CEEATOMYIELLA AND PARADIDYMA REINHARD 43 



UNRECOGNIZED SPECIES 



The following species apparently belong to Paradidyma but have 

 not been identified in the material contained in the United States 

 National Museum. Both species were characterized in abbreviated 

 descriptive terms, which were kindly transcribed for me by the late 

 Dr. J. M. Aldrich. The types are located in the Experiment Station 

 Collection, Lima, Peru. 



Atrophopoda peruana Townsend 



Atrophopoda peruana Townsend, Eev. Chil. Hist. Nat., vol. 31, p. 159, 1927. 



Body length, 5 mm. ; wing length, 4iy4 mm. 1 male, Cacaturo, Piura Province, 

 Peru, May 22 on herbage. 



Blackish ; head silvery white, facial plate and facial ridges gray ; parafrontals 

 blackish by direct view, thinly pollinose ; frontal stripe dark brown ; first an- 

 tennal joint brown; second joint and palpi very pale fulvous; third joint 

 blackish; pleura silvery, mesoscutellum and scutellum less thickly so; two 

 heavy wide black thoracic vittae unbroken and reaching scutellum ; abdomen 

 shining; median vittae and narrow bases of intermediate segments thinly 

 silvery, fourth segment more widely on base. Legs black. Wings pale smoky 

 yellowish on costa and veins. Squamae glassy-whitish. 



Apparently quite similar to Paradidyma {Diaphoropeza) peruana 

 (Townsend), which was also described (female only) from Peru. 

 The present form may be the male of the last mentioned species, but 

 it seems impossible to decide without specimens available for 

 comparison. 



Paradidyma PEmxrviANA Townsend 



Paradidyma peruviana Townsend, Rev. Chil. Hist. Nat., vol. 31, p. 159, 1927. 



Body length, 7 mm. ; wing length, 6 mm. One female, Chosica, Peru, 3,000 ft, 

 Oct. 18, indoors. 



Differs from P. validincrvis by female vertical width well over one-third 

 head width ; frontals two below base of arista ; width of frontal stripe two- 

 thirds of one parafrontal at middle ; ocellars of same strength as hind proclinate 

 f ronto-orbital ; facio-orbitals eight or nine in row along inner edge of para- 

 facials ; cheek two-fifths the eye length ; third vein bristly halfway to anterior 

 cross vein ; apical cell closed considerably before wing tip ; hind cross vein 

 much nearer bend of fourth and hardly its own length from same; palpi yel- 

 lowish or fulvous ; four moderately wide, equal black thoracic vittae not very 

 heavy ; wing veins yellowish ; " nos " * infuscate. 



According to the description the species is distinct from all other 

 members of the genus by the frontal bristles descending beneath the 

 base of the arista. This character, the wide front, and the strong 

 ocellars should make the species easily recognizable. 



* Meaning unknown, probably a misprint. 



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