SOME THYSANOPTERA OF MEXICO AND THE SOUTH 



115 



Abdomen elongate-ovate, bluntly pointed at tip, about one and four-fifths 

 times as long as broad; spines on last two segments (Fig. 51 C) moderately 

 long and stout; segments one to five distinctly beaded (Fig. 51 D) on posterior 

 dorsal margin, five less so than the others ; surface deeply deticulated. 



Measurements : Head, length .084 mm., width .096 mm. ; prothorax, 

 length .19 mm., width .21 mm.; pterothorax, width .24 mm.; abdomen, width 

 .23 mm.; total length .86 mm. Antennae: I .027 mm., II .025 mm.. Ill .023 

 mm., IV .022 mm., V .024 mm., VI .028 mm., VII .011 mm.. VIII .011 mm.; 

 total ,.17 mm. 



Described from one female. 



Food plant: Tobacco flowers (Nicotiana tabaciim). 



Locality: Guadalajara, Mexico. (Crawford.) 



Figure 51. Chirothrips mexicana 



