BAGWORM MOTHS OF THE WESTERN HEMISPHERE 97 



Artipenna, new subgenus 



Type of subgenus. — Thyridopteryx seitzi Gaede, 1936. 



Male. — Tibiae of all legs completely lacking in armature. 



Primaries with outer fourth of costa sharply curved to wing apex; 

 outer margin relatively straight, with rather distinct tornus, hindmar- 

 gin subequal in length; 10 veins present; R3 + 4 completely united, R5 

 connate at base; M2+ 3 widely separate from Cui, equalling distance 

 of Cui from Cu2. Secondaries elongate, narrow (hence, subgeneric 

 name "Artipenna"), and approximately % area of primaries; termen 

 somewhat acute, extending as far as apex of discal cell in forewings; 

 5(?) veins present; Cui extending from very prominent cell into 

 wing apex; M2 + 3 and Cu2 arising from cell above and below Cui 

 at equal distances; Mi absent(?); above, cell bends outward almost 

 to costal margin, sending off short vein (Sc+Ri+Rs) from anterior 

 bend to margin. 



39. Aniiniila seitzi (Gaede), new combination 



Figures 37, 220, 280; Map 8 

 Thyridopteryx seitzi Gaede, Macrolep. World, vol. 6, p. 11S2, pi. 169e, 1936. 



Male. — (Fig. 37.) Primaries completely transparent except for 

 scattering of dark scales along costal margin. Secondaries mostly 

 transparent, terminal third densely scaled, dark fuscous; inner 

 margin with long white hairs. Wing expanse 16 mm. 



Male genitalia. — (Fig. 280.) Greatest width near middle of 

 genitalia, lateral margins nearly parallel. Saccus well developed, 

 approximately % as long as main body of genitalia. Base of aedeagus 

 very slightly enlarged. Fm'cations of eighth sternite (fig. 220) 

 parallel to slightly divergent; apices noticeably enlarged. 



Case. — Unknown. 



Type.^ — In the Senckenberg Aluseum. 



Type locality. — Rio de Janeu'o, Brazil. 



Recorded hosts. — None. 



Distribution. — (Map 8.) This species is represented by a single 

 specimen, collected by Adalbert Seitz, from Rio de Janeiro (of the 

 Parana Plateau). 



Discussion. — The above descriptions are somewhat incomplete 

 owing to the lack of available study material. It is possible that 

 the hindwings of the unique specimen are deformed to some extent, 

 but at present this cannot be decided. The wings of the type were 

 not available for examination; however, the writer was able to study 

 photographs of the specimen as well as slide preparations of the legs, 

 abdomen, and genitalia. The foregoing subgeneric and specific 

 descriptions were acquired from these materials and from the original 



