Arabic

sumsum- - red ant (BK 1 1138, Lane 1420, LA XII 305)

In Lane and LA also simsimat- and sam(m)āmat-. Cf. Nöldeke 1904 118 (”Das arabische, nicht wirklich belegte und jedenfalls sehr seltene, Wort ist wohl dem Aramäischen entlehnt”).

PS
*šumšum- - ant (SED II No. 205)
Cf. Tgr. šašənte ‘ants’ (WTS 214), probably related with the first m lost and the second one assimilated to n before t (for an alternative interpretation of this form v. *sā/ūs- ‘moth’, SED II No. 198). Cf. Sod. mašo ‘kind of ant’ (EDG 433). Metathesis of a non-reduplicated prototype of the present root?