BEUTENMULLER, MONOGRAPH OF THE SESIID^E. 



231 



ness for their final transformation, they gradually work their way through the 

 outer packing of their galleries and the bark, project their anterior segments to 

 at least one half or more of the entire pupal length through the opening, and 

 hold themselves securely during the escape of the moth. 



Lintner in 1885 (347) pointed out the sexual characters of the pupae and 

 found them to be similar to those 

 existing in the Cossidae. This 

 feature consists (Fig. 7) in the 

 male having two rows of spines 

 on each of the first to sixth ab- 

 dominal segments inclusive, while 

 in the female there are only two 



rows of spines on the first to fifth segments inclusive ; in other words, the male 

 has two rows of spines on the sixth segment and the female one row. Lintner's 

 observations were based on the pupae of Sanninoidea exitiosa and Sesia tipuli- 

 formis, and he was not able to say if this feature extended throughout the entire 

 family owing to the limited amount of material at hand. After an examination 

 of the pupae of Algeria apiformis, Memythrus robiniez, M. tricinctus, Parkar- 

 monia pint, Podosesia syringes, Alcathoe caudata, Vespamima sequoice, Sesia rulilans, 

 S. acerni, S. scitula, S. pictipes, S. sapygeeformis, and 61 pyri, I can assert that 

 the characters observed by Lintner are present in the foregoing named 

 species. 



Male Pupa and last three segments of female Pupa. 



Descriptions of Genera and Species. 



Melittia Hiibner. 



Fig. 8. 



Melittia Hubner, Verz. bek. Schmett. 1816, p. 128. 



Palpi upturned, clothed with short hairs above and below. Antennae with fascicles of cilia in 

 the male, clavate, pointed at the tip, simple in the female. Hind tibiae and tarsi thickly 

 clothed with very long hairs. Fore wings with 12 veins. R 4 and R 5 on a stalk, 2d A 

 very short. Hind wings with 9 veins ; M 3 from middle of cell ; Cuj from end of cell. 

 Abdomen cylindrical, tapering toward the apex. Anal tuft very slight, similar in both sexes. 



Type : Melittia satyriniformis Hubner. 



This genus may be at once recognized by the robust form of the species 

 and by their having the hind legs thickly clothed with very long hairs. The 

 range of distribution of the genus is very considerable, being found in North and 

 South America, Africa, and in the Oriental Region to Celebes and Gilolo. Some 

 of the exotic species have the fore wings partly transparent instead of entirely 

 opaque. 



