Lasioglossum
Creators: name: Murao, Ryuki
name: Lee, Heung-Sik
name: Tadauchi, Osamu
Publisher: name: Zenodo
Year: 2015
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Halictidae
Lasioglossum

description: Key to the species of the Lasioglossum series in South Korea
Females
1. Mesoscutum with anterior edge reflexed upward, medio-anterior region with punctures forming a dense transverse ridge (Fig.
2A); T1 basally with dense, thick tomentum (Fig. 2B).................... Lasioglossum subopacum subopacum (Smith) - Mesoscutum flat and punctate on medio-anterior margin (Fig. 2C); T1 without tomentum (Fig. 2D).................... 2 2. Metapostnotum and posterior surface of propodeum demarcated by transverse carina on posterior margin of metapostnotum
(sometimes weakly so) (Fig. 2E)......................................................................... 3 - Metapostnotum and posterior surface of propodeum demarcated by distinct oblique carina on posterior surface (Figs. 2F, 4D)
or not distinctly demarcated by carina (Fig. 4 C).............................................................. 7 3. Metapostnotum of propodeum dull, with distinct tessellation among ridges (Fig. 3A).............. … L. exiliceps (Vachal) - Metapostnotum of propodeum shiny, nearly smooth among ridges (Fig. 3B)....................................... 4 4. Posterior surface of propodeum with complete carina extending dorsally to transverse carina (Fig. 3 C)...................
.................................................................................. L. proximatum (Smith) - Posterior surface of propodeum with incomplete carina not extending to transverse carina (Fig. 3 D).................... 5 5. Supraclypeus shiny, with very weak tessellation (Fig. 3 E); T1 medially with sparser PP (IS = 7 d in maximimu; Fig. 4A)....
......................................................................... L. primavera Sakagami & Maeta - Supraclypeus dull, with distinct tessellation (Fig. 3 F); T1 medially with denser PP (IS = 1.5 d in maximum; Fig. 4B)........
................................................................................. L. sutshanicum Pesenko 6. Propodeum with ratio between width of apex of oblique ridges (bidirectional arrows in Fig. 4 C) and maximum width of poste-
rior surface 0.38–0.68 (n = 13)........................................................................... 7 - Propodeum with ratio between width of apex of oblique ridges (bidirectional arrows in Fig. 4 D) and maximum width of poste-
rior surface 0.05–0.2 (n = 14)............................................................................ 9 7. PP on T1 basally and medially with dense PP (IS = 1–1.5 d; Fig. 4 E).......................... L. upinense (Morawitz) - PP on T1 medially sparser than that on both basally and apically (IS =>1.5 d in maximum; Fig. 4 F).................... 8 8. Mesoscutum and mesoscutellum mixed with dark hairs; PP on lower declivitous surface of T1 sparser than below species (IS =
4.5 d in maximum; Fig. 5A)…............................................ L. nipponicola Sakagami & Tadauchi - Mesoscutum and mesoscutellum with pale yellowish brown hairs over entire surface, not mixed with dark ones; PP on lower
declivitous surface of T1 denser than above species (IS = 2 d in maxmimu; Fig. 5B)............. L. kansuense (Blüthgen) 9. Mesoscutum medially to posteriorly with sparser PP (IS = 3 d in maximum; Fig. 5 C)............ L. denticolle (Morawitz) - Mesoscutum medially to posteriorly with denser PP (IS = 1 d in maximum; Fig. 5 D)............................... 10 10. Integument of mesoscutum with distinct tessellation; lateral and posterior surfaces of propodeum with dense tomentose hairs.
............................................................................. L. circularum Fan & Ebmer - Integument of mesoscutum nearly smooth; lateral and posterior surfaces of propodeum with sparse tomentose hairs....... 11 11. Lateral and oblique carinae of posterior surface of propodeum strongly developed (Fig. 6A); submedial patch of T1 with
sparser PP (IS = 3.5 d in maximum; Fig. 6 C)................................................. L. occidens (Smith) - Lateral and oblique carinae of posterior surface of propodeum more weakly developed (Fig. 6B); submedial patch of T1 with
denser PP (IS = 2 d in maximum; Fig. 6 D)................................................. L. formosae (Strand)
Males
The male of L. sutshanicum could not examine in the present study. Therefore, it is not include in the following key.
1. Mesoscutum reflexed upward on medio-anterior margin similar to Fig. 2A............ L. subopacum subopacum (Smith)
- Mesoscutum flat on medio-anterior margin such as Fig. 2C.................................................... 2
2. Mesoscutum medially and posteriorly with sparser PP (IS = 3 d in maxmimum) such as Fig. 5 C... L. denticolle (Morawitz)
- Mesoscutum medially and posteriorly with denser PP (IS = 1.5 d in maximum) such as Fig. 5 D........................ 3
3. S6 with a unique hair tuft (Figs. 7–8)...................................................................... 4
- S6 without hair tuft.................................................................................... 9
4. Hair tuft on S6 ∩ or Ω shaped (Figs. 7A–C, 8B–C)........................................................... 5
- Hair tuft on S6 of different shape (Figs. 7D, 8A, 8D).......................................................... 7
5. Apical part of hair tuft on S6 longitudinally narrow (Fig. 7A)............................ L. circularum Fan & Ebmer
- Apical part of hair tuft on S6 thick (Figs. 7B–C, 8B–C)....................................................... 6
6. Submedial patch of T1 with sparser PP in both sexes (IS = 3.5 d in maximum; white circle in Fig. 6 C)... L. occidens (Smith)
- Submedial patch of T1 with denser PP in both sexes (IS = 2 d in maximum; white circle in Fig. 6 D)... L. formosae (Strand)
7. Hair tuft on S6 boomerang-shaped (Fig. 8D)............................................. L. upinense (Morawitz)
- Hair tuft on S6 of different shape (Figs. 7D, 8A)............................................................. 8
8. Apical part of hair tuft on S6 small and short (Fig. 8A)......................... L. nipponicola Sakagami & Tadauchi
- Apical part of hair tuft on S6 longitudinally elongate (Fig. 7D).............................. L. kansuense (Blüthgen)
9. Head nearly as long as wide or slightly longer than wide (HL/HW ratio = 0.98–1.06, n = 10).......... L. exiliceps (Vachal)
- Head broader than long (HL/HW ratio = 0.85–0.91, n = 10).................................................... 5
10. F2 approximately 2× F1; male genitalia with ventral retrorse lobe............................. L. proximatum (Smith)
- F2 approximately 1.2× F1; male genitalia without ventral retrorse lobe................ L. primavera Sakagami & Maeta
description: Published as part of Murao, Ryuki, Lee, Heung-Sik & Tadauchi, Osamu, 2015, Bees of the Lasioglossum series (Hymenoptera: Halictidae) in South Korea, with an illustrated keys to species, pp. 511-534 in Zootaxa 4044 (4) on pages 530-531, DOI: 10.11646/zootaxa.4044.4.3, http://zenodo.org/record/238644