60 U.S. NATIONAL MUSEUM BULLETIN 289 



Thorax: Wings (fig. 38) relatively slender; termen strongly oblique. 

 Primaries with all veins separate; vein 10 arising from cell considerably 

 closer to 9 than to 11; 11 originating somewhat basad at about middle 

 of cell; 2 almost straight to margin, arising from outer three-fourths 

 of cell, well separated from 3. Secondaries with discal cell extending 

 half w^ay to termen; veins 5 and 6 absent, the latter represented by a 

 short vestige at termmation of cell; 3 and 4 stalked about one-fourth 

 then* length; cubital pecten present. Marginal fringe of both wings 

 relatively long. 



Male genitalia. — Uncus well developed, simple. Gnathos fused, 

 V-shaped. Tegumen simple. Vinculum weak, reduced to a narrow 

 ring ventrally ; saccus undeveloped. Trans tilla absent. Valvae relatively 

 slender, except for basal expansion of sacculus. Aedeagus reduced in 

 length, somew^iat membranous; ejaculatory duct entering below 

 middle near base. Spermatophore very slender, elongate; aperture 

 at enlarged apical end. 



Female genitalia. — Ovipositor relatively short, broad; posterior 

 apophysis somewhat shortened, less than 1.5 X length of anterior pair. 

 Sinus vaginalis strongly dilated; ductus bursae slender, elongate; 

 corpus bursae slightly enlarged; signa absent. 



Tesuquea hawleyana Klots 



Figures 22, 38, 54-58, 71, 90, 108, 116; Map 10 



Tesuquea hawleyana Klots, 1936, American Mus. Novatates, no. 867, p. 4, figs. 

 6-8. — McDunnough, 1939, Mem. S. California Acad. Sci., vol. 2, no. 1, p. 61 

 (no. 7629).— Klots, 1942, Bull. American Mus. Nat. Hist., vol. 79, art. 6, 

 p. 416. 



Adult (fig. 22). — Wing expanse: cf , 11-14 mm.; 9, 16 mm. 



Head: Front grayish fuscous; vertex paler, grayish w^hite. An- 

 tennae pale gray above and beneath except for fuscous band encircling 

 basal third of each segment; dorsum of scape fuscous. Palpi fuscous, 

 mottled with grayish white. 



Thorax: Largely fuscous above with slight suffusion of gray; 

 ventral surfaces jjrimarily pale gray. Legs primarily fuscous above and 

 pale gray beneath except for whitish tips of tibial and tarsal segments. 

 Primaries largely pale gray irrorated with fuscous, usually with five 

 distinct fuscous markings of various sizes distributed as follows: 

 a large, transversely oblique band across wing base; a large trapezoidal 

 patch about midway along costa; a short, sometimes interrupted, 

 transverse band at end of discal cell; a similar, strongly tufted band 

 or spot partly across lower third of wing; and a small discal spot 

 midway between two short, transverse bands; outer fourth of wing 

 sometimes with suffusion of dark scales. Secondaries gray; fringes of 

 both wings gray. 



