Anaxarchus

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Anaxarchus Stål, 1876

Photo © Matthew Bulbert, Australian Museum

Type species:

Anaxarchus pardalinus Stål, 1876 by monotypy.

Number of Australian species:

One.

Extralimital Distribution:

Australian Region - New Caledonia, Papua New Guinea.

Australian Distribution:

Temperate, tropical and subtropical regions; New South Wales, Northern Territory and Queensland.

Biology:

Unknown.

Host(s):

Unknown.

Diagnosis:

Colour

Dorsally and ventrally pale to medium-reddish brown with dark brown to black punctations and patches. Legs pale to medium-reddish brown and concolourous, antennae dark brown to black and concolourous.

Texture

Dorsally, prontoum moderately punctate, scutellum and hemelytra densely punctate. Ventrally moderately and uniformly punctate.

Vestiture

Glabrous.

Structure

Body - Elongate-ovoid, dorsally convex. Length 13.0 mm - 16 mm; width 8.5 mm - 10.5 mm.

Head - Subtriangular, moderately dorsoventrally orientated, shorter than pronotum; jugae equal in length to clypeus, truncate and broad apically, laterally carinate; antennifer processes absent; five antennal segments, first segment shorter than distance between eyes, inserted into head below mid-height but above ventral margin of eyes; bucculae elongate (posteriorly beyond antennifers); vertex flattened; labium reaching between middle and hind coxae, first labial segment equal in length to bucculae; eyes not sylate, directed laterally.

Pronotum - Calli present; anterior lobe surface excavate; humeral angles subangulate; lateral margins carinate; anterolateral margins simple and straight; posterolateral margins sinuate; posterior margin straight.

Scutellum - Triangular, apex narrowly rounded; lateral calli present as raised, polished areas with dark, shallow pits adjacent; medial callus absent.

Thoracic sterna - Prosternum not sulcate; mesosternum with low raised keel; metasternum sulcate.

External efferent system - Evaporative scent gland covering about half metepisternum; peritreme only slightly elongated, apically pointed.

Hemelytra - Macropterous, longer than abdomen; membrane veins linear and subparallel.

Legs - fore tibia sulcate.

Abdomen - Connexiva visible dorsally; laterotergites armed with short, blunt spines.