Nomada ruficornis
Creators: name: Lim, Kayun
name: Lee, Seunghwan
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Apidae
Nomada
Nomada ruficornis

description: Key to South Korean species of Nomada ruficornis species-group (modification following Mitai & Tadauchi 2007; Won & Kim 2013; Smit 2018)
Females
1. HTS absent......................................................................................... 2
– HTS present......................................................................................... 3
2. Antennae entirely black, paraocular area predominantly black, sometimes with smear amber line on the margin............................................................................................ Nomada esana Tsuneki
– Antennae entirely yellow anteriorly, dark brown posteriorly, paraocular area tinged with bright yellow............................................................................................... Nomada tsunekiana Schwarz
3. HTS long and as thin as hair on hind tibiae................................................................. 4
– HTS length variable and thicker than hair on hind tibiae except long and thin posteriormost seta....................... 7
4. HTS 4 in number, evenly distributed with space............................................................. 5
– HTS more than 10 in number without distinct space.......................................................... 6
5. Propodeal triangle dark orange with median thick black line......................... Nomada sabaensis Tsuneki 1973
– Propodeal triangle entirely black....................................... Nomada shirakii Yasumatsu & Hirashima
6. HTS curved, equal in length..................................................... Nomada harimensis Cockerell
– HTS straight, short gradually........................................................ Nomada pacifica Tsuneki
7. HTS spathulate.................................................................. Nomada aswensis Tsuneki
– HTS not spathulate.................................................................................... 8
8. Scutellum black............................................................. Nomada atra Lim & Lee, sp.n.
– Scutellum reddish or bright yellow....................................................................... 9
9. Scutellum tinged with bright yellow..................................................................... 10
– Scutellum dark orange to red........................................................................... 12
10. Propodeum laterally with two dark orange dots............................ Nomada fulvicornis jeizoensis Matsumura
– Propodeum entirely black without any dots................................................................ 11
11. Scutellum flat, nearly rectangular with shallow furrow.................................. Nomada kaguya Hirashima
– Scutellum highly raised with deep median furrow..................................... Nomada lathburiana (Kirby)
12. Propodeal triangle with two yellow zigzag patterns......................................... Nomada icazti Tsuneki
– Propodeal triangle without two yellow zigzag patterns....................................................... 13
13. HTS distinctly black.................................................................................. 14
– HTS light brown to dark brown......................................................................... 18
14. HTS stout, round at tip............................................................ Nomada guttulata Schenck
– HTS subacute to acute at tip............................................................................ 15
15. Paraocular area dark orange, sometimes tinged with bright yellow............................................. 16
– Paraocular area mostly black, lateral margin weekly tinged with dark red........................................ 17
16. Labral tooth on apical one-third, laterally with serrate carina............................ Nomada calloptera Cockerell
– Labral tooth at apex............................................................. Nomada maculifrons Smith
17. Propodeal triangle red with median black line..................................... Nomada leucophthalma (Kirby)
– Propodeal triangle black............................................................. Nomada fusca Schwarz
18. Mandible bidentate................................................................................... 19
– Mandible simple or truncate............................................................................ 20
19. Scutellum covered with golden plumose.................................................. Nomada opaca Alfken
– Scutellum covered with white hair........................................... Nomada biaulacis Lim & Lee, sp.n.
20. T5 entirely red...................................................................................... 21
– T5 with bright yellow band............................................................................ 23
21. HTS dark brown, round at tip..................................................... Nomada flavoguttata (Kirby)
– HTS light brown, sharp at tip........................................................................... 22
22. Paraocular area and supraclypeal area dark orange. Propodeal triangle red with median black line.................................................................................................. Nomada hakonensis Cockerell
– Paraocular area and supraclypeal area black, lateral margin of paraocular area weekly tinged with dark red. Propodeal triangle entirely black.................................................................. Nomada montverna Tsuneki
23. HTS stout, truncate at tip, distributed without space.................................... Nomada pyrifera Cockerell
– HTS subacute, distributed with space.................................................................... 24
