Nemognatha chrysomeloides is a species of oil beetle (Meloidae) endemic to Central and South America.
Ecology Nemognatha chrysomeloides is a parasite of Melitoma marginella and M. segmentaria from Mexico to Argentina. Both N. chrysomeloides and Melitoma are restricted to the same host plant – Ipomoea – and so the rate of parasitism may be comparatively high.
Taxonomy Nemognatha chrysomeloides was first described by Carl Linnaeus in his 1763 work , under the name Meloe chrysomeloides. It is a very variable species, and as such, many synonyms have since been published: Cantharis chrysomeloides (Linnaeus, 1763): Thunberg, 1784 Lytta chrysomeloides (Linnaeus, 1763): Schoenherr, 1817 Nemognathus coeruleipennis Perty, 1830 Nemognatha versicolor Chevrolat, 1834 Nemognatha abdominalis Lucas in Laporte de Castelnau, 1859 Nemognatha bicolor Lucas in Laporte de Castelnau, 1859 (non LeConte, 1853; nec Walker, 1866) Nematognatha lucasi Gemminger, 1870 Nemognatha atra Beauregard, 1890 (non Zonitis atrum Schwartz, 1808; nec Gnathium atrum Dugès, 1889) Nemognatha coeruleipennis var. fulviventris Beauregard, 1890 Nemognatha pallidicollis Beauregard, 1890 Nemognatha violacea Beauregard, 1890 Nemognatha beauregardi Pic, 1910 (replacement name for N. atra Beauregard, 1890) Zonitis chrysomeloides (Linnaeus, 1763): Denier, 1935 Zonitis beauregardi (Pic, 1910): Blackwelder, 1945 Nemognatha chrysomeloides ab. markli Kaszab, 1963
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