Thomas’s Trig (Anaxipha thomasi)

Song of a Thomas’s Trig (scroll down for explanation and additional recordings!).

insect_musicians_20130807_Thomas's_Trig_WH__MG_0377Another small and delicate singer, Thomas’s Trigs are found in trees and shrubs rather than near the ground as with Say’s Trigs. Apparently, they are always found beneath or near pines. This species was just described to science in 2014! Imagine, a somewhat common, loudly singing insect that has evaded specific description all this time. Thomas’s Trigs are very similar in appearance to Say’s Trigs with perhaps less striking markings on the face and paler eyes. This species can be hard to collect as they are often well off the ground. If you find one singing in a shrub, you might be able to carefully maneuver yourself into a position to see the singer. Thomas’s Trigs are extremely fast runners and will jump at the slightest provocation.

Range Map for Thomas's Trig.

Thomas’s Trig

Song: A clear, silvery trill at about 7 kHz that can be heard from a hundred or more feet away. This song is very similar to Say’s Trig however, the pusle rate for Thomas’s Trig is about 17 chirps per second rather than 35-40 chirps per second for Say’s. Males are usually not well concealed while singing, however, their habit of singing from trees and shrubs makes them hard to find.

If you are interested in the scientific literature that describes this, and a number of new Anaxipha species, see this PDF.
 

Thomas’s Trig

Thomas's Trig

• click to enlarge •

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FAMILY DESCRIPTION

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Meadow Katydids (Tettigoniidae):
FAMILY DESCRIPTION
Saltmarsh Meadow Katydid
Short-winged Meadow Katydid
Slender Meadow Katydid
Woodland Meadow Katydid
Straight-lanced Meadow Katydid
Agile Meadow Katydid
Black-legged Meadow Katydid
Common Meadow Katydid
Gladiator Meadow Katydid
Handsome Meadow Katydid
Lesser Pine Meadow Katydid
Long-spurred Meadow Katydid
Red-headed Meadow Katydid
Coneheads (Copiphorinae):
FAMILY DESCRIPTION
Round-tipped Conehead
Nebraska Conehead
Robust Conehead
Slightly Musical Conehead
Sword-bearing Conehead
False Robust Conehead
True Katydids (Pseudophyllinae):
FAMILY DESCRIPTION
Common True Katydid
False Katydids (Phaneropterinae):
FAMILY DESCRIPTION
Clicker Round-winged Katydid
Common Virtuoso Katydid
Rattler Round-winged Katydid
Oblong-winged Katydid
Great Angle-wing
Lesser Angle-wing
Broad-winged Bush Katydid
Curved-tailed Bush Katydid
Fork-tailed Bush Katydid
Northern Bush Katydid
Texas Bush Katydid
Treetop Bush Katydid
Shield-backed Katydids (Tettigoniinae):
FAMILY DESCRIPTION
American Shieldback
Least Shieldback
Protean Shieldback
Robust Shieldback
Roesel’s Katydid

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