36 EDWARD NORTON. 



GENERIC SYNOPSIS. 



Family TENTHREDINID.E. 



Subfamily 1. CIMBICIDES.— Antennae 5-8 articulate, short, clavate. 



A. Wings with tioo marginal and three submarginal cells. 



a. First submarginal cell with two recurrent nervures. 

 Lanceolate cell with straight cross line. 



1. Antennae 7-articulate 1, Cimbex. 



2. " 8 " 2. Trichiosoma. 



3. " 5 " a, Clavellaria. 



Lanceolate cell closed in middle. 



4. Antennae 6-articulate 4, Zarea. 



5. " 7 " 5, Abia. 



6. " 5 " 7, Plagiocera. 



b. First and second submarginal cells each with one recurrent nervure. 



7. Antennae 5-articulate 6, Amasis- 



c. Second submarginal cell with two recurrent nervures. 



8. Antennae 5-articulate 8, Pachylosticta. 



B. Wings with one marginal cell. 

 Three submarginal cells. 



d. First and second submarginals each with one recurrent nervure. 



1. Antennae (5-articulate 9, Thulea. 



2. " 6 " not clavate 10, Acordulecera. 



Four submarginal cells. 



e. Second and third submarginals each with one recurrent nervure. 



1. Antennae fi-articulate 11, Sizygonia. 



2. " 6 " marginal cell appendicu- 



late 12, Perga. 



3. " 7 " marginal cell appendicu- 



late 13, Cephalocera. 



Subfamily 2. HYLOTOMIDES.— Antennae 3-4 articulate, third long and often 

 furcate in the males. 



C. Wings with two marginal and three submarginal cells. 



a. First and second submarginals each with a recurrent nervure. 



1. Antennae 4-articulate 14, Blasticotoma. 



£>. Wings with one marginal, not appendiculate cell. 

 Four submarginal cells. 



a. Second and third submarginals each with a recurrent nervure. 



1. Antennae of male furcate; of female slender, 



filiform 15, Sericocera. 



2. Antennae of male furcate; of female somewhat 



clavate 16, Schizocerus. 



3. Antennae of male simple; of female somewhat 



clavate 17, Atomacera. 



b. Second and intersection of second and third submar- 



ginals each with a recurrent nervure 18, Scobina. 



Three submarginal cells. 



c. First submarginal receiving two recurrent uervures..lil, Themos. 



