a. Densely spiculate section in anterior half of ductus bursae
Circumferential spiculate section; ostial plate transverse; ostium a central slit; signum small > 37.017 Coleophora prunifoliae The densely spiculate section is posterior in all remaining species
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b. Solidly sclerotised mid-section of ductus bursae; ostial plate transverse; ostium posterior; introitus vaginae sclerotised
bi. Introitus ~parallel-sided and straight; Spiculate section of ductus bursae about same width as introitus
> 37.090 Coleophora artemisicolella bii. Introitus broadest at ostium, tapers and veers to the left towards dustus bursae; spiculate section of ductus bursae clearly narrower than introitus > 37.106 Coleophora paripennella |