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Home » Guide » Arthropods (Arthropoda) » Hexapods (Hexapoda) » Insects (Insecta) » Mayflies (Ephemeroptera) » Furcatergalia » Scapphodonta » Hacklegilled Burrower Mayflies (Potamanthidae) » Anthopotamus » Anthopotamus distinctus
Photo#2266688
Possible Walker's Tusked Sprawler - Anthopotamus distinctus
Copyright © 2023 jugbayjs

Possible Walker's Tusked Sprawler - Anthopotamus distinctus
Travilah, Md, Montgomery County, Maryland, USA
July 8, 2023

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Possible Walker's Tusked Sprawler - Anthopotamus distinctus Possible Walker's Tusked Sprawler - Anthopotamus distinctus Possible Walker's Tusked Sprawler - Anthopotamus distinctus Possible Walker's Tusked Sprawler - Anthopotamus distinctus
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Contributed by jugbayjs on 10 July, 2023 - 6:43am
Last updated 31 May, 2025 - 12:11pm

Moved
Moved from Hexagenia.
… Ken Wolgemuth, 31 May, 2025 - 12:11pm login or register to post comments

Anthopotamus distinctus
Hi jugbayjs,

You and Roger were on the right track in the first place. This female subimago is Anthopotamus, though not verticis. (The females of that species lack darkened crossveins in the hindwings, and show only slight darkening of crossveins in the forewings.)

Your specimen has strongly infuscated crossveins in both sets of wings, which narrows the candidates to A. distinctus and A. neglectus. The females of distinctus have compound eyes that are described as "very small," and neglectus females have compound eyes that are described as "tiny," which is the smaller eye size. (See Bae & McCafferty 1991.) I think we are in the "very small" category here. And, yes, this specimen has lost one of its tails.

Best,
Lloyd
… Lloyd Gonzales, 31 May, 2025 - 11:58am login or register to post comments

Moved
Moved from Anthopotamus.
… Roger Rohrbeck, 29 May, 2024 - 12:18am login or register to post comments

Moved
Moved from Mayflies.
… Roger Rohrbeck, 12 July, 2023 - 5:53pm login or register to post comments

Anthopotamus verticis
Yes, I believe this female imago to be of genus Anthopotamus. Incidentally, it is seemingly missing one of its three tails.
… Roger Rohrbeck, 12 July, 2023 - 5:47pm login or register to post comments

 
Hexagenia
Oh my goodness, must have been napping or something when worked this one, as I now believe this female subimago to be of genus Hexagenia.
… Roger Rohrbeck, 29 May, 2024 - 12:14am login or register to post comments

Moved
Moved from ID Request.
… Ken Wolgemuth, 10 July, 2023 - 8:01am login or register to post comments

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