Stilbochlora, Engel

Engel, Michael S., 2019, New species of the augochlorine bee genus Stilbochlora, with a preliminary key (Hymenoptera: Halictidae), Journal of Melittology 2019 (89), pp. 1-15 : 14

Preliminary Key to Species of Stilbochlora

(females only)

1. Basal area of propodeum with numerous, closely spaced, basal striae ( Figs. 16–18 ), striae reaching to midlength of basal area or beyond ....................... 2

—. Basal area of propodeum with short, sparse, basal striae ( Fig. 15 ), striae scarcely reaching midlength of basal area and widely separated ( Figs. 11 , 15 ), sometimes striae somewhat effaced .................... S. eickworti (Engel et al.)

2. Basal area of propodeum with striae extending well beyond midlength, medially reaching or nearly to rounded posterior border with posterior surface ( Figs. 12, 13 ), giving striate area a roughly triangular shape ( Figs. 16, 17 ) ...... 3

—. Basal area of propodeum with striae reaching to about midlength of basal area ( Figs. 14 , 18 ), separated from rounded posterior border with posterior surface by about ocellar diameter, not projecting medially, thus striate area of a crescent shape ( Fig. 18 ) ................................................... S. wedmanorum , n. sp.

3. Integument brilliant metallic green with predominantly golden coppery highlights ( Figs. 1, 2 , 9 , 12 , 16 ); scape largely testaceous; clypeal apex testaceous ( Fig. 9 ); legs largely light testaceous .............................. S. graceae , n. sp.

—. Integument brilliant metallic blue green with green to purple highlights ( Figs. 3, 4 , 8 , 13 , 17 ); scape dark brown; clypeal apex dark brown ( Fig. 8 ); legs largely dark brown .......................................................................... S. kateae , n. sp.

Figures

Figures 15–18. Mesoscutella, metanota, and propodea of species of Stilbochlora Engel et al. 15. Stilbochlora eickworti (Engel et al.). 16. S. graceae, new species. 17. S. kateae, new species. 18. S. wedmanorum, new species.

Figures 11–14. Mesosomal dorsa of species of Stilbochlora Engel et al. 11. Stilbochlora eickworti (Engel et al.). 12. S. graceae, new species. 13. S. kateae, new species. 14. S. wedmanorum, new species.

Figures 1–2. Holotype female of Stilbochlora graceae, new species. 1. Lateral habitus. 2. Dorsal habitus.

Figures 7–10. Facial views of species of Stilbochlora Engel et al. 7. Stilbochlora wedmanorum, new species. 8. S. kateae, new species. 9. S. graceae, new species. 10. S. eickworti (Engel et al.).

Figures 3–4. Holotype female of Stilbochlora kateae, new species. 3. Lateral habitus. 4. Dorsal habitus.