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Post by Deleted on Sept 10, 2017 7:21:36 GMT -8
 After a poor couple of decades in northern England atalanta has had 2 wonderful years up here with adults and early stages being very abundant, a lovely species. |
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Post by Deleted on Sept 10, 2017 7:22:21 GMT -8
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Post by Deleted on Sept 10, 2017 7:23:00 GMT -8
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Post by eurytides on Sept 19, 2017 19:29:04 GMT -8
Do you have good ways of telling apart the sexes aside from looking for claspers?
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Post by Deleted on Sept 20, 2017 1:24:42 GMT -8
Its very difficult with this one, although I have always found that very large specimens are always females.
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Post by eurytides on Sept 22, 2017 17:18:47 GMT -8
Yeah, but there is overlap, so that characteristic is not 100% reliable, and neither is using abdomen size. I check for claspers, but they are small and hard to see. I also use the front forelegs, but again, it's not easy (but easier than looking for claspers). Male forelegs have more hairs and fewer segments. See page 2 of this article lepidopteraresearchfoundation.org/journals/05/PDF05/05-001.pdfI was just wondering if you had any simpler methods for sexing these leps. In your first photo, I would hazard a guess that the top row are females and the other 3 males? |
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Post by Deleted on Sept 23, 2017 8:06:33 GMT -8
I'd need my magnifying glass, the one pictured alone is I think a female
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Post by eurytides on Sept 23, 2017 20:22:14 GMT -8
Actually, the one pictured singly looks like a male to me. The two that look like females to me, I thought so mainly based on their slightly larger size (not super reliable of course) and slightly disproportionately thicker red bands on the hindwings.
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