CHAPTER XXII 



TRIBE PARLATOBIINI 



The Fringe Scales 



The body of the adult female is usually longer than broad with the 

 cephalic and caudal ends bluntly rounded and with the sides parallel 

 or subparallel or as broad or broader than long with the body triangu- 

 lar in outline and the caudal portion with converging lateral margins 

 and bluntly pointed caudal end. The lateral margins of the segments 

 of the preabdomen are provided with bracteae either in the adult female 

 or the second nymphal female. Lobes are present in the adult female 

 or second nymphal female. There are usually three pairs, rarely four 

 pairs, sometimes with the fourth and fifth pairs rudimentary, and 

 sometimes with only two pairs, if wanting, present in the second 

 nymphal stage. Distapectinae are present in either adult female or 

 second nymphal female, rarely reduced until they approximate furca- 

 pectinae in form, sometimes wanting in ad;ult female and second 

 nymphal female. Plates are rarely present. Incisurae are broad and 

 shallow, usually completely filled by pectinae, median incisura rarely with- 

 out pectinae. Densariae or paraphyses are never present. Altacera- 

 tubae are present and are usually very large. Brevaceratubae may be 

 numerous, few in number, or wanting, but are never arranged in trans- 

 verse rows. Genacerores are present or wanting, when present, repre- 

 sented by four or five groups, the mesogenacerores are generally want- 

 ing and, if present, rarely with more than eight cerores. Scale of adult 

 female variable in form, round or almost round with exuviae small 

 and peripheral, subquadrangular with the exuviae large and covering 

 most of surface, or two or three times as long as wide with exuviae 

 at one end. Exuviae usually two in number, female sometimes trans- 

 forms in a puparium, in such cases with only a single exuvia. Scale 

 of male is usually elongate, twice as long as wide, with the exuvia at 

 one end, rarely subcircular with the exuvia subcentral. 



The genera of Parlatoriini fall into two groups, those which 

 are normal in their development and those in which the adult 

 female is enclosed in a puparium. This latter group includes a 

 single genus, Gymnaspis. The pygidium in the species of this 

 genus is greatly modified in the adult female. In some there is 

 no indication of lobes, pectinae, or incisurae, but the typical 

 pygidial structures are found in the second stage of the female 

 nymph. 



The scale of the adult female varies considerable in form. 



245 



