MOTHS OF THE GENUS RHABDATOMIS — FIELD 49 



9. Abdomen straw yellow above, fuscous below (fig. 23) draudti 



Abdomen with terminal segments entirely iuscous (fig. 30) fasseli 



10. Abdomen entirely straw yellow 11 



Abdomen straw yellow with a lateral patch of fuscous near middle [see key 



based on genital characters] (figs. 21, 22, 24) laudamia, knabi 



11. Submarginal fuscous band along costa of forewing above extending to edge of 



wing; fuscous on apex of hindwing above reduced to the margin (fig. 31). 



peruviana 

 Submarginal fuscous band along costa of forewing above outlined around apex 

 by yellow; fuscous on apex of hindwing above covering apical area (fig. 25). 



extensa 



BASED ON GENITAL CHARACTERS 



1. Males ■ 2 



Females (those of only four species are known) 13 



2. Anellus with two separate small dorsal plates as well as a single large ventral 



plate (juxta) 3 



Anellus with a single large hoodlike dorsal plate in addition to the large 

 ventral plate (juxta) 11 



3. Saccus greatly produced anteriorly, nearly twice as long as broad; juxta 



lacking mesially placed finger or spinelike process (fig. 1) zaba 



Saccus not greatly produced anteriorly; juxta with mesially placed finger 

 or spinelike process 4 



4. Harpe bilobed at apex; juxta with a mesially placed spinelike process . . 5 

 Harpe trilobed at apex; juxta with a mesially placed fingerUke process . 10 



5. Dorsal plates of anellus shghtly scobinate (fig. 3) mandana 



Dorsal plates of anellus smooth 6 



6. Harpe with apex at costa only slightly produced (fig. 2) dognini 



Harpe with apical lobe from costa, greatly produced and curved forming a 



fingerlike process 7 



7. Harpe with apical lobe from costa sharply curved inward and with cuiller 



shghtly curved downward in lateral view (fig. 7) knabi 



Harpe with apical lobe from costa gradually curved inward and upward 

 and with cuiller curved upward in lateral view 8 



8. Spinelike process of juxta appearing to arise from its anterior margin (fig. 5). 



draudti 

 Spinehke process of juxta appearing to arise from its posterior margin ... 9 



9. Aedeagus almost as broad distally as it is at base laudamia 



Aedeagus distinctly narrower distally than at its base (fig. 4) . . . melinda 



10. Aedeagus flattened dorsoventrally ; harpe with apical lobe from costa sharply 



pointed and beaklike (fig. 8) extensa 



Aedeagus not flattened dorsoventrally; harpe with apical lobe from costa 

 broad and rounded (fig. 6) cora 



11. Dorsal plate of anellus with large distinctly hooded posterior projection; 



harpe with apical lobe from costa large, much longer than broad .... 12 



Dorsal plate of anellus with posterior projection small, not distinctly hooded; 



harpe with apical lobe from costa small and at least as broad as long (fig. 1 1) . 



pusa 



12. Aedeagus with at least three large cornuti (fig. 9) fasseli 



Aedeagus lacking cornuti (fig. 10) peruviana 



13. Signum very small, consisting of a very narrow and weakly sclerotized and 



slightly scobinate area 14 



Signum larger, consisting of a ribbonlike or pouchhke area 15 



