Exam 2--1999 Entomology 105--Insects and People
Entomology 105 Name ___________________
Second Hour Exam
April 2, 1999

1. Name two orders in which carnivory is always present:

2. Provide an example that proves the following statement false: Due to their small size, insect predators are restricted to killing and consuming invertebrate prey.

3. Provide an example of cleptoparasitism:

4. True or false: Parasitoids are frequently encountered in the orders Hymenoptera and Lepidoptera.

5. Name one family of insects that primarily attacks sedentary prey:

6. In what order can polyembryony be found?

7. In terms of efficiency of conversion of ingested food, which kind of meat is more efficient to produce, grasshopper meat or chicken meat?

8. Which of the following statements is true?
a. insects are a good source of vitamins
b. insects provide adequate dietary protein
c. insects are high in salt content
d. all of the above

9. Name the locality where the following edible insects are consumed:
a. tsukudani (ricehoppers)
c. mopane worms
d. gusanos de maguey

10. If you have allergies to dust, why shouldn't you eat insects?

11. Classify the following as either primary or secondary defense:
a. osmeterial eversion
b. thanatosis

12. Early in their lives, the larvae of swallowtail butterflies resemble a bird dropping. Is this color pattern homotypic, cryptic, or aposematic?

13. Provide the name of an insect that defends itself with reactor glands:

14. In what kind of mimicry system is the model toxic and the mimic palatable?
a. Muellerian
b. Beltian
c. Batesian
d. Mendelian

15. What kinds of chemicals do milkweed bugs sequester from their hostplants?
a. formic acid
b. aristolochic acid
c. cardiac glycosides
d. iridoid glycosides

16. What are suture ants?

17. The active component of extracts of Spanishfly is a chemical called
a. cardenolide
b. cantharidin
c. quinone
d. diamphidiatoxin

18. The active component of extracts of Spanishfly acts as a
a. vesicant
b. rubifacient
c. neurotoxin
d. antibiotic

19. What is maggot therapy?

20. True or false: Aquatic insect pheromones are highly volatile.

21. True or false: The gas present in greatest concentration in a physical gill is carbon dioxide.

22. Which of the following relies on a plastron for obtaining oxygen?
a. rat-tailed maggot
b. immature mayfly
c. diving beetle
d. aquatic beetle egg

23. Name two hemimetabolous orders in which all immature stages are aquatic:

24. True or false: Dissolved oxygen under water is present in higher concentrations than atmospheric oxygen above the water surface.

25. What is meant by a "gentleman's hatch"?

26.All of the following flies are based on mayflies; describe the life stage depicted by each type of fly:
a. drake
b. dun
c. humpback
d. spentwing

27. What is the title of the classic flyfishing treatise written by Izaak Walton in 1653?
a. "A Treatyse of Fysshinge with an Angle"
b. "The Compleat Angler"
c. "Flyfishers' Entomology"
d. "A River Runs Through It"

28. Identify the theory or concept each individual conceived or popularized:
a. Charles Darwin
b. Charles Lyell
c. Francis Galton

29. What does "PCR" stand for?

30. Name an insect other than Drosophila melanogaster that can be genetically transformed:

31. A change in a gene, either in DNA sequence or location, is called a
a. genotype
b. phenotype
c. mutation
d. transcription factor

32. Mendel's law of _______ ___________ states that different factors (genes) are inherited independently of each other.

33. Siphonaptera are
a. ectoparasitic as immatures and adults
b. endoparasitic as immatures and freeliving as adults
c. freeliving as immatures and ectoparasitic as adults

34. Provide an example of an insect that is a protelean parasite:

35. Identify two aspects of vertebrate blood that makes it less than ideal as food for insects:

36. True or false: Mycetomes are most often found in species that are parasitic in all life stages.

37. Identify where in the body the following human parasites can be found:
a. Dermatobia hominis
b. Demodex follicularum

38. List two diseases that can be transmitted by a mosquito in central Illinois

39. Which of the following is not known to be used by female mosquitoes to find a blood meal host:
a. visual cues
b. sound cues
c. carbon dioxide in exhaled breath
d. lactic acid in sweat

