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Home » Guide » Arthropods (Arthropoda) » Hexapods (Hexapoda) » Insects (Insecta) » Walkingsticks (Phasmida) » Timematidae » Timema » indeterminate poppense/douglasi females (Timema indeterminate poppense/douglasi females)
Photo#961616
Timema - female
Copyright © 2014 Petalpatch

Timema - Female
Whitethorn, Humboldt County, California, USA
August 25, 2011
Guessing T. poppense due to location and lack of male attendant.
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Contributed by Petalpatch on 21 July, 2014 - 1:07pm
Last updated 30 April, 2018 - 2:01pm

Moved
Moved from Timema.
… Aaron Schusteff, 14 April, 2018 - 12:26am login or register to post comments

Hello Petalpatch. Welcome to BugGuide! :-)
Nice find and images. Hope you get to see more Timema (and other interesting arthropods) and post furthur finds on BugGuide.

Regarding this post, I think you may have meant T. douglasii rather than T. poppense, as the former is the parthenogenetic species that would be inferred here (given the dark green lateral stripes and your location) if there were no males present in the population (mate-guarding or otherwise...see the Timema info page for more details). But the emphasis here is on a population and not a sighting of a single unaccompanied female. An informal rule of thumb given by "Timema-ologist" Christina Sandoval is that if at least 5 females are seen in a given locale with no attendant males, then it's likely you are observing a parthenogenetic species.

Of course, the only way to really know is to make detailed observations of many individuals in a local population over a prolonged period of time.

In this instance, the most we can say is that your post is either T. poppense or T. douglasii.
… Aaron Schusteff, 10 August, 2014 - 3:20am login or register to post comments

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