
<p>1. PaDIL Species Factsheet Scientific Name: </p><p>Cathartus quadricollis (Guérin-Méneville, 1844) (Coleoptera: Silvanidae: Silvaninae: Silvanini) </p><p>Common Name </p><p>Square-necked grain beetle </p><p>Live link: <a href="/goto?url=http://www.padil.gov.au/pests-and-diseases/Pest/Main/142142" target="_blank">http://www.padil.gov.au/pests-and-diseases/Pest/Main/142142 </a></p><p>Image Library </p><p>Australian Biosecurity </p><p>Live link: <a href="/goto?url=http://www.padil.gov.au/pests-and-diseases/" target="_blank">http://www.padil.gov.au/pests-and-diseases/ </a></p><p>Partners for Australian Biosecurity image library </p><p>Department of Agriculture, Water and the Environment <a href="/goto?url=https://www.awe.gov.au/" target="_blank">https://www.awe.gov.au/ </a></p><p>Department of Primary Industries and Regional Development, Western Australia <a href="/goto?url=https://dpird.wa.gov.au/" target="_blank">https://dpird.wa.gov.au/ </a></p><p>Plant Health Australia <a href="/goto?url=https://www.planthealthaustralia.com.au/" target="_blank">https://www.planthealthaustralia.com.au/ </a></p><p>Museums Victoria <a href="/goto?url=https://museumsvictoria.com.au/" target="_blank">https://museumsvictoria.com.au/ </a></p><p>2. Species Information </p><p>2.1. Details </p><p><strong>Specimen Contact: </strong>Museum Victoria - [email protected] <strong>Author: </strong>McCaffrey, Sarah <strong>Citation: </strong>McCaffrey, Sarah (2011) Square-necked grain beetle(Cathartus quadricollis)Updated on 12/15/2011 <a href="/goto?url=http://www.padil.gov.au" target="_blank">Available online: PaDIL - http://www.padil.gov.au </a><strong>Image Use: </strong>Free for use under the Creative Commons Attribution-NonCommercial 4.0 International (CC BY- NC 4.0) </p><p>2.2. URL </p><p>Live link: <a href="/goto?url=http://www.padil.gov.au/pests-and-diseases/Pest/Main/142142" target="_blank">http://www.padil.gov.au/pests-and-diseases/Pest/Main/142142 </a></p><p>2.3. Facets </p><p><strong>Commodity Overview: </strong>Field Crops and Pastures <strong>Commodity Type: </strong>Grains, Stored Products <strong>Distribution: </strong>Central and South America, USA and Canada <strong>Group: </strong>Beetles <strong>Status: </strong>Exotic Regulated Pest - absent from Australia </p><p>2.4. Other Names </p><p>Cathartus annectens Sharp Cathartus cassiae Reiche, 1854 Silvanus gemellatus Jaquelin du Val, 1857 Silvanus quadricollis Guérin-Méneville </p><p>2.5. Diagnostic Notes </p><p>Square-necked grain beetle, _Cathartus quadricollis_ is considered a secondary pest when coexisting with primary pests such as _Sitophilus oryzae_, _Callosobruchus maculatus_, _Rhyzopertha dominica_ and _Sitotroga cerealella_. However, its importance as a pest was recognized when its infestation was second to _Prostephanus truncatus_ and outnumbered species like _Sitophilus zeamais_, _Tribolium castaneum_ (Herbst), _Carpophilus dimidiatus_ and _Cryptolestes ferrugineus_ (Stephens). </p><p>In warm temperature and tropical areas, such as the Southern United States, Central and South America, and West Africa, _C. quadricollis_ infests maize in the field and is very common in the tropics as a pest of farmstored maize in subsistence farming. In Brazil, _C. quadricollis_ infestation is also more common in the field. </p><p>_Cathartus quadricollis_ appear to be restricted to southern USA states and much more widely distributed