Frankliniella tritici

University of Alberta E.H. Strickland Entomological Museum Read more about this collection »

Common NameEastern Flower Thrips (Stannard, 1968) SeasonalityMay to July (Webb et al., 1970). IdentificationThe body is yellow, and has dark setae. Antennal segments 6 to 8 and the distal half of segment 4 are brown, and the forewing is pale. The head is wider than long. The antennae are 8 segmented, and segments 3 and 4 each have a forked sense cone. Antennal segment 3 is slightly swollen at the pedicel, and segment 8 is no longer than 7. Three pairs of ocellar setae are present, and pair 3 arises along the anterior margins of the ocellar triangle. The pronotum has 5 pairs of major setae, and the anteromarginal setae are shorter than the anteroangulars. The metanotum has 2 pairs of setae along the anterior margin, and a pair of campaniform sensilla. This species is macropterous, and each forewing has 2 complete rows of veinal setae. Tergites 5 to 8 each have a pair of lateral ctenidia, and the posteromarginal comb on tergite 8 has only a few teeth. Sternites 3 to 7 lack discal setae (Moritz et al., 2001).

Scientific Name Frankliniella tritici Common Name Eastern Flower Thrips (Stannard, 1968) Habitat Various flowers, including those of fruit trees and roses (Moritz et al., 2001). Seasonality May to July (Webb et al., 1970). Identification

The body is yellow, and has dark setae. Antennal segments 6 to 8 and the distal half of segment 4 are brown, and the forewing is pale. The head is wider than long. The antennae are 8 segmented, and segments 3 and 4 each have a forked sense cone. Antennal segment 3 is slightly swollen at the pedicel, and segment 8 is no longer than 7. Three pairs of ocellar setae are present, and pair 3 arises along the anterior margins of the ocellar triangle. The pronotum has 5 pairs of major setae, and the anteromarginal setae are shorter than the anteroangulars. The metanotum has 2 pairs of setae along the anterior margin, and a pair of campaniform sensilla. This species is macropterous, and each forewing has 2 complete rows of veinal setae. Tergites 5 to 8 each have a pair of lateral ctenidia, and the posteromarginal comb on tergite 8 has only a few teeth. Sternites 3 to 7 lack discal setae (Moritz et al., 2001).

Life History This species will, on occasion, bite man (Stannard, 1968). Conservation Very common, and causes physical damage to flowers and newly formed fruits (Stannard, 1968). Diet Info Pollen (Heming), flowers and buds (Webb et al., 1970). Range Alberta, Manitoba, Saskatchewan, B.C., Ontario, Quebec, N.W.T. (Chiasson, 1986). Widespread in North America and Mexico (Moritz et al., 2001).

Page Citation

"Species Details - Frankliniella tritici, University of Alberta E.H. Strickland Entomological Museum." University of Alberta Museums Search Site, https://search.museums.ualberta.ca/g/2-3454. Accessed 22 Feb. 2025.

References

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