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Home » Guide » Arthropods (Arthropoda) » Hexapods (Hexapoda) » Insects (Insecta) » Beetles (Coleoptera) » Polyphaga » Series Cucujiformia » Tenebrionoidea » Wedge-shaped Beetles (Ripiphoridae) » Ripiphorinae » Macrosiagon » Macrosiagon pectinata
Photo#823238
Wedge-shaped Beetle (Macrosiagon sp.?) - Macrosiagon pectinata - male
Copyright © 2013 Kevin Metcalf

Wedge-shaped Beetle (Macrosiagon sp.?) - Macrosiagon pectinata - Male
Huntersville, Mecklenburg County, North Carolina, USA
August 11, 2013
Resembles other Macrosiagon in the guide, but note bright orange antennae, and extent of yellow down wings.
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Contributed by Kevin Metcalf on 12 August, 2013 - 7:04pm
Last updated 14 December, 2013 - 9:45am

male Macrosiagon pectinata --det. Z.H. Falin
his comment: "M. sayi has the first hind tarsomeres flared and deepely notched underneath."

Moved from Macrosiagon.
… v belov, 14 December, 2013 - 9:45am login or register to post comments

 
I was expecting M. flavipennis here!
I thought I could see the intimation of a semi-erect, excavated process near the posterior tip of the pronotum. And the (mostly) yellow elytra, yellowish-hyaline wings, and orange male antennae seemed to fit well with Rivnay's description of male flavipenne, and agree fairly well with the image below:



But Vaurie(1) states that in pectinata, the median lobe of the pronotum can be somewhat excavated...which I may have been misinterpreting as solely a flavipennis/fernalda indicator. Also, the vertex doesn't seem as "tall" as in typical flavipennis, and the frons looks convex (a la pectinata) rather than concave (a la flavipennis). And the tips of the elytra are black.

(As has been said before...these ripiphorids can be difficult!!!)
… Aaron Schusteff, 14 December, 2013 - 9:19pm login or register to post comments

Moved
Moved from Beetles.
… v belov, 8 September, 2013 - 8:17pm login or register to post comments

Macrosiagon sp.
Not sure of species. M. sayi? Just a guess...
… roar, 4 September, 2013 - 5:11pm login or register to post comments

Moved
Moved from ID Request.
… john and jane balaban, 24 August, 2013 - 10:52pm login or register to post comments

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