Difference between revisions of "Pachybrachis luridus"
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Latest revision as of 14:39, 19 September 2013
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Ordo: Coleoptera
Familia: Chrysomelidae
Genus: Pachybrachis
Name
Pachybrachis luridus (Fabricius, 1798) – Wikispecies link – Pensoft Profile
- Cryptocephalus luridus Fabricius, 1798: 109.
- Cryptocephalus femoratus Say, 1824: 439.
- Cryptocephalus aesculi F. E. Melsheimer, 1847: 171.
- Pachybrachys moerens Stål, 1857: 63.
- Pachybrachys luridus var. Pachybrachis nigrinus Blatchley, 1910: 1130.
- Pachybrachys luridus var. Pachybrachis festivus Fall, 1915: 470.
Recognition
Body dull black, densely, coarsely punctured; pronotum black with anterior median line and sides red or reddish yellow, varying to almost entirely red; elytra mottled with yellow, especially toward sides, varying to entirely yellow to entirely black (Habitus 7); front claws of male much enlarged (as in Figure 4a); male size medium: length 2.65 ± 0.23 mm, width 1.45 ± 0.12 mm.
Distribution
Occuring in the eastern half of the United States (Riley et al. 2003[1]) to the Rocky Mountains, but in Canada restricted to the Carolinian Life Zone of southern Ontario (Map 7).
Material examined
ONTARIO: Essex Co., Ojibway, 9.VI.1943, S. D. Hicks [1♀, CNC]; Lambton Co., Grand Bend, 20.VII.1930, G. E. Shewell [1♀, CNC]; Simcoe Co., 19.VI.1939, G. S. Walley [1♀, CNC]; Toronto Co., Toronto, 26.VI.1896, C. T. Hills [2♂ 2♀, LEM]; same data, except 15–30.VI.1927, L. J. Milne [1♀, UNHC]; same data, except F. Knab [29♂ 20♀, USNM]; Toronto, High Park, 4.VI.1897 [3♂ 2♀, ROM]; Unknown Co., Black Creek, 14.VI.1897 [1♀, ROM]; Springfield [2♀, ROM]; Can., G. M. Greene [1♂, USNM].
Host plants
No plant association records were available from Canadian specimens. In the United States, the false indigos (Baptisia leucantha T. & G., Baptisia tinctoria (L.) R. Br.) (Fabaceae) were the associations most often cited by authors (Frost 1945[2], details in Clark et al. 2004[3]). However, these plants are not present in Québec (Marie-Victorin 1995[4]), and extremely rare in southern Ontario (Scoggan 1978[5]). Barney et al. (2011)[6] stated that recently collected specimens in Kentucky were probably from oak (Quercus spp., Fagaceae).
Comments
Fall (1915)[7] observed specimens from Ontario: Toronto (Wickham). However, no specimens of Pachybrachis luridus have been collected from the province in the last 68 years, and one of its potential hosts (Baptisia spp.) were always extremely rare in southern Ontario (Scoggan 1978[5]). Consequently, Pachybrachis luridus is likely extirpated from the eastern Canadian fauna.
Taxon Treatment
- Barney, R; LeSage, L; Savard, K; 2013: Pachybrachis (Coleoptera, Chrysomelidae, Cryptocephalinae) of Eastern Canada ZooKeys, 332: 95-175. doi
Other References
- ↑ Riley E, Clark S, Seeno T (2003) Catalog of the leaf beetles of America north of Mexico (Coleoptera: Megalopodidae, Orsodacnidae and Chrysomelidae, excluding Bruchinae). Coleopterists Society, Special Publication no. 1, 290 pp.
- ↑ Frost S (1945) Insects feeding or breeding on indigo, Baptisia. Journal of the New York Entomological Society 53(3): 219-225.
- ↑ Clark S, LeDoux D, Seeno T, Riley E, Gilbert A, Sullivan J (2004) Host plants of leaf beetle species occurring in the United States and Canada. The Coleopterists Society, Special Publication No. 2, 476 pp.
- ↑ Marie-Victorin [ (1995) Flore laurentienne, troisième édition mise à jour et annotée par L. Brouillet, I. Goulet. Les Presses de l’Université de Montréal, Montréal, 1083 pp.
- ↑ 5.0 5.1 Scoggan H (1978) The flora of Canada: part 3. Dicotyledoneae (Sauraceae to Violaceae). National Museum of Natural Sciences, National Museum of Canada, Ottawa, 547–1115.
- ↑ Barney R, Hall S (2011) New host plant records for selected Cryptocephaline leaf beetles (Coleoptera: Chrysomelidae) in Kentucky. The Coleopterists Bulletin 65(1): 15-19. doi: 10.1649/0010-065X-65.1.15
- ↑ Fall H (1915) A revision of the North American species of Pachybrachys. Transactions of the American Entomological Society 41: 291-486.
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