MICROLEPIDOPTERA OF JUAN FERNANDEZ ISLANDS — CLARKE 39 



a long pear-shaped plate. Vinculum terminating in two widely 

 separated, blunt points. Gnathos asymmetrical, curved. Uncus 

 short, rectangular, posterior edge excavated. Aedeagus robust, 

 armed with a lateroterminal pair of teeth. 



Figure 31. — Juania parva, new species: 31, ventral view of male genitalia with left harpe 

 and aedeagus removed; 31a, aedeagus. 



Type: Masatierra: El Pangal, 350 m. (Feb. 18, 1951). 



Described from the unique male type. This is the smallest of the 

 known species of J'uania and appears to be most nearly related to 

 chiloma. It differs from that species by the paired teeth of the aedea- 

 gus, the very slender, weak cucullus and the long, strong terminal 

 hook of sacculus; also, parva lacks any suggestion of the buff longi- 

 tudinal area of forewing of chiloma. 



Juania byssifera, new species 



Figure 32 



Alar expanse 14 mm. 



Labial palpus buff; second and third segments light drab on outer 

 side. Antenna drab except some buff scaling toward base; scape 

 buff. Head light ochraceous buff, slightly darker posteriorly. Tho- 

 rax and forewing grayish fuscous; from base of forewing to termen 

 a slender, buff, longitudinal line; extreme costal edge narrowly 

 yellowish; ground color somewhat mottled but, except for longitudinal 

 line, forewing without distinct markings; cilia grayish fuscous except 