40. Where would you expect to find Aedes triseriatus?
a. in a salt marsh
b. in a treehole
c. in a fast-flowing stream
d. in a marsh

41. Where might you find a vasodilator?
a. in the gut of a mosquito
b. in the excrement of a mosquito
c. in the saliva of a mosquito
d. in the eggs of a mosquito

42. Aedes albopictus first arrived in the U.S. in 1985;
a. where did it come from?
b. how did it get here?

43. Who headed up the U.S. Army medical team that investigated causes of yellow fever transmission?
a. Carlos Finlay b. William Crawford Gorgas
c. Benjamin Rush
d. Water Reed

44. Which of the following is NOT a distinguishing characteristic of Anopheles mosquitoes?
a. stripes
b. spots
c. very long legs
d. absence of scales on abdomen

45. Plasmodium is a
a. virus
b. protozoan
c. bacterium
d. spirochete

46. Which of the following life stages of Plasmodium can be found in both humans and mosquitoes?
a. ookinete
b. merozoite
c. microgametocyte

47. Correct this sentence: Every year, worldwide, there are approximately 2,000,000 cases of malaria reported.

48. Who first demonstrated that mosquitoes could act as vectors of filarial worms?
a. Patrick Manson
b. Charles Alphonse Laveran
c. Ronald Ross
d. Max Theiler

49. Complicating malaria control is the fact that, at the same time Plasmodium species have developed resistance to ____________, anopheline mosquitoes have developed resistance to ______________.

50. Which of the following is unlikely to harbor fleas?
a. lions
b. coyotes
c. rats
d. elk

51. Provide the common name for the following fleas:
a. Xenopsylla cheopis
b. Pulex irritans
c. Ctenocephalides felis

52. a. What is an inveterate focus?
b. Where is the inveterate focus of bubonic plague?

53. Yersinia pestis is a:
a. virus
b. nematode
c. bacteria
d. protozoan

54. What contribution did Charles Rothschild make to understanding bubonic plague?
a. identified the bacterium that is the causative agent
b. found bacteria in rats and in flea guts
c. described the flea vector of the pathogen
d. demonstrated that flea bites were responsible for disease transmission

55. Which of the following diseases DOES NOT kill its insect host?
a. plague
b. yellow fever
c. typhus

56. Which of the following attributes DOES NOT characterize species in the order Phthiraptera?
a. wingless
b. heavily sclerotized
c. laterally flattened
d. reduced sensory apparatus

57. Typhus is caused by a
a. virus
b. nematode
c. protozoan
d. rickettsia

58. True or false: Head lice have not yet been shown to be resistant to insecticides.

59. List two symptoms of typhus:

60. Name one disease other than typhus that is vectored by lice:

61. True or false: Hemimetabolous and holometabolous insects are equally well represented in the cophrophagous fauna.

62. Among the odor components of dung to which dung-feeding insects orient is the compound
a. bombykol
b. cholesterol
c. tapazole
d. skatole

63. What is meant by "competitive control"?

64. Name two diseases in which house flies may play a role in transmission:

65. Why was the sacred scarab associated with creation and regeneration in ancient Egypt?

66. Correct this sentence: Most of the truly necrophagous insects are species in the orders Coleoptera and Lepidoptera.

67. Provide an example of how DNA analysis can be used in forensic entomology:

68. When was the first account of forensic entomology written?
a. 3rd century BC
b. 13th century
c. 19th century
d. 20th century

69. Which of the following necrophagous insects larviposits?
a. burying beetle
b. flesh fly
c. hide beetle
d. clothes moth

70. Larval dermestids (order _____________) can break down ____________, the principal component of hair and feathers.

71. With what stage of decomposition is each of these insects associated with?
a. blow flies
b. cheese skippers
c. hister beetles
d. tineids and dermestids

72. Why is Piophila casei called a "cheese skipper"?

73. In what centuries did the first, second, and third pandemics of plague occur?