90 INSECTS NOXIOUS TO AGRICULTURE. 



SUBDIVISION IV. 



Adult females active or stationary ; naked, 

 or covered with mealy, waxy, or cottony 

 secretion ; antennae of ten or eleven joints ; 

 anterior pair of feet similar to the rest; 

 anogenital ring without hairs ; anal tubercles 

 inconspicuous. Males with facetted eyes and 

 no ocelli MoNOPHLEBID^E. 



Adult females with elongated antennae of 

 eleven joints ; covered with mealy or cottony 

 secretion; with or without ovisac; rostrum 

 present ICERYA. 



Adult females with antennae of eleven 

 joints ; naked, or covered with cottony or 

 mealy secretion ; rostrum absent CCELOSTOMA. 



Genera not yet represented in New Zealand. 



Adult females having antennae of eleven 

 joints ; naked. Males with several long pro- 

 cesses, or tassels, on the abdominal segments MONOPHLEBUS. 



Adult females with antennae of eleven 

 joints; naked. Males without tassels LEACHIA. 



Adult females with conical antennae of 

 eleven joints ; covered with cotton ORTONIA. 



Adult females with antennae of ten joints. 

 Males bearing a long mass of silky hairs on 

 the last abdominal segment CALLIPAPPUS. 



Adult females with antennae of ten joints ; 

 covered with secretion, partly cottony, partly 

 plates of wax WALKERIANA. 



The genera Drosicha, Walker (list of Homop. Suppl., 1858, 

 306, 1) and Guerinia, Targioni-Tozzetti (Sigiioret, loc. cit., 1875, 

 p. 356) are here united to Monophlebus. 



The genus Llaveia, Signoret (loc. cit., 1875, p. 370), is 

 omitted, its affinities being doubtful. 



SUBDIVISION Y. 

 Not yet represented in New Zealand. 



Adult females with antennae of variable 

 number of joints ; anterior pair of feet abnor- 



