4 PROCEEDINGS OF THE NATIONAL. MUSEUM vol. 80 



SPATHIMEIGENIA SPINIGERA Townscnd 



Spathimelgenia spinigera Townsend, Proc, Biol. Soc. Washington, vol. 18, p. 19, 

 1915.— Greene, Proc. Eut. Soc. Washington, vol. 23, p. 42, 1921 ; Proc. U. S. 

 Nat. Mils., vol. 60, p. 11, fig. 90, 1922. — Middleton, Journ. Agr. Res., vol. 20, 

 p. 757, 1921.— Johnson, List of the Diptera of New England, p. 186, 1925.— 

 CuRBAN, Can. Ent., vol. 62, p. 246, 1930. 



Adnwiitia demyhis Walkek (misidentifled) Coquxllett, Revision of the Tachi- 

 nidae of America north of Mexico, pp. 9, 53, 1897. — Johnson, in Catalogue 

 of the insects of New Jersey, p. 668, 1899; 1910, p. 776. — Townsend, Proc. 

 Ent. Soc. Washington, vol. 14, p. 165, 1912; Journ. New York Ent. Soc, 

 vol. 21, p. 304, 1913. 



Hyperecteina demylus Walkek (misidentifled) Smith, Proc. Ent. Soc. Wash- 

 ington, vol. 14, p. 126, 1912.— Johnson, Diptera of Florida, p. 70, 1913. 



Masicera demylus Walkek (misidentifled) Johnson, Diptera of Florida, p. 332, 

 1895. 



The description has been given in part under the generic charac- 

 ters. The legs are usually red, but tend toward brown in some speci- 

 mens and are black in a few. The pollen of the parafrontals, para- 

 facials, cheeks, and posterior orbit is golden. In the male the abdo- 

 men is considerably flattened in good specimens and is more or less 

 reddish at the sides, more so ventrally. The grayish pollen extends 

 from the base beyond the middle on segments 2 and 3, and almost 

 to tip in segment 4, which is red apically. The female has the 

 apical third of the fourth abdominal segment and all the genital 

 structures red; the keel has a strong double row of short, stout 

 spines, beginning on the second segment and continuing well on the 

 fourth. 



The nearest related form is mexicana, under which I liaA^e dis- 

 cussed the rather slight differences. 



The National Museum has 10 males and 12 females of spinigera, 

 with the following data (the first two rearings were published by 

 Coquillett, 189T, p. 9, and those by Rohwer, Middleton, and Knull by 

 Greene, 1921, p. 42) : 



One male and one female reared from Neodiprlon abhoftii Leach, 

 collected in Virginia near Washington, D. C, by E. A. Schwarz ; the 

 female of these is the one bearing Coquillett's label '■'•Admontla 

 demylus Wlk.," which was designated by Townsend as the type of 

 spinigera. 



One male reared from Neodiprion lecontei Fitch, taken in Vir- 

 ginia near Washington, D. C, by Theodor Pergande. 



Three males and one female reared from the same host and one 

 male reared from Neodiprion sp., all collected at Reading, Pa., by 

 S. A. Rohwer. 



One female from the same host, collected at Linglestown, Pa., by 

 William Middleton. 



