Jan., 'lO] ENTOMOLOGICAL NEWS. TI 



George V. Nash, head gardener of the Xc\v York Botanical 

 Gardens at Bronx Park, N. Y. Apparently the eg^s are de- 

 posited at the base of a spine, possibly near some recent 

 wound and the larvae commence operations upon the t; 

 their work being followed by decay and in some instances by 

 the operations of a small Ptinid beetle belonging to the genus 

 Catorauia. In the latter case the dead tissues are traversed 

 by irregular galleries, the Cecidomyiid larvae being in the near 

 ing vicinity of living cells. This species occurred in Xe\v York 

 in the leaves of Opimtia banburyana from Italy and an 

 Opnntia from British West Indies. It is probably American 

 and presumable that the infestation originated in this country. 

 The deep red male may be recognized by the short broad, tri- 

 angularly emarginate ventral plate. 



Larva. Length 3 mm., deep red, rather stout. Head small ; antennae 

 long, tapering, Inarticulate ; breast-bone stout, bidentate, the tei 

 divergent, broadly rounded, the shaft well chitinized. Skin coar 

 shagreened. Posterior extremity broadly rounded with submedian con- 

 ical processes. 



Male. Length I mm. Antennae about as long as the body, thick- 

 haired, dark brown; 14 segments, the fifth binodose, the basal portion 

 of the stem with a length three-quarters its- diameter, the distal p 

 with a length one-quarter greater than its diameter, the basal ml;; 

 ment subglobose, subbasal whorl sparse, the subapical circumtilum stout, 

 the loops moderately long, the distal enlargement subcylindric, tapering 

 basally with a length twice its diameter, the subapical whorl sp 

 the subbasal and subapical circumfili moderately stout, the loops mod 

 erately short; terminal segment with the basal stem very short, the 

 distal enlargement with a length three and a half times its diam. 

 Palpi; first segment short, stout, the second with a length three t lim- 

 its diameter, the third one-third longer, more slender, the fourth a 

 little longer and more slender than the third. Mesonotum dark i 

 dish brown, the submedian lines thickly haired. Seuti-llum yell 

 red basally, postscutcllum dark brown. Abdomen thickly haired, 

 red, dark brown basally, the membrane and pleurae Fuscous. \\ 

 hyaline, costa fuscous yellowish. Malteres pale 



tinted basally and apically. Coxae slaty brown, femora and tibiae 

 pale straw, slightly fuscous. Tarsi with the first segmenl pale 

 the second and third fuscous yellowish, the fourth and fifth dark 

 brown; claws slender, slightly curved, simple, the puhilli nrarls 

 as the claws. Genitalia; basal clasp segmenl stout; termin. 



