Skip to main content Accessibility help

We use cookies to distinguish you from other users and to provide you with a better experience on our websites. Close this message to accept cookies or find out how to manage your cookie settings.

Close cookie message
×
  1. Home
  2. Journals
  3. The Memoirs of the Entomological Society of Canada
  4. Volume 109 supplement s102
Journal Home
Refine listing

Refine listing

Access:
Publication date:

Actions for selected content:

Select all | Deselect all
  • View selected items
  • Export citations
  • Download PDF (zip)
  • Save to Kindle
  • Save to Dropbox
  • Save to Google Drive

Save Search

You can save your searches here and later view and run them again in "My saved searches".

Please provide a title, maximum of 40 characters.
Cancel
×
< Back to all issues

Volume 109 - Supplement S102 - 1977

Contents

Research Article

  • A REVISION OF THE NEARCTIC SPECIES OF ORTHOCLADIUS (ORTHOCLADIUS) VAN DER WULP (DIPTERA: CHIRONOMIDAE)

  • Annelle R. Soponis
  • Published online by Cambridge University Press:
    31 May 2012, pp. 1-187

  • The classification of the Nearctic species of the subgenus Orthocladius (Orthocladius) van der Wulp is revised; keys to species for males, females, pupae, and larvae are given; 65 characters in the adult male are taxonomically evaluated; and keys to and diagnoses of the species of the subgenera of Orthocladius for males, females, pupae, and larvae are given. Twenty-nine names of O. (Orthocladius) are recognized as valid. Redescriptions of 17 previously-known species and descriptions of 11 new species are presented. The new species are: O. appersoni, O. charensis, O. clarkei, O. cooki, O. hazenensis, O. hellenthali, O. knuthi, O. oliveri, O. robacki, O. subletti, and O. tryoni. Orthocladius paradorenus (Roback) is considered as a synonym of O. obumbratus Johannsen, and O. currani Sublette is considered as a synonym of O. dorenus (Roback); O. nanseni Kieffer and O. sordens Johannsen are considered as nomina dubia; O. bifasciatus Malloch and O. clepsydrus Coquillett are incertae sedis. Lectotypes are designated for Chironomus decoratus Holmgren, O. dentifer Brundin, O. excavatus Brundin, O. lapponicus Goetghebuer, O. obumbratus Johannsen, and O. trigonolabis Edwards. Orthocladius dentifer Brundin, O. excavatus Brundin, and O. smolandicus Brundin are new records from North America. Orthocladius glacialis Kieffer probably does not occur in North America. Orthocladius oblidens (Walker) is accepted as the type-species of the genus Orthocladius.

Other