Stactobiella tshisjakovi

• Main Author: Ito, Tomiko
• Format: Other/Unknown Material
• Language: unknown
• Published: 2022
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Insecta; Trichoptera; Hydroptilidae; Stactobiella; Stactobiella tshisjakovi; Armitage; Morse; Seta; Sakhalin; morse
• Online Access: https://zenodo.org/record/6316752; https://doi.org/10.5281/zenodo.6316752

Stactobiella tshisjakovi (Arefina & Morse, in Arefina et al. 2002) (Fig. 2) Stactobia tshistjakovi Arefina & Morse, in Arefina et al. 2002, 103–104, male, Russian Far East (Khasansky); Arefina & Armitage 2003, 17, Russian Far East (Sakhalin). Stactobiella tshistjakovi: Arefina 2004, 209; Ito et al. 2010, 57, Japan (Hokkaido); Ito 2013, 51, 80, Japan (Hokkaido); Potikha & Vshivkova 2016, 364, Russian Far East (Primorye); Ito 2017a, 40, Japan (Hokkaido); Ito 2020, 562–563, male, female, Japan (Hokkaido, Honshu). Final instar larva (Figs 2A–2G). Slightly compressed laterally, up to 1.7 mm long. Head. Almost quadrate, sides subparallel, width up to about 0.2 mm; width:length:depth about 1.00:1.05:0.95; light brown, without any color patterns; longest pair of setae situated near mesal sides of eye spots (seta 9 of Wiggins 1996) about 2.8 times head width and 2.3 times head length; anterior ventral apotome wide, triangular. Coronal suture distinct. Anterior apotome shallowly triangular, cardo and posterior apotome indistinct. Antennae situated near anterolateral corners, each with seta near mid-length and sensillum apically. Thorax. Pronotum completely covered with pair of rectangular tergites; meso- and metanota each broadly covered with pair of rectangular tergites; pronotum light brown with dark lateral and posterior edges, meso- and metanota each with dark anterolateral corners and dark posterior edges; number of setae on each tergite, about 15 on pronotum, about 12 on mesonotum, and about 10 on metanotum; ventral sclerites absent. Three thoracic legs short and subequal tarsal claws stout, sharply curved, each with slightly curved and thickened blunt basal spur (indicated by arrow on Figs 2E, 2F). Abdomen. Slightly compressed laterally, distended, segments gradually enlarging from I to IV, then decreasing, curvature of abdomen slight; dorsal chloride epithelia on segments II–VIII; without sclerites on segments I–VIII; single large dorsal sclerite on segment IX; pair of square dorsolateral sclerites ...