294 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 115 



12. Aedeagus slender, length more than six times width; valvae, often with 



basal processes Ithome Chambers 



Aedeagus stout, length not more than four times width; valvae without 

 basal processes (fig. 24) Synploca, new genus 



Neoploca, new genus 



Figures 7, 11, 59 



Type-species: Neoploca corusca Hodges, new species. 



Head: smooth-scaled; labial palpus recurved, reaching beyond 

 vertex, third segment shorter than second, apex acute; maxillary 

 palpus folded over base of tongue; eye emarginate on anterodorsal 

 angle; ocellus visible; antenna simple, ciliate, two-thirds length of 

 forewing, pecten absent. Forewing: lanceolate; 12 veins present; lb 

 furcate basally; 2 developed toward margin of wing; 3, 4, and 5 sepa- 

 rate, 3 from angle of cell; 6, 7, and 8 stalked, 7 out of 6 at nearly 

 five-sLxths; cell open. Hind wing: lanceolate; cell open; 8 veins 

 present; lb simple; 2, 3, 4, and 5 almost equidistant; 6 and 7 stalked, 

 diverging at three-fourths, each ending at seven-eighths. Metathoracic 

 tibia with long scales on dorsal surface, Male genitalia: vinculum 

 narrow; tegumen relatively broad; valvae symmetrical, no free parts, 

 setae abundant toward apex and on costal margin; uncus heavily 

 sclerotized, somewhat asymmetrical; aedeagus loosely helical, no 

 cornuti present. Female genitalia: ostium bursae slightly beyond 

 middle of seventh sternum, trapezoidal sclerotized area preceding 

 ostium bursae; ductus bursae and corpus bursae lightly sclerotized, 

 ductus bursae coiled before inception of bursa copulatrix; two spine- 

 shaped signa present. 



Neoploca is closest to Periploca, but differs from it in having a well- 

 developed uncus and a relatively broad tegumen. 



Neoploca corusca, new species 



Figures 19, 37, 59 



Head: pale, shining gold; thorax and forewing shining bronze- 

 black; cilia shining fuscous; hind wing somewhat shining fuscous, 

 cilia fuscous. Metathoracic leg shining gold or lead colored, apex 

 of femur and tibia shining white; base and apex of first tarsal seg- 

 ment shining white, apex of second segment shining white on external 

 surface, remaining segments unicolorous, ventral surface of first four 

 tarsal segments shining white. Abdomen: apices of segments white 

 with purple reflections, some shining ochreous-brown on segments. 

 Male genitalia: as in figure 19 (RWH slide 2122). Female genitalia: 

 as in figure 37 (RWH slide 532). Alar expanse: 9-12 mm. 



