ART. 19. MOTHS OF THE GENUS DIATRAEA DYAR AKD HEINRICH 43 



SPECIES UNRECOGNIZED 



The following species, described in Diatraea, are unknown to us 

 except by description : 



Diatraea ohliqualis Hampsox, Ann. Mag. Xat. Hist., ser. 9, vol. 

 3, 1919, p. 543. From Argentina. Possibly referable to Trinidadia. 



Diatraea endothermalis Hajvipson^ Ann. ISIag. Nat. Hist., ser. 9, 

 vol. 3, 1919, p. 544. From Peru. 



Diatraea lentist7ialis Hampsox, Ann. Mag. Nat. Plist., ser. 9, vol. 

 3, 1919, p. 546. From Argentina. 



EXPLANATION OF PLATES 



The drawings accompanyiug this paper were made under the authors' super- 

 vision by Miss Eleanor T. Armstrong, of the Bureau of Entomology. They were 

 not drawn to scale, but to show structural differences. 



Explanation of Symbols Appliei> to Genitalia 



MALE 



OM=:anellus. 



c7/i=basal projection (lobe) from costa of harpe. 



CH =cornutus (or coruuti) of penis. 



^n=gnathos. 



;=detached juxta of anellus. 



ZZ=lateraI lobes of tegumen. 



67)fir=spining at apex of gnathos. 



/f7=tegumen. 



«=uncus. 



vm=vinculum. 



FEMALE 



fcc=bursa copulatrix. 

 rtf)=ductus bursae. 

 j/o=genital opening. 



Plate 1 



Abdominal tufts and male genitalia (Diatraea) 



Fig. 1. Basal segments of male abdomen showing tufts (X) on caudal margin 

 of second segment (Diatraea saccharalis) . 



2. Diatraea saccharalis (Fabricius), dissected genitalia: A=tegumen, 



uncus and gnathos (lateral view) ; B— aedoeagus; C— harpes, vinicu- 

 lum and anellus (ventral view). 



3. Diatraea magnifactella Dyar: A=tegumen, uncus and gnathos (lateral 



view) ; i?=harpes, vinculum and anellus (ventral view) ; C=aedoeagus. 



4. Diatraea pedibarbata Dyar: A=tegumen, uncus and gnathos (lateral 



view) ; jB=harpes, vinculum and anellus (ventral view) ; 0= 

 aedoeagus. 



