Which taxonomic group is described as large and having shiny blue scales?

• A. Toxorhynchitinae
• B. Aedes vexans
• C. Culiseta melanura
• D. Psorophora ciliata

Answer: (A)

The distinct look described—large size with a shiny metallic blue sheen on the scales—points to the subfamily Toxorhynchitinae. Members of this group, including the giant mosquitoes in the genus Toxorhynchites, are notably larger than most other mosquitoes and have bold, metallic blue scales that give them a striking appearance. The other options do not share this combination of large size and metallic blue scaling: Aedes vexans is a medium-sized mosquito with more muted coloration and banded legs, Culiseta melanura is generally dark with pale leg markings, and Psorophora ciliata is large but not characterized by a shiny blue scale sheen. Hence, the best match is Toxorhynchitinae.