b BULLETIN 190, UNITED STATES NATIONAL MUSEUM 



KEY TO NORTH AMERICAN GENERA OF AEGERIIDAE 



1. Antenna dilated toward tip, ending in minute tuft 2 



Antenna tapering toward tip ; tip not tufted 25 



2. Hindwing with vein 3 nearer to 2 than to 4 Melittia Hiibner 



Hindwing with vein 3 nearer to 4 than to 2 3 



3. Forewing with vein 7 stalked to termen 4 



Forewing with vein 7 stalked to costa or apex 5 



4. Forewing with vein 9 out of stalk of 7 and 8 Cissuvora, new genus 



Forewing with vein 9 separate Aegeria Fabricius 



5. Forewing with veins 7 and 8 coincident Calasesia Beutenmiiller 



Forewing with veins 7 and 8 stalked 6 



6. Forewing with veins 4 and 5 connate Signaphora, nevv^ genus 



Forewing with veins 4 and 5 well separated, parallel 7 



7. Hindwing with veins 3 and 4 well separated 8 



Hindwing with veins 3 and 4 closely approximate, connate or stalked 9 



8. Hindwing with vein Ic broadly and heavily scaled Vitacea, new genus 



Hindwing with vein Ic normally scaled Paranthrene Hiibner 



9. Hindwing with veins 3 and 4 closely approximate, but separate. 



Albuna Hy. Edwards 

 Hindwing with veins 3 and 4 connate or stalked 10 



10. Tongue rudimentary 11 



Tongue well developed, spiraled 13 



\l: Face, head, and thorax long-haired Euhagena Hy. Edwards 



Face, head, and thorax normally scaled 12 



12. Forewing with veins 10 and 11 separate Gaea Beutenmiiller 



Forewing with veins 10 and 11 confluent at tip Penstemonia, new genus 



13. Posterior tibia and first tarsal joint very long Podosesia Moschler 



Posterior tibia and first tarsal joint of normal length 14 



14. Forewing with veins 10 and 11 coincident throughout 15 



Forewing with veins 10 and 11 separate, stalked or confluent at tip 17 



15. Posterior first tarsal joint heavily thickened above with rough scales. 



Alcathoe Hy. Edwards 

 Posterior first tarsal joint not thickened 16 



16. Posterior tibia rough scaled Hymenoclea, new genus 



Posterior tibia smooth with stiff hairs at spurs. 



Carmenta Hy. Edwards (in part) 



17. Forewing with veins 10 and 11 well separated, parallel 16 



Forewing with veins 10 and 11 closely approximate, stalked or confluent at tip 23 



18. Posterior first tarsal joint thickened with rougli scales above 19 



Posterior first tarsal joint not thickened, smooth 20 



19. Abdomen with long hair pencils, 5 in male, 2 in female Sannina Walker 



Abdomen without such hair pencils Synanthedon Hiibner 



20. Posterior tibia smooth or nearly so with stiff scales at spurs. 



Thamnosphecia Spuler 

 Posterior tibia rough scaled above 21 



21. Posterior tibia rough scaled throughout 22 



Posterior tibia rough scaled only on upper half Sanninoidea Beutenmiiller 



22. Labial palpus with second joint nearly smooth Conopia Hiibner 



Labial palpus with well-developed rough brush Vespamima Beutenmiiller 



23. Forewing with veins 10 and 1 1 stalked at base Sylvora, new genus 



Forewing with veins 10 and 1 1 confluent at tip , 24 



