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Black Fungus Beetle

Scientific Name
Alphitobius laevigatus
Scientific Author
(Fabricius, 1781)
Taxonomy
(Coleoptera: Tenebrionidae: Tenebrioninae: Alphitobiini)
Pest Status
0 Unknown
Status
NZ - Exotic
Reliability
High
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Diagnostic Images

Head Oblique - Adult
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Caption
COL250
Source
Caroline Harding MAF
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Diagnostic Images (6)
Other Images (3)
Diagnostic Notes
Adult

Length 5.0-6.5 mm. Dark brown to piceous, shining. Eyes completely or almost completely divided. Pronotum with sides arcuate, markedly convergent apically, indistinctly so toward base, disc moderately convex, finely punctate medially, coarsely so laterally. Elytra widening to beyond middle, then markedly arcuate to apex, striae not impressed near suture, becoming moderately so laterally, intervals finely punctate on disk, more coarsely so laterally, punctures irregular, intervals quite convex laterally. Abdominal sterna II to VII with 2 setae laterally; last abdominal tergum with seta adjacent to apex or beyond.

Larvae - Family diagnosis

- Excluding Lagriinae and Alleculinae. Usually cylindrical to slightly dorsoventrally flattened; head, all visible tergites or only head, and abdominal apex sometimes heavily sclerotized; sternites sometimes sclerotized. Head with epicranial stem short to long, frontal arms V- or U-shaped, endocarina absent, frontoclypeal suture distinct. Antennae 2 or 3-segmented, segment 3 reduced or rarely absent; sensory appendage usually flat, forming incomplete ring around base of segment 3, rarely longer and conical, or complex. Ocelli usually absent, sometimes 5 on each side. Mandibles with mola usually concave, irregularly tuberculate or coarsely ridged, sometimes finely transversely ridged. Maxillae with mala truncate or rounded, rarely with uncus. Labium with ligula; palpi 2-segmented. Hypopharyngeal sclerome present. Hypostomal rods absent, gula present. Legs sometimes unequal, anterior pair larger than others, coxae contiguous to moderately widely separated; tarsunguli bisetose; sometimes strongly sclerotized apically. Abdomen with tergite 9 simple, rounded or bearing acute median process, paired urogomphi, concave plate, or complex armature; sternite 9 reduced, simple; segment 10 usually ventral, partly or completely concealed, usually with pair of pseudopods, sometimes subterminal. Spiracles annular, with circular or oval peritreme, sometimes lined with small airtubes (annular multiforous).

- Lagriinae. Similar to Tenebrionidae, except: subdepressed or depressed, fusiform or onisciform; antennae pubescent, 2-segmented, segment 2 considerably longer than 1, club shaped, with group of sensilla or small, dome-shaped or sinuous sensillum at apex; hypopharyngeal sclerome present, usually without anterior elongate extension; legs similar in size and chaetotaxy; body sometimes covered with long setae and characteristically hairy.

- Alleculinae. Similar to Tenebrionidae, except: hypopharyngeal sclerome with elongate, anterior extension and sternopleural sutures of abdomen all absent or all present. Other tenebrionid larvae, if possessing elongate extension of hypopharyngeal sclerome, lack sternopleural sutures on abdominal segment 8, whilst they are present on other segments. Abdominal segment 9 approximately parabolic in outline, rarely so in other Tenebrionidae.

References

- Booth, R.G., Cox, M.L. & Madge, R.B. (1990). IIE guides to insects of importance to man. 3. Coleoptera. International Institute of Entomology. University Press, Cambridge, UK, 384 pp.

- Downie, N.M. & Arnett, R.H., Jr. (1996). The beetles of Northeastern North America, Vols. 1 & 2. The Sandhill Crane Press, Gainesville, Florida, 1720 pp.
More Information
Specimen Contact
MAF Plant Health & Environment Laboratory
Author
MAF Plant Health & Environment Laboratory
Created
14/03/2011 02:07 AEST
Last Updated
19/03/2014 01:50 AEST
Citation
MAF Plant Health & Environment Laboratory (2011) Black Fungus Beetle (Alphitobius laevigatus) Updated on 3/19/2014 1:50:09 AM Available online: PaDIL - http://www.padil.gov.au.
Image Use
Free for use under the Creative Commons Attribution 3.0 Australia License

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