MAY FLIES AND MIDGES OF NEW YORK 325 



5 Caudal end of larva. x25 

 fi Caudal end of pupa. x25 



7 Dorsal aspect of abdominal segments of pupa. x25 



Tanytarsus exiguus 



8 Larva. x20 



9 Fibrous case of larva and pupa. xG 



11 Dorsal aspect of second abdominal segment of pupa. xlOO 



12 Ventral aspect of mouth parts of larva: I, labium; md, mandible; 



mx, maxilla ; p, palpus. x400 



13 Antenna of larva. x250 



14 Latero-ventral aspect of head of larva : a, antenna ; md. mandible ; 



mx, maxilla : 1, labium 



15 Caudal end of pupa (male). xlOO 



PLATE 27 



1 P r cl a d i u s p u s i 11 u s 



2 Pro(?ladius caliginosus 



3 Procladius pinguis 



4 Procladius scapularis 



5 Ablabesmyia carnea var. c. 



6 Ablabesmyia monilig 

 TTanypusstellatus 



8 Ablabesmyia venusta 

 9Ablabesmyiadyari 



10 Ablabesmyia melanops 



11 Ablabesmyia flavifrons 



12 Ablabesmyia indecisa 



13 Ablabesmyia i n d eci s a (after Williston) 



14 Ablabesmyia pallens, var. a. 



15 T a n y p u s c u 1 i c i f o r m i s 



16 Chasmatonotus bimaculatus 



PLATE 28 



1 Chironomus brachialis 



2 Chironomus scalaenus 



3 Chironomus spilopterus (after Williston ) 



4 Chironomus taeniapennis 

 5Chironomuscaliginosus 



6 Chironomus flavicingula 



7 Chironomus halteralis 



8 Chironomus fallax 



9 Chironomus riparius 



10 Chironomus barbipes 



11 Chironomus annularis 



12 Chironomus a 1 b i m a n u s ( male) 



13 Chironomus a 1 b i m a n u s ( female) 



14 Chironomus devinctus 



15 Chironomus nigricans 

 10 Chironomus p e d e 1 1 u s 



17 Chironomus a b e r r a n s 



