Corynoneura palus, Namayandeh & Hudson & Bogan & Hudson, 2024

Namayandeh, Armin, Hudson, Patrick L., Bogan, Daniel L. & Hudson, John P., 2024, Chironomidae (Diptera: Insecta) of Alaska, USA, with descriptions of new species and a checklist, Zootaxa 5511 (1), pp. 1-95 : 55-56

Corynoneura Winnertz 1846

Sikes et al. (2016) reported Corynoneura lobata Edwards, 1924 , and Corynoneura scutellata Winnertz 1846 larvae on St. Matthew Island. We collected larvae of C. lobata from the East Alsek River in Glacier Bay National Park and Preserve. Adults, pupae, and larvae of C. scutellata came from Six Mile and South Fork Chester Creeks in the Anchorage area. Three adult males of Corynoneura arctica Kieffer, 1923 , a new record for Alaska, were collected in Juneau. Two males were collected near a first-order stream in Lena Point and two near Peterson Creek, where it enters Salt Chuck Lake north of Juneau. An unknown larva of a Corynoneura species with an unusually long antenna was collected from Twin Lakes in Juneau with the antenna and mentum resembling Corynoneura doriceni Makarchenko & Makarchenko, 2006 . However, the characteristics of subbasal setae of posterior parapods differ. We collected Corynoneura edwardsi Brundin, 1949 larvae in an Arctic lake in the Northern bioregion. We collected Corynoneura sp. near lacustris Edwards, 1924 larvae in the stomach of a 40 mm coho salmon from Margaret Lake, Revillagigedo Island. We collected a single adult of a new species C. palus sp. nov., near a forested bog in the Eaglecrest Ski Area on Douglas Island in mid-July. The larvae of unknown Corynoneura have been collected in the Miller Creek watershed ( Bowser et al. 2020) and we have collected larvae from Little Rabbit Creek, Wasilla Creek, Lucille Creek and from the East Fork of the Moose River in Southcoastal Alaska. None of these would key based on Fu & Saether (2012). We have found Corynoneura larvae commonly in lakes and streams throughout the state.

Corynoneura larvae move freely on the upper and lower sides of aquatic plant leaves, often near the water surface ( Darby, 1962). They are also found on submerged wood, stones, and dead leaves at the bottom of various freshwaters ( Moller Pillot, 2014).