Proceedings of the United States National Museum . Ml! Figure 2.—Explanation on facing 477119—59- 18 PROCEEDINGS OF THE NATIONAL MUSEUM vol. no a maximum of ; for the males the average is , the maximmn The aedeagus of the shorter-winged of the two males is normalfor bilituratus bilituratus, and the cercus is comparatively other male, with a wider cercus (fig. 7,g), has the dorsal valve ofthe aedeagus rather irregular along the lateroanterior margin, butwithout any indication of spretus. A male with a similarly abnormaldorsal valve was taken in Flathead Co., Mont
Proceedings of the United States National Museum . Ml! Figure 2.—Explanation on facing 477119—59- 18 PROCEEDINGS OF THE NATIONAL MUSEUM vol. no a maximum of ; for the males the average is , the maximmn The aedeagus of the shorter-winged of the two males is normalfor bilituratus bilituratus, and the cercus is comparatively other male, with a wider cercus (fig. 7,g), has the dorsal valve ofthe aedeagus rather irregular along the lateroanterior margin, butwithout any indication of spretus. A male with a similarly abnormaldorsal valve was taken in Flathead Co., Mont., July 8, 1917, and itstegmina exceed the hind femora by mm. Rehn (1952) noted theconsiderable variation shown by Alaskan specimens. The foldedtegmina of some individuals examined by him scarcely surpassed theapices of hind femora, while those of other individuals exceeded thefemora by a distance about equal to pronotal length. Rehn and Hebard (1906), under the names intermedius, atlanis, andbilituratus, discussed the variation observed in the cerci and otherorgans of specimens fro
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Keywords: ., bookauthorun, bookcentury1800, bookdecade1870, booksubjectscience
