Scirtothrips dorsalis

Body yellow with brown markings medially on tergites III–VII; sternites without brown markings but antecostal ridges on tergites and sternites dark brown. Head about twice as wide as long, postocular and ocellar region closely striate; ocellar setae pair III arise between the posterior ocelli, well behind tangent between their anterior margins; two pairs of post-ocellar setae as long as ocellar setae pair III. Antennal segments V–VIII deeply shaded, III–IV slightly paler. Pronotum closely striate, usually with 1 pair of anteromarginal setae, 10–12 discal setae; posteromarginal setae 0.3–0.4 times as long as pronotum, S2 usually less than 2.0 times as long as S1. Metanotum transversely striate on anterior half, irregular elongate reticulation on posterior half. Tergites III–V with bases of median setae usually closer together than length of these setae; tergites III–VII with dark antecostal ridge and median area; tergite IX with discal microtrichia present posteromedially. Sternite VII of females with several rows of microtrichia medially across full width near posterior margin; median setae on sternite VII arising slightly in front of posterior margin.

Literature