Lasioglossum, Curtis, 1833
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publication ID |
https://doi.org/ 10.11646/zootaxa.2591.1.1 |
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publication LSID |
lsid:zoobank.org:pub:52976D02-C704-48B0-BB52-7DACBE799AD2 |
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persistent identifier |
https://treatment.plazi.org/id/427CCC7C-FFAC-FFF5-01B5-1CFFFA4881B5 |
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treatment provided by |
Felipe |
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scientific name |
Lasioglossum |
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Key to male metallic Lasioglossum View in CoL of Canada
1. Tegula ovoid with at most weak posterior angle, obscurely punctate ( Fig. 10B View FIGURE 10 ) (punctures distinct in L. oceanicum (Cockerell)) .................................................................................................................................................... 2
-. Tegula enlarged with strong posterior angle, distinctly punctate ( Fig. 7A View FIGURE 7 ) ....................................................... 84
2. Forewing with three submarginal cells ( Fig. 2A View FIGURE 2 ) ................................................................................................ 3
-. Forewing with two submarginal cells ( Fig. 2B View FIGURE 2 ) ................................................................................................. 82
3. Mesoscutum with sparse punctures, i>d at least on central disc ( Fig. 10B View FIGURE 10 )......................................................... 4
-. Mesoscutum with dense punctures throughout, i<d on central disc ( Fig. 10A View FIGURE 10 ) ................................................. 78
4. Clypeus with apical margin brown or reddish brown ........................................................................................... 5
-. Clypeus with apical margin yellow...................................................................................................................... 68
5. Mesepisternum with distinct punctures ............................................................................................................... 6
- Mesepisternum without evident punctures ......................................................................................................... 40
6. Metasomal terga metallic blue or green ................................................................................................................ 7
- Metasomal terga brown or red ............................................................................................................................ 15
7. Face with dense pubescence below level of eye emargination; pterostigma pale brownish yellow; metasomal terga with tomentum on basolateral portions ....................................................................................................... 8
- Face with dense pubescence limited to lower paraocular area; pterostigma brown; metasomal terga with, at most, sparse tomentum on basolateral portions .................................................................................................. 12
8. Metasomal terga with obscure punctures on apical impressed areas .................................................................... 9
- Metasomal terga with strong punctures on apical impressed areas ....................... L. semicaeruleum (Cockerell)
9. Metepisternum no more than partially obscured by tomentum; wings subhyaline; postgena dull due to microsculpture ................................................................................................................................................................... 10
- Metepisternum completely obscured by dense tomentum; wings white; postgena polished due to lack of microsculpture ............................................................................................................... L. albohirtum (Crawford)
10. Mesepisternum punctures moderately coarse to very coarse; propodeum with dorsolateral slope and lateral surface distinctly punctate ....................................................................................................................................... 11
- Mesepisternum punctures fine; propodeum with dorsolateral slope and lateral surface rugulose ......................... .................................................................................................................................. L. zephyrum (Smith) [in part]
11. Mesosomal punctures very coarse; tarsi brown ............................................................ L. dashwoodi new species
- Mesosomal punctures relatively fine; tarsi yellow. ................................................. L. prasinogaster new species
12(7). Propodeum with dorsolateral slope punctate (Western) ..................................................................................... 13
- Propodeum with dorsolateral slope rugose (Eastern) ........................................................................................ 14
13. Head elongate (length/width ratio = 1.11); mesoscutal punctures sparse on submedial areas (i=1–4d); tarsi brownish yellow ( Fig. 203A View FIGURE 203 ) ................................................................... L. sandhousiellum new species [in part]
- Head round (length/width ratio = 0.99–1.00); mesoscutal punctures moderately dense on submedial areas (i=1– 2d); tarsi pale brown ( Fig. 205A View FIGURE 205 ) .............................................................................. L. sedi (Sandhouse) [in part]
14(12). Body golden green; hypoepimeral area punctate; size small, head width = 1.30–1.37 mm .................................... ...................................................................................................................................... L. cattellae (Ellis) [in part]
