Insects, A Key to Orders

1 Wings absent or if present hidden beneath thick, sometimes hard and shiny, sometimes leathery, front wings, or wing coverings (Be careful here. If there's a crack down the back, probably that's where the front wings or wing coverings meet and there are regular flying wings folded below...)	7
1 Wings clearly visible when the insect is at rest	2
2 Butterflies & moths; mouthparts consisting of coiled tubes for sucking; wings covered with tiny colored scales	LEPIDOPTERA; butterflies & moths
2 Not butterflies & moths; mouthparts not coiled tubes; wings not covered with tiny colored scales	3
3 One pair of wings	DIPTERA; flies
3 Two pairs of wings	4
4 Front wings longer and with considerably larger surface area than hind wings	5
4 Front wings with about the same area as hind wings	6
5 Wasps and bees; tarsi ("feet") 5-jointed, usually thin-waisted	HYMENOPTERA; wasps & bees
5 Not wasp or bees; tarsi 2- or 3-jointed, waist usually thick	HOMOPTERA; cicadas, aphids
6 Antennae short stubs, compound eyes very large, body slender	ODONATA; dragonflies
6 Antennae hairlike, eyes not particularly large,thick-bodied	ISOPTERA; termites
7 Wings entirely absent	8
7 With wings, though they may be hidden beneath a wing covering	12
8 Bodies narrow-waisted, antlike	HYMENOPTERA; wasps & bees
8 Bodies thicker	9
9 Egg-shaped, rear end usually equipped with 2 short tubes (aphids)	HOMOPTERA; cicadas, aphids
9 Bodies more slender shaped, rear end without 2 short tubes (not aphids)	10
10 Most of body whitish, soft-bodied (termites)	ISOPTERA; termites
10 Most of body not whitish, usually hard-bodied	11
11 Antennae with 4 or 5 segments, mouth parts sucking	HEMIPTERA; true bugs
11 Antennae with many segments, mouth parts chewing	ORTHOPTERA; grasshoppers, crickets
12 Rear end (abdomen) with tweezerlike appendages	DERMAPTERA; earwigs
12 Rear end without tweezers-like appendages	13
13 Mouth parts sucking, usually straw-like	14
13 Mouth parts for chewing	15
14 Front wings thick (leathery) and often colored at the base, but clear at the tip; beak rises from head's front or bottom	HEMIPTERA; true bugs
14 Front wings of same texture throughout; beak rises from back part of bottom of head	HOMOPTERA; cicadas, aphids
15 Front wings with obvious veins, when at rest the edges over the back often partly overlapping one another, usually not conspicuously hard	ORTHOPTERA; grasshoppers, crickets
15 Front wings without veins, when at rest the edges over the back meeting one another in a straight line, usually hard like thin plastic	COLEOPTERA; beetles

OK, the test insect is a Hemiptera, a "true bug." It's a Leaf-footed Bug of the family Coreidae, but I'm not sure what its genus and species are.

You might like to look at a key to all the orders at the the UK's "Bug ID" Page. Also Virginia Tech's Identification of Insects and Mites page might help you identify some discoveries.