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Psyche 
[Vol. 93 
Fig. 4: Forewings of Epimyrma SS- Left: Variation of wing venation of E. 
ravouxi from 3 populations; reduction of the subrectangular discoidal cell, a: Corsica, 
b: Swiss Valley, c: Taubertal, Bavaria. Right: Variation of wing venation within 
one E. Araussez-population (no. 1, Calpe, Spain). d,e,f: Reduction of the sub- 
triangular discoidal cell. 
2n = 20. 9 cells of 2 additional, apparently $, prepupae contained 20 
chromosomes, 2 others had 17 and 15, respectively. Chromosome 
numbers of less than the haploid (n = 10) or diploid (2n = 20) 
number are probably due to loss of chromosomes during prepara- 
tion. Single diploid cells in haploid $ $ were occasionally found in 
other species, too (e.g. Hauschteck 1962, 1965). 
In 2 E. vandeli $ pupae from a colony from the type locality (pop. 
5a), 26 and 15 cells, respectively, were checked. They all had 10 
chromosomes each. 
The karyotypes of E. kraussei and E. vandeli with n = 10 chromo- 
somes are apparently identical. They consist of 6 small to medium- 
sized metacentrics, 3 medium-sized submetacentrics and 1 large 
subtelocentric. E.k. and E.v. share this karotype with all the species 
of this genus so far studied [E. bernardi Espadaler 1982, E. Corsica 
(Emery 1895), E. ravouxi (Andre 1896) and E. stumperi (Kutter 
