Chlerogas Vachal 1904
Creators: name: Engel, Michael
Publisher: name: Zenodo
Year: 2010
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Halictidae
Chlerogas

description: Key to species of <i>Chlerogas</i> The key presented here is corrected and updated from that provided by Engel and Gonzalez (2009). 1. Antenna with 10 flagellar articles; medioapical margin of metasomal tergum V entire (males)......................................................................................... <b>2</b> – Antenna with nine flagellar articles; medioapical margin of metasomal tergum V with slit (females)......................................................................... <b>11</b> 2(1). Metasomal terga metallic green to blue; legs dark brown to black............... <b>3</b> – Metasomal terga and legs largely amber to brown or black, not metallic..... <b>4</b> 3(2). Integument between punctures ventrally on mesepisternum polished smooth or very faintly imbricate and shining; basal area of propodeum with weak striae in basal quarter to third (Peru)........................... <b> <i>C</i>. <i>chlerogas</i> (Vachal)</b> – Integument between punctures ventrally on mesepisternum strongly imbricate and weakly shining; basal area of propodeum with distinct and complete striae (Colombia, Ecuador).............................. <b> <i>C</i>. <i>cyaneus</i> Brooks &amp; Engel</b> 4(2). Head and mesosoma not metallic, brown to black; leg coloration variable.... <b>5</b> – Head and mesosoma metallic green to blue, sometimes coloration is rather subdued on mesosoma and face (<i>i.e</i>., <i>C</i>. <i>tatamaensis</i>); legs largely amber, nev- er entirely dark brown to black................................................................... <b>7</b> 5(4). Legs largely amber; apex of clypeus with transverse amber marking............ <b>6</b> – Legs dark brown to black, without amber podites or markings; apex of clypeus with narrow brown or amber (Bolivia)............... <b> <i>C</i>. <i>aterrimus</i> sp. n.</b> 6(5). Metasomal sterna I–III brown (Peru)................. <b> <i>C</i>. <i>hirsutipennis</i> Cockerell</b> – Metasomal sterna I–III amber (Ecuador).................. <b> <i>C</i>. <i>cooperi</i> Engel et al.</b> 7(4). Metasomal terga I and II amber with transverse dark brown bands............ <b>8</b> – Metasomal terga I and II entirely amber (Colombia).................................................................................................... <b> <i>C</i>. <i>colombiensis</i> Brooks &amp; Engel</b> 8(7). Antennal scape dark brown to black........................................................... <b>9</b> – Antennal scape entirely amber (Venezuela)............ <b> <i>C</i>. <i>tiara</i> Brooks &amp; Engel</b> 9(8). Apical margin of metasomal sternum V deeply concave........................... <b>10</b> – Apical margin of metasomal sternum V entire (Venezuela)............................................................................................. <b> <i>C</i>. <i>araguaensis</i> Brooks &amp; Engel</b> 10(9). Integument around median line of mesoscutum with well defined, small punctures separated by 0.5–1.75 times puncture width and imbricate; metallic green of head and mesosoma brilliant and shining (Venezuela)......................................................................................... <b> <i>C</i>. <i>townesi</i> Brooks &amp; Engel</b> – Integument around median line of mesoscutum granulose and imbricate, with shallow, ill-defined largely contiguous punctures; metallic green of head and mesosoma dark and subdued, particularly on mesosoma where it appears largely as highlights dorsally or as dark metallic green on pleura and propodeum (Colombia).................................. <b> <i>C</i>. <i>tatamaensis</i> Engel &amp; Gonzalez</b> 11(1). Metasomal terga metallic green to blue, or nearly black with scattered metallic highlights; legs dark brown to black, without amber coloration........... 12 – Metasomal terga without metallic coloration, instead amber and/or brown; legs largely amber, although some with extensive brown markings........... <b>15</b> 12(11). Basal area of propodeum with distinct striae, sometimes only basally....... <b>13</b> – Basal area of propodeum granular, without distinct striae......................... <b>14</b> 13(12). Basal area of propodeum with distinct and complete striae; integument between punctures ventrally on mesepisternum strongly imbricate and weakly shining; malar space to compound eye length ratio 0.37 (Colombia, Ecuador).................................................................. <b> <i>C</i>. <i>cyaneus</i> Brooks &amp; Engel</b> – Basal area of propodeum with weak striae in basal quarter to third; integument between punctures ventrally on mesepisternum polished smooth or very faintly imbricate and shining; malar space to compound eye length ratio 0.48 (Peru).................................................................. <b> <i>C</i>. <i>chlerogas</i> (Vachal)</b> 14(12). Head and mesosoma dark metallic blue-green or green with blue and purple highlights; metasoma metallic green with scattered to strong blue to purple highlights (Bolivia)...................................... <b> <i>C</i>. <i>boliviensis</i> Brooks &amp; Engel</b> – Head and mesosoma black to dark brown with faint metallic highlights; metasoma black to dark brown (Bolivia)........................ <b> <i>C</i>. <i>aterrimus</i> sp. n.</b> 15(11). Face brilliant metallic green or brassy green.............................................. <b>16</b> – Face black or dark brown, with green or gold highlights (Ecuador)............................................................................................... <b> <i>C</i>. <i>cooperi</i> Engel et al.</b> 16(15). Mesoscutum with median longitudinal area of dark brown to black, nonmetallic integument, laterally metallic green................................................. <b>17</b> – Mesoscutum entirely metallic green (Colombia)..... <b> <i>C</i>. <i>nephos</i> Brooks &amp; Engel</b> 17(16). Metasomal tergum II almost entirely brown; malar space to compound eye length ratio 0.32 (Venezuela)................................ <b> <i>C</i>. <i>tiara</i> Brooks &amp; Engel</b> – Metasomal tergum II entirely amber, or nearly so; malar space to compound eye length ratio 0.41 (Venezuela)...................... <b> <i>C</i>. <i>townesi</i> Brooks &amp; Engel</b>
description: Published as part of <i>Engel, Michael, 2010, The bee genus Chlerogas in Bolivia (Hymenoptera, Halictidae), pp. 61-70 in ZooKeys 46 (46)</i> on pages 68-69, DOI: 10.3897/zookeys.46.460, http://zenodo.org/record/576665
description: {"references": ["Engel MS, Gonzalez VH (2009) A new species of Chlerogas from the Andes of central Colombia (Hymenoptera: Halictidae). Caldasia 31 (2): 441 - 447."]}