RECORD: Darwin, C. R. 1868.05.27. Onitis furcifer. CUL-DAR81.26. Edited by John van Wyhe (Darwin Online, http://darwin-online.org.uk/)

REVISION HISTORY: Transcribed by Christine Chua and edited by John van Wyhe 2.2022. RN1

NOTE: See record in the Darwin Online manuscript catalogue, enter its Identifier here. Reproduced with permission of the Syndics of Cambridge University Library and William Huxley Darwin. The volumes CUL-DAR80-86 contain material for Darwin's book Descent of man (1871).

See letter from E. W. Janson to Darwin 25 May 1868. Correspondence vol. 16, pp. 537-538.


[26]

May 27/68/ Onitis furcifer no strid. on coxæ of hind legs of ♂ or ♀ or any part. The spurs on femur of ant. legs seem to act as guides or protection to tibia when drawn inwards - The two spikes on thorax, I can make out no use for.

Phanæus carnifex. no strid. in ♂ - thighs resplendent. on coxa of Post legs.

♀ Typhœus with just as good a strid. as male or better & stridulate by using hind legs}

Oryctes nasicornis ♂ no stri.} on coxa

Bubas bison do do

 

Geotrupes stercorarius both sexes have strid. all

Copris cantharis♂ 0 strid.

Bolbocerus farctus 0 Lethrus cephalotes 0

[26v]

Put * to Chiarig. The strid: [appal] is probably not sexual. At least Dr L (wissen) found it in both sexes of Ge. stercorarius (?)

It is also present in both sexes of G. & of Typhæus

There is no strid: apparatus on the coxa of the hind legs as the males of ..... Copris Phanæus.

Put in note to 2 means Geotrupes & Oryctes - in latter possibly sexual.

I might get from E. W. Janson of Zo Museum some other species of Geotrupes, both sexes & of Dynastidæ

 


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Citation: John van Wyhe, ed. 2002-. The Complete Work of Charles Darwin Online. (http://darwin-online.org.uk/)

File last updated 25 September, 2022