THE CANADIAN ENTOMOLOGIST. 145 



NOTES ON TENTHREDINOIDEA, WITH DESCRIPTIONS OF 



NEW SPECIES. 



BY S. A. ROHWER, BOULDER, COLO. 



Paper V. 



(New Western Species.) * 



Erythraspides Tuckeri, n. sp. — Female : Length, 5 mm. Habitus 

 normal for members of this genus. Anterior margin of the clypeus dullish 

 by irregular patches of punctures. Middle fovea well defined, rounded 

 above, open below. Ocellar basin not well defined, represented by two 

 channels meeting above the anterior ocellus. Lateral furrows reduced to 

 two distinct rounded fovea. Third antennal joint as long as four plus five. 

 Mesothorax shining, the anterior part of the anterior lobe of the rnesonotum 

 with some close punctures. Scutellum more or less punctured, the sides 

 smooth and shining. Claws with a distinct inner tooth almost bifid. 

 Stigma very large, broadest at the base, tapering to an acute apex. 

 Sheath large, straight above, rounded below. Colour black ; tegulse, tips 

 of the femora (the four anterior ones more broadly so), tibiae except the 

 apices white. Tarsi dusky. Sparsely clothed with white pubescence. 

 Wings hyaline ; venation brown. 



Type locality : Lawrence, Kansas. One specimen collected by Mr. 

 E. S. Tucker in April. 



This species differs from Ashmeadi, Kincaid (Alaska), in not having 

 the scutellum granular, the stigma is angled at the base below, etc. It has 

 some general resemblance to Blennocampa adusa, Macg., but the posterior 

 femora are black. 



Tenthredo sectiliformis, n. sp. — Female : Length, 9 mm. Clypeus 

 semicircularly emarginate, the lobes broad, rounded. Occiput with a 

 weak but distinct margin ; lateral ocellar furrows strong ; frons strong ; 

 interocellar furrow well defined. Antennal joint three longer than four, 

 but not quite as long as four plus five ; joints three to seven spined 

 at the tip beneath ; apical joint about the same length as the preceding 

 one. Head shining, not strongly sculptured. Dorsulum opaque, rather 

 closely granular ; scutellum granular, as is also the postscutellum ; post- 

 scutellum with a middle carina. Claws deeply cleft, the inner tooth the 

 shorter. Stigma not strongly beneath j venation normal. Sheath broad, 

 straight above, rounded beneath, with an apical fringe of hair. Colour 

 black ; most of the clypeus, labrum and mandibles (except the tips), and 



May, 1909 



