Braunsapis alqarnii, Engel & Alqarni & Hannan & Hinojosa-Díaz & Michener, 2014

Engel, Michael S., Alqarni, Abdulaziz S., Hannan, Mohammed A., Hinojosa-Díaz, Ismael A. & Michener, Charles D., 2014, Allodapine Bees in the Arabian Peninsula (Hymenoptera: Apidae): A New Species of Braunsapis from the Sarawat Mountains, with an Overview of the Arabian Fauna, American Museum Novitates 2014 (3801), pp. 1-1 : 1-

KEY TO THE ALLODAPINI Of THE ARABIAN PENINSULA

Four species are presently recognized in the fauna: Braunsapis arabica Engel and Dathe , B. alqarnii n. sp., Compsomelissa ocellata (Michener) , and C. boerneri Alfken ( Michener, 1966, 1975a; Engel, 2011; Engel and Dathe, 2011; Alqarni et al., in press). Here we provide a key to this fauna as an aid to regional melittologists.

1. Forewing 2m-cu present (figs. 1, 10); body black, commonly with yellow areas on face and pronotum (figs. 1–3, 10–14, 16, 17) (genus Braunsapis Michener )........................................2

—Forewing 2m-cu absent (fig. 18); all tagmata with extensive yellow areas (figs. 15, 18) (genus Compsomelissa Alfken ) .................................................................................................................. 3

2. Male scape black and paraocular areas bordering epistomal sulcus black (fig. 3); male metafemur as in figure 4; genitalia with pronounced medioventral apical process on gonocoxite; smaller species, total length 3.10–3.90 mm in males, 3.65–4.35 mm in females, head width 1.14–1.17 mm in males, 1.12–1.20 mm in females ( Saudi Arabia: Sarawat Mts.) ................. ............................................................................................. B. alqarnii Engel and Michener , n. sp.

—Male scape with conspicuous yellow mark ventrally and paraocular areas border epistomal sulcus yellow (fig. 14); male metafemur unmodified; genitalia without medioventral apical process; larger species, total length 4.40–4.50 mm in males, 4.80–5.50 mm in females, head width 1.33–1.35 mm in males, 1.33–1.47 mm in females ( United Arab Emirates) .............. .............................................................................................................. B. arabica Engel and Dathe

3. Vertex yellow; ocelli enlarged so that ocellocular distance about half of ocellar diameter ( Yemen, Saudi Arabia: Jazan) ................................................................... C. ocellata (Michener)

—Vertex with black band between summits of compound eyes including ocelli (sometimes faded in older specimens such that area is more brownish in ocellocular area); ocelli not greatly enlarged, ocellocular distance about equal to ocellar diameter ( Yemen) ................. ............................................................................................................................. C. boerneri Alfken