Whether concupiscence is a specific passion?

Objections

Objection 1 : It would seem that concupiscence is not a specific passion of the concupiscible power. For passions are distinguished by their objects. But the object of the concupiscible power is something delightful to the senses; and this is also the object of concupiscence, as the Philosopher declares (Rhet. i, 11). Therefore concupiscence is not a specific passion of the concupiscible faculty.
Objection 2 : Further, Augustine says (Questions. 83, qu. 33) that "covetousness is the love of transitory things": so that it is not distinct from love. But all specific passions are distinct from one another. Therefore concupiscence is not a specific passion in the concupiscible faculty.
Objection 3 : Further, to each passion of the concupiscible faculty there is a specific contrary passion in that faculty, as stated above (Question [23], Article [4]). But no specific passion of the concupiscible faculty is contrary to concupiscence. For Damascene says (De Fide Orth. ii, 12) that "good when desired gives rise to concupiscence; when present, it gives joy: in like manner, the evil we apprehend makes us fear, the evil that is present makes us sad": from which we gather that as sadness is contrary to joy, so is fear contrary to concupiscence. But fear is not in the concupiscible, but in the irascible part. Therefore concupiscence is not a specific passion of the concupiscible faculty.