Bombus bahiensis Júnior &amp; Santos &amp; Silveira 2015, Silveirasp. n.
Creators: name: Júnior, José Eustáquio Santos
name: Santos, Fabrício R.
name: Silveira, Fernando A.
Publisher: name: Zenodo
Year: 2015
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Apidae
Bombus
Bombus bahiensis

description: <b> <i>Bombusbahiensis</i> SantosJúnior &amp; Silveirasp. n.</b> urn:lsid:zoobank.org:act: D4CB4F65-BA90-4E9B-BFCF-F420A9718C25 Fig 1C and 1D <b>Diagnosis.</b> No single morphological character is known to be exclusive of <i>Bombus bahiensis</i> sp. n., which can be distinguished from most other Brazilian bumblebee species, except <i>B</i>. <i>brasiliensis</i>, for the mesosoma dorsally yellow, traversed by a black intertegular band, which extends laterally over the lower half of the mesepisternum (and generally reaching its ventral area), and the predominantly yellow metasoma traversed by a black band in T3; from <i>B</i>. <i>brasiliensis</i> it can be distinguished by the mostly black-haired T1, with yellow and partially-yellow hairs restricted to the mid-apical margin of the tergum. Only two species are potentially sympatric with <i>B</i>. <i>bahiensis</i> sp. n., <i>B</i>. <i>pauloensis</i> (melanic form) and <i>B</i>. <i>brevivillus</i>, which can be readily distinguished from <i>B</i>. <i>bahiensis</i> for their entirely black pilosity. <b>Description (worker holotype).</b> <i>Measurements</i> (mm): approximate body length—16.2; head (length:width)– 4.5: 4.0; labrum (length: width)– 0.4:1.7; malar area (length × width)– 0.9:1.3; clypeocellar distance—1.9; interantennal distance—0.7; antennocular distance—0.6; ocellocular distance—0.6; interocellar distance—0.7; ocellar diameter—0.2; ocelloccipital distance—0.8; scape (length:diameter)– 2.1:0.3; length of F1 and F2–0.5, 0.3; forewing length— 14.3; length of 2 ndand 3 rd submarginal cells (measured on their posterior margins)– 1.7, 1.3. <i>Structure</i>: labrum biconvex; disc of clypeus depressed; malar area slightly shorter than wide; interocellar distance larger than ocellorbital. <i>Body color</i>: black, except reddish-brown on posterior tibia; wings dark brown, with light cupreous hue. <i>Body surface</i>: clypeus coarsely punctate, except on disc, irregularly punctate with shiny interspaces; area between lateral ocelli and eye impunctate, smooth and shiny, except for a micro-punctate region on upper paraocular area, near upper inner-margin of compound eyes, which is narrower than mid-ocellar diameter, generally occupying one third of ocellorbital distance; glabrous area on disc of mesoscutum ill-defined, mostly restricted to region posterior to median mesoscutal line, lightly micro-reticulate but shiny; glabrous shiny area on inner surface of hind femur relatively narrow (less than half the width of the surface) occupying the apical three-fourths of the femoral length. <i>Pubescence</i>: on head, black bristles intermixed with greyish plumose hairs, most abundant between antennal sockets; on mesosoma, long, fine hairs with long branches, light yellow, except for black intertegular band; on inner surface of hind tibia, fine, spatulate, the flat apical portion triangular, restricted to the very tip of each seta; on T1- T5 long and fine, with long branches, on T3 light yellow, on other terga, black; on T6 black and short; on sterna and legs, black and short. <i>Variation</i>: the integument varies from black to reddish brown, especially on legs and metasoma; black hairs with light-yellow tips may occur on T1. <b>Queen.</b> Similar to worker, except for the vertex much elevated above level of ocelli, as normally occurs in <i>Bombus</i> queens. <b>Male.</b> Unknown. <b>Holotype.</b> “ Ilhéus BA; Brasil 18/11/2009; A. Nemésio ”, “ Euglossina da Hiléia Baiana, Campus UESC; 16724–47065 ”, “ <i>Bombusbahiensis</i>; SantosJúnior &amp; Silveira, sp. n.; HOLOTYPUS ”. Collected in flight. Deposited at UFMG (accession number 16724–47065). The holotype lacks the right hind-leg, removed for DNA extraction. <b>Paratypes.</b> “ Euglossina da Hiléia Baiana, Campus UESC; 18339–52893 ”, “ Ilhéus BA; Brasil 20/02/2010; A. Nemésio ”, “ <i>Bombusbahiensis</i>; SantosJúnior &amp; Silveirasp. n.; PARATYPUS ”; “ Euglossina da Hiléia Baiana, Campus UESC; 18339–52894 ”, “ Ilhéus BA; Brasil 20/02/2010; A. Nemésio ”, “ <i>Bombus bahiensis</i>; Santos Júnior &amp; Silveira, sp. n.; PARATYPUS ” (both workers, deposited at UFMG). “ Conceição da Barra ES; Brasil 31/01/1969; C. Elias &amp; T. Elias ”, “ <i>Bombus bahiensis</i>; Santos Júnior &amp; Silveira, sp. n.; PARATYPUS ” (two workers, deposited at DZU- P). “ Ilhéus BA; Brasil 2003; M. A. Costa ”, “ <i>Bombus bahiensis;</i> Santos Júnior &amp; Silveira, sp. n.; PARATYPUS ” (queen, deposited at DZUP). <b>Etymology.</b> The name <i>bahiensis</i> refers both to the Brazilian state of Bahia, where the holotype and some of the paratypes were collected, and to its habitat, the Bahia Forest (see explanation below, under “distribution”). <b>Distribution.</b> The species seems to be restricted to the so-called Bahia Forest, which is the especially luxuriant Atlantic Forest formation that covers southern Bahia and northern Espírito Santo states, in Brazil (Fig 3).
description: Published as part of <i>Júnior, José Eustáquio Santos, Santos, Fabrício R. &amp; Silveira, Fernando A., 2015, Hitting an Unintended Target: Phylogeography of Bombus brasiliensis Lepeletier, 1836 and the First New Brazilian Bumblebee Species in a Century (Hymenoptera: Apidae), pp. 1-21 in PLoS ONE 10 (5)</i> on pages 12-13, DOI: DOI:10.1371/journal.pone.0125847, http://zenodo.org/record/3564713