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Order key (cont.)
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Group 1 - Six legs (Fig. 1), 2 to 3 prominent caudal filaments (Fig 2) or end of abdomen having several sharp points (Fig. 3), usually with wing pads (Fig. 4) (Includes Orders Ephemeroptera, Plecoptera, and Odonata)
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Group 2 - Six legs (Fig. 5-7), no wing pads (Fig 5), (Includes Orders Trichoptera, Lepidoptera, Megaloptera, Neuroptera, and larval Coleoptera)
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Order Hemiptera - Six legs (Fig 8), beaklike mouthparts for piercing sucking (Fig. 9).
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Order Collembola - Six legs, small in size, abdomen with six or fewer segments (Fig. 10).
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Order Diptera - No true legs present on thorax (Fig. 11) - may have fleshy protuberances on thorax but they are not jointed (Fig. 12 & 13).
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