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Letter 6530

Crotch, G. R. to Darwin, C. R.

[after 16 October 1868]

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    Lists stridulating organs of various Coleoptera.

Transcription

Stridulating organs of various Coleoptera.

1 Cychrus rostratus edge of elytra

2 Crioceris asparagi pygidium & elytron

3 Clythra 4-punctata pygidium & elytron

4 Crioceris brunnea "

5 — 12-punctata "

6 — cyanella "

7 — melanopa "

8 Zeugophora subspinosa no organ

9 Blethisa multipunctata

10 Cychrus ♂ elytron

11 Pelobius Hermanni pyg & ely

12 Cryptorhynchus Lapathi elytron

13 Acalles argillosus Teneriffe elytron

14 Cript. Lapathi ♂

15 Ceuth Echii. elytra.

16 acalles argillosus ♀

17 Elaphrus uliginosus ♀

18 Necrophorus vespillo ♂ ♀

19 Aromia moschata

20 Saperda carcharias

21 strangalia elongata

22 Mesosa nubila

23 Clytus arietis

24 Agapanthia lineatocollis

25 Pachyta collaris

26 grammoptera ruficornis

27 clytus arietis

28

The clythra has not been noticed before I believe

Elater purpureus 187. 350. (nec loci) = Corymbites haematodes Fab. 1776. Cand.

    Footnotes Add

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    f1 6530.f1
    The date is established by the relationship between this letter and the letter from Francis Darwin to Emma Darwin, [after 16 October 1868]. Francis wrote that Crotch would send specimens mounted on card. This list was probably sent with the specimens; the numbers evidently describe matching numbered specimens, none of which has been found in the Darwin Archive--CUL. In Descent 1: 379 n. 70, CD thanked Crotch for sending prepared specimens of various beetles.
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    f2 6530.f2
    Cychrus rostratus is now C. caraboides.
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    f3 6530.f3
    Clythra 4-punctata: i.e. Clytra quadripunctata. In Descent 1: 379, CD mentioned the location of stridulating organs in this species.
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    f4 6530.f4
    Crioceris brunnea: i.e. Lilioceris merdigera.
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    f5 6530.f5
    Crioceris 12-punctata: i.e. C. duodecimpunctata (the spotted asparagus beetle).
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    f6 6530.f6
    Crioceris cyanella is now Oulema gallaeciana.
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    f7 6530.f7
    Crioceris melanopa is now Oulema melanopus (the cereal leaf beetle).
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    f8 6530.f8
    Pelobius hermanni is now Hygrobia hermanni.
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    f9 6530.f9
    Crotch probably refers to Ceutorhynchus echii, now Mogulones geographicus. For more on stridulation in this species and other weevils, see Lyal and King 1996.
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    f10 6530.f10
    In Descent 1: 378--9, CD discussed the location of the stridulating organs in Necrophorus.
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    f11 6530.f11
    Strangalia elongata is now S. maculata.
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    f12 6530.f12
    Mesosa nubila is now M. nebulosa.
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    f13 6530.f13
    Agapanthia lineatocollis is now A. villosoviridescens.
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    f14 6530.f14
    Pachyta collaris is now Dinoptera collaris.
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    f15 6530.f15
    In Descent 1: 379, n. 70, CD noted Crotch's remark that the power of stridulation had not been previously observed in Clythra. On the synonymy of Elater purpureus with Corymbites haematodes, see Candeze 1863, pp. 95--6. This species is now Anostirus purpureus. Nec loci: neither place.
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