MICHIGAN MOSQUITO CONTROL
CATEGORY 7F CERTIFICATION EXAM
QUESTIONS AND ANSWERS
1. Which mosquito species is primarily known for overwintering as eggs in the soil of
floodplains and is a major nuisance in Michigan after heavy rains?
A. Culex pipiens
B. Aedes vexans
C. Culiseta melanura
D. Anopheles quadrimaculatus
Answer: B
Conceptual Explanation: Aedes vexans is the most common floodwater mosquito in
Michigan, laying eggs in soil that hatch when flooded.
2. In the life cycle of a mosquito, which stages are strictly aquatic?
A. Egg and Larva
B. Larva and Pupa
C. Pupa and Adult
,D. Egg, Larva, and Pupa
Answer: D
Conceptual Explanation: The egg, larva, and pupa stages all require water to develop,
while the adult is the only terrestrial/aerial stage.
3. Which genus of mosquitoes lacks a respiratory siphon in the larval stage and rests parallel
to the water surface?
A. Anopheles
B. Culex
C. Aedes
D. Coquillettidia
Answer: A
Conceptual Explanation: Anopheles larvae breathe through palmate hairs and lie flat
against the surface because they lack a breathing tube or siphon.
4. What is the primary vector for Eastern Equine Encephalitis (EEE) in Michigan, focusing on
the bird-to-bird cycle?
A. Aedes triseriatus
B. Psorophora ciliata
C. Culex restuans
D. Culiseta melanura
, Answer: D
Conceptual Explanation: Culiseta melanura is the primary enzootic vector for EEE,
maintaining the virus in bird populations within hardwood swamps.
5. Under Michigan Regulation 637, what is the minimum information that must be provided
to a customer during a mosquito control application?
A. Risk and benefit information, and the pesticide label
B. The exact time the application was completed
C. The name and address of the applicator
D. The chemical structure of the active ingredient
Answer: A
Conceptual Explanation: Regulation 637 requires specific consumer information,
including risk/benefit data and labels, to be provided to customers.
6. What is the optimum droplet size (Volume Median Diameter) for ULV adulticiding to
ensure droplets remain airborne and hit target mosquitoes?
A. 150 to 200 microns
B. 50 to 100 microns
C. 5 to 20 microns
D. Above 300 microns
Answer: C
CATEGORY 7F CERTIFICATION EXAM
QUESTIONS AND ANSWERS
1. Which mosquito species is primarily known for overwintering as eggs in the soil of
floodplains and is a major nuisance in Michigan after heavy rains?
A. Culex pipiens
B. Aedes vexans
C. Culiseta melanura
D. Anopheles quadrimaculatus
Answer: B
Conceptual Explanation: Aedes vexans is the most common floodwater mosquito in
Michigan, laying eggs in soil that hatch when flooded.
2. In the life cycle of a mosquito, which stages are strictly aquatic?
A. Egg and Larva
B. Larva and Pupa
C. Pupa and Adult
,D. Egg, Larva, and Pupa
Answer: D
Conceptual Explanation: The egg, larva, and pupa stages all require water to develop,
while the adult is the only terrestrial/aerial stage.
3. Which genus of mosquitoes lacks a respiratory siphon in the larval stage and rests parallel
to the water surface?
A. Anopheles
B. Culex
C. Aedes
D. Coquillettidia
Answer: A
Conceptual Explanation: Anopheles larvae breathe through palmate hairs and lie flat
against the surface because they lack a breathing tube or siphon.
4. What is the primary vector for Eastern Equine Encephalitis (EEE) in Michigan, focusing on
the bird-to-bird cycle?
A. Aedes triseriatus
B. Psorophora ciliata
C. Culex restuans
D. Culiseta melanura
, Answer: D
Conceptual Explanation: Culiseta melanura is the primary enzootic vector for EEE,
maintaining the virus in bird populations within hardwood swamps.
5. Under Michigan Regulation 637, what is the minimum information that must be provided
to a customer during a mosquito control application?
A. Risk and benefit information, and the pesticide label
B. The exact time the application was completed
C. The name and address of the applicator
D. The chemical structure of the active ingredient
Answer: A
Conceptual Explanation: Regulation 637 requires specific consumer information,
including risk/benefit data and labels, to be provided to customers.
6. What is the optimum droplet size (Volume Median Diameter) for ULV adulticiding to
ensure droplets remain airborne and hit target mosquitoes?
A. 150 to 200 microns
B. 50 to 100 microns
C. 5 to 20 microns
D. Above 300 microns
Answer: C
