LAWSON: KANSAS CICADID^. 349 



Tibicinoides hesperius (Uhl.). 



(PI. xxiii, figs. 3-4: pi. xxv, fig. 9: pi. xxvi, fig. 18; pi. xxvii, fig. 14.) 

 Cicada hesperia Uhl., Bui. U. S. Geol. Geog. Surv., i, p. 342, 1876. 

 Tibicen hesperia Uhl., Trans. Md. Acad. Sei., i, p. 161, 1892. 

 Tibicina/ lienperia Dist., Cat. Homop., Cicadidse, p. 125, 1906. 

 Tibicinoides hesperius Tan D.. Jl. X. Y. Ent. Soc, xxiii, pp. 27, 43, 1915. 

 Tibicinoides hesperius Van D., Cat. Heniip. X. A., p. 504, 1917. 

 Okanagana hesj.eria Davis, Jl. N. Y. Ent. Soc, xxvii, p. 218, 1919. 



A rather small honey-yellow and black species with the wings clouded 

 basally and strongly marked with reddish or orange. The specimens at 

 hand measure from 19 to 21 mm. 



Color: Head black, marked with yellowish as follows: The antennal 

 ledges, a large median elliptical spot on upper portion of front, often 

 three spots at base of front, and a median line caudad of median ocellus. 

 Pronotum black, bordered entirely with a narrow yellow collar, with 

 yellowish markings in grooves and on lateral parts. Mesonotum black, 

 marked with yellowish as follows : Tips of outer arms of W and its bases, 

 the extreme lateral margins, and cephalad of the black-spotted anterior 

 arms of the light cruciform elevation. The metanotum is mostly yellowish. 

 Abdominal terga mostly yellowish, the first two segments darker and 

 with median and lateral darker lines on all the segments. Sometimes 

 the abdomen is entirely black with only the posterior margins yello\\'ish. 

 The wings have the costal margin yellowish up to the tip of the radial 

 cell, otherwise the veins are brownish to black. Usually the veins are 

 heavily infuscated up to the marginal cells, giving the basal portion a 

 brownish color. The basal areoles of the fore wings are heavily clouded 

 with brown. The flaps of both wings are reddish or orange as are 

 other parts of the base of the hind Avings. Beneath, the insect is honey- 

 yellow, strongly marked with black, the abdomen being lighter than 

 the other parts. The legs are so heavily marked with black as to appear 

 nearly entirely dark. 



Form: The following are the measurements in millimeters of the 

 specimens at hand : 



Length of body 19 to 21 



Width of head 6 . 5 to 7.5 



Expanse of fore wings 51 to 53 



Greatest width of fore wing 7.5 to 9 



Greatest ^vidth of operculum 3 



Greatest length of operculum 2.5 



The opercula are broader than long, widest at the base, then suddenly 

 narrowed by the excavation of the lateral margin, the obtuse apex point- 

 ing mesad. The nodal furrow of the fore wings is very marked, forming 

 a distinct transverse V with its arms vddely separated. 



Genitalia: The supra-anal plate of the male is very slightly but dis- 

 tinctly emarginate ^)osteriorly. The uncus, viewed laterally, is widest 

 near the base, the apex having a distinct downward hook due to a ventral 

 preapical rounded incision. Viewed caudally it narrows apically and 

 shows the lower margin to be distinctly emarginate. The ventral piece 

 has its arms separated by a \vide rounded incision and their apices are 



