Microfilariaemia presenting with subcutaneous nodule is rare. We report a case of a 22-year-
old female patient who presented with a subcutaneous nodule on right forearm. Fine-needle
aspiration cytology from the nodule showed many sheathed motile microfilaria on wet mount
preparation during day time. Wuchereria loa loa is known to be associated with soft tissue
swellings as reported earlier. Nocturnal motility and cytomorphological features differentiate
Wuchereria bancrofti from Wuchereria loa loa.