Background and activities

Research interests

I am interested in evolution, systematics and biogeography, in particular of non-biting midges of the family Chironomidae (Diptera). My research focuses on taxonomy, biology, phylogeny, zoogeography and molecular systematics of genera and species in the tribe Tanytarsini, but I am also involved in work with other groups of animals and plants.

The last few years I have been heavily involved in various priojects testing and using DNA barcoding in biosystematics. I am currently chairing the Norwegian Barcode of Life network and project (NorBOL) with the goal of developing this initiative into a national infrastructure on DNA Barcoding.


The last couple of years I have lectured courses in biosystematicsm biogerography and molecular techniques (BI1002, BI2001 and BI2019) at the NTNU Department of Biology

Scientific collections

I am curator of Diptera, Hymenoptera, Arachnida and a few minor insect orders at the NTNU University Museum.

Scientific, academic and artistic work

Displaying a selection of activities. See all publications in the database

Journal publications

Part of book/report

  • Przhiboro, Andrey; Ekrem, Torbjørn; Stur, Elisabeth. (2011) Taxonomy and bionomics of Tanytarsus recurvatus Brundin, 1947. Contemporary Chironomid Studies - Proceedings of the 17th International Symposium on Chironomidae.
  • Bolton, Michael J.; Ekrem, Torbjørn; Sublette, James E.; Sublette, Mary F.. (2010) A new species of Paratanytarsus Thienemann and Bause (Diptera: Chironomidae) with unusual larval and adult male morphology. Proceedings of the XV International Symposium on Chironomidae.
  • Ekrem, Torbjørn; Halvorsen, Godtfred A.. (2007) Taxonomy of Tanytarsus lapponicus Lindeberg, 1970, a species with larval mandible of ‘lugens-type’ (Diptera: Chironomidae). Contributions to the Systematics and Ecology of aquatic Diptera: a Tribute to Ole A. Sæther.
  • Ekrem, Torbjørn; Stur, Elisabeth. (2007) Description of Tanytarsus hjulorum, new species, with notes and DNAbarcodes of some South African Tanytarsus (Diptera: Chironomidae). Contributions to the Systematics and Ecology of aquatic Diptera: a Tribute to Ole A. Sæther.
  • Ekrem, Torbjørn; Sæther, Ole Anton. (2000) Seppia, a new Afrotropical tanytarsine genus (Diptera: Chironomidae). Late 20th Century Research on Chironomidae. An Anthology from the 13th International Symposium on Chironomidae.


  • Stur, Elisabeth; Ekrem, Torbjørn. (2006) Description and DNA barcodes of the Alpine Micropsectra oberaarensis, a new species in the attenuata group. 16th International Chironomid Symposium . Centro de Estudos da Macaronesia, Universidade da Madeira; Funchal, Madeira. 2006-07-25 - 2006-07-28.
  • Ekrem, Torbjørn. (2004) Systematics and biogeography of Zavrelia and Stempellinella (Diptera: Chironomidae). Web-presentasjon [Kunstnerisk og museal presentasjon] ; 2004-11-12.

Postal address

Department of Natural History Norwegian University of Science and Technology NO-7491 Trondheim Norway