28 SOUTH AMERICAN TIPULIDAE 



basal portion blackish around the insertions of the bristles; remaining segments 

 dark at the base, toward the tip of the organ the entire segment is darkened. 

 Head gray, a median stripe and the region adjoining the eye dark brown. 



Thoracic dorsum light gray with a narrow dark brown median stripe running 

 from the pronotum to the end of the mesonotal postnotum ; on either side of this 

 vitta on the praescutum is a light brownish gray stripe, darkest in front; lateral 

 stripes shortened but distinct; numerous dark brown spots, some being con- 

 fluent, on the interspaces of the praescutum; scutum, scutellum and postnotum 

 with the ground color light gray. Pleura very pale whitish gray. Halterea 

 Ught yellow, the knob darkened. Legs with the coxae pale grayish white; 

 trochanters dull yellow; femora dull yellow passing into brown beyond the 

 middle, the tip dark brown, a broad yellow subapical ring; tibiae brownish 

 yellow, tipped with brown; tarsal segments 1 and 2 yellowish bro-wTi, the tips 

 brown, segments 3 to 5 dark brown. Wings with the costal cell yellowish; 

 remainder of the wings whitish, gray and brown; the white markings are as 

 follows: a large band beyond the stigma including the end of cell 2nd Ri, basal 

 half of ^2, portions of Rs and Ri near the base, most of 1st M2, tip of cell M and 

 base of cell Ms] cell 7?5 largely pale; cell R similar excepting isolated gray 

 blotches; cell M and large portions of cells Cu, 1st A and 2nd A whitish; the 

 stigmal area is dark brown; the tip of the wing, the cord, the base of Rs and 

 most of the cells of the wing contain gray suffusions. Venation: (plate III, 

 fig. 3) R2 tends to be swung cephalad at its tip as in the monilifera grouj). 



Abdominal tergites light brown, a distinct dark brown dorsal line and the 

 lateral margins of the segments dark brown; sternites brownish; ovipositor 

 with the tergal valves very slender and delicate, the tip scarsely expanded; 

 sternal valves shorter and a little higher. 



Habitat.— Peru. Holotype, 9 , Matucana, Peru, altitude 7788 

 feet, July 14, 1914 (Parish coll.). 



The specific name is that of the native Indian nation of 

 Peru. 



This interesting species is readily separable by the gray thorax 

 with the prominent dorso-median brown vitta and the gray and 

 white diversified wings. The subterminal yellow annulus to the 

 femora is a character not found in the near relatives of this 

 insect. 



Tipula carizona Alexander 



1913. Tipula carizona Alexander, Journ. N. Y. Ent. Soc, xxi, p. 208, pi. 7, 

 fig. 7 (wing), figs. 2 to 4 (genitalia). 



A male from Matucana, Peru, altitude 7788 feet, July 14, 1914, 

 collected by Parish; another male from Huancayo, Peru, alti- 

 tude 10,636 feet on June 27, 1914, Parish, collector. 



This species is quite widely distributed in the Andes; it differs 

 from Van der Wulp's description of ornaticornis by the light gray 

 color of the thorax instead of opaque rufous. 



