. Brigham Young University science bulletin. Biology -- Periodicals. MlRIDAE OF THE NEVADA TEST SlTE 185 Genus Irbisia Reuter Key to the Species 1. Length of antennal segment II not exceeding width of pronotum at base 2 Length of antennal segment II distinedy greater than width of pronotum at base; eyes subpedunculate; length of antennal segment I greater than width of vertex; length mm pacifica (Uhl.) 2. Legs with some pale color on coxae or tibiae 3 Legs uniformly black; length mm nigripes Kngt. 3. Length of antennal segment I not equal to width of vertex 4 Length of antennal seg
. Brigham Young University science bulletin. Biology -- Periodicals. MlRIDAE OF THE NEVADA TEST SlTE 185 Genus Irbisia Reuter Key to the Species 1. Length of antennal segment II not exceeding width of pronotum at base 2 Length of antennal segment II distinedy greater than width of pronotum at base; eyes subpedunculate; length of antennal segment I greater than width of vertex; length mm pacifica (Uhl.) 2. Legs with some pale color on coxae or tibiae 3 Legs uniformly black; length mm nigripes Kngt. 3. Length of antennal segment I not equal to width of vertex 4 Length of antennal segment I subequal to width of vertex, ( 9 ) about .04 mm. less; length ( <$) mm, ( 9 ) mm elongata Kngt. 4. Coxae pallid on apical half; rostrum reaching upon posterior coxae, yellowish; length mm brachijcera (Uhl.) Coxae and rostrum black, rostrum reaching upon apices of hind coxae; female brachypterous, costal margin strongly arcuate; length ( 9 ) mm, ( cf ) mm shulli Kngt. Irbisia pacifica (Uhler) Rhopalotomus Uhler, 1872:415. Thyrillus pacificus Uhler, 1894:267. Irbisia pacificus Van Duzee, 1914:24. Irbisia pacificus Slater, 1950:36, PI. 2, Fig. 20. This species is known from California, Ne- vada, Utah, Idaho, Montana, and Washington. The species was not taken at the test site, but this is not surprising as so little collecting specifically directed towards the mirids has been done there, especially in early spring and late fall, and at most higher elevations. Irbisia shulli Knight Irbisia shulli Knight, 1941:75. This species is known from Idaho, Oregon, and Washington. Utah, Irbisia brachyccra (Uhler) Rhopalotomus brachycerus Uhler, 1872:416. Thyrillus brachycerus Uhler, 1895:39. Irbisia arcuata Van Duzee, 1921:148, n. sp. Irbisia brachyccra Knight, 1941:79. Known from Utah, Colorado, Idaho, Mon- tana, Wyoming, Nebraska, and North Dakota. This species has been reported from California, but the writer has been unable to verify this ear
Size: 1234px × 2025px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorbrighamyounguniversity, bookcentury1900, bookcollectio
