Measurements : 



Head Length 

 Head Width 

 Prothorax Width 

 Pterothorax Width 

 Abdomen Length 

 Abdomen Width 

 Total Length 



4 9 (Average) 



.43 

 .45 

 .35 

 .46 

 .71 

 .60 

 1.54 



KEY TO THE ISCHNOCERA OF NEW ENGLAND BIRDS 



Preantennal region furnished with one or more pair 



of inflated or strong setae 2 



Preantennal region without modified setae 3 



Two pair of anterior clypeal spines present; preantennal 



region with a median suture COLUMBICOLA 



One pair of anterior clypeal spines; preantennal 



region with a transverse suture ANATICOLA 



Anterior margin of head pincer-like ^ 



Anterior margin of head not pincer-like 5 



Anterior margin of head pincer-like with open 



or closed blades OENITHOBIUS 



Anterior margin of head pincer-like flanked 



by hyaline flaps INCIDIFRONS 



Lateral border of preantennal region with 4-6 



circular incras sat ions FALCOLIPEURUS 



Lateral border of preantennal region without 



such circular incrassations 6 



Preantennal region with a pair of posteriorly 



directed spine-like processes PHYSCONELLOIDES 



Preantennal region without a pair of posteriorly 



directed spine- like processes 7 



Head lacking hyaline margin and dorsal anterior 

 plate; antennae of ? filiform; at least one segment 



of d" antennae enlarged or with an appendage 8 



Head with dorsal anterior plate and hyaline margin 



present even if one or both may be inconspicuous 13 



Postantennal region greatly expanded; angular in 



shape -'-•^ 



Postantennal region only slightly expanded; 



slender body form 9 



65 



