294 BEUTENMULLER, MONOGRAPH OF THE SESIID^E. 



Sesia culiciformis (Linnd). 



Sphinx culiciformis Linne, Syst. Nat. ioth Edit. 1758, p. 493 ; Clerck. Icones Insect. Rarior. 

 1759, tab. ix, fig. 3. 



Sesia culiciformis Fabricius, Syst. Ent. 1775, p. 549 (in part). Hubner, Tentamen, 1806 (?), 

 p. 1 (restrict, sense). 



Algeria culiciformis Stephens, Brit. Ent. Haust. Vol. I, 1828, p. 143, pi. x, fig. 3. 



Male. — Head, and thorax blue black ; palpi blue black above, orange beneath ; thorax with an 

 orange patch on each side beneath. Abdomen blue black with the fourth segment red above and 

 below ; anal tuft blue black. Legs blue black, tibiae yellowish ; hind femora with a yellowish band. 

 Fore wings transparent with blue black margins and discal mark, orange basally. Underside 

 washed with golden yellow. Hind wings transparent, with narrow, blue black margin ; underside 

 with costa golden yellow. 



Female. — Similar to the male. 



Expanse : Male and female, 21-28 mm. 



Habitat. — Europe and Kodiak, Alaska. 



Very much resembles S. americana, from which it differs by having the fore 

 wings beneath entirely golden yellow and the hind tibiae banded with yellowish 

 brown. In Europe the species lives under the bark of white birch {Be tula alba), 

 plum, and apple. The moth appears in June. 



Sesia tepperi {Hy. Edw.). 



Plate XXXII, Fig 24, Male. 



Pyrrhotamia tepperi Hy. Edwards, Papilio, Vol. I, 1881, p. 203 ; Grote, New Check List N. Am. 



Moths, 1882, p. 12. 

 Sesia tepperi Beutenmuller, Bull. Am. Mus. Nat. Hist. Vol. VIII, 1896, p. 137. 



Male. — Head orange on top, front blue, orbits white ; palpi orange, antennae black. Thorax 

 above and below orange. Abdomen blue black above with the first and second segments and anal 

 tuft orange ; underside of abdomen wholly orange. Legs orange and blue. Fore wings narrow, 

 metallic blue black with the transparent area small ; underside orange at the base. Hind wings 

 transparent, with the blue black outer margin broadest at the apex ; discal mark small, black ; un- 

 derside orange at the base. 



Expanse : 23 mm. 



Habitat. — Georgia. 



Type : One male. Coll. F. Tepper, Agricul. College, Michigan. 



Only the unique type is known to exist in collections. It is a very distinct 

 species and may be known by the narrow wings, orange thorax, and blue abdomen 

 with the first two segments and anal tuft orange. Life-history not known. 



Sesia acerni {Clemens). 



Plate XXXI, Fig. 24, Female. 



Trochilium acerni Clemens, Proc. Ac. Sc. Phil, i860, p. 14; Morris, Synop. Lepid. N. Am. 1862, 



p. 330 ; Prairie Farm. 1869, p. 22. 

 }Egeria acerni Riley, 6th Rep. Nox. Ins. Mo. 1874, p. 107 ; Thomas, 1st Rep. Nox. Ins. 111. 1876 



(1878), p. 40; ibid. 2nd Rep. 1877 (1878), p. 173; Emily Smith, Shade Trees and In- 



