Palaeagapetus celsus Ross 1938

• Main Authors: Ito, Tomiko, Wisseman, Robert W., Morse, John C., Colbo, Murray H., Weaver Iii, John S.
• Format: Other/Unknown Material
• Language: unknown
• Published: 2014
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Insecta; Trichoptera; Hydroptilidae; Palaeagapetus; Palaeagapetus celsus; Seta; Flint; Abrams; Mill Brook; Fishing Creek; Montgomery Creek; abenaki
• Online Access: https://zenodo.org/record/5082517; https://doi.org/10.5281/zenodo.5082517

Palaeagapetus celsus Ross, 1938 (Figs. 7, 8, Table 2) Palaeagapetus celsus Ross, 1938, 111 – 112, fig. 16, male, female, North Carolina; Flint, 1962, 40 – 44, figs. 1 – 9, larva, pupa, case, North Carolina, Tennessee. Adult (Fig. 7). Body dark brown in alcohol, 2.8 mm long in male (2.5–3.3 mm, n=7) and 3.5 mm long in female (3.1–3.9 mm, n=8). Antennae each 25-segmented, 2.3 mm long in male (2.2–2.5 mm, n=4); 23- or 24-segmented, 1.8 mm long in female (1.6–2.0 mm, n=8); scape slightly thicker and longer than other segments. Maxillary palpi, labial palpi and warts on head and thorax as in P. nearcticus. Wings (A). Length of each forewing and hind wing 3.4 mm and 3.0 mm in male (3.1–3.6 mm, 2.6–3.2 mm, n=6); 3.4 mm and 2.9 mm in female (3.0– 3.6 mm and 2.7–3.0 mm, n=9). Color and venation as in P. nearcticus. Lateral bulges of sternum V (7B, F) round. Ventral process developed on segment VII in male (7B) and segment VI of female (7F). Male genitalia (Figs. 7C–E). Segment IX (IX) short, anterolateral margins long, strongly projecting to anterior of segment VIII. Lateral appendages (la ap) of segment IX developed from mid-lateral region of genital capsule and directed caudad; thick and bilobed into dorsal and ventral branches at basal 1/3; dorsal branches (db) gently curved and tapered apically, each with slender process (sp) at basal 1/3 of mesal surface and many thick setae at apical half of dorsal surface, slender process directed mesocaudad with seta apically; ventral branches (vb) emerging near ventral bases of dorsal branches, directed ventrocaudad, each with 3 thick setae apically. Tergite X (tX) depressed dorsoventrally, curved dorsad apically in lateral view (7C), semicircular in dorsal view (7D). Inferior appendages (ia) each thick, short, twice as long as basal width, tapered at apical half with seta apically. Phallus (ph) short and broad, membranous with small forklike structure inside (7C, E). Female genitalia (Figs. 7F, G). Segments I–VII each with sclerotized tergite and sternite, very setose, tergite ...