Aspideurus

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Aspideurus Signoret, 1880

Photo © Emma Betts, Australian Museum

Type species:

Aspideurus quadrimaculatus Signoret, 1880 by subsequent designation.

Number of Australian species:

Two.

Extralimital Distribution:

Australian Region - Indonesia (Sulawesi), Papua New Guinea; Oriental Region - Indonesia (Java, Sumatra).

Australian Distribution:

Subtropical and tropical regions; New South Wales and Queensland.

Biology:

Unknown.

Host(s):

Aspideurus flavescens associated with Buckinghamia sp. [PROTEACEAE], Gossypium sp. [MALVACEAE].

Diagnosis:

Colour

Dorsally pale to medium brown with darker punctations and yellowish or orange patches on the pronotum and scutellum. Ventrally pale to medium brown with some darker punctations and patches towards the lateral edges. Legs and antennae yellowish, all segments concolourous.

Texture

Densely and uniformly punctate.

Vestiture

Glabrous.

Structure

Body - Elongate, parallel-sided to slightly ovoid. Length 3.5 mm - 7.0 mm; width 3.0 mm - 5.8 mm.

Head - Subhemispherical, strongly 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 the eyes, inserted into head below mid-height but above ventral margin of eyes; bucculae elongate (posteriorly beyond antennifers); vertex cross-sectional shape very slightly convex; labium reaching between middle and hind coxae, first labial segment longer than bucculae; eyes not stylate, directed laterally.

Pronotum - Calli present and well developed; pronotal collar present; anterior lobe surface flat; humeral angles subangulate; lateral margins carinate; anterolateral margins simple and convex; posterolateral margins straight; posterior margin straight.

Scutellum - U-shaped and enlarged but does not reach posterior abdomen, apex broadly rounded; lateral calli present; medial callus absent.

Thoracic sterna - Prosternum flat; mesosternum with low raised keel; metasternum flat.

External efferent system - Evaporative scent gland covering most of the metepisternum; peritreme elongate, apically pointed.

Hemelytra - Macropterous, as long or longer than abdomen; membrane veins linear (parallel).

Legs - Fore tibia sulcate.

Abdomen - Connexiva visible dorsally; laterotergites armed with small spines.