246 



PLUTELLIDAE 



Plutfxla armoraciae Busck. 



1913, Proc. Ent. Soc. Wash., XIY. p. 219. 

 n. syn : 



Plutella monocldora Meyrick. 



1914, Exot. Micros. I, p. 228. 



Suspecting that Mr. Meyrick might have redescribed the Colorado 

 horseradish pest as P. monochlora, the writer sent him cotypes of 

 P. armoraciae in 1914 for comparison with the unique type of mono- 

 chlora, described from Colorado. 5000 feet alt. 



Mr. Meyrick immediately recognized it as his species and wrote 

 me to that effect. It is due to an oversight on the writer's part, that 

 the two names were placed separately in Barnes' List Lep. Bor. Am. 

 as Nos. 7676 and 7682. 



Harpipteryx xylostella Linne. PI. XXYIII, Fig. 12. 



This well known European species has been identified from North 

 Eastern United States and has been bred by Mr. S. A. Shaw at Hamp- 

 ton, New Hampshire, from Honeysuckle (Loniccre) , the same food- 

 plant as recorded in Europe. 



The species is close to and nearly identical in the pattern of the 

 forewing to our western //. dcntifcrella Walsingham, but is at once 

 distinguished from it by the dark brown hindwings. The shape of 

 the harps in the male genitalia of xylostella is somewhat more elongate 

 oval with the costal and dorsal margins nearly parallel, while in denti- 

 fcrclla these organs are ovate and broader; otherwise the structures 

 are very similar, compare Figs. 1 and 2, PI. XXXIX. //. fnistrella 

 Walsingham and H. canariella Walsingham, must be considered only 

 forms of H. dentifcrella; the genitalia in the three forms are identical; 

 but the names may with advantage be retained for the different ex- 

 treme wing-patterns, tho somewhat intermediate varieties occur. 



