Enneboeus marmoratus - please help look for this little beetle species in California

Last summer, I photographed an unfamiliar, small, dark beetle at our balcony lights in San Francisco. An expert (Matt Gimmel) eventually identified it as Enneboeus marmoratus, a new species for the US, and published a paper on the find:




I again found quite a few of these beetles at a black light placed on our balcony recently (a year later), so this appears to be a persistent and even abundant introduced species here in Noe Valley. The question is how widespread is this beetle in in the Bay Area or beyond? If you look for insects at lights or put out a black light for moths, etc. - please consider looking for and photographing small (3-4 mm) dark beetles with somewhat vague dark red patches of hairs on the back of the elytra, somewhat resembling a dark lady beetle to my eyes (see links above). Thanks!

@kueda @loarie @gyrrlfalcon @tiwane @finatic @damontighe @silversea_starsong @catchang @moonlittrails @owicki @rjadams55

Publicado el septiembre 27, 2018 05:36 TARDE por kschnei kschnei


Very cool @kschnei! I'll be on the lookout.

Publicado por tiwane hace más de 5 años

so cool @kschnei !

Publicado por alexs_test19 hace más de 5 años

@kschnei - would collections be useful if we encounter it? Ethanol storage or another preferred method?

Publicado por damontighe hace más de 5 años

Thank you for posting this. I will certainly keep my eyes open.

Publicado por rjadams55 hace más de 5 años

@damontighe : yes, collecting them would be ideal (ethanol is fine). FWIW, I've mostly encountered them on warm, late summer and fall nights (not a common situation in San Francisco, but we get them occasionally)... I assume that folks are more likely to be out there looking and photographing on warm evenings anyway....

Publicado por kschnei hace más de 5 años

Thanks - I am happy to photograph anything that I can see!

Publicado por gyrrlfalcon hace más de 5 años

Really cool. It's not even from a Family that I've seen. But I'll be looking for it down south here.

Publicado por finatic hace más de 5 años

will keep an eye out

Publicado por loarie hace más de 5 años

@kschnei, curious that you are only acknowledged in the publication ... and not a co-author given that you found this critter and got it into the right hands. Just raising a question about the role of ‘citizen scientists’ in the discovery process. I don’t have the answers. A new sp. observation in the US seems like leaps and bounds above the typical observation of a species in a new location, etc. And, of course, I’ll keep an eye out. Cheers.

Publicado por metsa hace más de 5 años

@metsa : Matt generously offered to make me an author on this paper, but I declined and asked to be in the acknowledgements instead. I think it might be a "gray area", but I felt that finding a beetle I couldn't identify and getting help from an expert didn't qualify for authorship in my mind. I've authored or been a co-author on scientific papers in the past and I feel like I would need to make more of a substantive contribution to the body of the paper...

Publicado por kschnei hace más de 5 años

Looks like @catchang found this species in Oakland!

So perhaps it has spread throughout the Bay Area? Will be very curious if folks find it elsewhere in California.

Publicado por kschnei hace más de 5 años

@damontighe Do you have ethanol and collection tubes? I’ll try tonight as well.

Publicado por catchang hace más de 5 años

@catchang I've got tubes and 98% Ethanol

Publicado por damontighe hace más de 5 años

Another great example of the power of the iNat community! :)

Publicado por kschnei hace más de 5 años

Collection completed.

Publicado por catchang hace más de 5 años

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