 It is known from a lowland rainforest area in north-eastern Costa Rica

The length of the forewings is 2.3–2.5 mm.Adults have been recorded from January to May.The species name is derived from the Latin "tenuis" (meaning thin, slender) and "furcatus" (meaning forked) in reference to the diagnostic attenuated, furcate structure of the caudal lobe of the male gnathos.