Lexical reduplication often occurs in Malay-Indonesian in the names of small animals. Regular sound correspondence should retain intervocalic PAN *w as w; indeed, the form lawa-lawa occurs, but is rarely used. The changes *w > b, as well as *q > zero, point to Madurese as a possible source. But modern Madurese has partial reduplication; moreover, Malay-Indonesian rarely borrowed from Madurese. Note that the Malay form expectedly reflects PAN *q as h.
