Animal Parasitology Lab. Biol 4426L

Lab. #13.

Phylum Arthropoda

Order Diptera (Text pages 565-589)

Family Culicidae

Subfamily Culicinae

Aedes egypti – (Text pages 569-573) vector of Denge Fever and Yellow Fever

Slide: male

- Locate the antennae, are they very fluffy looking or not fluffy?

- Locate the mouthparts of this mosquito. Identify the proboscis and maxillary palpus.

- Is the maxillary palpus long or short? Club shaped or pointed?

- What is the color pattern of the last pair of legs?

Slide: female

- Locate the antennae, are they very fluffy looking or not fluffy?

- Locate the mouthparts of this mosquito. Identify the proboscis and maxillary palpus.

- Is the maxillary palpus long or short? Club shaped or pointed?

- What is the color pattern of the last pair of legs?

Culex sp. – (Text page 569) vector for human encephalitis

Slide: adult

- Locate the antennae, are they very fluffy looking or not fluffy?

- Locate the mouthparts of this mosquito. Identify the proboscis and maxillary palpus.

- Is the maxillary palpus long or short? Club shaped or pointed?

- What is the color pattern of the last pair of legs?

Subfamily Anophelinae

Anopheles sp. – (Text pages 573-574) vector of malaria

Slide: male

- Locate the antennae, are they very fluffy looking or not fluffy?

- Locate the mouthparts of this mosquito. Identify the proboscis and maxillary palpus.

- Is the maxillary palpus long or short? Club shaped or pointed?

- What is the color pattern of the last pair of legs?

Slide: female

- Locate the antennae, are they very fluffy looking or not fluffy?

- Locate the mouthparts of this mosquito. Identify the proboscis and maxillary palpus.

- Is the maxillary palpus long or short? Club shaped or pointed?

- What is the color pattern of the last pair of legs?

Mosquito life cycle

- Identify and draw eggs. Larva, pupa. Where do these life cycle stages take place?

- The slide also contains an adult male and adult female mosquito. What genus do you think it is?

Glossina - Tsetse fly - (Text pages 579-580 and Figure 5.4) transmits African sleeping sickness Trypanosoma brucei.

Adults in vial: collected from Tanzania

- Locate the mouthparts of this insect

- Compare the examples to the illustration in your book.

Subphylum Chelicerata

Order Acari (Text pages 603-623)

Dermacentor variabilis - the American dog tick (Text pages 606-607)

Slide: Adult

- Is the anterior portion of the head visible in dorsal view?

- How many legs are present?

- Distinguish this tick with the next kind of tick

- This is the vector of Rocky Mountain Spotted fever and tularemia - common in eastern US. What is the cause of Rocky Mountain Spotted fever?

Argas persicus - a soft tick - (Text pages 611-612)

Slide: Adult

- Is the anterior portion of the head visible in dorsal view?

- How many legs are present?

- Distinguish this tick with the previous tick

- This is called the fowl tick or chicken tick – adults feed at night.

Sarcoptes scabiei - (Text pages 620-621) Itch mite (Demonstration)

Slide: Adult

- Is the anterior portion of the head visible in dorsal view?

- How many legs are present?

- What is the size of thismite in comparison with the two ticks above?

- This parasite causes scabies or sarcoptic mange.

- What is the primary host for this parasite?

- Are humans susceptible to this parasite?