It’s the size of a full-stop, must be interesting

I rather blithely tell that I usually ignore large showy insects like butterflies, moths, grasshoppers and dragonflies. They’re all very pretty, yes, but on the whole they’re mainly common and widespread species — I feign indifference to them.

But when a tiny speck of nothingness the size of a full-stop lands on my magazine in the garden and skitters down the page like a deranged apostrophe, I simply must scoop it up and see what it is.

Sericoderus lateralis, female (they're all females).

Sericoderus lateralis, female (they’re all females).

Here it is. Not a brilliant picture I know, but the best I can do at the moment, photographed on my phone down the barrel of the small cheap microscope I keep in the kitchen. And it’s only just over three-quarters of a millimetre long.

Sericoderus lateralis is ‘local’, according to various books; I’ve only found it a few times, but I suspect its supposed scarcity partly reflects the general scarcity of nutcase entomologists willing to look at something this tiny. Maybe there are fewer mouldy haystacks about now, this being the usual habitat mentioned in various Victorian monographs.

It’s a female, by the way — 10 antennal segments. Males of Sericoderus have 11 segments. But then, they’re all females in this species, it’s parthenogenetic; males are unknown, so the females lay unfertilized virgin-birth eggs that give rise to wholly female populations. Weird.

3 responses to “It’s the size of a full-stop, must be interesting

  1. My dear Mr. Jones,
    I’m afraid I had to Google the term “full-stop”. On OUR side of the pond, we seem to call it a “period”.

  2. Pingback: Expiscor (7 October 2013) | Arthropod Ecology

  3. Wonderful! There is a recent paper on it in case you did not know
    Arthropod Structure & Development
    Volume 39, Issue 1, January 2010, Pages 52–69
    Developmental stages of the hooded beetle Sericoderus lateralis (Coleoptera: Corylophidae) with comments on the phylogenetic position and effects of miniaturization

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