Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada
Register
·
Log In
Home
Guide
ID Request
Recent
Frass
Forums
Donate
Help
Clickable Guide
Calendar
Upcoming Events
Registration
is open for the
2024 BugGuide gathering in Idaho
July 24-27
Moth submissions
from
National Moth Week 2023
Photos of
insects
and
people
from the
2022 BugGuide gathering in New Mexico
, July 20-24
Photos of
insects
and
people
from the
Spring 2021 gathering in Louisiana
, April 28-May 2
Photos of
insects
and
people
from the
2019 gathering in Louisiana
, July 25-27
Photos of
insects
and
people
from the
2018 gathering in Virginia
, July 27-29
Previous events
Taxonomy
Browse
Info
Images
Links
Books
Data
Home
» Guide »
Arthropods (Arthropoda)
»
Hexapods (Hexapoda)
»
Insects (Insecta)
»
True Bugs, Cicadas, Hoppers, Aphids and Allies (Hemiptera)
»
True Bugs (Heteroptera)
»
Pentatomomorpha
»
Pentatomoidea
»
Stink Bugs (Pentatomidae)
»
Pentatominae
»
Pentatomini
»
Thyanta
»
subgenus Thyanta (Thyanta subgenus Thyanta)
»
Red-shouldered Stink Bug (Thyanta custator)
Photo#491054
Copyright © 2011
Libby & Rick Avis
Thyanta custator
Lillloett, British Columbia, Canada
October 8, 2010
Dryland habitat - on Rabbit Bush
tag
·
login
or
register
to post comments
Contributed by
Libby & Rick Avis
on 14 February, 2011 - 3:10pm
Last updated 1 December, 2017 - 3:52pm
please post them to family level
it's better to have everything at the comfortable level of identification than fishing out misIDed stuff...
(again, the correct spelling is
Holcostethus abbreviatus
, not
abbreviata
)
Moved from
Holcostethus
.
…
v belov
, 14 February, 2011 - 3:27pm
login
or
register
to post comments
ID confirmed by D.B. Thomas: T. custator
…
v belov
, 15 February, 2011 - 8:40am
login
or
register
to post comments
T. pallidovirens
I have just also posted this one on the E-Fauna site at the University of BC. It was identified as Thyanta pallidovirens, not custator, By Geoff Scudder, UBC Dept of Zoology.
I understand that custator and pallidovirens are quite similar, but custator doesn't appear on the current BC list, whereas pallidovirens does. Wanted to run this by you before I move this photo on the BG site.
…
Libby & Rick Avis
, 22 March, 2014 - 4:54pm
login
or
register
to post comments
here's what Don Thomas had to say:
"This is a masters thesis waiting to be written by someone interested in molecular taxonomy. Dave Rider did the best he could to straighten out this problem in his revision of
Thyanta
. Assuming that
T. pallidovirens
and
T. custator
are distinct species, each has morphotypes.
"When Ruckes revised the genus he considered the common U.S. species to be
T. pallidovirens
with
T. custator
restricted to Florida. He then divided
T. pallidovirens
into four subspecies.
"Ueshima first published that the California specimens of '
T. pallidovirens
' have a different chromosome number (2n = 16) than specimens of '
T. pallidovirens
' from the Midwest (2n = 14). Dave and I managed to karyotype a few more specimens, but none from California.
"Dave decided that the common U.S. species should be called
T. custator
and that
T. pallidovirens
is only found in the western U.S. So Dave kept the name
T. pallidovirens
mainly because of the purported chromosome difference. There are two morphotypes:
T. pallidovirens spinosa
with pointed humeri mainly found in Arizona and desert areas of southern California; and
T. pallidovirens pallidovirens
which are western populations mainly in California that do not have spiny humeri and do not have a row of spots on the abdominal segments near the spiracles.
"I suspect that Geoff has specimens from BC identified
T. pallidovirens pallidovirens
. But were those identified by Ruckes or by Rider? Most of the stuff I have seen from the northwest have the spots, and therefore fall under
T. custator accera
, whereas most of the stuff from California do not have the spots. So with the idea that these are probably just subspecies at most, and therefore should have a geographical component, I restrict the name
pallidovirens
to the California population.
"Does this make sense?"
…
v belov
, 31 March, 2014 - 11:03am
login
or
register
to post comments
Thanks for the follow-up!
L
…
Libby & Rick Avis
, 7 April, 2014 - 4:54pm
login
or
register
to post comments
thank you so much --
i'll run it by Don Thomas, in turn.
what's the URL of that E-Fauna site? do they identify bugs from BC only? if experts like Geoff Scudder are active there, i'll be recommending it to BG users; frankly, we have many pics of western bugs here on BG that i would love to ask Dr Scudder about....
…
v belov
, 22 March, 2014 - 6:05pm
login
or
register
to post comments
Comment viewing options
Flat list - collapsed
Flat list - expanded
Threaded list - collapsed
Threaded list - expanded
Date - newest first
Date - oldest first
10 comments per page
30 comments per page
50 comments per page
70 comments per page
90 comments per page
Select your preferred way to display the comments and click 'Save settings' to activate your changes.