12.039 Monopis crocicapitella (Pale-backed Detritus Moth)
ws: 10-16mm; Jun-Oct; locally common in S.England especially near the sea.
Monopis crocicapitella §2 male
M.crocicapitella is very similar to M.obviella. They can be separated by the following features:
1) Dorsal streak pale yellow in obviella, ochreus in crocicapitella.
2) Pale irroration limited to whitish scales near costa in obviella, more generalised especially in the apical region in crocicapitella.
3) Hindwing dark fuscous in obviella, pale grey in crocicapitella.
4) Valvae of male genitalia shorter and broader with a more rounded apex in obviella, longer and narrower with a more angular apex in crocicapitella. length/breadth of valva ~2.1-2.3 in obviella 2.8-2.9 in crocicapitella.
5) Aedeagus blob-ended at apex in obviella, more tapered in crocicapitella.
6) Female genitalia with regular band of cornuti in bursa copulatrix of obviella, a few large cornuti and others irregular and scattered in crocicapitella.
See Monopis for more detail
1) Dorsal streak pale yellow in obviella, ochreus in crocicapitella.
2) Pale irroration limited to whitish scales near costa in obviella, more generalised especially in the apical region in crocicapitella.
3) Hindwing dark fuscous in obviella, pale grey in crocicapitella.
4) Valvae of male genitalia shorter and broader with a more rounded apex in obviella, longer and narrower with a more angular apex in crocicapitella. length/breadth of valva ~2.1-2.3 in obviella 2.8-2.9 in crocicapitella.
5) Aedeagus blob-ended at apex in obviella, more tapered in crocicapitella.
6) Female genitalia with regular band of cornuti in bursa copulatrix of obviella, a few large cornuti and others irregular and scattered in crocicapitella.
See Monopis for more detail
§1 Westcliff-on-sea, Essex; 29/06/2010; male; fw 5.7mm
§2 Westcliff-on-sea, Essex; 03/08/2010; male; fw 5.5mm
§3 Westcliff-on-sea, Essex; 26/05/2011; male
§4 Westcliff-on-sea, Essex; 11/09/2011
§5 St Marys, Isles of Scilly; 17/10/2016; male; fw 5.4mm; to light
§6 St Marys, Isles of Scilly; 19/10/2018; female; fw 6.1mm; to light
All images © Chris Lewis
§2 Westcliff-on-sea, Essex; 03/08/2010; male; fw 5.5mm
§3 Westcliff-on-sea, Essex; 26/05/2011; male
§4 Westcliff-on-sea, Essex; 11/09/2011
§5 St Marys, Isles of Scilly; 17/10/2016; male; fw 5.4mm; to light
§6 St Marys, Isles of Scilly; 19/10/2018; female; fw 6.1mm; to light
All images © Chris Lewis
Page published Feb 2011 (§1&2) | §3 added 28/05/2011 | §4 added 17/09/2011 | §5 added 12/11/2016 | §6 added 27/11/2018
