Cricotopus ( Cricotopus ) annulator, Goetghebuer, 1927

Cricotopus ( Cricotopus) annulator View in CoL complex

Figs 14A–F

Diagnosis. Head yellowish brown; SI seta bifid; pecten epipharyngis consisting of 3 equal sized scales; premandible ( Fig. 14A) with single narrow tooth, without brush; antenna ( Fig. 14B) AR 1.7; mandible ( Fig. 14C) weakly rugose on outer margin; mentum ( Fig. 14D) with broad median tooth, about 2.5x as wide as 1 st lateral tooth which are broadly rounded apically, 2 nd lateral reduced, slightly set off from 3 rd lateral; VM plates with lightly sclerotized basal extension; body with long thick setal tufts ( Fig. 14E); posterior end of abdomen as in Fig. 14F, anal tubules, cylindrical about 0.75x as long as posterior parapods.

Notes. There exists some uncertainty regarding the identity of C. ( C.) annulator and its separation from the Nearctic species Cricotopus ( Cricotopus) slossonae Malloch and Cricotopus ( Cricotopus) varipes Coquillett ( Epler 2001) .

Ecology and habitat. Some larvae within the complex have temperature preference of 17 °C and tolerance range of 10.7–23.6 °C ( Rossaro 1991). Some larvae within the complex occur in high elevations (i.e.> 2000m) found over boulders of cold streams, to the soft sediments of the lower reaches of streams and lake outlets ( Sublette et al. 1998). Some species within the complex are univoltine ( Tokeshi 1986).

Sampling sites. Massasauga, Arrowhead and Algonquin Provincial Parks and Parry Sound District.

Nearctic distribution. Canada: Ontario.