Synonyms and other taxonomic changes
Gryllus brevicornis Johannson, 1763. Type locality: U.S.A.
Acrydium ensicorne De Geer, 1773. Type locality: Pennsylvania
Truxalis notochlorus Beauvois, 1805. Type locality: Santo Domingo, Domincan Republic, Hispaniola
Truxalis viridulus Beauvois, 1807. Type locality: Caribbean, South America [perhaps referable to ssp. adspersa]
Opsomala punctipennis Serville, 1838. Type locality: North America
Truxalis brevicornis adspersa Blanchard, 1843. Type locality: Santa Cruz, Bolivia [treated by some recent authors as a full, distinct South American species. Rehn interpretted Central American material as intermediate between ssp. brevicornis (to the north) and adspersa (to the south)]
Oxycoryphus burkhartianus Saussure, 1861. Type locality: Mexico
Truxalis brevicornis (Johannson) S.H. Scudder, 1869
Opomala stenobothroides Walker, 1871. Type locality: Chontales, Nicaragua
Metaleptea brevicornis (Johanson) Giglio-Tos, 1897
Metaleptea brevicornis adspersa (Blanchard) Rhen, 1944
Metaleptea adspersa Donato & Cigliano, 2000
Explanation of Names
(Former genus name is from troxalis
, a Latin/Greek word for grasshopper, related to Greek trox
, gnaw, see A Dictionary of Botanical Etymology
Males: 25-38 mm, females: 36-53 mm (forehead to tip of folded wings)
Slant-faced, angled forewing tips, sword-like antennae, short rear-pointing spines on hind knees are distinctive:
Color variable brown and green. Hindwing has no pigment. Flies, seldom leaps.
Eastern North America, mostly east of Mississippi. In south, range extends west to Texas, from there, south into neotropics, temperate South America.
Wetlands with sedges, grasses, sometimes occurs in salt marshes.
Mid-summer to fall. July-October (eastern North America). August-September (Michigan).
Both males and females come to lights at night. This has been noted in late July and early August in the lower Piedmont of North Carolina. Presumably this is a period of dispersal.
This species is nearly unique among North American Slant-faced Grasshoppers in that it crepitates, producing a sharp clicking sound when it flies. In addition, at least two species of Acrolophitus are known to click faintly when they fly (A. maculipennis & A. pulchellus).
Helfer, p. 152, fig. 249 (1)
Capinera, pp. 57-58, plates 33-34 (2)
Lutz, 3rd ed., plate 13, "Truxalis brevicornis" (3)
Brimley, p. 23, "Tryxalis brevicornis": "Raleigh and westward in marshes" (6)
Capinera et al., pp. 76-77 plate 7 (7)