GGC site 3 Kaitlin Killeen

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Arthropod Order: Araneae

Araneae

Morphospecies # 2

Location:

(33°59′03.87″ N, 84°00′20.37″ W)

Date of collection:

January 2016

H’ value for location:

2.272121051

Distinguishing features:

This order is usually noted for having:

  • 4 pairs of legs
  • Most have 4 pairs of eyes as well but some of the species in this order are noted to have less
  • The body parts consist of 2 parts: a cephalothorax and an abdomen
    • A cephalothorax is a term for the body part that is the fusion of the head and the thorax (“cephalo” means head in Greek and “thorax” means chest in Greek)
    • The abdomen is the part of the body that contains most of the internal organs
  • Spinnerets that are located at the end of the abdomen
    • Function of the spinnerets is to spin silk
    • Spinnerets have many purposes, the main use would be for building webs, but other uses would be for immobilizing prey and connecting the spider to its web to ensure that the spider is safe.
  • Fangs
    • Fangs are located at the front of the cephalothorax and are used for defense as well as for capturing prey
  • Sensory palps, also known as pedipalps
    • This part of the Araneae order is located between the fangs and the very first pair of legs
    • The main function of the pedipalps is for sensory purposes like detecting vibrations.

Ecological role

  • The main role of this order is population control of insects
    • Indiscriminate so they do not prey on one single type of insect
      • This means that they are not good for controlling one particular species of insect, but are instead much better at population control as a whole.

Economic/ agriculture/ health

  • For health, some araneae members may not be beneficial towards one’s health due to the fact that some are very venomous.
  • Population control also provides an economic benefit, since some araneae members feed on insects that harm crops.
    • This economic benefit is also an agricultural benefit.

Arthropod Order: Diptera

Diptera

Morphospecies # 2

Location:

(33°59′03.87″ N, 84°00′20.37″ W)

Date of collection:

January 2016

H’ value for location:

2.272121051

Distinguishing features:

  • One pair of wings: membranous
  • Halteres, which are used as stabilizers during flight
    • The halteres are actually reduced hind wings
  • Large compound eyes
    • Compound eyes are excellent at detecting fast movement as well as having a very large viewing angle
  • Thorax that is enlarged in the middle
    • Noted to be very soft and covered in tiny bristles
  • Short antennae
    • Can frilled or bushy
    • Purpose is for feeling (sensing vibrations) and aiding in the sense of smell
  • Mouthparts
    • Usually used for sucking up fluids but some mouthparts can also pierce the skin for feeding (mosquitos)

Ecological role

  • Source of food for other animals
  • Pollinators
  • Decomposers of organic matter

Economic importance

  • Disease transmission
  • Agricultural pests

Arthropod Order: Collembola

Collembola

Morphospecies # 5

Location:

(33°59′03.87″ N, 84°00′20.37″ W)

Date of collection:

January 2016

H’ value for location:

2.272121051

Distinguishing features

  • Six or less abdominal segments
  • 2 main body shapes: cylindrical and long or compact and spherical
  • Simple eyes
  • Hidden mouthparts
  • Genital opening located on fifth segment
  • Antennae
  • Usually 4-6 segments
  • On the underside of the abdomen is a forked tail organ
    • Allows the species to leap into the air
      • The “tail” flexes forward (a lot of tension) and is then released, allowing the species to leap

Ecological role

  • Plant litter decomposition
  • Forming soil microstructure
  • Hosts to parasites

Economic importance

  • Known as pests to agriculture
  • Aid in plant growth at times by distributing fungal spores

Arthropod Order: Hymenoptera

Hymenoptera

Morphospecies # 1

Location:

(33°59′03.87″ N, 84°00′20.37″ W)

Date of collection:

January 2016

H’ value for location:

2.272121051

Description:

  • Third largest order of insects
  • Most have two pairs of membranous wings, with the front wings being larger than the hind wings
  • Two large compound eyes and some also have approximately three simple eyes
  • One pair of antennae
  • Three body segments (head, chest, and abdomen)
  • Six legs
  • Most have a wasp waist, which is a constriction between the abdomen and thorax
  • Have an ovipositor which is used for laying eggs, but some have been modified to be stingers

Ecological role:

  • Some are pests to agriculture but others serve as pest control like parasitic wasps
  • Some act as pollinators (bees)

Economic importance:

  • Control pests that feed on crops
  • Provide honey and beeswax (bees)
  • Few are pests themselves to crops (sawflies)

Arthropod Order: Zoraptera (only 30 discovered species in this order)

Zoraptera

Morphospecies: #1

Location:

(33°59′03.87″ N, 84°00′20.37″ W)

Date of collection:

January 2016

H’ value for location:

2.272121051

Description:

  • One pair of antennae (9 segments)
  • One pair of compound eyes along with one pair of simple eyes
  • Whitish brown or black in color
  • Most do not have wings but some do. The ones that do have 2 pairs of membranous wings with the forewings being longer than the hind wings
  • Soft, small bodies
  • Six legs, 2 segments
  • Abdomen is cylindrical (11 segments)

Ecological role:

  • Environmental engineering (provide homes for other insects)
  • Aid in plant decomposition
  • Nutrient cycling
  • Prey for other insects

Economic Importance:

  • No apparent economic importance due to such a minimal ecological impact


Collector

Kaitlin Killeen

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