Bucculatrix angustisquamella Braun 1925

Bucculatrix angustisquamella Braun (Figs. 160, 160a, 161. 161a.)
1925. Bucculatrix angitstisquamella Braun, Trans. Amer. Ent. Soc. LI : 220.
Type 2, Logan Canyon, near Logan, Utah [A.F.B.Coll.]. 1958. Bucculatrix angustisquamella Braun, Trans. Amer. Ent. Soc. LXXXIY :
107.
Face white, tuft of mingled white and gray hairs; eye-caps white, minutely gray speckled, each segment of the stalk shading from white through pale gray to dark gray. Thorax white, finely gray dusted. Fore wings white, scales, especially toward apex, narrow; brownor black-tipped scales are grouped into ill-defined markings, with a scattering of minutely brown-tipped scales ; a few minutely brown-tipped scales along costa from base, a more distinct streak in fold near base, and some brown-tipped scales along basal third of dorsum ; from just before middle of costa, a narrow oblique streak of dark-tipped scales, which may meet the upper edge of a larger patch of dark-tipped scales on middle of dorsum, bearing a group of black raised scales toward its inner edge below fold ; a second, broader and less oblique costal streak, is marked at the end of the cell by two or three darker scales, and is connected at its inner side with the dorsal patch and outwardly meets an irregular transverse band of dark-tipped scales ; on the outer side of this transverse band below apex is a group of blackish raised scales; dark scales at apex may form an apical spot, but usually appear scattered at apex and along termen ; a line of dark scales through the middle of
the cilia. Hind wings grayish white, cilia pale gray with ocherous bases. Legs grayish white, tarsal segments dark gray-tipped.
Alar expanse 7.5 to 8 mm.
Male genitalia (figs. 161, 161a). Harpes typical of the group, tapering, slender beyond middle, apex with short heavy setae ; tegumen long, exceeding the harpes, socii small, setose ; uncus present, a slender, sharp, setose hook ; anellus a slender, obliquely truncate cone ; aedeagus long, slender, tapering, aperture before the slender curving apical section ; vinculum a slightly refuse band. Scale sac (fig. 161a) very small.
Female genitalia (figs. 160, 160a). Segment 9 modified, rasping rods strongly sclerotized, vaginal setae in lateral and median groups, convex with sharp apical teeth, the larger with seven or eight teeth ; segment 8 laterally finely reticulate (fig. 160a) ; on the intersegmental membrane lateral to ostium, a depressed transversely elongate group of short specialized scales; ostium in a slight depression, ductus bursae sclerotized into segment 6, bending to the right and tapering to the slender membranous section ; signum a ring, ribs narrow, spines long and slender, the dorsal ribs with but one or two spines.
Specimens examined. — 2 $ , 3 9 .
Utah : Logan Canyon, near mouth of cottonwood Canyon, 2 type, 1 $ , 2 2 paratypes, amongst sagebrush, altitude 5500 feet, July 2, 1924 (A. F. Braun) [A.F.B.Coll.].
British Columbia: Oliver, 1 $, altitude 1000 feet, September 9, 1953 (J. E. H. Martin) [C.N.Coll.].
Food plant and early stages unknown.
The description of the fore wing is compiled in large part from the female type; in the other specimens the markings, though present, are less conspicuous, owing to fewer and paler dark-tipped scales. In genitalia, the slender harpes of the male, and the long sclerotized section of the ductus bursae separate angustisquamella from seorsa new species.

Bucculatrix angustisquamella is a moth in the family Bucculatricidae. It is found in North America, where it has been recorded from Utah and British Columbia. The species was first described in 1925 by Annette Frances Braun.

The wingspan is 7.5–8 mm.