

Vol. XLV. LONDON, FEBRUARY, 1913 No. 2 



FURTHER NOTES ON ALBERTA LEPIDOPTERA, WITH 

 DESCRIPTION OF A NEW SPECIES. 



BY F. H. WOLLEY DOD, MIDNAPORE, ALTA. 

 (Continued from Vol. XLIV., page 39.) 



299. Mamestra mutata, sp. nov. — Closely allied to. frifolii 

 Rott., by comparison with which it is best described. Ground 

 colour paler than in trifolii, with less irroration; orbicular elongate, 

 oblique, sometimes produced to a point anteriorly, outlined in 

 blackish, with pale annulus and dark centre. In trifolii it is round 

 or nearly so, with the pale annulus less contrasting. Reniform 

 much narrower in upper half than lower, the upper extremity the 

 shape of an inverted V with the apex curved slightly outwards. 

 A pale annulus is traceable round the reniform, but is conspicuous 

 only as the strokes, particularly the outer stroke, of this V. In 

 trifolii the reniform is kidney-shaped, symmetrical, and the annulus 

 less contrasting superiorly. The subterminal line is paler and 

 more contrasting than in trifolii, and the W is rather deeper, and 

 usually preceded by black dentate marks. Fringes more contrast- 

 ingly cut with pale than in trifolii. On the underside, on both 

 primaries and secondaries, there is a smoky discal dot at the end 

 of the cell in both species. In trifolii these dots are centred by a 

 fine whitish line on the cross-vein. In mutata this line is absent. 

 Size of trifolii, but apices rather more acute. 



Described from 6 cf s and 10 9 s. Calgary, Alta. (4 pair, by 

 the author, June 22nd-Aug. 9th); Miniota, Cartwright, Winni- 

 peg, Man. (Icf , 3 9 s, Dennis, Heath, and Hanham, Aug. 3rd- 

 Sept. 20th); Stockton and Provo, Utah, (2 9 s, Spalding, Aug 5th 

 and 27th); and Prescott, Ariz. (1 pair, Kunze, Sept. 8th and 10th). 



Type, cf, Calgary, in collection of the author. 



This is the albifusa of Smith (Ent. News, XXI, 360, Oct. 1910,) 

 in part, but is not the albifusa of Walker. The character of the 

 orbicular and reniform, and of the discal spots beneath will best 

 serve to distinguish mutata from trifolii and its var. albifusa, to 



February, 1913 



