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Insect Orders

Ephemeroptera: Mayflies

Odonata: Dragonflies

Hemiptera: True Bugs

Trichoptera: Caddisflies

Lepidoptera: Moths and Butterflies

Coleoptera: Beetles

Diptera: Flies

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Glossay

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Glossary

 

Abdomen: The posterior part of the three main body divisions of an insect.

Anterior: Towards the head.

Beak: The mouthpart of a piercing-sucking insect. (Figure a.)

Cerci: A pair of appendages at the posterior end of the abdomen. (Figure b.)

Coxal Plates: Flattened structures that extend beyond the coxa (first leg segment) of the beetle (Figure c.)

Detritus: Organic material in various stages of decomposition.

Dorsal: Towards the top and back.

Elytra: Thickened fore wings. (Figure d.)

Emergent Vegetation: Vegetation that lives in the water but has parts that grow above the surface of the water.

Epiproct: An appendage above the anus on the dorsal part of the eleventh abdominal segment (that segment is very small) (Figure e.)

Eutrification: The process in which oxygen is removed from the water by the decomposition of large amounts of organic matter.

Filaments: A slender threadlike structure. (Figure f.)

Head: The anterior part of the three main body divisions of an insect.

Hemelytron: The fore wing of Hemiptera. (Figure g.)

Labium: The lower lip of the mouth part structures. (Figures h. and i. showing an example of a dragonfly nymph's labium which can extend outwards.)

Larva: The second stage of development between egg and pupae of insects that undergo complete metamorphosis.

Nymph: The second stage of development between egg and adult of insects that undergo incomplete metamorphosis.

Palpal Lobes: A pair of appendages located at the anterior end of the prementum (lower lip) of Odonata. They are armed with hooks, spines, teeth, and raptorial (grasping) setae. (Figure j.)

Palpi: A pair of appendages that border the proboscis on Culicidae. (Figure k.: the papli on Anopholes sp. are as long as the proboscis)

Paraprocts: A pair of appendages bordering the anus. (Figure l.)

Posterior: Towards the rear.

Prementum: The distal or fore part of the labium. (Figure h.)

Proboscis: Elongated mouthparts.

Prolegs: Fleshy abdominal legs. (Figure m.)

Raptorial: Able to grasp prey.

Submergent Vegetation: Vegetation that grows entirely beneath the surface of the water.

Tarsi: The last section of the leg, divided into several segments. (Figure n.)

Thorax: The middle part of the three main body divisions of an insect.

Tibia: The fourth leg section, between the femur and the tarsi. (figure o.)

Ventral: Towards the belly or underside.

Voracious: Eating with greediness, ravenous

Wing Pads: The undeveloped wings found on a nymph. (Figure p.)

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