Female fully winged. Body, legs and antennae mainly brown, tarsi and antennal segment III yellow, tibiae yellowish brown, fore wings pale. Head longer than wide, eyes larger dorsally than ventrally; dorsal surface with little sculpture; postocular setae close to posterior margin of eyes, slender, capitate, wide apart; maxillary stylets retracted to postocular setae, about one third of head width apart. Antennae 8-segmented; sensoria sometimes small and difficult to observe, segment III with 2, IV with 3 or 4. Pronotum with little sculpture; four pairs of slender, capitate major setae, anteromarginals minute; prosternal basantra large, about as long as wide; mesopresternum transverse. Fore tarsus with small curved tooth at inner apex. Metanotum faintly reticulate. Forewing slender, weakly constricted medially, with about three duplicated cilia. Pelta reticulate; tergites II–VII with two pairs of sigmoid setae; tergite VIII setae S1 and S2 slender and capitate; tergite IX setae S1 capitate, S2 very long and acute; anal setae longer than tube.
About 45 species are listed in the genus Karnyothrips, but it is questionable how many of these should be placed in the same genus. A key to 14 species from Central and South America that have been placed in this genus was given by Mound & Marullo (1996), and a key to 11 species from Japan was given by Okajima (2006), whilst Stannard (1968) included three North American species within his treatment of the genus Haplothrips. The problems in distinguishing between these two genera are discussed by Mound & Minaei (2007). K. flavipes differs from K. longiceps in having setae S1 on the eighth abdominal tergite capitate rather than pointed; both species have capitate S1 setae on the ninth tergite.
Karnyothrips flavipes (Jones)
Apparently predatory on other small arthropods.
Collected frequently from many habitats, but primarily from dead branches and also on dead leaves and grasses; less commonly in flowers and on leaves.
Possibly southern USA
Widespread around the world in tropics and sub-tropics.