Valmiki Ramayana Yuddha Kanda Sarga 41 Shloka 49
Original Shlokaअद्भुतश्चविचित्रश्चतेषामासीत्समागमः ।।6.41.49।। तत्रवानरसैन्यानांशलभानामिवोद्यमः ।
1 source checked for this shloka
तत्र there, शलभानाम् in that place, उद्यमःइव like locusts, तेषाम् they, वानरसैन्यानाम् Vanara army, समागमः gathered, अद्भुतश्च amazing, विचित्रश्च astonishing, आसीत् seemed.
There it seemed as if a flight of locusts had gathered, with monkey army gathered there. It was amazing and astonishing.