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Table 2 Number of Antennal IRs for the Seven Beetles. Major Hycleus-specific expansion of ‘IR41a’ is evident. ‘IR75’ expansion is observed in both the Hycleus genus and bark beetle. * One positively selected orthologue pair was identified in blister beetles

From: Genomic content of chemosensory receptors in two sister blister beetles facilitates characterization of chemosensory evolution

  H. phaleratus H. cichorii T. castaneum [31] D. ponderosae [28] L. decemlineata [31] A. planipennis [28] A. glabripennis [32]
IR25a 1 1 1 1 1 1 1
IR8a 1 1 1 1 1 1 1
IR75 8 13 5 11 6 4 8
IR40a 1 1 1 1 1 1 1
R21a 2 1 1 1 1 1 1
IR68a 1 1 1 1 1 1 1
IR41a* 10 13 3 2 1 1 1
IR76b 1 1 1 1 1 2 1
IR93a 1 1 1 1 1 1 1
IR60a 1 1 1 1 1 1 1
Total 27 34 16 21 15 14 17