What is the genus abbreviation for Coquillettidia?

The genus abbreviation for Coquillettidia is CQ. This abbreviation follows a standard convention where the first letters of the genus name are used to create a shorthand for quicker reference within scientific literature and documentation.

In this instance, "Coquillettidia" begins with the letter 'C,' and the following significant letter in the name is 'Q.' This results in the abbreviation 'CQ.' Such conventions are important for efficient communication among researchers and practitioners in entomology, particularly when dealing with numerous genera and species.

The other options provided do not align with the correct genus abbreviation for Coquillettidia. Options like CD, CT, and CI do not capture the essential letters from the genus name, making them unsuitable for this particular context.