BAGWORM MOTHS OF THE WESTERN HEMISPHERE 73 



Male genitalia. — Tegumen undivided at apex. Valves with 

 pulvilli moderately to well developed, minutely spined; sacculus with 

 apical spinules. Vinculum quadrate, longer than broad, abruptly 

 narrowing to relatively elongate, rodlike saccus. Eighth sternite 

 furcations slender, usually slightly curved, knoblike tips, somewhat 

 divergent. 



Female. — Vermiform, all external appendages vestigial. Head, 

 dorsal area of thorax somewhat sclerotized. Body naked except for 

 circular mat of hairs near posterior tip of abdomen. 



Female genitalia. — (Fig. 305.) Similar to that of Cryptothelea. 

 External structures weakly sclerotized, mostly membranous. Duc- 

 tus seminalis extremely short, less than ji length of spermatheca. 

 Bursa copulatrix slightly exceeding spermatheca in volume. Acces- 

 sory gland strongly bilobed, arising from median oviduct opposite 

 seminal duct. 



Discussion. — It has been necessary to erect two new generic 

 names for the New World species formerly included in the genus 

 Eurukuttarus , which was found to consist of two distinct groups. 

 This Old World genus cannot be used for either group because it was 

 diagnosed erroneously by Hampson and, consequently, has been mis- 

 applied by several authors to certain species of our hemisphere. 



Hampson (1891) originally stated that Eurukuttarus lacked a 

 spine on the foretibia and that vein 6 (Mj) was absent in both wings. 

 The type species of Hampson's genus, Eurukuttarus pileatus, con- 

 sists of only two specimens, both without abdomens, in the collection 

 of the British Museum; one of the specimens is the holotype. The 

 present author examined the foreleg of the holotype and the entire 

 second specimen, which resulted in the discovery of a very prominent 

 epiphysis. The inclusion of our species under this genus and the 

 correct generic placement of E. jnleatus, thus, became somewhat doubtful. 

 According to Hampson's key in the "Moths of India" (1892), E. 

 pileatus would then fall under the genus Acantliop)syche, subgenus 

 Oeceticoides. Such a placement seems unlikely, but this problem has 

 not been pursued. 



In addition to the epipysis, E. pileatus differs further from Astala 

 in the fact that the antennal pectinations arise basad. These two 

 features separate the two genera adequately. The male genitalia and 

 abdominal plates of E. pileatus, when eventually described, may serve 

 to further separate "Eurukuttarus" from both Astala and Basicladus. 



The genus Astala represents a somewhat heterogeneous-appearing 

 group of moths that, however, are related closely as shown by their 

 very similar male genitalia, antennae, leg and wing structure. The 

 diversity is observed almost entirely in scale structure and pattern. 



