Proceedings of the United States National Museum . (1878) credited spretus (sic!) to him-self and referred to the Illinois State Agricultural Report. Becauseof imcertainties over the identity of spretis, and the confusion withspretus if both names were to be retained for distinct populations, itis best to treat Acridium spretis Thomas 1865 as unrecognizable. Scudder (1878b) was the first to assign spretus to the genusMelanoplus. Descriptive notes: A large, long-winged member of the mexi-canus group (pi. 2,d). Head with fastigium comparatively far inadvance of compound eyes; the dorsal carinae
Proceedings of the United States National Museum . (1878) credited spretus (sic!) to him-self and referred to the Illinois State Agricultural Report. Becauseof imcertainties over the identity of spretis, and the confusion withspretus if both names were to be retained for distinct populations, itis best to treat Acridium spretis Thomas 1865 as unrecognizable. Scudder (1878b) was the first to assign spretus to the genusMelanoplus. Descriptive notes: A large, long-winged member of the mexi-canus group (pi. 2,d). Head with fastigium comparatively far inadvance of compound eyes; the dorsal carinae of vertex less prom-inent and farther apart than in mexicanus; eyes less rounded andbulging than in mexicanus; especially in male; pronotum (fig. 15,a)with strangulate narrowing of sides in front of principal transversesulcus, this conspicuous on lower portions of lateral lobes; in lateralview the principal sulcus lower than remainder of median carina;mesosternal hump well developed in male, absent in female. 56 PROCEEDINGS OF THE NATIONAL MUSEUM.
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Keywords: ., bookauthorun, bookcentury1800, bookdecade1870, booksubjectscience
