Table 1. Summary of candidate genes from the antennal transcriptome of Dendroctonus valens.

Candidate genes	# in occurrence
Odor-reception
Odor binding proteins	21
Odorant receptors	22
Ionotropic receptor	3
Ionotropic glutamate receptors	8
Gustatory receptors	4
Sensory neuron membrane proteins	4
Chemsensory proteins	6
Odor/xenobiotic degradation
Cytochrome P450s	49
Glutathione S-transferases	11
Esterases	66
Aldehyde dehydrogenases	14
Epoxide hydrolases	4
Catalases	3
Superoxide dismutase	5
Glutathione peroxidase	3