Which genus of mosquitoes lays eggs in rafts of 100 or more on standing water surfaces?

The genus of mosquitoes known for laying eggs in rafts of 100 or more on standing water surfaces is Coquillettidia. This characteristic is notable among the species within this genus, as they typically create these large egg masses that float on the water's surface, allowing for efficient breeding.

Understanding the breeding habits of different mosquito genera is essential in pest control and public health, particularly because the breeding sites can significantly impact the population dynamics of mosquitoes known to transmit diseases. Coquillettidia larvae are also unique as they are often associated with aquatic vegetation and have specific ecological preferences, setting them apart from other genera.

In comparison, the other genera mentioned exhibit different reproductive behaviors. For example, Aedes mosquitoes lay their eggs individually or in small clusters, often in environments that may dry up between rains. Anopheles mosquitoes typically lay eggs in a more scattered fashion on the water surface. Culex mosquitoes also display a tendency to lay eggs in rafts, but the size and quantity do not match the larger rafts produced by Coquillettidia. These unique breeding characteristics highlight the importance of understanding various mosquito behaviors in order to implement effective control strategies in public health pest management.