Lasioglossum

Murao, Ryuki, Lee, Heung-Sik & Tadauchi, Osamu, 2015, Bees of the Lasioglossum series (Hymenoptera: Halictidae) in South Korea, with an illustrated keys to species, Zootaxa 4044 (4), pp. 511-534: 530-531

publication ID

http://dx.doi.org/10.11646/zootaxa.4044.4.3

publication LSID

lsid:zoobank.org:pub:AC09A256-A83D-46B7-A71D-E84B5ABFD138

persistent identifier

http://treatment.plazi.org/id/0204411B-FFDD-C855-41C5-FB72FA06FB34

treatment provided by

Plazi

scientific name

Lasioglossum
status

 

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.

2 A); T 1 basally with dense, thick tomentum (Fig. 2 B).................... Lasioglossum subopacum subopacum (Smith)   - Mesoscutum flat and punctate on medio-anterior margin (Fig. 2 C); T 1 without tomentum (Fig. 2 D).................... 2 2. Metapostnotum and posterior surface of propodeum demarcated by transverse carina on posterior margin of metapostnotum

(sometimes weakly so) (Fig. 2 E)......................................................................... 3 - Metapostnotum and posterior surface of propodeum demarcated by distinct oblique carina on posterior surface (Figs. 2 F, 4 D)

or not distinctly demarcated by carina ( Fig. 4 View FIGURE 4. A, B, E, F C).............................................................. 7 3. Metapostnotum of propodeum dull, with distinct tessellation among ridges ( Fig. 3 A View FIGURE 3. A, B ).............. … L. exiliceps (Vachal)   - Metapostnotum of propodeum shiny, nearly smooth among ridges ( Fig. 3 B View FIGURE 3. A, B )....................................... 4 4. Posterior surface of propodeum with complete carina extending dorsally to transverse carina ( Fig. 3 View FIGURE 3. A, B C)...................

.................................................................................. L. proximatum (Smith)   - Posterior surface of propodeum with incomplete carina not extending to transverse carina ( Fig. 3 View FIGURE 3. A, B D).................... 5 5. Supraclypeus shiny, with very weak tessellation ( Fig. 3 View FIGURE 3. A, B E); T 1 medially with sparser PP (IS = 7 d in maximimu; Fig. 4 A View FIGURE 4. A, B, E, F )....

......................................................................... L. primavera Sakagami & Maeta   - Supraclypeus dull, with distinct tessellation ( Fig. 3 View FIGURE 3. A, B F); T 1 medially with denser PP (IS = 1.5 d in maximum; Fig. 4 B View FIGURE 4. A, B, E, F )........

................................................................................. L. sutshanicum Pesenko   6. Propodeum with ratio between width of apex of oblique ridges (bidirectional arrows in Fig. 4 View FIGURE 4. A, B, E, F 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 View FIGURE 4. A, B, E, F D) and maximum width of poste-

rior surface 0.05–0.2 (n = 14)............................................................................ 9 7. PP on T 1 basally and medially with dense PP (IS = 1–1.5 d; Fig. 4 View FIGURE 4. A, B, E, F E).......................... L. upinense (Morawitz)   - PP on T 1 medially sparser than that on both basally and apically (IS => 1.5 d in maximum; Fig. 4 View FIGURE 4. A, B, E, F F).................... 8 8. Mesoscutum and mesoscutellum mixed with dark hairs; PP on lower declivitous surface of T 1 sparser than below species (IS =

4.5 d in maximum; Fig. 5 A View FIGURE 5. A, B )…............................................ 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 T 1 denser than above species (IS = 2 d in maxmimu; Fig. 5 B View FIGURE 5. A, B )............. L. kansuense (Blüthgen)   9. Mesoscutum medially to posteriorly with sparser PP (IS = 3 d in maximum; Fig. 5 View FIGURE 5. A, B C)............ L. denticolle (Morawitz)   - Mesoscutum medially to posteriorly with denser PP (IS = 1 d in maximum; Fig. 5 View FIGURE 5. A, B 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. 6 A View FIGURE 6. A, B ); submedial patch of T 1 with

sparser PP (IS = 3.5 d in maximum; Fig. 6 View FIGURE 6. A, B C)................................................. L. occidens (Smith)   - Lateral and oblique carinae of posterior surface of propodeum more weakly developed ( Fig. 6 B View FIGURE 6. A, B ); submedial patch of T 1 with

denser PP (IS = 2 d in maximum; Fig. 6 View FIGURE 6. A, B 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. 2 A............ L. subopacum subopacum (Smith)  

- Mesoscutum flat on medio-anterior margin such as Fig. 2 C.................................................... 2

2. Mesoscutum medially and posteriorly with sparser PP (IS = 3 d in maxmimum) such as Fig. 5 View FIGURE 5. A, B C... L. denticolle (Morawitz)  

- Mesoscutum medially and posteriorly with denser PP (IS = 1.5 d in maximum) such as Fig. 5 View FIGURE 5. A, B D........................ 3

3. S 6 with a unique hair tuft ( Figs. 7–8 View FIGURE 7. A – D View FIGURE 8. A – D )...................................................................... 4

- S 6 without hair tuft.................................................................................... 9

4. Hair tuft on S 6 ∩ or Ω shaped ( Figs. 7 A –C View FIGURE 7. A – D , 8 B –C View FIGURE 8. A – D )........................................................... 5

- Hair tuft on S 6 of different shape ( Figs. 7 D View FIGURE 7. A – D , 8 A, 8 D View FIGURE 8. A – D ).......................................................... 7

5. Apical part of hair tuft on S 6 longitudinally narrow ( Fig. 7 A View FIGURE 7. A – D )............................ L. circularum Fan & Ebmer  

- Apical part of hair tuft on S 6 thick ( Figs. 7 B –C View FIGURE 7. A – D , 8 B –C View FIGURE 8. A – D )....................................................... 6

6. Submedial patch of T 1 with sparser PP in both sexes (IS = 3.5 d in maximum; white circle in Fig. 6 View FIGURE 6. A, B C)... L. occidens (Smith)  

- Submedial patch of T 1 with denser PP in both sexes (IS = 2 d in maximum; white circle in Fig. 6 View FIGURE 6. A, B D)... L. formosae (Strand)  

7. Hair tuft on S 6 boomerang-shaped ( Fig. 8 D View FIGURE 8. A – D )............................................. L. upinense (Morawitz)  

- Hair tuft on S 6 of different shape ( Figs. 7 D View FIGURE 7. A – D , 8 A View FIGURE 8. A – D )............................................................. 8

8. Apical part of hair tuft on S 6 small and short ( Fig. 8 A View FIGURE 8. A – D )......................... L. nipponicola Sakagami & Tadauchi  

- Apical part of hair tuft on S 6 longitudinally elongate ( Fig. 7 D View FIGURE 7. A – D ).............................. 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. F 2 approximately 2 × F 1; male genitalia with ventral retrorse lobe............................. L. proximatum (Smith)  

- F 2 approximately 1.2 × F 1; male genitalia without ventral retrorse lobe................ L. primavera Sakagami & Maeta