Cookies Policy

This site uses cookies. By continuing to browse the site you are agreeing to our use of cookies.

I accept this policy

Find out more here

Karyotype differences and speciation in the gall wasp Andricus mukaigawae (s. lat.) (Hymenoptera: Cynipidae), with description of the new species A. kashiwaphilus

No metrics data to plot.
The attempt to load metrics for this article has failed.
The attempt to plot a graph for these metrics has failed.
The full text of this article is not currently available.

Brill’s MyBook program is exclusively available on BrillOnline Books and Journals. Students and scholars affiliated with an institution that has purchased a Brill E-Book on the BrillOnline platform automatically have access to the MyBook option for the title(s) acquired by the Library. Brill MyBook is a print-on-demand paperback copy which is sold at a favorably uniform low price.

Access this article

+ Tax (if applicable)
Add to Favorites
You must be logged in to use this functionality

image of Insect Systematics & Evolution

Andricus mukaigawae (s. lat.) has been considered to consist of two 'host races' adapted to different host plant species. Karyotypes of unisexual females of both host races were investigated. The two races were found to have different karyotypes (2n = 10 and 2n = 12). Overall, the karyotype was uniform within each race, and no structural heterozygosity of chromosomes occurred in individuals from localities where the two races coexist. Thus, the two races are regarded as distinct species. In addition to the karyotype differences, the species are clearly distinguishable on the basis of the shapes of the unisexual galls. Judging from the original description and illustration, the name Andricus mukaigawae (s. str.) can be applied to one race, whereas the other race is here described as Andricus kashiwaphilus sp. n. The karyotype of one species is likely to have evolved from that of the other by centric fission or centric fusion. The basic numbers of n = 5 and 6 are new records for the Cynipoidea, which usually have larger numbers of chromosomes. A small number of chromosomes may be a synapomorphy for the studied species, since other Andricus species examined so far have n = 10.

Affiliations: 1: Laboratory of Entomology, Faculty of Agriculture, Kyoto Prefectural University, Shimogamo, Kyoto 606, Japan (, Email:


Full text loading...


Data & Media loading...

Article metrics loading...



Can't access your account?
  • Tools

  • Add to Favorites
  • Printable version
  • Email this page
  • Subscribe to ToC alert
  • Get permissions
  • Recommend to your library

    You must fill out fields marked with: *

    Librarian details
    Your details
    Why are you recommending this title?
    Select reason:
    Insect Systematics & Evolution — Recommend this title to your library
  • Export citations
  • Key

  • Full access
  • Open Access
  • Partial/No accessInformation