10 BULLETIN 190, UNITED STATES NATIONAL MUSEUM 



Venation : Forewing with veins 7 and 8 stalked ; 7 to apex ; 10 and 1 1 

 separate. Hindwing with veins 3 and 4 short-stalked. Abdomen slender ; 

 anal tuft of male long, wedge-shaped, of female short, blunt. 



Male genitalia of the Synanthedon type ; anellus with long, thin, lateral 

 processes, aedeagus forked at tip ; cornuti numerous ; sacculus ridge with a 

 slightly curved row of flat, forked scales. Female genitalia with ductus 

 thickened for a short space beyond ostium ; no signum. 



Critical examination, based on ample material, shows no structural dif- 

 ferences to justify specific separation of the forms and races of Sannmoidea 

 exitiosa on the North American Continent. Structures, including venation 

 and genitalia, conform, and dififerences in pattern and coloration indicate 

 only races and variations of one species. There is so much overlapping 

 that clean-cut divisions cannot be drawn. 



SANNINOIDEA EXITIOSA EXITIOSA (Say) 



Plate 1, Figure 2 ; Plate 4, Figures 29, 29a ; Plate 13, Figure 59 



Aegeria exitiosa Say, Journ. Acad. Nat. Sci. Philadelphia, vol. 3, p. 216, 1823. — 



Butler, Ann. Mag. Nat. Hist., ser. 4, vol. 14, p. 408, 1874. 

 Apis persica Thomas, Amer. Farmer, vol. 6, No. 5, p. 37, 1824. 

 Paranthrene pepsidiformis Hubner, Zutrage zur Sammlung exotischer Schmetter- 



linge, vol. 3. p. 32, pi. 92, figs. 533, 534 1825. 

 Aegeria persicae Harris, New England Farmer, vol. 5, p. 33, 1826. 

 Trochiliiim exitiosum Fitch, Third report on the noxious insects of the State of 



New York, 1856, p. 356, 1857. 

 Sesia xiphiaeformis Boisduval. Histoire nadirelle des insectes : Species general des 



lepidopteres heteroceres, vol. 1, p. 409, 1874. 

 Aegeria xiphiaeformis Hy. Edwards, Ent. Amer., vol. 3, p. 224, 1888. 

 Sanninoidea exitiosa Beutenmuller, Bull. Amer. Mus. Nat. Hist., vol. 8, p. 126, 



1896; Mem. Amer. Mus. Nat. Hist., vol. 1, pt. 6, p. 266, 1901.— McDunnough, 



Check list of the Lepidoptera of Canada and the United States of America, pt. 2, 



No. 8691, 1939.— Snapp and Thompson, U. S. Dept. Agr. Techn. Bull. 854, 1943. 



Male. — Antennae black or blue-black, finely ciliate on inner sides. Palpi 

 yellow beneath, black above. Head black, interspersed with yellow scales 

 between the antennae and posterior parts. Collar yellow. Thorax black, 

 with two longitudinal yellow stripes at wing base. Wings hyaline, 

 nervures and margins blue-black; forewing with transverse mark and 

 margins narrow. Legs black, with or without bluish reflections ; posterior 

 tibia narrowly banded yellow at the joints. Abdomen black, usually with 

 steel blue or coppery reflections, with narrow, yellow bands on all seg- 

 ments or banded only in part, the markings on basal and fourth segments 

 being most dependable ; anal tuft hastated or wedge-shaped, edged with 

 white at the sides. 



Female. — Antennae, palpi, head, thorax, and legs black, violaceous. 

 Abdomen metallic black with the fourth segment orange above and 

 beneath. Forewing entirely opalescent, black, violaceoiLS. Hindwing 



