BAGWORM MOTHS OF THE WESTERN HEMISPHERE 135 



no. 9519, 1939.— Tietz, Lep. Penn., p. 156, 195?.— Metcalf, Flint, and Metcalf, 

 Destructive and Useful Insects, p. 771, 1951. 



Occeticus [sic] coniferaruni Packard, Proc. Ent. Soc. Phila., vol. 3, p. 351, 1864. 

 — Grote, Proc. Ent. Soc. Phila., vol. 5, p. 248, 1865. 



Thyridopteryx coniferaruni (Packard) Kirby, Cat. Lep., vol. 1, p. 501, 1892 

 (synonym of T. ephemerae for mis). — Dyar, U.S. Nat. Mus. Bull. 52, no. 4065, 

 1902 [li!03].— Dalla Torre and Strand, Lep., Cat., pars 34, p. 184, 1929.— 

 Gaede in Scitz, Macrolep. World, vol. 6, p. 1181, 1936. — McDunnough, Check 

 List Lep. Canada and USA, pt. 2, no. 9519, 1939. 



Thyridopteryx pallidovenala Grossbeck, Bull. Amer. Mus. Nat. Hist., vol. 37, p. 

 104, 1917 (new synonymy). — Dalla Torre and Strand, Lep. Cat., pars 34, 

 p. 185, 1929.— Gaede in Seitz, Macrolep. World, vol. 6, p. 1182, 1936.— 

 McDunnough, Check List Lep. Canada and USA, pt. 2, no. 9519, 1, 1939. 



Thyridopteryx vernaUs Jones, Ent. News, vol. 34, p. 100, pis. 3-4, figs. 11, 12, 1923 

 (new synonymy). — Jones and Parks Tex. Agric. Exp. Sta. Bull. 382, p. 27, 

 figs. 15, 20, 1928.— Gaede in Seitz, Macrolep. World, vol. 6, p. 1181, pi. 169d, 

 1936. — McDunnough, Check List Lep. Canada and USA, pt. 2, no. 9520, 

 1939. 



Male. — (Fig. 59.) Body vesture fuscous. Antennae with 28-33 

 segments; basal third with segments broader than long, beyond that 

 segments become lengthened. Meso- and metathoracic tibiae usually 

 with pair of apical spurs, sometimes with shorter member of pair 

 absent. 



Wings in general almost devoid of scales except for concentrations 

 along costal margin and anal area of both wings; membrane trans- 

 parent; venation extremely variable. Fore wing with apex produced, 

 termen strongly curved, tornus indistinct or absent; scales (fig. 360) 

 of cell 2A, for most part, long, slender with acute apices; a few bidentate 

 scales sometimes present, especially toward base of cell. Wing 

 expanse 17.5-36 mm. 



Male genitalia. — -(Fig 294.) As described for genus. 



Female. — -(Fig. 144.) Length 20-24 mm. As described for genus. 



Female genitalia. — -(Figs. 316, 317.) 



Case.— (Figs. 116-118.) Length 30-50 mm.; diameter 10-15 mm. 

 Elliptical, greatest diameter usually at or near middle; ornamentation 

 quite variable, dependent upon food plant, never with external sheet 

 of silk; when sticks incorporated in architecture, they are applied 

 longitudinally and usually are of moderate length (15 mm. or less), 

 occasionally may be longer; on cedar, cases frequently adorned with 

 fruit of host. 



Type. — Lost (Sphinx ephemeraeformis and Oiceticus conrferarum); 

 in the American Museum of Natural History {Thyridopteryx pallido- 

 venata); United States National Museum (T. vernalis). 



Type locality. — Great Britain(?) {S. ephemeraejormis)] "Middle 

 States" {0. coniferarum) ; Fort Myers, Florida (T. pallidovenata) ; 

 Seaford, Sussex County, Delaware (T. vernalis). 



