unidentified wasp nest? nocturnal wasps?
dear Whats That Bug,
I’m an American living in the Northeast of Brazil (near Fortaleza, Ceara) and am encountering all kinds of bugs Ive never seen before- a lot which i was able to identify using your site, thx.
But after looking along while trying to identify a wasps nest that is in a pitanga (brazilian cherry tree) near our back door.
As pictured its an unusual looking saucer like nest and all the wasps are covering its underside. I havent been able to get too close to get a good close up of one (just too darn many and dont want to risk getting swarmed) they seem to be about an inch long or so and blackish with amber wings? the only refernece to anything similar on the web indicated they might be nocturnal wasps? any idea what these guys are and if they are dangerous . generally we have a lot of wasps here that build smaller nests , potter, mud, paper, etc. and we let them be. These are different in their numbers, the nest I guess is about 10 inches across and it looks like its holding hundreds of these guys. Our inclination is to leave them alone but we dont want swarms outside our backdoor or a growing population if they are not beneficial. Perhaps you can help us i.d them.
R. Artiles

Brazilian Nocturnal Wasps:  genus Apoica

Brazilian Nocturnal Wasps: genus Apoica

hey WTB,
just thought id send an update even though you may have not even looked at my email yet or thought it of interest enough to pursue– I believe we do have a nest of a wasp which IS primarily nocturnal- i have been seeing them on the windows at night- in the day they jus sit on that nest like in the photos and although i dont have a good close up picture of one yet . i think i have i.d’d them as the genus APOICA LEPELETIER .. if i get a good photo i’ll send it and you can tell me what you think. love the site, thx. Rodney.

Hi Rodney,
We are sorry we didn’t get to your original letter, but it arrived during our site migration. We agree that your Nocturnal Wasps are in the genus Apoica, but we are not certain of the species. Your photo looks similar to Apoica pallens, a species that we originally posted in a letter two and a half years ago.

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