Psyche: A Journal of Entomology

Research Article

Intraspecific and Intracolonial Variation in the Profile of Venom Alkaloids and Cuticular Hydrocarbons of the Fire Ant Solenopsis saevissima Smith (Hymenoptera: Formicidae)

Table 2

Cuticular hydrocarbons from hexane extracts of fire ants Solenopsis saevissima obtained from different regions of Brazil.
CompoundsShort nameDiagnostic ions, RT (min)RI (calc.)RI (lit.)
docosaneC22310 (M+), 113, 99, 85, 71, 5720.4322002200
tricosaneC23324 (M+), 113, 99, 85, 71, 5721.1423002300
11-Methyl-tricosane11-Me-C23338 (M+), 323, 196, 168, 14021.4023362336
3-Methyl-tricosane3-Me-C23338 (M+), 323, 309, 28121.6523722375
tetracosaneC24338 (M+), 113, 99, 85, 71, 5721.8424002400
12-Methyl-tetracosane + 11-methyl-tetracosane12-Me-C24 + 11-Me-C24352 (M+), 337, 323, 210, 196, 182, 16822.1424342435
12-Pentacosene12-C25:1350 (M+), 111, 97, 83, 69, 5522.342477—
10-Pentacosene10-C25:1350 (M+), 111, 97, 83, 69, 5522.362483—
PentacosaneC25352 (M+), 113, 99, 85, 71, 5722.4925002500
11-Methyl-pentacosane11-Me-C25366 (M+), 351, 224, 196, 16822.7025322534
3-Methyl-pentacosane3-Me-C25366 (M+), 351, 337, 30922.9525702574
HexacosaneC26366 (M+), 113, 99, 85, 71, 5723.1526002600
13-Methyl-hexacosane13-Me-C26365 (M+), 351, 210, 196, 182, 16823.3426302633
12-Heptacosene12-C27:1378 (M+), 111, 97, 83, 69, 5523.642670—
13-Heptacosene13-C27:1c378 (M+), 111, 97, 83, 69, 5523.672671—
HeptacosaneC27380 (M+), 113, 99, 85, 71, 5723.8027002700
13-Methyl-heptacosane13-Me-C27394 (M+), 379, 224, 196, 16824.0827362733
n-OctacosaneC28:1392 (M+), 111, 97, 83, 69, 5524.182747—
13,15-Dimethyl-heptacosane13,15-DiMe-C27408 (M+), 239, 19724.2527562756
3-Methyl-heptacosane3-Me-C27394 (M+), 379, 365, 33724.3827722774
OctacosaneC28394 (M+), 295, 267, 239, 196, 16824.6028002800
3,7,11-Trimethyl-heptacosane3,7,11-TriMe-C27422 (M+), 393, 323, 253, 197, 12724.8228302833
tridecaneC30422 (M+), 113, 99, 85, 71, 5726.0130003000
Notes: Compounds identified by comparison with mass spectra from [12]/[24, 25]. RT: retention times; RI (calc.): calculated retention indexes (based on Van den Dool and e Kratz, 1963 [21]); RI (lit.): retention indexes as recorded in [26–28]. For further information on the collection sites, refer to narrative.