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 Microcoryphia from Suriname - cf. Meinertellus (Meinertellidae)
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| Auke |
Posted on 11-07-2016 21:01
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Member Location: Suriname (South America) Posts: 302 Joined: 21.10.12 |
A Microcoryphia (or should I write Archeognatha?) from Suriname. All help with ID appreciated.
Auke attached the following image:  [159.71Kb] Edited by Auke on 12-07-2016 23:56 Your invert guide in Suriname. |
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| Auke |
Posted on 11-07-2016 21:02
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Member Location: Suriname (South America) Posts: 302 Joined: 21.10.12 |
And a close up of the anterior part.
Auke attached the following image:  [148.14Kb] Your invert guide in Suriname. |
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| Amaryllid |
Posted on 12-07-2016 09:46
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Member Location: France Posts: 8 Joined: 18.03.16 |
Hello Auke, There is no scale on the antenna, so i can confirm the family Meinertellidae (the only Microcoryphia family in South America). There are only two genera in the north of South America: Meinertellus and Neomachilellus. (+2 others in Argentina and Chile & one more in Juan Fernandez island, Chile) These two genus are very similar. Meinertellus have pulvilli / scopulae (compact brush of short dark hairs under apex of last tarsal segment), Neomachilellus have not. I believe that the lateral ocelli (under the compound eyes) are oval in Neomachilellus and "sole shaped" (constricted middle) in Meinertellus. But we can't see pulvilli nor ocelli on this picture. May be the habitus of the two genus are different. But I have few picture to compare. There are pictures in a video here: Bristletail Research by Dr. Yanoviak http://www.youtube.com/watch?v=tsNZtVfWUOk (at 55'' and 1' ) https://canopyants.net/research/gliding-arthropods/bristletail-videos/ (identified as Meinertellus on the web page. Picture: see 2nd video) Yanoviak, S. P. ; Kaspari, Michael ; Dudley, Robert. 2009. Gliding hexapods and the origins of insect aerial behaviour. Biology Letters, 5: 510-512. http://rsbl.royalsocietypublishing.org/content/5/4/510 Yanoviak has experimented mainly with Meinertellus, in Peru (table 1 in above article) I believe the genus on the videos and your's is the same (white pattern on the thorax and abdomen). So, probably Meinertellus. (See my WWW for biblio re Microcoryphia) Regards, Pascal Edited by Amaryllid on 12-07-2016 09:50 |
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| Auke |
Posted on 12-07-2016 23:56
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Member Location: Suriname (South America) Posts: 302 Joined: 21.10.12 |
Thank you for your extensive reply! Filed as Meinertellidae cf. Meinertellus. Next time, I hope to take some lateral and frontal pictures for a more secure ID. Auke Edited by Auke on 12-07-2016 23:58 Your invert guide in Suriname. |
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