154 INSECTS AFFECTING THE ORANGE. 



THE SULPHUJl-COLORED TOBTRICID. 



{Dichelia [Tortrix] snlphureana, Clem.) 



The caterpillars of this widelj -distributed Leaf-roller are very general 

 feeders. In the northern States they are frequently injurious to Clover; 

 in the South the long list of their l()(i(l-i)lants includes Cotton, Straw- 

 berry, Grape, and Orange; ui)on the latter they are somewhat rarely 

 found, and it is probable lliat tlie thick leaves of the citrus family are 

 not well adajited to the needs of this species. The caterpillar bears a 

 close general resemblance to that of Platynota rostrana, Imt is somewliat 

 smaller, and the head and thorax are pale yellow. The pupa is dark 

 mahogany brown, almost black. The moth is sulphur-yellow above; 

 the upper wings are marked with red-brown, or purple-brown. The 

 markings vary greatly in different individuals, forming a double letter 

 Y or an X upon the folded wings, but are sometimes reduced to a series 

 of dots, representing only the terminal and intersecting points of these 

 letters. The under wings are varying shades between yellow and brown. 

 Length from the tip of the beak to the extremity of the folded wings, 11'"" 

 { 1^0 inch ). The life-history and habits of this species in Florida are prob- 

 ably the same as Platynota rostrana. In the Report of the Commissioner 

 of Agriculture for ISSO will be found an account of both species. T. 

 sulphureana is there said to have three generations in a year in the lat- 

 itude of the District of Columbia, and probably only one in middle and 

 northern Maine. 



LARGER LEAF-ROLLER. 



{Tortrix^y* 



This is a somewhat larger insect than Platynota rostrana, from which, 

 however, the larva differs only in minute details. The pupa also is sim- 

 ilar to that of P. rostrana. The moth is rust-red, with three oblique 

 bands of maroon-red upon the upper wings, and their anterior (outer) 

 edge is sinuate. 



The habits of this species are precisely the same as the foregoing, but 

 the larva being larger is more destructive, and often half cuts off" small 

 twigs of tender growth, the leaves of which it folds and binds together 

 longitudinally, and feeds without preference upon the wilted leaves 

 within its retreat, or upon the fresh leaves of surrounding branches. 



WEB-MAEERS. 

 THE ORANGE-LEAF NOTHRIS. 



{Nothris citri/oUella Chambers.) 



The caterpillars of a minute moth have been reported from the ex- 

 treme southern portion of the orange district, as doing injury in the 

 groves. The following account of it is found in the Annual Report of 

 the Commissioner of Agriculture for 1879, p. 205: 



" Specimens of this insect were last summer received from Brevard 



