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To Otto Staudinger   6 May [1868]

Summary

Asks about the ratio of male to female Lepidoptera.

Author:  Charles Robert Darwin
Addressee:  Otto Staudinger
Date:  6 May [1868]
Classmark:  DAR 147: 491
Letter no:  DCP-LETT-6164

From Otto Staudinger   15 May 1868

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Summary

Has often thought CD would find vast material for his ideas in study of entomology and Lepidoptera. His price-list of specimens proves only that collectors of Lepidoptera catch more males than females, not that there are more. He accounts for this by the less active habits of the females. [See Descent 1: 312.]

Author:  Otto Staudinger
Addressee:  Charles Robert Darwin
Date:  15 May 1868
Classmark:  DAR 82: A103-6
Letter no:  DCP-LETT-6174

To Otto Staudinger   20 May 1868

Summary

Thanks for information on sex ratios of Lepidoptera.

Agrees that entomologists have best means of proving derivation of species.

Author:  Charles Robert Darwin
Addressee:  Otto Staudinger
Date:  20 May 1868
Classmark:  DAR 147: 492
Letter no:  DCP-LETT-6192
Document type
letter (3)
Correspondent
Date
1868 (3)
letter