NEOTROPICAL MALLOPHAGA CARRIKER 



421 



The proanteniiary margin straight; hyahne border of anterior plate 

 wider than usual and with much more than half of the plate extending 

 beyond the tips of the premarginal carinae (usually half or less); 

 this plate is longer than wide, with deepl}'^ incised, wide frons, and 



Figure 4. — a-d, Head, thorax, and certain abdominal segments: a, Formkaphagus huilae, 

 female (segments I-III); b, F. latifroyis, female (segments I, II); c, F. dypeatus, male 

 (segments I, II); d, F. bolivianus, female (segment I). f,f, Male genitalia: f, F. piciura- 

 tus; f, F. minutus. 



