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HEMIPTERA / HETEROPTERA
(Email Contacts)
More than 18 of 60+ families of Hemiptera
(Heteroptera) have entomophagous species.
The following key is adapted from Brues, Melander & Carpenter (1954) and Schlinger & Doutt (1964) by E. F. Legner:
Keys to
Adults of Important Families of
Entomophagous
Hemiptera
[Please
refer to <Guide> for more illustrations & <Hemiptera> for order details]
HEMIPTERA <General Characteristics> [Latest
Classification]
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1a. Antennae as long or longer
than head, if not then eyes and ocelli absent
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1b. Antennae shorter
than head, usually hidden in cavities beneath the eyes
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2a. Eyes, and often
ocelli, present
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3a. Claws apical, last tarsal
segment with entire tip
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3b. Claws of at least
front tarsi distinctly ante apical, the apex of last tarsal segment more or
less cleft
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4a. Antennae with 4 segments, not counting minute intermediate ring segments or
antenniferous tubercles on the head if present
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5a. Tarsal claws devoid
of basal pads (arolia), if present then meso- and metasternum are composite
or front legs are raptorial
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5b. Tarsal claws
provided with arolia
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6a. Meso- and metasternum
composite, formed of more than 1 piece
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6b. Meso- and
metasternum simple, formed of a single piece
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8a. Pronotum simple,
often large and broad, or long and narrow; head not constricted at base
behind eyes
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9a. Antennae elbowed,
slender filiform or often thin apically
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14b. Antennae hidden;
front legs raptorial .......... Nerthridae <Habits being sought>
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15a. Front coxae inserted
at or near front margin of prosternum; hind tarsi with distinct
claws........................
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16a. Upper wings with
membrane reticulately veined
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