Triepeolus, Robertson, 1901

Onuferko, Thomas M., Rightmyer, Molly G., Melo, Gabriel A. R. & Roig-Alsina, Arturo, 2024, A revision of the South American species of the cleptoparasitic bee genus Triepeolus Robertson, 1901 (Hymenoptera: Apidae), European Journal of Taxonomy 931, pp. 1-50 : 45-46

publication ID	https://doi.org/10.5852/ejt.2024.931.2505
publication LSID	lsid:zoobank.org:pub:6A9B744E-A7B6-48FC-B664-985E884BD414
DOI	https://doi.org/10.5281/zenodo.11034738
persistent identifier	https://treatment.plazi.org/id/0E3C9F16-FFBE-FFF6-FF5C-FEA6FAFBBF5C
treatment provided by	Plazi (2024-04-17 13:29:33, last updated 2024-11-27 01:17:53)
scientific name	Triepeolus
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Treatment

Key to both sexes of the species of Triepeolus View in CoL in South America

1. T1 without apical transverse band (only basal band or pair of anterolateral patches of pale tomentum present, which may on each side (or each) have short, medially directed posterolateral extension) ( Figs 2B View Fig , 10B View Fig , 11B View Fig ); if T1 extensively covered in pale tomentum, then tomentum on apical impressed area not forming distinct transverse band ( Fig. 3B View Fig ) .......................................................................... 2

– T1 with both basal and apical transverse bands ( Figs 3A View Fig , 5B View Fig , 6B View Fig , 7B View Fig , 8 View Fig , 12B View Fig , 14B View Fig , 16B View Fig ) .............. 4

2. T1 with pair of anterolateral patches of yellow tomentum, each mesally convex, such that discal patch in dorsal view forming trapezoid or triangle with concave anterolateral sides ( Fig. 10B View Fig ). Paramedian band attaining or nearly attaining anterior margin of mesoscutum ( Fig. 10B View Fig ). Axilla with tip broadly rounded ( Fig. 13A View Fig ). Pseudopygidial area of female circular, with apical margin broadly convex ( Fig. 10D View Fig )........................................................ T. flavipennis ( Friese, 1916) View in CoL (in part)

– T1 with basal band (or pair of anterolateral patches) of yellow tomentum, on each side (or each) mesally concave, such that discal patch in dorsal view semicircular ( Figs 2B View Fig , 11B View Fig ). Paramedian band (if present) not attaining anterior margin of mesoscutum ( Fig. 2B View Fig ). Axilla with tip distinctly pointed ( Fig. 13B View Fig ). Pseudopygidial area of female triangular, with apical margin concave ( Figs 2D View Fig , 11D View Fig ) ................................................................................................................................................... 3

3. Mesoscutum with well-defined paramedian band of yellow tomentum ( Fig. 2B View Fig ) .............................. .................................................................................................... T. alvarengai Moure, 1955 View in CoL (in part)

– Mesoscutum with large anteromedial ovate patch of yellow tomentum ( Fig. 3B View Fig ), which may be sparser medially such that patch suggestive of ill-defined paramedian band ( Fig. 11B View Fig ) .................... ........................................................................................................... T. nemoralis ( Holmberg, 1886) View in CoL

4. T1 basal and apical transverse bands subparallel and joined on each side by distinct longitudinal band, such that discal patch in dorsal view transversely oblong ( Figs 12B View Fig , 16B View Fig ) ............................ 5

– T1 basal band arched and (except in T. rufotegularis View in CoL ) continuous with (and indistinguishable from) lateral longitudinal band, such that discal patch in dorsal view reniform, semicircular, trapezoidal, or triangular ( Figs 3A View Fig , 5B View Fig , 6B View Fig , 7B View Fig , 8 View Fig , 14B View Fig ) ...................................................................................... 6

5. Pro- and mesotrochanters not tuberculate ( Fig. 15A View Fig ). Axilla and mesoscutellum reddish brown and sparsely punctate (most i ≥ 1d) ( Figs 12A–C View Fig , 13C View Fig ). Pseudopygidial area of female circular, with apical margin broadly convex ( Fig. 12D View Fig )......................................... T. osiriformis ( Schrottky, 1910) View in CoL

– Pro- and mesotrochanters distinctly tuberculate ( Fig. 15B View Fig ). Axilla and mesoscutellum black and densely punctate (most i <1d) ( Figs 13D View Fig , 16A–C View Fig ). Pseudopygidial area of female triangular, with apical margin concave ( Fig. 16D View Fig )...... T. tuberculifer Onuferko, Rightmyer & Roig-Alsina sp. nov.

