Hofferia

Müller, Andreas & Trunz, Vincent, 2014, Palaearctic osmiine bees of the genera Hofferia and Stenoheriades (Megachilidae, Osmiini): biology, taxonomy and key to species, Zootaxa 3765 (2), pp. 175-186 : 178-180

Key to the species of Hofferia

Females

1 Preapical ridge between basal and apical half of clypeus medially with wide, rather deep and more or less triangular emargination ( Fig. 4 ). Body length 8.5–10mm ..................................................... Hofferia mauritanica

1* Preapical ridge between basal and apical half of clypeus medially with two shallow and roundish emarginations separated by small triangular tooth ( Fig. 5 ). Body length 8.5–10.5mm .................................. Hofferia schmiedeknechti

Males

1 Medioapical appendix of sternum 1 as long as its basal width to slightly shorter ( Fig. 6 ). Punctation of bulging part of sternum 1 medially very sparse ( Fig. 6 ). Transversally oriented pilosity on sternum 5 rather loose and not tightly appressed to sternal surface. Body length 7.5–9.5mm ......................................................... Hofferia mauritanica

1* Medioapical appendix of sternum 1 half as long as its basal width to slightly longer ( Fig. 7 ). Punctation of bulging part of sternum 1 medially often rather dense except for a narrow longitudinal zone ( Fig. 7 ). Transversally oriented pilosity on sternum 5 dense and tightly appressed to sternal surface. Body length 7.5–10mm ....................... Hofferia schmiedeknechti

Figures

FIGURE 4 – 9. 4: Hofferia mauritanica, head of female. 5: Hofferia schmiedeknechti, head of female. 6: Hofferia mauritanica, sternum 1 of male. 7: Hofferia schmiedeknechti, sternum 1 of male. 8: Stenoheriades eingeddica, head of female. 9: Stenoheriades eingeddica, terga 5 – 7 of male.