20 BULLETIN 85, UNITED STATES NATIONAL MUSEUM. 



d. Wings rather dark, with subapical whitish band before the apical dark band; 

 veins abundantly spotted with dark brown; first marginal cell mostly clear; 

 vertex broadly and usually deeply emarginate in front; segment II of 



antenna more than one- third as long as flagellmn maculipennis Fitch. 



c^. Wings lighter, unicolored to apical brown band; latter lighter than in above 

 species; first marginal cell brown; veins without spots; vertex longer, as in 

 vemalis, less emarginate in front; segment II of antennae less than one-third 



as long as flagellum marginata Patch. 



a^. Wings not maculated, yellowish brown, thick and transversely wrinkled, rela- 

 tively not so broad. 

 6'. Body, with wings, seldom less than 4 mm. in length; vertex large, deeply emar- 

 ginate in front, protruding to nearly midpoint of second antennal segment, 

 sometimes less, sometimes raised on margins; flagellum of antennae usually 

 three to four times as long as segment II ; forceps of male long, constricted mid- 

 way and more or less pyriform ; forewings thick, nearly opaque . . vemalis Fitch. 

 6-. Length seldom more than 3 mm., often less; vertex smaller, protruding less over 

 antennae, not deeply emarginate in front, scarcely raised on margins; flagellum 

 of antennae usually about two and a half times as long as segment II; forceps of 

 male usually short, stout, not pyriform, truncate at apex, more pubescent, 

 especially at apex; forewings thinner, seniitransparent caricis, new species. 



LIVIA COLORADENSIS, new species. 



Figs. 20, 27, 33, 222, 275, 426. 



Length of body 2.4 mm.; length of forewing 2.4; width of head 

 0.80; length of vertex, 0.55. General color brown to dark brown, 

 darker on abdomen than on thorax and head. Body robust, mod- 

 erately small. 



Head relatively short, not longer than width between eyes; occip- 

 ital margin but shghtly arcuate ; vertex coarsely vermiculo-punctate, 

 with a broad, rounded depression on each side of median line, flat 

 anteriorly, only slightly emarginate in front at median line and 

 also over antennal insertions. Eyes less compressed than in jun- 

 corum, but shghtly bulging; ocelU small. Antennge short, stout; 

 basal segment pedicellate; II not much longer than I; flagellum 

 stout, about three and a hah times as long as II ; terminal setse long. 



Thorax flat, coarsely punctate, more so on pronotum than on rest 

 of notum. Pronotum about as long as prsescutum, sometimes 

 shghtly shorter; margin of lateral extremity even with face. Wings 

 subrectangular, about one and a half times as long as broad, rather 

 square apically, coriaceous, conspicuously maculated; apical fourth 

 darkly spotted and maculated, the rest with fewer and more scat- 

 tered spots; veins with numerous black spots at regular intervals; 

 second marginal cell broad, larger than first. 



Genitalia. — Male. — Genital segment small, rounded ; forceps small, 

 scarcely arched, narrowly acute at apex; anal valve large, long, 

 broad, longer than forceps, square at tip, sides subparaUel. Female. — 

 Abdomen very stout; genital segment not quite as long as rest of 

 abdomen; dorsal valve longer than ventral, equally acute. 



