MICROLEPIDOPTERA OF JUAN FERNANDEZ ISLANDS — CLARKE 87 



culum produced into a long point anteriorly, posterior edge roughened. 

 Gnathos a small hook. Uncus comparatively weak, hood shaped. 

 Aedeagus as long as tegumen and uncus combined, slightly curved, 

 bulbous basally. 



Female genitalia (slides 10444, 10756): Ostium moderately broad, 

 slitlike. Ductus bursae sclerotized posteriorly. Signum a well- 

 developed triangular plate \\dth a high central longitudinal ridge. 



Genus Apothetoeca Meyrick 



Apothetoeca Meyrick, 1922, in Skottsberg, The natural history of Juan Fernandez 

 and Easter Island, vol. 3, pt. 2. p. 268. 



Type-species: Apothetoeca synaphrista Meyrick, ibid., p. 269 [by 

 monotypy]. 



Apothetoeca synaphrista Meyrick 



Figures 89-90 



Apothetoeca synaphrista Meyrick, 1922, in Skottsberg, The natural history of 

 Juan Fernandez and Easter Island, vol. 3, pt. 2, p. 269. 



Male genitalia : Dorsal arm of harpe long, curved but not exceeding 

 uncus; distal end strongly dilated and clothed with large, broad 

 scales; ventral arm of harpe stout with a somewhat hooked point. 

 Uncus rather narrow, thickened, bluntly pointed. Gnathos long, 

 curved, beaklike. Vinculum narrowly produced anteriorly, as long 

 as tegumen. Anellus arising as a paired bulbous process and produced 

 into a pair of slender recurved branches. Aedeagus slender, nearly 

 straight, greatly enlarged basally. 



Type : Naturhistoriska Riksmuseum, Stockholm. 



Type locality: "Masatierra." 



There are no specimens of this species in the present collection, and 

 it is known only from the type. In my key I have brought Apothe- 

 toeca out in the same couplet with Pseudarla, and the character 

 used to separate it from Pseudarla is the connate condition of veins 

 3 and 4 of the hindwing. On the intersegmental membrane of Apothe- 

 toeca, between the 8th abdominal segment and the genitalia, there 

 are numerous large, conspicuous, bulbous scales. These are readily 

 deciduous and must be treated carefully to prevent their removal. 

 From each side of the 8th segment there is a long hair pencil. All of 

 these secondary characters, together with the peculiar scale thicken- 

 ing of the antenna mentioned by Meyrick, are undoubtedly confined 

 to the male. The genitalia of the male are characteristically gelechiid 

 and, in general form, are similar to Gelechia. The aedeagus of 

 Apothetoeca is extremely slender and arises anterior to the tegumen 

 between two long, curved arms of the anellus. 



