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Genus Ligurotettix - Clicker grasshoppers

Desert Clicker Grasshopper  Ligurotettix coquilletti  - Ligurotettix coquilletti - male Pecos Clicker - Ligurotettix planum - male Pecos Clicker - Ligurotettix planum - female Pecos clicker grasshopper - Ligurotettix planum - female Pecos Clicker Grasshopper - Ligurotettix planum - male Desert Clicker Grasshopper - Ligurotettix coquilletti - male Desert Clicker Grasshopper - Ligurotettix coquilletti - male Acrididae 6.27.17 - Ligurotettix coquilletti - male
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Orthoptera (Grasshoppers, Crickets, Katydids)
Suborder Caelifera (Grasshoppers)
Family Acrididae (Short-horned Grasshoppers)
Subfamily Gomphocerinae (Slant-faced Grasshoppers)
No Taxon (Cibolacris Group)
Genus Ligurotettix (Clicker grasshoppers)
Synonyms and other taxonomic changes
Ligurotettix McNeill, 1897. Type species: Ligurotettix coquilletti McNeill
Goniatron Bruner, 1905. Type species: Goniatron planum Bruner
Numbers
Two species are recognized, but others may exist in Mexico.
Identification
Dull grayish or brownish grasshoppers that, when not feeding, rest on the branches of their host plants (Larrea divaricata or Flourensia cernua), where they are well camouflaged. They have rounded heads with nearly vertical faces. The eyes of living insects are dark with pale (usually white) spots. The front wings (tegmina) of the males have a prominent area with the veins near the lower (front) margin parallel and oriented diagonally, and have an intercallary vein as in the Oedipodinae. The hind wings are rather transparent, but are yellowish bedoming darker and smokey grayish/brownish toward the outer margin. There is a low somewhat triangular tubercle between the front legs (on the prosternum), but not a long obvious spur as in the similar-looking Spur-throat Grasshoppers.
Range
Mild winter deserts of southwestern North America.
Habitat
Desert shrubs most often of either Tarbush (Flourensia cernua; favored in the Chihuahuan Desert) or Creosote Bush (Larrea divaricata; favored in the Sonoran & Mojave Desert). Occasionally on other species of shrubs.
Season
Adults mostly in late spring thru autumn.
Remarks
The common name "Clicker" is something of a misnomer for the Chihuahuan species L. planum, as the sound the males produce is really a rasping sound, almost like rubbing a comb along the edge of something very rapidly. They vary the length and intensity of the sound depending upon whether it is a mating call, or a warning or distress signal, but it is always similar sounding. The sound produced by L. coquilletti is said to be a rapid clicking or "zipping", and is the species that first received the name "Clicker".

Ligurotettix is only superficially similar to other species in the Cibolacris Group, and the association has been made due to gross similarities in appearance and shape only. It is probably not closely related to them. Bootettix does show some similarities in structure, and perhaps is related. Both Ligurotettix and Bootettix exibit traits (often similar to those of Oedipodinae) that may be "primitive" or ancestral in nature.
Print References
Capinera, pp. 67-68, plate 2 (1)
McNeill. 1897. Proc. Davenport Acad. Nat. Sci. 6:189, 257 (BHL Links: text; plate 5 - fig. 24)
Works Cited
1.Field Guide To Grasshoppers, Katydids, And Crickets Of The United States
John L. Capinera, Ralph D. Scott, Thomas J. Walker. 2004. Cornell University Press.