AQUATIC INSECTS IN NEW YORK STATE 489 



PLATE IS 



Zygoptera 

 Photos from alcoholic specimens by Lee C. Stiles 

 1 and 2 Amphiasi'ion saucium Burm. male and female 

 3 and 4Nehallennia irene Hagen, male and female 

 . 5 and GAnomalagrion hastatum Say, male and female 



7 Nymph of A. s a n c i u m 



8 Wing of Lestes rectangular is Say 



PLATE 19 



Enallagma 



Male abdominal appendages of New York species 



« E. a n n e X u m . & B. h a g e n i . c E. g e m i n a t u m . d E. 

 p i s c i n a r i u m . e E. d i v a g a n s . f E. e x s u 1 a n s . g E. 

 e b r i u m . /; E. c a r u n c n 1 a t u m . i E. civile. ; E. a s p e r - 

 sum. A- E. t r a V i a t u m . Z E. a n t e n n a t u m . m E. s i g n a - 

 turn. »t E. p o 11 u t u m . 



List of abbreviations for plates 20-31 



a Cocoons from which adults have emerged 



ol Alimentary canal 



as Anterior sclerite 



est Anterior sternal setae 



at Anterior tergal setae 



hli Breathing holes 



c Cuticle 



ccp Cavity surrounding the cuticular pocket 



cp Cuticular pocket 



cs Caudal spine 



CSS Holes made by the caudal spines 



d Dorsum 



da Dorsal apodeme 



4g Dorsal cavity 



ds Distal setae of the labrum 



€ Holes eaten in the stems by larvae 



ec Empty cavities 



ex Location supposed opening in the paired doisal cavities 



/( Hypodermis 



hep Hypodermis of the cuticular pocket 



is Infraspiracular setae 



I Lamellae 



7fir Leg 



]n liUmen 



/;• Lumen respiratory system 



Is Lateral setae 



^n Muscle 



md Median setae of the labrum 



mg Marginal setae of the labrum 



ms Mesothorax 



mt Metathorax 



o Cocoons 