- Body blue; hypoepimeral area rugulose; size large, head width = 1.81 mm ................. L. coeruleum (Robertson)
15(6). Antennal sockets relatively close (IAD/ AOD ratio ≤ 1.6); pronotum with obtuse or, at most, orthogonal dorsolateral angles; pronotal ridge rounded ................................................................................................................. 16
- Antennal sockets very distant (IAD/ AOD ratio approximately 2.0) ( Fig. 75C View FIGURE 75 ); pronotum with acute dorsolateral angles; pronotal ridge strong, not interrupted by oblique sulcus ............................................ L. asteris (Mitchell)
16. Metasomal terga brownish orange ...................................................................................................................... 17
- Metasomal terga brown ....................................................................................................................................... 18
17. Hypoepimeral area polished with distinct puncture; mesoscutal punctures fine ................... L. zephyrum (Smith)
- Hypoepimeral area reticulate-rugose without distinct punctures; mesoscutal punctures moderately coarse ......... .............................................................................................................................................. L. pictum (Crawford)
18(16). Parapsidal line a narrow groove ( Fig. 26A View FIGURE 26 )........................................................................................................ 19
- Parapsidal line a wide furrow ( Fig. 26B View FIGURE 26 ) ...................................................................... L. foveolatum (Robertson)
19. S2–S4 with elongate (1.5–2.5 OD) and dense scopa-like hairs ( Fig. 49A View FIGURE 49 ) ........................................................ 20
- S2–S4 without elongate scopa-like hairs, S2 (except in L. packeri ), at least, with short (≤OD) and sparse hairs ( Fig. 49B View FIGURE 49 ) ............................................................................................................................................................ 21
20. Metasomal terga with apical impressed areas punctate ....................................................... L. knereri new species
- Metasomal terga with apical impressed areas impunctate .............................................. L. subversans (Mitchell)
21(19). Propodeum with dorsolateral slope distinctly punctate ..................................................................................... 22
- Propodeum with dorsolateral slope impunctate ................................................................................................... 26
22. Head and mesosoma bluish; metasomal terga with apical impressed areas punctate; face with dense tomentum below level of eye emargination ......................................................................................................................... 23
- Head and mesosoma greenish; metasomal terga with apical impressed areas impunctate; face with tomentum limited to lower paraocular area........................................................................................................................... 25
23. Mandible and tarsi yellow ( Fig. 119A View FIGURE 119 ) ............................................................................................................... 24
- Mandible and tarsi brown ( Fig. 102A View FIGURE 102 ) ........................................................................ L. ebmerellum new species
24. Clypeus obscured by white tomentum; mesoscutal punctures sparse on anterior half; metasomal terga with abundant basal tomentum ................................................................................................... L. hyalinum (Crawford)
- Clypeus not obscured by tomentum; mesoscutal punctures dense on anterior half (i<d); metasomal terga with, at most, sparse basal tomentum ................................................................................. L. macroprosopum new species
25(22). Head elongate (length/width ratio = 1.11) ( Fig. 203C View FIGURE 203 ); mesoscutal punctures sparse on submedial areas (i=1– 4d); tarsi brownish yellow ( Fig. 203A View FIGURE 203 ) ................................................... L. sandhousiellum new species [in part]
- Head round (length/width ratio = 0.99–1.00) ( Fig. 205C View FIGURE 205 ); mesoscutal punctures moderately dense on submedial areas (i=1–2d); tarsi brown ( Fig. 205A View FIGURE 205 ) ................................................................... L. sedi (Sandhouse) [in part]
26(21). Metasomal terga with apical impressed areas punctate ...................................................................................... 27
- Metasomal terga with apical impressed areas impunctate ................................................................................. 34
27. Head round (length/width ratio = 0.95), and covered in dense, white tomentum ( Fig. 168C View FIGURE 168 ); metapostnotum with striae not reaching more than halfway to posterior margin ........................................ L. packeri new species
- Head variable (length/width ratio = 0.95–1.08), if round then not covered in dense, white tomentum ( Fig. 246C View FIGURE 246 ); metapostnotum with striae reaching posterior margin ............................................................................ 28 28. Head moderately elongate (length/width ratio = 0.99–1.08); flagellomeres short (length/width ratio = 1.20– 1.62) .................................................................................................................................................................... 29
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