Procladius,

Saether, Ole A., 2010, Procladius Skuse from Lake Winnipeg, Manitoba, Canada, with keys to some females and immature stages of the genus (Diptera: Chironomidae), Zootaxa 2726, pp. 34-58: 55

publication ID

http://doi.org/ 10.5281/zenodo.200030

persistent identifier

http://treatment.plazi.org/id/03DE87CE-FC67-FFA4-ACBF-FDDBFA2870B0

treatment provided by

Plazi

scientific name

Procladius
status

 

Key to pupae of Procladius  present in Lake Winnipeg

Roback (1980: 30) give a more complete key to pupae of Nearctic species. The variation in size, however, appear to be larger than indicated by Roback and P. (H.) culiciformis  in the sense of Roback appear to differ from the associated pupae from Lake Winnipeg.

1. Anal lobes ( Fig. 12View FIGURE 12 G) with 15–27 spines; spines at apex not distinctly set off from remaining spines, not in a dense cluster and not on a protuberance; thoracic horn ( Fig. 12View FIGURE 12 A) 0.29–0.43 mm long and 3.4–5.3, mean 4.6 times as long as wide...................................................................................... P. (Psilotanypus) bellus (Loew) 

- Anal lobes with 24–63 spines; spines at apex either distinctly set off from remaining spines, in a dense cluster of spines or on a protuberance ( Fig. 12View FIGURE 12 H –L); thoracic horn ( Fig. 12View FIGURE 12 B –F) 0.33–0.65 mm long and 2.6 –4.0 times as long as wide........... 2

2. Neck of thoracic horn not visible, hidden by plastron plate; anal lobe with about 45 lateral spines.............................................................................................. P. (Holotanypus) paragretis? Roback 

- Neck of thoracic horn visible, not hidden by plastron plate; anal lobe with about 23–62 lateral spines................... 3

3. Tergites dark, brownish; plastron plate ( Fig. 12View FIGURE 12 D) about 1.26 times as wide as apical constriction of horn chamber; thoracic horn about 0.53 mm long; about 40 spines on anal lobe ( Fig. 12View FIGURE 12 J)............................ P. (H.) rugulosus  ? n. sp.

- Tergites light, pale brownish; plastron plate about 1.4 –3.1 times as wide as apical constriction of horn chamber; thoracic horn 0.35–0.58 mm long; 23–62 spines on anal lobe.............................................................. 4

4. Atrial wall of thoracic horn with reticulate pattern ( Fig. 12View FIGURE 12 E, F)................................................ 5

- Atrial wall of thoracic horn without reticulate pattern......................................................... 6

5. Spinules on T IV relatively large, not much grouped ( Fig. 12View FIGURE 12 M); anal lobe ( Fig. 12View FIGURE 12 K) with 24–32, mean 28, spines on outer margin; sparse row of long spines posterolaterally; spines at apex either on distinct protuberance or enlarged; thoracic horn ( Fig. 12View FIGURE 12 E) 0.39–0.58 mm long..................................................... P. (H.) denticulatus Sublette 

- Spinules on T IV smaller, grouped ( Fig. 12View FIGURE 12 N); anal lobe ( Fig. 12View FIGURE 12 L) with 36 –40, 38 spines on outer margin, densely grouped posterolaterally, usually one at apex of inner margin, and apical spines relatively small and set off from remaining spines; thoracic horn ( Fig. 12View FIGURE 12 F) 0.38–0.49 mm long................................................ P. (H.) sublettei Roback 

6. Anal lobe with about 7–12 spines near apex of inner margin ( Fig. 12View FIGURE 12 I); spines at apex directed laterad, 42–62 distinct spines on outer margin..................................................................... P. (H.) culiciformis  (L.)

- Anal lobe at most with 1 apical spine on inner margin; spines at apex of outer margin directed perpendicular to anal lobe ( Fig. 12View FIGURE 12 H); about 26–50 distinct spines on outer margin....................................... P. (H.) freemani Sublette