Non-nucleated cell-like population with RNA
Maybe you are seeing extracellular vesicles1?

At least might be worth checking out since extracellular vesicles containing RNA have been reported within the hemolymph of mosquitos2.

References:
1: Van der Pol, E., Böing, A. N., Harrison, P., Sturk, A., &amp; Nieuwland, R. (2012). Classification, functions, and clinical relevance of extracellular vesicles. Pharmacological reviews, 64(3), 676-705.
2: Severo, M. S., Landry, J. J., Lindquist, R. L., Goosmann, C., Brinkmann, V., Collier, P., ... &amp; Levashina, E. A. (2018). Unbiased classification of mosquito blood cells by single-cell genomics and high-content imaging. Proceedings of the National Academy of Sciences, 115(32), E7568-E7577.