NO. 1977. MONOGRAPH OF THE 8IGNIPH0RIN^—GIRAULT. 223 



23. SIGNIPHORA NIGRELLA, new species. 



Normal position. 



Male. — Length, 0.60 mm. Moderately small in size for the genus. 



Black, suffused slightly with brownish at the thorax; legs and an- 

 tennae brownish, the tarsi brownish yellow. Fore wings smoky out 

 nearly to the end of the marginal vein, the area clearer, however, 

 proximad of the bend of the submarginal vein but not wholly clear, 

 not then a distinct smoky band across the wing as in dadylopii. 

 Marginal fringes of the fore wing moderate in length, longest along 

 the caudal margin of the posterior wing, there distinctly longer than 

 the greatest width of that wing. Oblique crease in fore wing slightly 

 indicated; discal bristle absent. Longest marginal fringes of the fore 

 wing equal to about half of that wing's greatest width. Antennal 

 club long. 



Belongs to the nigra group and closely resembles both nigra and 

 dadylopii. From the former it differs colorationally in not having 

 the distal third of the fore wing more or less infuscated and struc- 

 turally in having the marginal fringes at the apex of the fore wing 

 twice longer than thosie of nigra at the same place, in having posterior 

 wings which are at least a third narrower and with distinctly longer 

 marginal fringes and in having a stigmal vein which is less straight 

 in relation to the marginal. From dadylopii it differs in color in 

 having proximal portions of the fore wing more or less smoky; and 

 in structure in all of the features pointed out for nigra but differing 

 even more pronouncedly in them. Also, it is not marked with 

 metallic green. 



From single specimen, the same magnification. 



Female . — Unknown . 



Described from a single male specimen remounted in xylol-balsam 

 from a tag in the U.S.N.M. labeled "471"^ Iss. 16 Jan. '94. Par: 

 Asp. [Chrysomplialus] tenehricosus Comstock, Waco, Tex." 



Habitat. — United States — Texas (Waco) . 



Host. — CJirysonriphalus tenehricosus (Comstock). 



Type.— Cat. No. 14204, U.S.N.M. One male in xylol-balsam 

 (Texas). 



24. SIGNIPHORA FAX, new species. 



Normal position. 



Female. — Length, 0.47 mm., mean. Small in size for the genus. 



General color dark or sooty brown, varying to brown, the thorax 

 (dorsal aspect) marked with lemon yellow, excepting the pronotum 

 and cephalic two-thirds of the mesoscutum, the yellow band thus 

 moderate in width. When brown, the abdomen is lighter at tip. 

 Fore wings smoky out to the end of the venation, the smoky area, as 

 usual, lighter proximal. Legs variable, brown in dark specimens, 

 with the knees, tips of tibiae and all of tarsi pallid yellowish; in light 



