Megachile ( Xanthosarus ) dentitarsus Sladen, 1919

Pritchard, Zoe A., Ivie, Michael A., O’Neill, Kevin M. & Delphia, Casey M., 2025, A faunal treatment of the Megachile (Hymenoptera: Megachilidae) of Montana with a key for their identification, Zootaxa 5683 (1), pp. 1-51 : 32

publication ID

https://doi.org/10.11646/zootaxa.5683.1.1

publication LSID

lsid:zoobank.org:pub:73980A59-8CA6-4AA2-8DAD-FB9403203A5B

DOI

https://doi.org/10.5281/zenodo.16986358

persistent identifier

https://treatment.plazi.org/id/03C17C29-FFF4-FF87-73BD-7FD090E97787

treatment provided by

Plazi

scientific name

Megachile ( Xanthosarus ) dentitarsus Sladen, 1919
status

 

Megachile ( Xanthosarus) dentitarsus Sladen, 1919 View in CoL

Megachile dentitarsus Sladen, 1919: 85 View in CoL . Drons 2012: 58. Adhikari et al. 2019: Supplementary Table S4.

Megachile ( Xanthosarus) dentitarsus View in CoL ; Mitchell 1936: 127. Butler 1965: 11. Hurd 1979: 2067. Scott et al. 2011: 56. Sheffield et al. 2011: 73.

Diagnosis. The female of M. dentitarsus can be identified by its consistently wide, white apical setal bands on T3–5 and its 5-toothed mandibles ( Fig. 7F View FIGURE 7 ), with the deepest emargination between the 3 rd and 4 th tooth, strongly angled towards the 4 th tooth. Females are most commonly confused with M. latimanus / M. perihirta females, which have medially incomplete apical setal bands. The male of M. dentitarsus can be identified by its widely expanded and ventrally excavated probasitarsus ( Fig. 8B View FIGURE 8 ), the smooth, glabrous ventral protuberance on its mesobasitarsus ( Fig. 8D View FIGURE 8 ), and the small spine on the ventral mesepisternum (viewed ventrally, directly anterior to mesocoxa). Males are most similar to M. perihirta , in which the ventral mesepisternum (viewed ventrally, directly anterior to mesocoxa) has a smooth, spineless carina instead of a spine.

Notes. In Montana, this species is widespread east of the continental divide ( Fig. 1J View Figure 1 ). Photographs, a full morphological description, and notes on the biology of this soil-nesting species can be found in Sheffield et al. (2011).

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Hymenoptera

Family

Megachilidae

Genus

Megachile

Loc

Megachile ( Xanthosarus ) dentitarsus Sladen, 1919

Pritchard, Zoe A., Ivie, Michael A., O’Neill, Kevin M. & Delphia, Casey M. 2025
2025
Loc

Megachile ( Xanthosarus ) dentitarsus

Scott, V. & Ascher, J. & Griswold, T. & Nufio, C. 2011: 56
Sheffield, C. S. & Ratti, C. & Packer, L. & Griswold, T. 2011: 73
Hurd, P. D. 1979: 2067
Butler, G. D. 1965: 11
Mitchell, T. B. 1936: 127
1936
Loc

Megachile dentitarsus

Drons, D. J. 2012: 58
Sladen, F. W. L. 1919: 85
1919
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