in Mexico. </p><p>Source: See weblinks for African Journal of Food Science. A small active beetle which is attracted to ripening crops, it can continue to multiply in storage especially in damaged grain stored slightly damp. Adults are 2.1-3.5 mm in length, light brown in colour, parallel sided and elongate in shape. Optimum conditions for development are about 27°C and 80% R.H.. In maize, infestation begins in the field and continues to develop in storage. The adult beetles will readily fly and have been collected at heights of 70–170m above ground. </p><p>Source: DAFF Pest Risk Analysis (See weblinks) </p><p>2.6. References </p><p>Anon (1979) Stored Grain Insects. Agriculture Handbook No. 500, USDA, Washington DC : USA, 57pp. Dobie, P., Haines, C.P., Hodges, R.J., Prevett, P.F. (Eds) (1984) Insects and Arachnids of Tropical Stored Products, Their Biology and Identification (A Training Manual). Tropical Development and Research Institute, Berks : United Kingdom, 273 pp. Halstead, D.G.H. (1993) Keys for the identification of beetles associated with stored products II. Laemophloediae, Passandridae and Silvanidae. Journal of Stored Product Research 29: 99- 197. </p><p>2.7. Web Links </p><p><strong>African Journal of Food Science: </strong></p><p><a href="/goto?url=http://www.academicjournals.org/ajfs/PDF/Pdf2009/Nov/Sousa%20et%20al.pdf" target="_blank">http://www.academicjournals.org/ajfs/PDF/Pdf2009/Nov/Sousa%20et%20al.pdf </a><strong>DAFF Pest Risk Analysis: </strong><a href="/goto?url=http://www.daff.gov.au/__data/assets/pdf_file/0015/21921/TWGP_1.pdf" target="_blank">http://www.daff.gov.au/__data/assets/pdf_file/0015/21921/TWGP_1.pdf </a></p><p>3. Diagnostic Images </p><p>Cusco, 1 November 2007, A. Quinones. Host: Achiete. Det: G. Tejada, 2007 <br>Cusco, 1 November 2007, A. Quinones. Host: Achiete. Det: G. Tejada, 2007 <br><strong>Antenna Image: </strong>Sarah McCaffrey Museums <strong>Dorsal Image: </strong>Sarah McCaffrey Museums </p><ul style="display: flex;"><li style="flex:1">Victoria </li><li style="flex:1">Victoria </li></ul><p>Cusco, 1 November 2007, A. Quinones. Host: Achiete. Det: G. Tejada, 2007 <strong>Elytra Image: </strong>Sarah McCaffrey Museums Victoria <br>Cusco, 1 November 2007, A. Quinones. Host: Achiete. Det: G. Tejada, 2007 <strong>Head Front Image: </strong>Sarah McCaffrey Museums Victoria </p><p>Cusco, 1 November 2007, A. Quinones. Host: Achiete. Det: G. Tejada, 2007 <strong>Head Side Image: </strong>Sarah McCaffrey Museums Victoria <br>Cusco, 1 November 2007, A. Quinones. Host: Achiete. Det: G. Tejada, 2007 <strong>Lateral Image: </strong>Sarah McCaffrey Museums Victoria <br>Cusco, 1 November 2007, A. Quinones. Host: Achiete. Det: G. Tejada, 2007 <br>Cusco, 1 November 2007, A. Quinones. Host: Achiete. Det: G. Tejada, 2007 <br><strong>Posterior Image: </strong>Sarah McCaffrey Museums <strong>Pronotum Image: </strong>Sarah McCaffrey </p><ul style="display: flex;"><li style="flex:1">Victoria </li><li style="flex:1">Museums Victoria </li></ul><p>Cusco, 1 November 2007, A. Quinones. Host: Achiete. Det: G. Tejada, 2007 <strong>Thorax Side Image: </strong>Sarah McCaffrey Museums Victoria <br>Cusco, 1 November 2007, A. Quinones. Host: Achiete. Det: G. Tejada, 2007 <strong>Ventral Image: </strong>Sarah McCaffrey Museums Victoria </p><p>Results Generated: </p><p>Friday, October 1, 2021 </p>
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