AQUATIC INSECTS IN NEW YORK STATE 443 



From Leland Stanford jr Univei'sity cainpus 



8 Labium of larva. xl90 



From Las Vegas N. M. 



9 Antenna. xl90 

 10 Labium. xllO 



PLATE 3G 



Simulium pictipes 



1 Mandible of larva. xllO 



2 Maxilla of larva. xllO 



3 Labium of larva. xllO 



4 Hypopbarynx of larva. xllO 



5 Labrum of larva. xllO 



6 Cross section of hypopbarynx. xllO 



7 Wing of male. xl5 



8 Thoracic respiratory filaments of pupa. xl5 



PLATE 37 



Simulium venustum and varieties 



1 Maxilla of larva. xllO 



2 Hypopbarynx of larva, var. p i s c i c i d i u m . xllO 



3 Labrum of larva, venustum. xllO 



4 Respii'atory filaments of pupa. x40 



5 Labium of larva, var. p i s c i c i d i u m . xl90 



6 Labium of larva, venustum. xl90 



7 Respiratory filaments of pupa, var. p i s c i c i d i u m . xllO 



8 Wing of imago, var. a 



9 Caudal appendages (blood gills) of larva, var. a. xllO 



10 Hypopbarynx of larva, var. a. xllO 



11 Thoracic respiratory filaments of pupa, var. a. xllO 



12 Labrum of larva, var. a. xllO 



13 Mandible of lai-va, var. a. xllO 



14 Labium of larva, var. a. xl90 



PLATE 3S 



Legs. x50; clavFS. xl90 



1 S. venustum (var. p i s c i c i d i u m). Hind tarsus of male 



2 S. venustum (var. p i s c i c i d i u m). Middle tarsus of male 



3 S. venustum (var. p i s c i c i d i u m). Fore tarsus of male 



4 S. venustum (var. a) Fore tarsus of female 



5 S. venustum (var. a) Middle tarsus of female 



6 S. venustum (var. a) Hind metatarsus of male 



7 S. pecuarum. Hind metatarsus of female 



8 S. pictipes. Hind metatarsus of male 



9 S. vittatum. Hind metatarsus of female 



10 S. h i r t i p e s . Hind metatarsus of female 



11 S. hirtipes. Hind metatarsus of male 



12 S. m e r i d i o n a 1 e . Male and female metatarsus 



13 S. b r a c t e a t u m . Female metatarsus 



14 S. pecuarum. Claw of female 



15 S. b r a c t e a t u m . Claw of female 



16 S. m e r i d i o n a 1 e . Claw of female 



