Since your emission file contains the CB05 species XYL which in CB6R3 was split between XYLMN (xylene minus naphtalene) and NAPH (naphtalene), you need to map your XYL emissions to one or both of these CB6R3 model species via the DESID module before you can reference then as part of the sensinput.dat DDM-3D control file.
Specifically, you will need to edit CMAQ_Control_DESID_cb6r5_ae7_aq.nml to provide a rule to map your XYL emissions to the XYLMN and maybe NAPH model species. After doing so, you would then reference XYLNM and NAPH instead of XYL in sensinput.dat.
I cannot provide guidance on what a proper mapping would look like, as this goes back to sector-specific speciation factors that normally would be taken care of during emissions inventory processing through tools like SMOKE.
If you decided that you want to map all of your XYL emissions to XYLMN and none to NAPH, the new rule you would add to CMAQ_Control_DESID_cb6r5_ae7_aq.nml would look like this:
'EVERYWHERE', 'ALL' ,'XYL' ,'XYLMN' ,'GAS' ,1. ,'UNIT','a',
'EVERYWHERE', 'ALL' ,'XYL' ,'NAPH' ,'GAS' ,0. ,'UNIT','a',
If you instead wanted to apply a 90/10 split to your XYL emissions, the new rule you would add to CMAQ_Control_DESID_cb6r5_ae7_aq.nml would look like this:
'EVERYWHERE', 'ALL' ,'XYL' ,'XYLMN' ,'GAS' ,0.9 ,'UNIT','a',
'EVERYWHERE', 'ALL' ,'XYL' ,'NAPH' ,'GAS' ,0.1 ,'UNIT','a',