334 PROCEEDINGS OF THE NATIONAL MUSEUM vol. m 



22. Wing with modified wing pattern as in argentiniensis. Abdominal tergites in 



both sexes with four pairs of lateral black spots; third and fourth tergites 

 of male and third to sixth tergites of female each with a pair of lateral 

 black spots (the pair on third tergite may be absent). Lateral brown 

 spots of postscutellum sometimes absent. Eyes in profile 1.6-1.7 times 

 as high as wide. Postpedicel long, 1.6-1.7 times as long as wide. Fifth 

 abdominal tergite of male unusually long, 2.0-2.2 times as long as fourth. 

 Ovipositor sheath slightly longer than basally wide; thorax only 1.9-2.0 

 times as long as sheath. Apical part of ovipositor lanceolate in dorsal 

 view, with apex somewhat delimited in lateral view. 3.6-4.1 mm. St. 

 Vincent (island); Paraguay; Argentina: C6rdoba, Santa Fe, Tucumdn, 

 Jujuy, Chaco, Misiones cf 9 incompleta (Williston) (p. 362) 



— Wing with the usual pattern 23 



23. Only median third of mesonotum dusted densely with white pruinosity, 



the lateral thirds shining, bare. Abdomen of male with 10 pairs of lateral 

 black spots, second to fourth tergites each with a pair; fifth tergite of 

 male 1.7 times as long as fourth. Eyes in profile 1.7 times as high as wide. 

 Postpedical short, only 1.2 times as long as wide. Inferior mesopleural 

 bristle absent. Dorsocentral bristle inserted in anterior fifth of distance 

 between suture and supra-alar bristles. 3,6 mm. Chile. 



cT unifascia Hendel (p. 408) 



— Mesonotum normally dusted, except for a narrow hind margin. Preabdomen 



with lateral black spots similar to incompleta. Black spot on pleuroter- 

 gites sometimes absent. Eyes in profile twice as high as wide. Post- 

 pedicel 1.4 times as long as wide. Fifth abdominal tergite of male short, 

 only 1.3 times as long as fourth. Ovipositor sheath almost as long as 

 width at base; thorax 2.5-2.8 times as long as wide. Apical part of ovi- 

 positor very narrowly lanceolate in dorsal view, with apex somewhat 

 delimited in lateral view. Inferior mesopleural bristle distinctly shorter 

 and much weaker than superior. Dorsocentral pair inserted in anterior 

 third of distance between suture and supra-alar bristles. 3.8-4.8 mm. 

 Brazil; Argentina: Tucumdn, Entre Rfos. 



cf 9 costalimai, Blanchard (MS.) new species (p. 344) 



24. Mesonotum wholly bright reddish brown dusted, without shining bare hind 



margin in front of scutellum and with the following special black mark- 

 ings: two lateral black vittae not attaining the anterior margin nor 

 scutellar suture, a pair of circular black spots each between presutural 

 and anterior notopleural bristles and the usual black spots on hind region 

 which are elongated toward the transverse suture. Mediotergite shining 

 dark brown, pleura yellowish brown, inferior part of sternopleuron dark 

 brown. Abdomen with three pairs of lateral black spots. 10 mm. 

 Brazil cf quadrivittata Lutz and Lima 



— Mesonotum normally dusted with posterior margin bare and shining, without 



black vittae or black spots on anterior region, (conjuncta group) . . 25 



25. Apical band of wing separated from costa by a narrow hyaline border. Ab- 



domen with four pairs of lateral black spots, second to fifth tergites 

 each with a pair. Second basal cell almost entirely hyaline. 5 mm. 

 Peril cf titschacki Hering 



— Apical band not separated from costa, submarginal cell without hyaline spot. 



Bands of wing unusually broad, reddish yellow in color. Abdomen with 

 only two pairs of lateral black spots on fifth tergite. Postpedicel ap- 

 proximately 1.5 times as long as wide. Second basal cell yellow ,with an 

 anteromedian hyaline spot. 6.5 mm. Peru; Bolivia 



cf conjuncta Hendel 



