DragonflyPix

Gomphe à crochets (Onychogomphus uncatus)

• English name: Large Pincertail
• German name: Grosse Zangenlibelle
• French name: Gomphe à crochets
• Dutch name: Grote tanglibel
• Swedish name: N/A
• Norwegian name: N/A
• Finnish name: N/A
• Danish name: N/A
• Italian name: Gonfo pinzato
• Czech name: N/A
• Slovenian name: Rumeni peščenec
• Bulgarian name: N/A

Gomphe à crochets (Onychogomphus uncatus)

Distribution map Onychogomphus uncatus

Map data based on J.-P. Boudot & V. J. Kalkman (eds.),
Atlas of the European Dragonflies and Damselflies


General • a medium-sized black-and-yellow species which in Europe occurs only in the South-West
Classification • suborder: Anisoptera (dragonflies); family: Gomphidae
Scientific name Onychogomphus uncatus (Charpentier, 1840)
Distribution • click or tap the Map button above
Notes • gomphids are 'sitters': they spend a lot of time perched on rocks and vegetation
Habitat • fairly fast-flowing rocky streams
Dimensions • typical body length: 50-53 mm; hindwing: 29-33 mm
Both sexesHead➤ like in all other gomphids, the eyes are widely separated
  • the eyes are typically grey-blue
  ➤ there is no yellow bar on the black vortex
 Thorax➤ the black lines on the side of the thorax are wide, leaving a thin antehumeral stripe, and they don't meet the mid-dorsal black stripe
MaleAbdomen➤ there is no subterminal knob on the lower appendage
Photographs • all of our photos below were made in Italy and Spain

Line DrawingLineDrawing: the male's abdomen in dorsal view, and the male's head, thorax and abdomen in lateral view.

Onychogomphus forcipatus (left) and O. uncatus (right)
In O. forcipatus note the yellow bar on the vortex and the two black shoulder stripes which are both connected to the mid-dorsal black stripe.

Onychogomphus forcipatus (left) and O. uncatus (right)
In O. uncatus the two black shoulder stripes are typically broad and parallel, while in O. forcipatus these stripes are thinner and wavier, and are both connected to the mid-dorsal black stripe.

Onychogomphus forcipatus (left) and O. uncatus (right)
The lower appendage bears a subterminal knob in O. forcipatus but not in O. uncatus.

Large Pincertail (Onychogomphus uncatus)
Male abdomen in dorsal view
Drawing by Ruth Ilka Nüß
© 2013 Lehmann & Nüß and DragonflyPix.com

Large Pincertail (Onychogomphus uncatus)
Male head, thorax and abdomen in lateral view
Drawing by Ruth Ilka Nüß
© 2013 Lehmann & Nüß and DragonflyPix.com

Click on a thumbnail to display the photograph (at 1200 x 800 pixels) in a new window.

Onychogomphus uncatus, thumbnail 1 / 20
Gomphe à crochets (Onychogomphus uncatus) ♂

1 / 20; PhotoID: Dr117 17/07/2009 15:08 Italy F8 1/400 180mm ISO100 Canon50D -Crop -Flash MF
Onychogomphus uncatus, thumbnail 2 / 20
Gomphe à crochets (Onychogomphus uncatus) ♂

2 / 20; PhotoID: Dr118 17/07/2009 15:27 Italy F8 1/250 180mm ISO100 Canon50D -Crop -Flash MF
Onychogomphus uncatus, thumbnail 3 / 20
Gomphe à crochets (Onychogomphus uncatus) ♂

3 / 20; PhotoID: Dr160 03/07/2014 14:54 Italy F9.5 1/250 180mm ISO200 Canon7D -Crop -Flash MF
Onychogomphus uncatus, thumbnail 4 / 20
Gomphe à crochets (Onychogomphus uncatus) ♀

4 / 20; PhotoID: Dr161 21/07/2009 17:06 Spain F8 1/80 180mm ISO100 Canon50D -Crop -Flash MF
Onychogomphus uncatus, thumbnail 5 / 20
Gomphe à crochets (Onychogomphus uncatus) ⚤

5 / 20; PhotoID: Dr403 13/06/2015 16:39 Spain F8 1/400 180mm ISO400 Canon7D2 -Crop -Flash MF
Onychogomphus uncatus, thumbnail 6 / 20
Gomphe à crochets (Onychogomphus uncatus) ♂

