Tropical parabiotic ants: Highly unusual cuticular substances and low interspecific discrimination

Table 3 Diagnostic ions of the methyl-branched alkenes in the red Ca. rufifemur variety.

substance No.	Substance	diagnostic ions from hydration	diagnostic ions from DMDS derivatization	inferred double bond position
37	25-MeC37-ene	196, 365	243, 271, 355, 383	14, 16 or 21, 23
43	25-MeC38-ene, 26-MeC37-ene, 27-MeC38-ene	182, 196, 210, 364, 379, 393	229, 243, 257, 271, 369, 383, 397, 411	13, 14, 15, 16 or 22, 23, 24, 25
52	27-Methyl-C39-ene	196, 393	243, 271, 383, 411	14, 16 or 23, 25
56	27-Methyl-C40-ene	210, 393	243, 257, 271, 397, 411, 425	14, 15, 16 or 24, 25, 26
61	27-MeC41-ene, 29-MeC41-ene	196, 224, 392, 421	243, 271, 299, 383, 411, 439	14, 16, 18 or 23, 25, 27

*diagnostic ion/molecule with respective double bond position at least twice as abundant as remaining ions/molecules; ** position of double bond was confirmed at the positions 14 and 16 via cleavage after ozonisation

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