6. Dorsum of mesosoma (at least anterolaterally) with dense, long (≥ ½ MOD), erect/suberect, minutely branched setae ( Fig. 4A–B View Fig ) ............................................................................................................... 7

– Dorsum of mesosoma with only short (<½ MOD), appressed, branched setae ( Fig. 4C–D View Fig )........... 8

7. Mesopleuron with dense, long (≥ ½ MOD), erect/suberect, minutely branched setae only in upper half, with sparse, erect, simple setae among short (<¼ MOD), appressed, branched setae in ventrolateral half ( Fig. 4A View Fig ). T1–T4 transverse bands all widely interrupted medially in both sexes ( Fig. 5B View Fig )................................................................................................. T. atoconganus Moure, 1955 View in CoL

– Mesopleuron with dense, long (clearly>½ MOD), erect/suberect, minutely branched setae throughout ( Fig. 4B View Fig ). At least T3–T4 with apical transverse bands narrowed or narrowly interrupted medially ( Figs 7B View Fig , 8 View Fig ) ..................................................................................... T. cecilyae Packer, 2016

8. T2–T4 apical transverse bands complete ( Fig. 3A View Fig )........................................................................... 9

– T2–T4 apical transverse bands all interrupted medially ( Figs 6B View Fig , 14B View Fig )......................................... 10

9. T1 basal band mesally concave, such that discal patch in dorsal view semicircular ( Fig. 3A View Fig ). Paramedian band not attaining anterior margin of mesoscutum ( Fig. 3A View Fig ). Axilla with tip distinctly pointed ( Fig. 3A View Fig ). Pseudopygidial area of female triangular, with apical margin concave ( Fig. 2D View Fig ) ..................................................................................... T. alvarengai Moure, 1955 (in part)

– T1 basal band on each side mesally convex, such that discal patch in dorsal view forming trapezoid or triangle with concave anterolateral sides ( Fig. 10B View Fig ). Paramedian band attaining or nearly attaining anterior margin of mesoscutum ( Fig. 10B View Fig ). Axilla with tip broadly rounded ( Fig. 13A View Fig ). Pseudopygidial area of female circular, with apical margin broadly convex ( Fig. 10D View Fig ) .................... .................................................................................................. T. flavipennis ( Friese, 1916) (in part)

10. T2 apical transverse band with pair of lobe-like anterolateral extensions ( Fig. 6A–C View Fig ). Metasomal terga with bands of pale-yellow tomentum ( Fig. 6 View Fig ) [ Ecuador and Peru] ............................................ ................................................................................................................. T. buchwaldi ( Friese, 1908)

– T2 apical transverse band without lobe-like anterolateral extensions ( Fig. 14A–C View Fig ). Metasomal terga with bands of white to off-white tomentum ( Fig. 14 View Fig ) [Caribbean region] .......................................... ....................................................................................................... T. rufotegularis ( Ashmead, 1900)

References

Ashmead W. H. 1900. Report upon the aculeate Hymenoptera of the islands of St. Vincent and Grenada, with additions to the parasitic Hymenoptera and a list of the described Hymenoptera of the West Indies. Transactions of the Entomological Society of London 1900. - Part II: 207 - 367.

Friese H. 1908. Die Apidae (Blumenwespen) von Argentina nach den Reisenergebnissen der Herren A. C. Jensen-Haarup und P. Jorgensen in den Jahren 1904 - 1907. Flora og Fauna 10: 1 - 94. https: // doi. org / 10.5962 / bhl. title. 14257

Friese H. 1916. Zur Bienenfauna von Costa Rica (Hym.). Stettiner Entomologische Zeitung 77: 287 - 348.

Holmberg E. L. 1886. Sobre apidos nomadas de la Republica Argentina. Anales de la Sociedad Cientifica Argentina 22: 272 - 286.

Moure J. S. 1955. Notas sobre Epeolini sulamericanos (Hymenopt. - Apoidea). Dusenia 6: 115 - 138.

Packer L. 2016. Two new species of Epeolini from northern Chile, with the first record of Triepeolus for the country and a key to Chilean species of Doeringiella (Hymenoptera: Apidae). Journal of Melittology 64: 1 - 11. https: // doi. org / 10.17161 / jom. v 0 i 64.5775

Schrottky C. 1910. Two new Nomadidae (Hymenoptera) from South America. Journal of the New York Entomological Society 18: 208 - 210.

Figures

Fig. 2. Triepeolus alvarengai Moure, 1955. A–B, D. Holotype, ♀ (DZUP). A. Habitus, lateral view. B. Habitus, dorsal view. C. Male (ZMB ed1bbe/M.G.R. Database No. 11694), habitus, lateral view (image is copyright of the Museum für Naturkunde and reproduced here with permission). D. Pseudopygidial area, dorsal view.

