l6o ENTOMOLOGICAL NEWS. fjune, '19 



Odonata Zygoptera from Guatemala 



Collected by Messrs. William Schaus and John T. Barnes. 

 By Philip P. Calvert, University of Pennsylvania, Phila- 

 delphia, Pa. 

 This paper is essentially a continuation of that published in 

 the News for February and March, 1919, to which reference 

 should be made for general information concerning localities 

 visited by the collectors. 



Calopteryginae. 



Hetaerina cruentata (Rambur). Chejel, June, 1917, 1 $. San 

 Felipe, February, 1 $ . 



I postpone until a later occasion a consideration of the dif- 

 ferences stated by Dr. Ris (Archiv. f. Naturges., 1916, A, 9, 

 1918) to exist between the females of cruentata and caja. 



Hetaerina tricolor (Burmeister), Cayuga, bananas, October 29, 

 2 9 (1 teneral), November 23, 1 $. Quirigua, February 21, 1 

 teneral $\ forest, February 22, 1 teneral $, March 30, 1 $. All 

 these specimens have well-developed pterostigmata. 



Hetaerina titia (Drury). Cayuga, April 20, 1 $ ; edge of forest, 

 April 30, 1 9 ; forest. May 3, 1 $ , May 8, 1 9 ; in banana trail, 

 May 25, 1917, 1 9 ; forest stream, May 29, 1 $ ; forest, June 1, first 

 good rain yesterday, 1 9 , "entirely black, white spots [= pterostig- 

 mata] on tips"; forest, August 14, 1 teneral $ ; August 29, 1 

 $. Quirigua, forest, March 30, 1 $. The Cayuga male of Au- 

 gust 29 has no pterostigma on any wing; all the other individuals 

 of both sexes have this distinctly developed. 



Mr. Williamson (Ent. News, xxiii, pp. 98-101, March, 1912) 

 has come to the conclusion "that in the United States one vari- 

 able species hitherto known as Hetaerina titia and H. tricolor 

 exists." His evidence, which I am quite disposed to accept, 

 refers only to the males. If these two nominal species are in 

 reality variants of but one, we should find gradations from the 

 females of tricolor to females of titia. In a key to the females 

 of Hetaerina in the Biologia volume, page 21, I separated tri- 

 color from a number of other species as follows: 

 "b. Metallic green on either side of the thoracic dorsum (mesepister- 

 num) divided into two spots, the anterior contiguous to the mid- 

 dorsal carina, the posterior separated from it by buff or brown, 



tricolor 



% 



