clypeus nearly impunctate, deeply, ar- 

 cuately emarginate, lobes broad, rounded apically; supraclypeal and 

 antennal foveae confluent; supraclypeal area convex; middle fovea 

 confluent with the well-defined ocellar basin; lateral walls of the 

 ocellar basin rounded; antennal furrows complete; postocellar furrow 

 obsolete; postocellar area defined laterally; postocellar line slightly 



Fig. 4.— Antenna of Tenthredo (Labidu) anomoceeus. 



shorter than the ocelloccipital ; antennae seven-jointed, the apical 

 two joints nearly consolidated; prescutum closely, sometimes con- 

 fluently, punctured; scutum more sparsely punctured, with two large, 

 nearly impunctate, areas ; scutellum with separate punctures; scutellar 

 lobe very coarsely sculptured; stigma rounded below, truncate api- 

 cally ; sheath broad, straight above, obliquely rounded below. Black; 

 clypeus, labrum, mandibles (apices piceous), narrow line on the 



Fig. 5.— Antenna of Tentheedo (Labidia) opimus. 



dorsal and ventral margins of pronotum, lateral spot on thi^ee basal 

 tergites, narrow apical margins of following tergites and sternites, 

 four anterior femora and tibiae (except a black line above) , four anterior 

 tarsi, apices of posterior femora, their tibiae (except apices), and tarsi 

 beneath yellow. Wings clear hyaline; venation brown, costa and 

 stigma yellowish. Pubescence black or blackish. 



Banff, Alberta, Canada. One female from Sanson, 

 s Type.— Cat. No. 14598, U.S.N.M. 