Fig. 10. Triepeolus flavipennis (Friese, 1916). A. Female (CNC 753863), habitus, lateral view. B. Female (CNC 808414), habitus, dorsal view. C. Male (PCYU), habitus, lateral view. D. Female (CNC 808413) pseudopygidial area, dorsal view.

Fig. 11. Triepeolus nemoralis (Holmberg, 1886). A–B. Female (FAUBA 327). A. Habitus, lateral view. B. Habitus, dorsal view. C. Male (CNC 1801912), habitus, lateral view. D. Female (MACN) pseudopygidial area, dorsal view.

Fig. 3. Triepeolus spp., habitus, dorsal view. A. T. alvarengai Moure, 1955 female specimen (MACN) in which T1 has both basal and apical transverse bands. B. T. nemoralis (Holmberg, 1886) male specimen (DZUP) in which much of T1 is covered in pale-yellow tomentum.

Fig. 5. Triepeolus atoconganus Moure, 1955. A, D. Female (UNMSM MHN 1350/M.G.R. Database No. 1333). A. Habitus, lateral view. B. Female (NHMUK NHMUK013620580), habitus, dorsal view. C. Male (NHMUK NHMUK013620577), habitus, lateral view. D. Pseudopygidial area, dorsal view.

Fig. 6. Triepeolus buchwaldi (Friese, 1908). A. Female (AMNH M.G.R. Database No. 1328), habitus, lateral view. B, D. Female (AMNH M.G.R. Database No. 3707). B. Habitus, dorsal view. C. Male (INHS 387483), habitus, lateral view. D. Pseudopygidial area, dorsal view.

Fig. 7. Triepeolus cecilyae Packer, 2016. A–B, D. Female (PCYU). A. Habitus, lateral view. B. Habitus, dorsal view. C. Holotype, ♂ (PCYU), habitus, lateral view. D. Pseudopygidial area, dorsal view.

Fig. 8. Triepeolus cecilyae Packer, 2016, metasoma of male, dorsal view. A. Holotype (PCYU). B. Non-type specimen from southern Peru (ZMB).

Fig. 12. Triepeolus osiriformis (Schrottky, 1910). A, D. Female (AMNH M.G.R. Database No. 3709). A. Habitus, lateral view. B. Female (AMNHAMNH_IZC 00292362/M.G.R. Database No. 3121), habitus, dorsal view. C. Male (AMNH M.G.R. Database No. 1329), habitus, lateral view. D. Pseudopygidial area, dorsal view.

Fig. 14. Triepeolus rufotegularis (Ashmead, 1900). A–B, D. Female (USNM M.G.R. Database No. 1332). A. Habitus, lateral view. B. Habitus, dorsal view. C. Male (PCYU CCDB-34570 B08), habitus, lateral view. D. Pseudopygidial area, dorsal view.

Fig. 16. Triepeolus tuberculifer Onuferko, Rightmyer & Roig-Alsina sp. nov. A–B, D. Holotype, ♀ (ICN HY-1056). A. Habitus, lateral view. B. Habitus, dorsal view. C. Allotype, ♂ (FSCA M.G.R. Database No. 3704), habitus, lateral view. D. Pseudopygidial area, dorsal view.

Fig. 13. Axillae and mesoscutellum of male, dorsal view. A. Triepeolus flavipennis (Friese, 1916) (PCYU). B. T. nemoralis (Holmberg, 1886) (CNC 1801912). C. T. osiriformis (Schrottky, 1910) (AMNH M.G.R. Database No. 1329). D. T. tuberculifer Onuferko, Rightmyer & Roig-Alsina sp. nov., allotype (FSCA M.G.R. Database No. 3704).

Fig. 15. Left pro- and mesotrochanters of male, frontal view. A. Triepeolus osiriformis (Schrottky, 1910) (FSCA). B. T. tuberculifer Onuferko, Rightmyer & Roig-Alsina sp. nov., allotype (FSCA M.G.R. Database No. 3704), showing distinct protuberances (blue arrows).

Fig. 4. Head and mesosoma of female, oblique view. A. Triepeolus atoconganus Moure, 1955 (NHMUK NHMUK013620580). B. T. cecilyae Packer, 2016 (PCYU). C. T. buchwaldi (Friese, 1908) (AMNH M.G.R. Database No. 3707). D. T. rufotegularis (Ashmead, 1900) (USNM M.G.R. Database No. 1332). Blue arrows indicate dense, long (≥½ MOD), erect/suberect, minutely branched setae.