Breaking the rule: Five larval instars in the podonomine midge Trichotanypus alaskensis Brundin from Barrow, Alaska

• Published in: Journal of Limnology
• Main Authors: Alec R. Lackmann, Malcolm G. Butler
• Format: Article in Journal/Newspaper
• Language: English
• Published: PAGEPress Publications 2018
• Subjects: Podonominae; Chironomidae; Arctic; Brooks-Dyar rule; larval exuviae; envir; geo; Dyar; Barrow; Tundra; Alaska
• Online Access: https://doi.org/10.4081/jlimnol.2018.1758; https://doaj.org/article/73a694fdcf6b40cc9bd235bbb1cf2023

Except for one unconfirmed case, chironomid larvae have been reported to pass through four larval instars between egg and pupal stages. We have observed a fifth larval instar to be a standard life-cycle feature of the podonomine Trichotanypus alaskensis Brundin 1966 in tundra ponds on the Arctic Coa...