37.036 Coleophora conyzae (Spikenard Case-bearer)
ws: 12-16mm (MBGBI3); Jun-Jul; ploughmn's spikenard (Inula conyza), common fleabane (Pulicaria dysenterica), hemp-agrimony (Eupatorium cannabinum); NS-B - on chalk or limestone downland in S.England and S.Wales
Coleophora conyzae §1 male
ID: Group G - Forewing streaked, with oblique streaks to costa, without scattered fuscous scales; antenna white unmarked (dotted fuscous below in female); V12 (subcostal) marked; fine (ochreous) line along middle of cell (note that the veins are marked ochreous and the ground colour is white). There are 4 species in Group G with white unmarked antennae: In C.pennella and C.lineolea V12 is unmarked and C.inulae lacks the fine line along middle of cell - so it is possible that external features are sufficient to identify this species without genital dissection - (but I'm not yet sure I could do so with much confidence).
Male genitalia: Sacculus with a distinct anterolateral angulation but no distinct anterior process; sacculus with a distinct long, narrow posterior process, directed laterally parallel with the valva and as long as the lateral border of the sacculus; aedeagus without teeth, with a small bundle of cornuti in the vesica.
Female genitalia: ductus bursae with a spiculate section immediately adjacent to the subgenital plate; spiculate section ~2x length of subgenital plate; incision in posterior margin of subgenital plate <½ length of subgenital plate and "V"-shaped; introitus about as broad as ductus bursae.
Male genitalia: Sacculus with a distinct anterolateral angulation but no distinct anterior process; sacculus with a distinct long, narrow posterior process, directed laterally parallel with the valva and as long as the lateral border of the sacculus; aedeagus without teeth, with a small bundle of cornuti in the vesica.
Female genitalia: ductus bursae with a spiculate section immediately adjacent to the subgenital plate; spiculate section ~2x length of subgenital plate; incision in posterior margin of subgenital plate <½ length of subgenital plate and "V"-shaped; introitus about as broad as ductus bursae.
Dissection
Male genitalia
Female genitalia
§1 Hamstreet, Kent; 11/07/2018; male; fw 6.9mm; to light
§2 Cranwich Heath; 05/07/2018; female; fw 7.0mm; to light
All images © Chris Lewis
§2 Cranwich Heath; 05/07/2018; female; fw 7.0mm; to light
All images © Chris Lewis
Page published 01/08/2018 (§1) | §2 added 09/01/2019
