ABSTRACT
The male of Sphallambyx mexicanum Galileo Martins, 2007 is described for the first time; the geographical distribution of the species is expanded to Guatemala, Costa Rica, and Panama. Sphallambyx chabrillacii (Thomson, 1857) is formally excluded from the fauna of Costa Rica. A key to species of Sphallambyx Fragoso, 1982 is provided.
Subject(s)
Coleoptera , Animals , Costa Rica , Guatemala , Male , PanamaABSTRACT
Santos-Silva et al. (2012) described Thomasella as a new genus of Rhinotragini to include a single species from Panama: Ommata (Eclipta) igniventris Giesbert, 1991. However, Thomasella is a junior homonym of Thomasella Fredericks, 1928 (Brachiopoda). To resolve this homonym, in accordance with the International Code of Zoological Nomenclature, we are proposing Neothomasella as a new replacement name (nomen novum) for Thomasella Santos-Silva et al. (2012). The new name is a compound of the prefix "neo-" (from Greek νεο-, meaning "new") + Thomasella; feminine gender.
Subject(s)
Coleoptera , Animals , PanamaABSTRACT
Currently, Psyrassa Pascoe, 1866 includes 37 species distributed mainly in southern United States to Central America (Monné 2016; Tavakilian and Chevillotte 2016). Only four species occur in northern South America: P. meridionalis Martins, 2005 (Ecuador); P. rufescens Nonfried, 1894 (Brazil); P. testacea Linsley, 1935 (Colombia, Venezuela, French Guiana); and P. subglabra Linsley, 1935 (Ecuador).
Subject(s)
Coleoptera , Animals , Brazil , Central America , Ecuador , French Guiana , North America , United States , VenezuelaABSTRACT
As currently defined, the genus Deltaspis Audinet-Serville, 1834, contains 16 species ranging in distribution from the southwestern United States to eastern Mexico. However, the generic distinction between Deltaspis and its closely allied genera, such as Crossidius LeConte, 1851 and Muscidora Thomson, 1864, is in need of clarification. According to Audinet-Serville, Deltaspis is so named due to its distinctive triangular scutellum (i.e., Δετα, delta, ασπιζ écusson), which is actually a commonly shared character of all these genera. Members of the tribe Trachyderini Dupont (1836), which includes the above genera, also have mandibles with an emarginate-truncate apex with the edge chisel-like or bifid. This modification of mouthpart appears to be for consumption of pollen and/or petals from composite flowers visited by the adult beetles (Krenn et al., 2005; Beierl & Barchet-Beierl, 1999). Other genera from this tribe with this modification of mandibles from North America, and mostly from Mexico, include: Chemsakiella Monné, 2006, Giesbertia Chemsak & Linsley, 1984, Hoegea Bates, 1885, Neocrossidius Chemsak, 1959, Paroxoplus Chemsak, 1959, Plionoma Casey, 1912, Schizax LeConte, 1873, and Tylosis LeConte, 1850. The remainder of Trachyderini genera have unmodified or simple mandibles with apex acute.
Subject(s)
Coleoptera , Animal Distribution , Animals , Mexico , North America , Southwestern United StatesABSTRACT
Elaphidiini Thomson, 1864 is a large tribe of Cerambycidae composed of 92 genera with species distributed from Canada to southern South America. Lingafelter (1998) performed a generic level phylogenetic analysis of the tribe and provided a key to the known genera. According to Lingafelter, Elaphidiini is characterized as follows: mesally-spined antenna (lost in some taxa), narrow metepisternum with a centrally positioned keel, strongly sclerotized below and membranous above; prosternal process between procoxae slightly to strongly expanded at apex (rarely linear and unexpanded); terminal palpomeres much wider at apex than base; and coarsely faceted eyes (with few exceptions).