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Arthropods (Arthropoda)
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Water, Rove, Scarab, Long-horned, Leaf and Snout Beetles (Polyphaga)
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Coccinelloidea
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Minute Hooded Beetles (Corylophidae)
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Sericoderus
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Sericoderus lateralis
Photo#1108714
Copyright © 2015
John Rosenfeld
Sericoderus -
Sericoderus lateralis
Allison Park, Allegheny County, Pennsylvania, USA
July 24, 2015
Size: 1.2 mm
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Contributed by
John Rosenfeld
on 24 July, 2015 - 8:39pm
Last updated 29 November, 2021 - 9:32pm
Moved
Moved from
Sericoderus
.
…
Brad Barnd
, 29 November, 2021 - 9:32pm
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Sericoderus lateralis (Gyllenhal), female
ID'd from specimen, now a photo-voucher. Size field updated. Thanks John.
So in the past with these, I've just said "Sericoderus sp." because truthfully as far as I know our species have not been reexamined in a modern revision. We have 5 species per American Beetles, the cosmo S. lateralis and 4 additional LeConte/Casey species. The Casey species are from California so we can generally exclude them. That leaves the two LeConte species (obscurus and subtilis) to be considered.
So as I was waffling about what to say about this one, I checked Bowestead's (1999) revision of Palaearctic Corylophidae. It turns out Sericoderus lateralis is a parthenogenic species (the other Palaearctic species is not), and he illustrates the spermatheca. I went searching and finally found the spermatheca, which matches Bowestead's figure.
…
Brad Barnd
, 29 November, 2021 - 9:32pm
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That's great!
must be a tiny spermatheca, thanks for spending so much time with my critters.
…
John Rosenfeld
, 29 November, 2021 - 10:32pm
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Very very small
Unfortunately I don't have the resources to do proper slide mounts, which would usually be done with such a small beetle. But fortunately, I was able to see enough under the stereomicroscope.
…
Brad Barnd
, 29 November, 2021 - 11:28pm
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