140 BULLETIN 190, UNITED STATES NATIONAL MUSEUM 



PARANTHRENE TRICINCTA OSLARI, new form 



Plate 26, Figure 159 



Male. — Antennae ochreous, shaded with black on upper parts. Labial 

 palpi pale yellow, black at bases and on sides. Thorax violaceous-black, 

 contrastingly marked yellow at sides posteriorly. Abdomen shiny black 

 with segments 2, 4, 6, and 7 broadly, and 3 and 5 narrowly, banded with 

 yellow. Legs dull yellow, touched with orange. Forewing brown-black 

 mixed with yellow and orange scales, densest on inner margin and basal 

 half. 



Female. — Antennae orange-red, with bluish-black scales above. Ab- 

 domen mostly yellow above and beneath; segments 1, 3, 4, and 5 black 

 anteriorly, segments 2 and 6 all yellow; anal tuft yellow and black mixed, 

 more yellow than black. 



Type.— U.S.N. M. No. 26844. Described from female from Bear 

 Creek, Morrison County, Colo. (Oslar) ; parat)^pe female, San Juan 

 Mountains, Colo. (Oslar) ; and two male paratypes. Chimney Gulch, 

 Golden, Colo. (Oslar). 



Remarks. — The similarity between the North American form tricincta 

 oslari and the form of western Europe, tabaniformis rhingiaeformis 

 Hiibner, points to parallelism in response to comparable climatic condi- 

 tions of two closely related species on widely separated continents. 



The form oslari has been named for Ernest J. Oslar, of Denver, Colo., 

 a pioneer collector who, during a long span of life, has made many con- 

 tributions to our knowledge of the Rocky Mountain insect fauna. 



PARANTHRENE DOLLII DOLLII (Neumoesren) 



Sciapteron dollii Neumoegen, Ent. News, vol. 5, p. 330, 1894. — Beutenmuller, Bull. 



Amer. Mus. Nat. Hist., vol. 8. p. 122, 1896; vol. 9, p. 218, 1897. 

 Memythrtis dollii Beutenmuller, Mem. Amer. Mus. Nat. Hist., vol. 1, pt. 6, p. 252, 



pi. 30, fig. 4 (female), 1901. 

 Paranfhrene dollii McDunnough, Check list of the Lepidoptera of Canada and the 



United States of America, pt. 2, No. 8802, 1939. 



Male. — Antennae robust, broadly bipectinate and strongly dilated at 

 tips, dark ochreous, shaded with black above. Labial palpi rough, rusty 

 red, black at bases and on the sides. Head black, top reddish with a stiff 

 bru.sh black ; face shiny sordid white ; occipital fringe rusty red. Thorax 

 black, prothorax with a collar of flat scales, black, edged with rusty red ; 

 tegula and sides dull brown ; metathorax at the sides with buff and red- 

 dish tufts. Abdomen with segments 1, 2, and 3 black; 4, 5, 6, and 7 

 rufous ; segments 2 and 4 narrowly ringed with pale yellow, segment 3 

 shaded with yellow at lower margin before a very narrow black edge ; 

 segments 5, 6, and 7 also narrowly edged with black; on the underside 

 the banding of all segments more pronounced ; anal tuft short, narrow, 

 sordid brown. Legs pale rufous, femora black. Forewing opaque, dark 

 brown with violaceous and coppery reflections ; a short vitreous streak 

 near wing base above inner margin, which is shaded with red ; underside 



