Entomology Collection TitleImage Bugs Pinned
Species Page - Dendroctonus simplex
species list search results ->Dendroctonus simplex ->species page

E-mail this Page   
Print this Page   
Link to this Page   

scientific name    Dendroctonus simplex    

common name     Larch Beetle

Dying or injured trees such as windfall or stumps; may attack live trees.

Flight period is from early May through to late August.

This species has a coarsely punctured but smooth frons, as well as a coarsely punctured pronotum and declivity. It can be distinguished from its closest ally, D. pseudotsugae, by its distribution and smaller size in sympatric regions.

life history
This species overwinters as young adults or as larvae. The mature adults will emerge in the spring to excavate new galleries. The galleries have egg grooves in them but no egg niches. Oviposition will begin in the last week of May. Eggs are laid in groups of 3 to 6 eggs. The eggs hatch within one week and the larvae will then develop with about 27 days. The larvae will then pupate for 7 days. After pupation the adults will spend the remaining time of the year in the gallery, and overwinter. In any given year a mature female may excavate 2 or 3 galleries.

This species is considered to be a minor pest.

diet info
This species feeds on Larix laricina (Larch).

This beetle is found across Canada and is also in the US (in AK, ME, MI, MN, NH, NY, VT and WV).

quick link

Comments (0)Add New Comment

Comments are published according to our submission guidelines. The EH Strickland Entomological Museum does not necessarily endorse the views expressed.

Add New Comment (all fields are required)

Related Species Info
Display Hierarchy
References (1)
Specimen Info
There are 11 specimens of this species in the online database
Map Distribution
Adult Seasonal Distributioncreate a collection histogram with specimens
Specimen List (11)


Logo Department of Museums and Collections ServicesLogo University of Alberta