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Schizogenius longipennis-group
Photo#1718947
Copyright © 2019
margarethe brummermann
-
Schizogenius longipennis-group
Portal, Cochise County, Arizona, USA
August 14, 2019
Size: 5.2 mm vs 5.0 by pwm
Contributed by
margarethe brummermann
on 28 August, 2019 - 5:16pm
Last updated 27 November, 2021 - 11:12am
Moved
Moved from
Schizogenius litigiosus
based on my restudy of Whitehead's 1972 key to the species and a re-examination of Margarethe's specimen corresponding to this post. There are three Arizona members in this group:
longipennis, chircahuanus, neovalidus
. Male genitalia study is required for secure separation of species. Whitehead's distinguishing external characters for this group depend on color and perhaps body size. Unfortunately color can be quite variable depending on maturity status. Tentatively I favor
chircahuanus
based on smallest size (~ 5 mm or less), front femur reddish, pronotum reddish (not readily visible in photo). I weighed the pronotal color as a heavier trait than elytral color, athough I admit Whitehead did the opposite.
…
Peter W. Messer
, 27 November, 2021 - 11:12am
Moved
Moved from
Schizogenius
.
…
margarethe brummermann
, 4 January, 2020 - 11:30pm
Schizogenius litigiosus Fall [Withdrawn]
Withdrawn
…
Peter W. Messer
, 4 January, 2020 - 9:32am
Moved
Moved from
Ground Beetles
.
…
Curt Harden
, 10 September, 2019 - 2:45pm