REVISION OF THE OECOPHORIDAE — CLARKE 127 



Sacculus broader than one-third width of harpe at base; trans- 

 verse arm of clasper appreciably longer than longitudinal 

 arm; aedeagus longer than one-half length of harpe (fig. 147) 



sphaeralceae, new species (p. 138) 



6. Transverse arm of clasper short, hardly extending beyond 



middle of harpe (fig. 148) hildaella, new species (p. 140) 



Transverse arm of clasper long, at least extending beyond middle 



of harpe (figs. 142, 144, etc.) 7 



7. Aedeagus sharply bent at middle (fig. 142a)- .gracilis (Walsingham) (p. 133) 

 Aedeagus slightly curved (figs. 149, 150, etc.) 8 



8. Transverse arm of clasper arising at middle, or slightly before 



middle of harpe; aedeagus strongly compressed (figs. 149, 151) 9 



Transverse arm of clasper arising well before middle of harpe; 



aedeagus not appreciably compressed (fig. 150) 10 



9. Transverse arm of clasper reaching to or slightly beyond costa 



of harpe ; free from below middle of harpe 



klamathiana (Walsingham) (p. 142) 

 Transverse arm of clas^jer not reaching costa of harpe; free 



from middle of harpe or beyond (fig. 149) sciadopa (Meyrick) (p. 144) 



10. Both arms of clasper very slender, sharply pointed; vesica armed 

 with an elongate patch of fine cornuti (figs. 150, 150a) 



nivalis (Braun) (p. 139) 

 Arms of clasper otherwise; vesica armed with an elongate patch 



of strong cornuti (fig. 144) thoracenigraeella (Chambers) (p. 135) 



KEY TO THE SPECIES OF MARTYRHILDA BASED ON FEMALE 

 GENITALIA 



1. Ductus bursae partly sclerotized (figs. 100,239) 2 



Ductus bursae membranous (figs. 232, 233; etc.) 3 



2. Sclerotized portions of ductus bursae consisting of one moder- 



ately large and one small area, the former bearing several 

 thornlike teeth inwardly (fig. 239) .thoracenigraeella (Chambers) (p. 135) 

 Sclerotized portion of ductus bursae consisting of one large 

 area armed inwardly wdth 17 or 18 short, stout teeth (fig. 100) 



canella (Busck) (p. 128) 



3. Inner surface of ductus bursae armed with a group of 11 stout 



teeth (fig. 238) sordidella, new species (p. 132) 



Inner surface of ductus bursae unarmed (figs. 232, etc.) 4 



4. Signum broadly oval (figs. 231, 233) 5 



Signum elongate (figs. 232, 235, etc.) 6 



5. Ostium with a strongly sclerotized area laterally (fig. 233) 



gracilis (Walsingham) (p. 133) 

 Ostium without such sclerotized area (fig. 231) nivalis (Braun) (p. 139) 



6. Signum with several long teeth projecting from posterior end 



(fig. 232) umbraticostella (Walsingham) (p. 130) 



Signum without such teeth (figs. 235, etc.) 7 



7. Bursa copulatrix distinctly asymmetrical (figs. 234, 236) 8 



Bursa copulatrix symmetrical (figs. 235, 237) 9 



8. Genital plate with two narrow raised ridges posterior to ostium 



(fig. 234) klamathiana (Walsingham) (p. 142) 



Genital plate without such ridges (fig. 236) sciadopa (Meyrick) (p. 144) 



9. Ostium with sclerotized, cuplike structures laterally (fig. 235) 



thoracefasciella (Chambers) (p. 136) 

 10. Ostium without such structures (fig. 237).. sphaeralceae, new species (p 138) 



