Family - Perlidae

Taxonomic Hierarchy for Freshwater Invertebrate Collection


Results

11 results for "Perlidae"

Acroneuria californica

Freshwater Invertebrate Collection

Acroneuria lycorias

Freshwater Invertebrate Collection

SeasonalityAdults emerge in early to mid July depending on water temperatures. IdentificationMales (length = 18 mm) have paraprocts that are flattened, triangular and sharply pointed at their anteriorly directed tips, and have spinules on Tergites 9 and 10. Females (length = 35 mm) have the subgenital plate produced and flattened or emarginate apically. Adults can be distinguished from Acroneuria abnormis by the presence of anal gill remnants and dark brown sclerotization on the head within the ocellar triangle. Nymphs have anal gills, and a banded pattern on abdominal terga with a light M-pattern in front of the anterior ocellus.

Acroneuria sp.

Freshwater Invertebrate Collection

Acroneuria theodora

Freshwater Invertebrate Collection

Calineuria californica

Freshwater Invertebrate Collection

Calineuria sp.

Freshwater Invertebrate Collection

Claassenia sabulosa

Freshwater Invertebrate Collection

SeasonalityAdults emerge in late June to mid-July. IdentificationMales (length = 19.6 mm) are brachypterous, but females (length = 31.4 mm) are long-winged. Males have genital hooks darkly sclerotized at their tips and arising from lateral angles of Tergum 10. Males also have a raised knob or "hammer" on Sternum 9. The female subgenital plate is broadly rounded, usually with a shallow median recession and is little produced over Sternum 9. The subgenital plate has a row of spinules along its posterior margin. Nymphs have anal gills and an occipital ridge composed of spinules.

Claassenia sp.

Freshwater Invertebrate Collection

Doroneuria sp.

Freshwater Invertebrate Collection

Hesperoperla pacifica

Freshwater Invertebrate Collection

SeasonalityAdults emerge over a two-week period from late June to early July. IdentificationMales (length = 25 mm) have paraprocts that are flattened, triangular and sharply pointed at their anteriorly directed tips, but lack spinules on Tergites 9 and 10. Females (length = 37 mm) have the subgenital plate produced over half of Sternum 9; the hind margin of the subgenital plate is slightly angular and usually has a squarish shiny spot at its apex. The nymph has anal gills but lacks an occipital ridge. The nymphal head has a yellow mark extending from the labrum to the anterior ocellus and dark brown abdominal terga.

Perlesta sp.

Freshwater Invertebrate Collection

Taxonomic Hierarchy for Freshwater Invertebrate Collection