Chaoborus flavicans
Creators: name: Bang, Woo Jun
name: Shin, Seunggwan
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Chaoboridae
Chaoborus
Chaoborus flavicans

description: Key to species of Chaoborus flavicans complex (based on Salmela et al. 2021b)
Adult male
1. Gonostylus rather short, length/width 9.43 (7.9–10.7); paramere dark, apical claw relatively long......... C. posio Salmela
- Gonostylus rather narrow and long, length/width 12.6–13.7 (10.2–16.2); paramere light brown to brown, unicolorous or bicolorous, apical claw relatively short (Fig. 3a)............................................................. 2
2. Paramere bicolorous, apical claw relatively narrow and gently curved or straight................... C. flavicans (Meigen)
- Paramere unicolorous, apical claw relatively stout and curved.................................................. 3
3. Paramere medially bent and constricted (Fig. 3b–c).......................... C. pseudoflavicans sp. nov. Bang & Shin
- Paramere almost straight or slightly curved........................................... C. albipes (Johannsen, 1903)
Pupae
* Pond-dwelling specimens are hard to distinguish due to intraspecific variation.
1. Respiratory organ club-shaped, subapical constriction absent, relatively short 844 (770–930)............ C. posio Salmela
- Respiratory organ slender or voluminous form, subapical constriction present..................................... 2
2. Length of respiratory organ> 1000 μm (920–1360), slender form in ponds (Fig. 4e); voluminous form in lakes............................................ C. flavicans (Meigen) / C. pseudoflavicans sp. nov. Bang & Shin (only slender form)
- Length of respiratory organ mostly <1000 (690–1050), slender form...................... C. albipes (Johannsen, 1903)
IV instar larvae
* Serration of labral blades are mostly varied in all complex species.
1. Mandibular lateral teeth inconspicuous, first lateral tooth shorter or smaller than mandibular tooth 3 (subordinate tooth)........................................................................................ C. flavicans (Meigen)
- Mandibular lateral teeth conspicuous, first lateral tooth about as long as mandibular tooth 3 (subordinate tooth)........... 2
2. Number of mandibular fan bristles <14 (usually 10–13), average number of lateral teeth almost <4 (3–4) (Fig. 4c)........................................................................... C. pseudoflavicans sp. nov. Bang & Shin
- Number of mandibular fan bristles> 20, average number of lateral teeth> 5 (5–8).................................. 3
3. Number of mandibular fan bristles usually> 22, (up to 29); labral blade almost serrated, rather wide–length/width 3.7 (3–5)....................................................................................... C. posio Salmela
- Number of mandibular fan bristles usually 15–21, (up to 25); labral blade almost smooth, rather narrow–length/width 5.6 (4.4–6.9)...................................................................... C. albipes (Johannsen, 1903)
description: Published as part of Bang, Woo Jun & Shin, Seunggwan, 2023, A new species of the Chaoborus flavicans complex (Diptera, Chaoboridae) in South Korea, pp. 57-81 in Zootaxa 5360 (1) on pages 63-65, DOI: 10.11646/zootaxa.5360.1.3, http://zenodo.org/record/10084843