THE MYCETOPHIUD.i; OF NORTH AMERICA. 267 



cc. Apex of each abdominal segment blackish; dis- 

 tance from tip of R2+3 to R4+5 over twice as 

 great as from Ri to R2+3; wing with tw^o fascia 

 connected with each other along the veins 

 and two smaller spots, 

 d. Thorax not striped. 8. formosa. / 



dd. Thorax with stripes. 



8a. formosa, var. indigena n. var. 

 bb. With but a single cloud on apex of wing, no preapical 

 fascia, 

 c. A]3ex of Ri thickened. 



d. Antennae of male four times, of female at 

 least twice the length of the body. 

 e. Thoracic stripes wanting or but feebly 



indicated. 9. dara. '^ 



ee. Thoracic stripes brown. 10. conclnna. %/ 

 dd. Antennae of female less than one and one- 

 half times the length of the body. 11. Sp. 

 cc. Apex of Ri not thickened; distance from Ri to 

 22-1-3 about three-fourths as great as from R2+3 

 to Ri-fs. 12. geminata n. sp. 



I. Macrocera diluta Adams. 



1903. diluta, Adams. Kas. Univ. Science" Bulletin II. 22. 



Male : Yellow, shining ; antennae, except base, two stripes 

 on occiput, three fascia on mesonotum, the central one joining 

 two narrow ones coming from base of w'ings, three spots on 

 pleura, lower half of metanotum, base of abdominal segments 

 from the third, with hypopygium wholly, small spot on base 

 of middle and posterior coxae, tips of femora and tibiae, dark 

 brown ; wings hyaline, fascia near central part dark brown, a 

 small fuscous spot on anterior margin about midway between 

 tip of R2-I-3 and apex of wing, not reaching the media. 



Female : Agrees w'ith the male, except that all of the abdom- 

 inal segments, without the first, have the base dark brown ; the 

 subapical spot of wing is larger, crossing AIi. Length 5 mm. ; 

 antennae, 7 mm. Arizona, August. 



