|scientific name Thrips simplex |
common name Gladiolus Thrips
Polyphagous, including; Gladiolus sp., Dianthus sp., (Nakahara 1994).
The length of the body varies around 1.5 to 1.8mm. The body is dark brown with the foretibiae, bases of the femora and the apices of the mid- and hindtibiae a yellowish brown. The forewings are gray-brown except for the basal quarter, which is almost white. The apices of antennal segment 2 and all of segment 3 are yellow to yellowish brown. All other antennal segments are brown. The head is broader than long. Ocellar setae pair 3 is inside the ocellar triangle and posterior to the anterior ocellus. The antennae are 8 segmented. The pronotum has 3 pairs (occasionally 4) of posteromarginal setae. The metanotum is reticulate, and the reticles have short wrinkles. The forevein on the forewing has 5 to 8 distal setae. Abdominal tergite 2 has 3 lateral setae and tergite 8 has a complete posteromarginal comb with irregularly spaced microtrichia. Tergite 8 has 2 pairs of campaniform sensilla. Sternite 1 has 3 anteromedial setae, and sternites 3 to 7 each have a transverse row of accessory setae. On males, sternites 3 to 7 each have a transversely elongate glandular area (Nakahara 1994).
Most likely introduced to North America from Africa (Nakahara 1994). Breeds on flowers and leaves of Gladiolus sp. (Moritz et al 2001).
Major pest of gladiolus, carnations, and other flowers (Nakahara 1994).
Foliage and petal feeder (Heming Pers. Comm. 2002).
Alberta, Ontario (Chiasson 1986), New Zealand, Africa, Asia, Australia, North America (Kirk 1987), throughout most of the world (Nakahara 1994).
Comments are published according to our submission guidelines. The EH Strickland Entomological Museum does not necessarily endorse the views expressed.