Is it all nice & simple in the nests of the small potter wasp Symmorphus

canadensis? Peter Hallett, ROM Natural History & UoT.

2 siblings species: Vivid to brilliant Yellow (NBS#82-83) are Symmorphus cristatus &

paleshades are S.canadensis.

Small bores (nest sites) have both species, larger bores have only one.

Yellowish Whites, pale Yellows & pale to light Orange Yellows (NBS 89-92, 70-73) are S.canadensis. The 10-20% of intermediate yellows (#83-86) are either species.

1011 nest sites in 2 diameters (gen. 2003)

Prepupal colours when the nest sites are sorted into the 2 sizes (generation 2003).

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ymb ymb mu ymb ymb mb ymb ymb ymu mu ymb ymb ymb wmu ymu wmu ymu cc cc wmwc

ymb ymu ymb ymb ymb ymb ymb ymb ymb ymb ymb ymb ymb ymb wmwc wmu wmwc wmu ymw wmu cc wmw

ymu ymc ymu ymu ymu ymb ymb ymb mu ymb ymu ymb ymb ymb ymb cc mu cc ymb cc mbc cc

ymb mb mb mbc ymu ymb ymb ymb ymb ymb ymb ymu ymb wmwc ymb cc wmwc ymu wmwc ymu mbc wmbc wmbc wmwc wmu ymbc wmwc wmwc lmwc

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ymu mb mb zmb ymu ymu ymb ymu ymu ymc ma ymb ymu ymu mwc mwc cc wmwc wmbc ymu wmu ymu wmb ymu wmwc wmbc wmb cc cc wmbc

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ymb ymu ymu ymu ymu ymu ymb ymb mb ymb ymb ymb mu cc ymb ymu mu ymu wmu cc wmbc wmu mw cc wmu wmbc wmu mbc wmu

ymb ymb mc ymu zmbc ymb ymb ymb ymb ymb ymb ymb ymb ymb wmbc cc ymb ymu wmu wmu cc wmbc lmu wmb wmwc lmwc wmbc wmwc

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ymb ymb ymb ymb ymu ymb ymb ymu ymu ymu cc wmwc ymu ymu mwc ymc zmu cc mwc wmwc lmwc wmu lmbc wmwc lmwc cc

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ymb mu ymb ymb mb ymu ymb ymu ymb ymu ymb ymb ymb ymb cc mu wmu cc rb wmwc wmu wmu ymb wmwc ymb ymu ymb wmb ymc cc

ymb ymu ymb ymb ymb ymb ymu ymb ymb ymb cc ymu ymu ymb wmwc wmwc cc cc wmu wmwc wmu wmb wmwc wmbc wmu wmbc mu mwc wmwc wmb

ymb ymu ymb ymb ymb mb ymb ymb ymb ymu ymb ymb ymu ymb wmb mu wmb wmu wmb cc ymu cc wmwc ymb wmwc rb ymb ymc ymc

ymb ymb ymb ymu zmc ymu ymb ymu ymb ymu ymu ymu ymu ymu ymb cc cc mb wmu ymu lmwc wmwc ymb cc wmw wmu wmwc wmwc

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ymb cc ymb ymu ymb ymb ymu ymb ymu ymu ymb ymu ymb ymc ymu mwc mu wmwc wmbc ymu wmwc wmu ymbc ymb ymb ymu ymc lmwc

ymb ma ymb zmu ymb ymb ymb ymb ymu ymu ymb ymu ymb mu mwc mw lmwc lmu mwc mu ymb wmu wmu wmwc ymb cc mbc lmu cc

ymb ymb ymb ymb ymu ymb ymb ymu ymb ymb ymb ymu ymb lmu lmb omc omu ymbc cc lmbc mwc wmwc wmbc ms ms ms wmwc cc wmbc

ymb ymb ymb ymu ymb ymb ymb ymb ymu cc ymb mb ymb ymu wmwc mu wmu wmwc cc wmwc wmb wmwc mwc mu wmu cc wmwc cc cc mbc

cc ymb ymb ymb ymb ymb ymb ymb ymb ymu ymu ymb mb ymu wmu wmu ymu wmu wmu mbc wmu cc lmwc wmwc ymb cc wmwc rb ymu mwc

ymb ymb ymb ymb ymb ymb ymb ymb ymb ymb ymb ymu ymu mb cc wmb cc cc wmbc wmwc zmu mbc wmwc wmu lmwc ymu wmb wmwc lmwc wmwc

ymb ymb ymb ymb ymb ymb ymb ymu ymu ymb ymb ymb ymb ymb wmwc mwc ymu ymu wmwc wmwc zmc cc ymb ymb rb wmwc ymb mu wmwc

ymb ymu ymu ymu ymb ymu ymu ymb ymb ymu ymb ymb ymb cc zmbc wmbc ymb ymb ymb ymb wmwc ymb ymb ymc wmu omc wmbc ymc wmwc

7-BORE NESTBLOCKS 8-BORE NESTBLOCKS(4.8 MM BOREWIDTH) (3.2 MM BOREWIDTH)

#9

The 15 colour banded nests hatched to S. canadensis. 6 of 7 male-female orderings

were colour different. (gens 2004 & 2005).earliest latest

1 F M M M M M M

2 F F F F M

3 F ---- F M M ---- M M

4 F F F ---- M M M

5 F F M F F M M

6 ---- F F F M M M M M

7 F F F F ---- M

8 ---- F F M

zzzz

9 F ---- M F F ---- M

10 M F F M F M M

11 F F F ---- ---- F M ----

12 F F F F F M

13 F M F M

14 M M F F

15 F F M F M

Nests 1-8 generation 2005, 9-15 generation 2006

STATISTICAL ASSOCIATION

Sex orderings

MF FM

Colour same 1 14

pairs different 6 1

13 nests.

Fisher's exact p = 0.001.

SIMPLE MODEL, DIPLOID FEMALE, HAPLOID MALE.

LATER NEST F F F M M M

EARLIER NEST

F F F F F F F F F M F F M M

F M F M F F F M F M F M M M

M M M M F F M M F M M M M M

CLASSIC MODEL

DIPLOID FEMALES & HAPLOID MALES

LATER NEST F F F F F F M M

EARLIER NEST

F F F F F F F F F F F F F F F F F F M M

F F M M F F MMF F F F F F MMF F M M

M M M M M M MMF F F F M M MMF F M M

F mM M F mMMF F F F F mMMF F M M

m F m F m Fm F F F F F m Fm F F F M M m

MODERN ADDITION

F & M FEMALES, HAPLOID & DIPLOiD MALES F, M & m

M M M M F m F M m F m F

F F F F M M M M F F F F Fm F M F F F Fm Fm F

F F M M M M M M F F MMFm F M F F M Mm Fm F

M M M M M M M M M M MMFm F M M M M Mm Fm F

F mM M M M M M F mMMFm F M F mM Mm Fm F

mFm F M M M M m Fm F Fm F M m Fm Fm Fm F