New species, new synonyms, and resurrected taxa: A review of West and Central Palaearctic members of the genus Pseudoanthidium (Apoidea: Megachilidae) Kasparek, Max Zootaxa 2024 2024-11-25 5541 1 1 50 Kasparek 2024 [151,535,367,394] Insecta Megachilidae Pseudoanthidium Animalia Hymenoptera 11 12 Arthropoda species microrubrum sp. nov.  ( Figs 6, 20, 21, 22, 23, 24, 25)   Material.  Holotype. ♂. MOROCCO: Fès-Meknès, Boulemane, R503, SE of Ait Karmosse( 33.2440°N- 4.6762°E),  1750 m, T. Woodleg.; COI sequence: ABABZ002-23( OLL: tjw293).—  Paratype: 1♀, MOROCCO: Fès-Meknès, Boulemane, R503,  7 kmSE Boulemane( 33.2966°N- 4.6896°E),  1900 m,  22.v.2022, T. Woodleg.; COI sequence: ABABZ003-23( OLL: tjw297).  Genetic barcode information. Thegenetic barcode of the holotype(tjw293) and the paratype(tjw297) are available ( ABABZ002-23, ABABZ003-23). TheBIN is BOLD: AFC0423. Informationon the nearest neighbours, barcode gap, and mean genetic distances are provided under  P. farsiense.   Diagnosis.A small  Pseudoanthidiumwith orange maculation.The female is characterized by a strongly protruding apical ridge of the clypeus, combined with a triangular T6 featuring apical emargination, a fine punctation of scutum and terga, a dark brown scopa, and its diminutive size. Other  Pseudoanthidiumspecieswith red or orange are much larger (  P. royoi, 10–12 mm) or possess distinctive morphological differences, such as a flat clypeus (  P. canariense,  P. jacobii), a bilobed apex of T6 (  P. royoi), or coarse punctation of scutum and terga (  P. puncticolle). In comparison with other orange or red-brown  Pseudoanthidiumspecies, the male of this species is distinguished from  P. royoiby its small size ( 7 mmvs. 11.5 mm) and a straight apical margin of T6 (protruding with a broad apical emargination in  P. royoi). Additionally, the lower face of this species is orange-red (black in  P. canariense;dark yellow-orange in  P. jacobii). Regarding  P. puncticolle, where females often exhibit red-brown maculation, the maculation of males is typically yellow, and they have a much coarser tergal punctation compared to  P. microrubrum.   Description. Female( Fig. 6a). 7 mm.— Head: Clypeus orange, with basal margin arched inwards; finely punctate with a basal impunctate area; subapical area transversely depressed, very finely rugosely punctate; apical ridge thickened with some erect denticles; ridge dark red-brown, and polished ( Fig. 6d); mandible orange, gradually becoming brown towards the teeth; five black teeth, to1 being the strongest, with the others almost equally-sized; teeth separated by acute incisions; lower paraocular area with large orange spot not reaching the antennal socket; broad orange preoccipital band reaching the middle of the eye; hairs on head scattered, dark grey to black.—  Mesosoma: Scutum with dense, shallow punctation and shining interstices; scutellum rounded in profile, little overhanging propodeum; orange; pronotal lobe lamellate; omaulus rounded; pubescence of mesosoma short, dark grey.— Metasoma: T1 entirely red except for a diffuse black area in the middle ( Fig. 6c); T2–T6 orange, interrupted by a median black area; T6, in dorsal view, a wide-angular triangle with a median projection with a small apical emargination to accommodate the sting; S1–S5 orange, S6 dark grey, triangular; scopal hairs dark brown.— Legs: Trochanteres and basal areas of femora black, the rest orange; orange bristles on inner face of hind basitarsus.— Wing: Moderately brown infuscated.  Male( Fig. 6b). 7 mm.— Head: Black; lower part of paraocular area dirty yellow; minute yellow spot behind the eye; dense, long white pubescence on lower face; mandible reddish-brown with three strong teeth.—  Mesosoma: Black with dense punctation; pronotal lobe small, black with shallow lamella, hidden by dense pubescence; scutellum and axillae crescent-shaped in dorsal view, slightly convexly bulging; in profile, rounded medially and acute angular laterally; tegula reddish-brown.— Metasoma: T1–T6 black with broad lateral orange-brown bands; median space between the bands larger in anterior terga than in posterior terga; depression in area next to the orange-brown bands also orange-brown with a bronze-coloured touch; T7 brownish-yellow, emarginate at apical margin; S1, S2 and base of S3 with felt-like cover of plumose, branched hairs; S3 with a fan-like fringe of corkscrew-like curved and apically hooked hairs; S5 with a submedian pair of black combs and another pair of larger black combs on lateral arms ( Fig. 6e).— Genitalia: Gonostyli paddle-shaped; penis valves slender, unfused, but touching at the apex.   Derivatio nominis. Name combined from “micro” small, and “rubrum” red. The name should indicate that this is the smallest red  Pseudoanthidiumspecies.  Distribution: Only known from the province of Boulemane in the Région Fès Meknès of Morocco( Fig. 26a). 4988611311 OLL T. Wood Morocco 1750 33.244 Fes-Meknes 6 4.6762 Boulemane 11 12 1 1 holotype 4988611318 2022-05-22 OLL T. Wood Morocco 1900 33.2966 Fes-Meknes 6 4.6896 Boulemane 11 12 1 1 paratype