Oh my goodness! Unless you are a Tree of Life developer,
you really shouldn't be here. This page is part of our beta test site, where we
develop new features for the ToL, often messing up a thing or two in the
process. Please visit the official version of this page, which is available
here.
Differences Between Suborders of Beetles
David R. Maddison
The following table presents information on some of the differences
between the different suborders of beetles.
| |
Polyphaga |
Archostemata |
Myxophaga |
Adephaga |
|
cervical sclerites |
present |
absent |
absent |
absent |
|
propleuron |
internallized as a cryptopleuron, often fused to trochantin |
external, notopleural sutures usually visible |
external, notopleural sutures usually visible |
external, notopleural sutures usually visible |
|
hind coxae |
usually moveable |
moveable |
moveable |
fused to metasternum |
| first visible
abdominal sternum |
undivided |
undivided |
undivided |
divided by hind coxae |
|
wing apex spirally folded |
no |
yes |
yes |
no |
|
oblongulum cell in hind wing |
absent |
present |
present |
present |
| major transverse
wing fold crosses MP/CU |
no |
yes |
yes |
yes |
|
pygidial defense glands |
absent or present |
absent |
absent |
present |
|
testes |
multiple follicles |
multiple follicles? |
tubular |
tubular |
|
ovarioles |
telotrophic |
polytrophic |
? |
polytrophic |
| sex
chromosomes with parachute? |
yes (most species) |
no |
no |
no (possibly in a very few species) |
|
larval leg articles |
4+claw |
5+claw |
4+claw |
5+claw |
About This Page
David R. Maddison
Oregon State University
Page copyright © 1995 David R. Maddison
Page: Tree of Life
Differences Between Suborders of Beetles
Authored by
David R. Maddison.
The TEXT of this page is licensed under the
Creative Commons Attribution License - Version 3.0. Note that images and other media
featured on this page are each governed by their own license, and they may or may not be available
for reuse. Click on an image or a media link to access the media data window, which provides the
relevant licensing information. For the general terms and conditions of ToL material reuse and
redistribution, please see the Tree of Life Copyright
Policies.
This page is a note that is attached to a
branch of the Tree of Life.
ToL notes provide brief accounts of characteristics, short summaries,
commentaries, media files, taxonomic information, or identification tools
for a given group of organisms.
For a more detailed explanation of the different ToL page types, have a look at the
Structure of the Tree of Life page.
close box
Page Content
articles & notes
Treehouses
collections
people
options
Explore Other Groups
other Endopterygota
containing groups
subgroups