24. T4 entirely dark brown................................................. Nomada adustaspinae Lim & Lee, sp.n.
– T4 tinged with yellow................................................................................. 25
25. Scutellum foveolate, the biggest interspace as wide as puncture.............................. Nomada abtana Tsuneki
– Densely foveolate without wide interspace................................................................ 26
26. Mandible truncate................................................................. Nomada striata Fabricius
– Mandible simple..................................................................................... 27
27. Antennae entirely dark orange................................................. Nomada panzeri orientis Tsuneki
– Antennae posteriorly tinged with black................................................................... 28
28. Propodeal triangle black; HTS irregularly distributed............................ Nomada amurensis Radoszkowsky
– Propodeal triangle black laterally tinged with dark red; HTS evenly distributed.................. Nomada fervens Smith
Males
1. Clypeus entirely black......................................................... Nomada harimensis Cockerell
– Clypeus tinged with yellow............................................................................. 2
2. HTS absent.......................................................................................... 3
– HTS present......................................................................................... 4
3. Scape ventrally and paraocular area entirely yellow, distinct two yellow oval maculation on scutellum............................................................................................... Nomada tsunekiana Schwarz
– Scape ventrally tinged with dark orange and black; paraocular area mostly black, margin of its yellow, scutellum entirely black............................................................................. Nomada esana Tsuneki
4. Gonostylus distinctly long and slender, acute apically................................... Nomada maculifrons Smith
– Gonostylus blunt and thick.............................................................................. 5
5. Supraclypeal area fully bright yellow................................................ Nomada pyrifera Cockerell
– Supraclypeal area fully black or tinged with quadrate yellow maculation......................................... 6
6. Mandible truncate..................................................................................... 7
– Mandible simple or dentate............................................................................. 9
7. Clypeus with yellow triangular maculation, somewhat laterally tinged with black............... Nomada pacifica Tsuneki
– Clypeus mostly black; apical margin with yellow band........................................................ 8
8. T2 basally tinged with dark brown, adults active in summer................................. Nomada abtana Tsuneki
– T2 dark orange, adults active in spring................................................ Nomada striata Fabricius
9. Pygidial plate triangularly notched....................................................................... 10
– Pygidial plate not triangularly notched.................................................................... 11
10. T1 entirely dark brown..................................................... Nomada amurensis Radoszkowsky
– T1 entirely pale brown, laterally with two dark brown oval maculation.................... Nomada calloptera Cockerell
11. Pygidial plate shallowly and roundly notched.............................................................. 12
– Pygidial plate distinctly notched........................................................................ 15
12. T2–T6 with distinct wide yellow band.............................................. Nomada lathburiana (Kirby)
– Partly with yellow band or widely darkened, but at least T2–T3 without yellow band............................... 13
13. HTS slender, difficult to differentiate among surrounding hair........................... Nomada montverna Tsuneki
– HTS thickness variable, evidently distinguished from surrounding hair.......................................... 14
14. Basoventral lobe distinctly present................................................... Nomada guttulata Schenck
– Basoventral lobe absent......................................................... Nomada flavoguttata (Kirby)
15. Scutellum entirely yellow......................................................... Nomada kaguya Hirashima
– Scutellum with yellow or red two oval maculation, sometimes entirely black..................................... 16
16. T2 laterally with distinct yellow maculation, T3 laterally with small yellow spots, remaining entirely dark brown........ 17
– Yellow maculation present on T3–5...................................................................... 18
17. F2 distinctly longer than F3..................................................... Nomada hakonensis Cockerell
– F2 as long as F3................................................................. Nomada aswensis Tsuneki
18. Mandible bidentate................................................................... Nomada opaca Alfken
– Mandible simple..................................................................................... 19
19. HTS thick, cylindrical............................................... Nomada fulvicornis jeizoensis Matsumura
– HTS thin, hair-like................................................................................... 20
20. Abdomen entirely black with inverted triangle maculation........................... Nomada leucophthalma (Kirby)
– Abdomen without inverted triangle maculation............................................................. 21
21. T2 dark brown with semicircle maculation on middle… Nomada shirakii Yasumatsu & Hirashima
– T2 laterally with yellow maculation...................................................................... 22
22. Abdomen tinged with pale brown....................................................................... 23
– Abdomen tinged with only dark brown and yellow.......................................................... 24
23. Gonostylus sharp, crescent-like........................................................ Nomada fervens Smith
– Gonostylus thick, triangular........................................................... Nomada icazti Tsuneki
24. Clypeus with yellow triangular maculation, somewhat tinged with black laterally......... Nomada panzeri orientis Tsuneki
– Clypeus mostly black, apical margin with yellow band....................................................... 25
25. F1 about half as long as F2, scutellum with two red oval maculation.......................... Nomada fusca Schwarz
– F1 one third of F2, scutellum entirely black................................ Nomada adustaspinae Lim & Lee, sp. n.
description: Published as part of Lim, Kayun & Lee, Seunghwan, 2023, A key to species of Nomada ruficornis species-group (Hymenoptera: Apidae) of South Korea, with descriptions of three new species, pp. 44-60 in Zootaxa 5228 (1) on pages 56-58, DOI: 10.11646/zootaxa.5228.1.2, http://zenodo.org/record/7523971