Pseudoanthidium (Exanthidium) eximium, (Giraud, 1863) (Giraud, 1863)

Kasparek, Max, 2024, New species, new synonyms, and resurrected taxa: A review of West and Central Palaearctic members of the genus Pseudoanthidium (Apoidea: Megachilidae), Zootaxa 5541 (1), pp. 1-50 : 47

P. eximium group (subgenus Exanthidium)

4 T6 with hooked or spiniform lateral protrusion............................................................. 5

– T6 laterally bulging, hooked or spiniform protrusion absent................................................... 7

5 Base of emargination of T7 pointed (emargination V-shaped); posterior margin of scutellum in dorsal view straight................................................................................................... P. eximium

– Base of emargination straight (emargination U-shaped); posterior margin of scutellum rounded in dorsal view........... 6

6 Scutum black; yellow band on T1 interrupted in the middle, transition from disc to depression on anterior terga smooth................................................................................................. P. enslini

– Scutum with yellow or reddish-brown anterolateral maculation; yellow band on T1 not interrupted; transition from disc to depression step-like.......................................................................... P. guichardi

7 Emargination of T7 little widening in apical third; T7 without transparent margin; outer faces of femora and tibiae black............................................................................................... P. pictipes

– Emargination of T7 strongly widening in apical third; T7 with transparent margin; outer faces of femora and tibiae yellow... 8

8 Yellow preoccipital band reaching mandibular base; scutum with yellow anterolateral boomerang-shaped band; apical margin of S2 with median protrusion............................................................... P. deserticolum

– Yellow stripe on upper gena not reaching mandibular base and not extending onto vertex; anterolateral marking on scutum absent; apical margin of S2 truncated......................................................... P. wahrmanicum

9 Omaulus lamellate along its entire length to lower end...................................................... 10

– Omaulus not lamellate................................................................................ 12