140 PROCEEDINGS OF THE NATIONAL MUSEUM vol.93 



Distribution. — United States: Arizona. 



Ten specimens examined. 



Remarks. — The occasional occurrence of specimens with fuscous 

 patches of various shapes and sizes is not uncommon in many of the 

 species of Geometridae. The name nigripun-cta was applied by Cassino 

 and Swett to a male form with a patch of fuscous scales on the fore 

 wing just beyond the transverse posterior line near the inner margin; 

 and to a female with a similar patch on hind wing near the inner 

 margin and adjacent to transverse line in addition to the patch on the 

 fore wing. In my opinion, nigripimcta represents nothing more than 

 a color variant; and the name is therefore placed in synonymy. 



5. BESMA QUERCIVORAIUA (Gucnee) 



Plate 4, Figures 12, 12A; Plate 10, Figure 31 



Metanema guercivoraria Guenee, Histoire naturelle des insectes lepidopteres, vol. 



9, p. 172, 1857.— Packard, Rep. U. S. Geol. Surv. Terr., vol. 10, p. 544, 1876.— 



Hulst, U. S. Nat. Mus. Bull. 52, p. 342, 1903.— Barnes and McDunnough, 



Check list of the Lepidoptera of Boreal America, No. 4726, 1917. 

 Mctancma aeliaria Walker, List of the lepidopterous insects in the collection of 



the British Museum, vol. 20, p. 260, 1860. 

 Metanema trilinearia Packard, Rep. U. S. Geol. Surv. Terr., vol. 10, p. 542, 1876. 

 Endropiu textrinaria Grote and Robinson, Ann. Lye. Nat. Hist New York, vol. 8, 



p. 449, 1867. 

 Metanema incongruaria Hulst, Ent. Amer., vol. 2, p. 212, 1887. 

 Ellopia (ju< rciromria (Guenee) McDunnough, Check list of the Lepidoptera of 



Canada and the United States of America (Part 1, Macrolepidoptera), No. 



5145, 1938. 



Male. — General color and maculation variable, ranging from a form 

 that is uniformly pale ocherous, with the transverse lines rust-brown 

 and rather distinct, to a form with the ocherous ground color almost 

 obscured by a dense sprinkling of light rust-brown scales, which some- 

 times form irregular patches. Fore wing broad, angular, excavated 

 between the apex and vein 4; subterminal line serrate, uneven. Hind 

 wing produced at vein 4; subterminal line strongly curved outward. 



Alar expanse, 26-38 mm. 



Genitalia (figs. 12, 12A) : Harpe simple, rather broad basally and 

 narrowed apically; uncus slender; gnathos with numerous long, 

 slender spines; anellus somewhat scobinate basally; furca with a patch 

 of spinules at distal end ; aedeagus with an augerlike sclerotized proc- 

 ess distally, this process slightly produced and with a serrate mar- 

 gin ; a large patch of long, slender cornuti on penis. 



Female. — Several types of maculation occur: One similar to the 

 male; a second uniform dull ocherous, sparsely to rather densely 

 sprinkled with testaceous scales; and a third uniform dull ocherous, 

 sprinkled with testaceous scales and with conspicuous patches of 

 fuscous scales on the inner margin of fore wing adjacent to the 



