174 BULLETIN 190, UNITED STATES NATIONAL MUSEUM 



MULLER, Bull. Amer. Mus. Nat. Hist., vol. 8, p. 118, 1896; vol. 9, p. 218, 1897; 



vol. 12, p. 158, 1899. 

 Setia apiformis Meigen, Systematische Beschreibung der Europaischen Schmetter- 



linge, vol. 2, p. 103, 1830. 

 Trochilia apiformis Heinemann, Die Schmetterlinge Deutschlands und der Schweiz 



systematisch Bearbeitet, pt. 1, p. 120, 1859. 



Male. — Antennae clavate, black, pectinations broad, ferruginous. Labial 

 palpus with a strong brush, lemon yellow, touched with black on second 

 joint above. Head with a rough brush on top yellow ; eyes broadly edged 

 with white on inner sides ; face blackish brown ; occipital fringe narrow 

 and black above, broader and yellow at the sides. Collar broad, rusty 

 black, anterior part at the sides yellow. Thorax brownish black ; a large 

 yellow, broadly triangular lateral patch on prothorax ; another smaller, 

 lateral patch on metathorax, deeper yellow or pale orange, sometimes 

 connected with the patch on prothorax by a thin, yellowish line. Abdo- 

 men yellow ; segment 1 black ; segment 2 black, its anterior edge yellow ; 

 segment 3 yellow with posterior edge black ; segment 4 orange-yellow and 

 broadly brown-black on posterior part; segments 5, 6, and 7 yellow, 

 narrowly edged with black ; beneath same as above ; anal tuft short, 

 rounded, yellow, deepening into orange at tip. Legs brown and yellow ; 

 coxae of front legs with a broad brush, brown on inner side and yellow 

 outwardly ; femora of hindlegs pale yellow and whitish ; posterior tibia 

 rough, black at knee, brown on outer side and yellow on inner side ; tarsi 

 brownish yellow. Forewing transparent ; costa, cubitus, and inner margin 

 light brown ; discal mark moderate, with purplish reflections ; outer margin 

 and fringes dark brown ; wing base black with a yellow spot ; underside 

 more yellow basally. Hindwing transparent, narrowly margined with 

 brown black ; discal mark inconspicuous or absent. 



Female. — Larger and stouter. Antennae clavate, finely ciliate. Abdo- 

 men with segment 4 entirely lustrous coppery black; anal tuft greatly 

 reduced, tip of abdomen smooth, rounded. Otherwise like the male. 



Expanse : Male 34 to 43 mm., female 40 to 44 mm. 



Distribution. — Europe ; New York, Connecticut, New Jersey, Pennsyl- 

 vania. 



Type. — Location unknown. 



Remarks. — This European moth, popularly well known as the hornet 

 moth, with reference to its deceptive resemblance to the large hornet 

 Vespa crabro, appeared on this continent during the latter half of the nine- 

 teenth century. In Europe it has been the subject of innumerable reports 

 and publications, beginning with an illustration in 1685. Of these only a 

 few are cited to show the sequence in the nomenclature of the species. 



Hoboken, N. J., is the probable port of entry into the United States. 

 Collectors of Lepidoptera exhibited specimens captured there at meetings 

 of the Brooklyn Entomological Society earlier than 1880. John B. 

 Smith, in his "Catalogue of Insects Found in New Jersey," 1890, listed 



