Stonefly Species Sweltsa naica (Sallflies)

Source: Larvae Of Eight Eastern North American Sweltsa (Plecoptera: Chloroperlidae)

Mature larva. Body length 10 mm. General color brown, head darker over frons (Fig. 16). Pronotum bearing ca. 14 anterolateral setae and ca. 19 posterolateral setae near margin; posterolateral row extends to median suture. Mesonotum bearing ca. 13 prominent outer marginal setae and metanotum bearing ca. 17 prominent outer marginal setae (Fig. 17); intercalary surface of metanotal wing pad with numerous setae. Fore femora with numerous thick setae in basal half and along dorsal margin (Fig. 18); dorsal margin with a few fringe setae. Tibiae with outer fringe setae and inner row of thick setae. Posterior abdominal fringe on tergum 8 with median field occupied by a small group of thin setae, tergum 9 fringe with thick setae in median field (Fig. 19). Cerci with ca. 15 segments; long dorsal setae in segmental whorls about as long as 2 segments (Fig. 20); most apical segments with several long setae visible in profile.