128 U.S. NATIONAL MUSEUM BULLETIN 244 



Oicocestis [sic] kirbyi Koehler, Sonderheft Zeitsch. Wiss. InsektenbioL, vol. 19, 



no. 2, p. 25, 1924. 

 Oiceticus [sic] kerbyi [sic] Lahille, Minist. Agric. Rep. Argent., circ. 583, p. 97, 



1926. 

 Oiketicus kirbyi subspecies platensis Berg. — Koehler, Physis, vol. 17, pp. 470, 471, 

 1939. 



Male.^ — -(Fig. 58.) Antennae with 28-41 segments; apical third 

 strongly serrate. Body vesture light brown to fuscous. Prothoracic 

 tibia with epiphysis absent. Mcso- and metathoracic tibiae with 1-2 

 apical spurs. 



Wings fully scaled; relatively short, broad for genus. Primaries 

 with discal scales (fig. 354) broadly triangular, with rather blimt, 

 rounded apices; cell dark fuscous; hyaline bar not strongly oblique, 

 giving outer margin of discal spot a somewhat truncated appearance ; 

 paler areas of wings light to dark brown. Venation relatively constant, 

 12- and 8-veined. Outer margin of secondaries evenly rounded or 

 slightly sinuate; in few specimens margin excavated. Wing expanse 

 31-47 mm., x = 36.7 mm. (n=69).* 



Male genitalia. — (Fig. 291.) Valves with pulvilli well developed. 



Female. — Length 25-33 mm. As described for genus. 



Female genitalia. — (Fig. 315.) 



Case.^ — (Figs. 110, 111.) Length 55-75 mm.; diameter 20-25 mm. 

 Broadly fusiform, very loose construction, circular thatching of small 

 leaves, petioles, and short, slender twigs, usually overlaid by thin, 

 more or less incomplete sheet of grey silk; some specimens show no 

 exterior silk covering. 



Type. — Lost. 



Type locality. — Argentina. 



Recorded hosts. — "Fabaceae: Cytisus sp.; Rosaceae: Prunus 

 persica (L.) Batsch., Pyrus malus L." (from specimen labels). Apoc- 

 ynaceae: Vinca minor L., Corylaceae: Ostrya virginiana (Mill.) K. 

 Koch; Fabaceae: Bobinia pseudo-acacia L. ; Ulmaceae: Ulmus ameri- 

 cana L. 



Distribution. — (Map 12.) At present known only from the south- 

 ern portion of South America below the 20° line of latitude; commonly 

 occurring through the Parana Paraguay Plain and the Parana Plateau 

 of southern Brazil. 



Discussion. — Oiketicus kirbyi is not known definitely to occur in 

 Argentina. All specimens from that country previously identified as 

 0. kirbyi were found, upon examination, to be 0. platensis; thus all 

 references in the literature to 0. kirbyi occurring in Argentina are 

 believed to pertain to 0. platensis. Some authors (e.g., Berg, Koehler) 



*For explanation of symbols, see ftn., p. 114. 



