640 PROCEEDINGS OF THE NATIONAL MUSEUM vol. in 



of the ductus seminalis; the ductus bursae of placidella and 

 squamulella are without such a constriction. 



Haimbachia maroniella Dyar and Heinrich 



Figures 6, 26 



Haimbachia maroniella Dyar and Heinrich, 1927, Proc. U.S. Nat. Mus., vol. 71, 

 p. 36. 



Alar expanse: Male 15 mm.; female 15-17 mm. 



Frons strongly conical. Maculation and coloration as in dumptalis, 

 but with the forewing narrower and more acuminate. 



Male genitalia (figs. 6-6b) : Symmetrical. Dorsal basal lobe 

 broadly rounded distally, costal margin with a toothlike projection 

 near middle; hook from the lobe short, stout, enlarged basally. 

 Vinculum conspicuously tapering ventrad, ventral margin straight. 

 Aedeagus with no well-developed cornutus, but with numerous small 

 spinules. 



Female genitalia (fig. 26) : The tonguelike projection short, weakly 

 bifid distally but not free, rounded and fused with ductus bursae at 

 ostium. Ventral margin of ostium obtusely angulate. Ductus 

 bursae long, slender, weakly sclerotized, longitudinally rugose and with 

 minute spinules from ostium to or almost to origin of ductus seminalis. 

 Signa two small, round, slightly convex, weakly scobinate sclerotiza- 

 tions. 



Type: Male, in U.S. National Museum, USNM 29435. 



Type locality: "Sixty miles up the Maroni River," French Guiana. 



Food plant: Unknown. 



Distribution: Known only from the type locality. 



Remarks : No consistent differences were noted in color and macula- 

 tion for the separation of dumptalis and maroniella, but the strong 

 conical frons and more acuminate forewing of maroniella readily 

 distinguish specimens of it from those of dumptalis. The tapering 

 vinculum with the straight ventral margin is diagnostic for the 

 male genitalia of maroniella and separates them from those of all other 

 known species of the genus; the short, unforked, ventral, tonguelike 

 projection and medial obtuse angulation of the ventral margin of the 

 ostium is similarly diagnostic for the female genitalia. 



Haimbachia discalis Dyar and Heinrich 



Figures 10, 28 



Haimbachia discalis Dyar and Heinrich, 1927, Proc. U.S. Nat. Mus., vol. 71, p. 37. 



Alar expanse: Male 14-18 mm.; female 15-19 mm. 

 Frons round. Facies brownish. Fringe of forewing metallic. 

 Color and maculation similar to dumptalis and maroniella, but with 