6 / 20; PhotoID: Dr404 13/08/2013 13:34 Italy F8 1/90 180mm ISO200 Canon7D -Crop -Flash MF
Onychogomphus uncatus, thumbnail 7 / 20
Gomphe à crochets (Onychogomphus uncatus) ♀

7 / 20; PhotoID: Dr407 24/07/2015 11:54 Italy F8 1/250 180mm ISO200 Canon7D2 -Crop -Flash MF
Onychogomphus uncatus, thumbnail 8 / 20
Gomphe à crochets (Onychogomphus uncatus) ⚤

8 / 20; PhotoID: Dr408 24/07/2009 18:01 Spain F5.6 1/320 180mm ISO100 Canon50D -Crop -Flash MF
Onychogomphus uncatus, thumbnail 9 / 20
Gomphe à crochets (Onychogomphus uncatus) ♀

9 / 20; PhotoID: Dr409 04/07/2017 11:12 Italy F8 1/400 180mm ISO200 Canon7D2 -Crop -Flash MF
Onychogomphus uncatus, thumbnail 10 / 20
Gomphe à crochets (Onychogomphus uncatus) ♂

10 / 20; PhotoID: Dr410 25/06/2011 12:31 Italy F8 1/500 180mm ISO200 Canon7D -Crop -Flash MF
Onychogomphus uncatus, thumbnail 11 / 20
Gomphe à crochets (Onychogomphus uncatus) ♂

11 / 20; PhotoID: Dr411 25/06/2011 13:10 Italy F8 1/800 180mm ISO200 Canon7D -Crop -Flash MF
Onychogomphus uncatus, thumbnail 12 / 20
Gomphe à crochets (Onychogomphus uncatus) ♂

12 / 20; PhotoID: Dr412 25/06/2011 14:16 Italy F8 1/320 180mm ISO200 Canon7D -Crop -Flash MF
Onychogomphus uncatus, thumbnail 13 / 20
Gomphe à crochets (Onychogomphus uncatus) ♂

13 / 20; PhotoID: Dr413 09/06/2015 15:23 Spain F8 1/250 180mm ISO400 Canon7D2 -Crop -Flash MF
Onychogomphus uncatus, thumbnail 14 / 20
Gomphe à crochets (Onychogomphus uncatus) ♀

14 / 20; PhotoID: Dr414 26/05/2018 16:24 Spain F8 1/400 180mm ISO200 Canon7D2 -Crop -Flash MF
Onychogomphus uncatus, thumbnail 15 / 20
Gomphe à crochets (Onychogomphus uncatus) ♀

15 / 20; PhotoID: Dr415 04/07/2017 11:24 Italy F8 1/500 180mm ISO200 Canon7D2 -Crop -Flash MF
Onychogomphus uncatus, thumbnail 16 / 20
Gomphe à crochets (Onychogomphus uncatus) ♀

16 / 20; PhotoID: Dr416 12/06/2011 14:05 Italy F8 1/200 180mm ISO200 Canon7D -Crop -Flash MF
Onychogomphus uncatus, thumbnail 17 / 20
Gomphe à crochets (Onychogomphus uncatus) ♀

17 / 20; PhotoID: Dr417 13/08/2013 11:44 Italy F8 1/250 180mm ISO200 Canon7D -Crop -Flash MF
Onychogomphus uncatus, thumbnail 18 / 20
Gomphe à crochets (Onychogomphus uncatus) ♂

18 / 20; PhotoID: Dr433 26/08/2013 13:18 Italy F11 1/250 180mm ISO200 Canon7D -Crop -Flash MF
Onychogomphus uncatus, thumbnail 19 / 20
Gomphe à crochets (Onychogomphus uncatus) ♀

19 / 20; PhotoID: Dr434 23/07/2015 16:11 Italy F8 1/60 180mm ISO400 Canon7D2 -Crop -Flash MF
Onychogomphus uncatus, thumbnail 20 / 20
Gomphe à crochets (Onychogomphus uncatus) ⚤

20 / 20; PhotoID: Dr435 24/07/2009 18:13 Spain F5.6 1/250 180mm ISO100 Canon50D -Crop -Flash MF