TEtPHiENA. 



623 



Sect. I. {Ahagrotis). Antennje of male serrate and fasciculate. 



*1075. TriphsBna erratica. 



Agrotis erratica, Smith, Trans. Am. Ent. Soc. xvii. p. 41 (1890) ; id Cat 

 Noct. N. Am. p. 60. i v / . ■ 



S . Dull ashen grey to brick-red ; palpi blackish at sides ; head 

 and thorax pencilled with brown, the tegnlse whitish at tips. 

 Fore wing irrorated with dark brown; traces of a waved subbasal 

 line from costa to submedian fold ; an indistinct oblique slightly 

 sinuous antemedial line ; orbicular and reniform pale rufous with 

 grey annuli, the former small, oblique, the latter with its lower end 



Fig. 11.3. — Triphcsna erratica, (^ . i. 



filled in with blackish ; the postmedial line bent outwards below 

 costa, incurved in discal fold and below vein 4, with a series of dark 

 points on the veins beyond it ; subterminal line whitish, defined b}' 

 brown on inner side, slightly excurved at vein 7 and at middle ; 

 traces of a terminal series of points ; the inner margin and a fine 

 line at base of cilia luteous ; in the redder specimens the markings 

 are almost obsolete. Hind wing pale grey-brown ; the cilia ochreous, 

 white at tips ; underside with dark discoidal point and curved 

 postmedial line. 



Uab. U.S.A., California, Sierra ^^evada. E.vi). 38 millim. 



Sect. II. ( Triphcsna). Antennte of male ciliated. 



A. Hind wing orange. 



a. Fore wing with black bar or spot on costal area 

 before subterminal line. 

 a^. Hind wing with black discoidal lunule. 



a'^. Fore wing with white patch beyond the 



renifoi-m ". efflorescens. 



Ir. Fore wing without white patch beyond the 



reniform semiherbida. 



h^. Hind wing without black discoidal lunule fimbria. 



h. Fore wing without black bar or spot on costal area 

 before subterminal line. 



a^ . Tegulse white except at tips janthina. 



b'^. Tegulaj concolorous interjecta. 



B. Hind wing not orange. 



a. Head and tegulie dark red-brown, contrasting. 

 a^. Pectus and ventral surface of abdomen tinged 



with red-brown rufipectus. 



b^. Pectus and ventral surface of abdomen not 



tinged with red-brown brunneicoUis. 



