NEOTROPICAL MICROLEPIDOPTERA, VIII — DUCKWORTH 393 



stalked. Abdomen of males with strong, eversible pair of hair pencils 

 contained in an elongate cuplike pocket on first sternum (fig. la). 



jMale genitalia: Uncus simple or furcate, erect or strongly recurved; 

 gnathos with separate arms, with or without yokelike connection from 

 their bases; subscaphium present or absent; harpe sunple, furcate 

 setae present; anellus with four lateral lobes, ventral pair simple, 

 setiferous, dorsal pair larger, variously shaped; aedeagus with or 

 without long lateral process, entrance of ductus ejaculatorius lateral, 

 cornuti present or absent. 



Female genitaha: Ostium bursae sclerotized; ductus bursae mem- 

 branous; inception of ductus seminalis near ostium; corpus bui"sae 

 membranous, with a heavily sclerotized, dumbbell-shaped, dentate 

 signum. 



This genus is unique in that it is recognized easily by its wing shape 

 and maculation, a situation not common in the stenomids. No other 

 genus in the family has the falcate wing apex and curious wing macula- 

 tion which Meyrick (1916) referred to as "an aspect of reptilian 

 mimicry." As regards "reptilian municry, " I have not been able to 

 locate any prior or subsequent application of this term and must 

 simply presume that Meyrick detected a resemblance between the 

 maculation of the moths of this genus and the scaling of reptiles. 



The genitalia provide a number of distinguishing characters for the 

 genus. In the males the lateral entrance of the ductus ejaculatorius 

 into the aedeagus plus the separate gnathal arms associated with 

 either a yokelike connection from their bases or a subscaphium on the 

 tuba analis. In the females the mception of the ductus seminalis just 

 before the ostium, membranous ductus bursae, and dumbbell-shaped 

 signum readily distinguish the genus. 



Key to the Species of Falculina Based on the Genitalia 



1. Male 2 



Female 7 



2. Subscaphium present 3 



Subscaphium absent 4 



3. Uncus truncate apically F. ochricostata Zeller 



Uncus strongly furcate apically F. kasyi, new species 



4. Ventral edge of harpe clothed with short, heavy setae 5 



Ventral edge of harpe not clothed with short, heavy setae 6 



5. Short, heavy setae extending to apex of harpe F. bella, new species 



Short, heavy setae not extending beyond apical third of ventral margin. 



F. lepidota Meyrick 



6. Anellus with one dorsal lobe large, curved laterad, apex irregularly truncate. 



F. antitypa Meyrick 

 Anellus with one dorsal lobe large, curved laterad, apex acute. 



F. caustopis Meyrick 



