Andrena tiaretta Kratochwil, 2015, s.str.
Creators: name: Kratochwil, Anselm
Publisher: name: Zenodo
Year: 2015
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Andrenidae
Andrena
Andrena tiaretta

description: Andrena tiaretta s.str. (Spain, Morocco, Algeria)   
C o l o u r.Head (Fig. 18a): black; scapus black/brown; flagellomeres 1 and 2 as a rule darker than flagellomeres 3-10, flagellomeres 3-10: dark brown to brown. Mesosoma (Fig. 18b): black; femur, tibia and basitarsus reddish-brown or pars parte reddish-brown, in two cases black (higher variation between specimens of Spain and Algeria; specimens of Morocco consistently reddish-brown); mediotarsi reddish-brown; wings light toned; pterostigma yellowish (two cases reddish-yellowish and one case reddish in specimens of Spain, one case reddish-yellowish concerning an Algerian specimen), pterostigma brown marginated, veins reddish-brown (Fig. 15a). Metasoma (Fig. 21a): T1-5 black, with black to dark reddish-brown depression zone; T6 reddish-brown or T1-T5 depression reddish (higher variation between specimens from Spain and Algeria; specimens of Morocco consistently reddish-brown).  
P u b e s c e n c e Head (Fig. 18a): frontview: whitish hairs, paraoccular area with whitish hairs, no or only some brown hairs, hair length different; sideview: paraoculararea with whitish and with or without some brown hairs; clypeus with longer whitish hairs; scapus with long whitish-yellowish (three specimens with totally white) hairs, no difference between dorsal and ventral site; genal area with light brownish dorsal hairs in specimens from Spain (one specimen yellowish), light brownish or brown dorsal hairs in specimens from Morocco, brown dorsal hairs in specimens from Algeria (in two specimens white hairs); ventral constantly whitish hairs; vertex with some long whitishyellowish, slightly reddish hairs. Mesosoma (Fig. 18b): mesoscutum and scutellum only with some whitish-yellowish hairs intermingled with brown hairs, hairs especially situated in front, laterally yellowish hairs, or totally scattered covered with yellowish hairs; mesepisternum with whitish, pars parte yellowish hairs. Metasoma (Fig. 21a): tergites scarcely hairy, T 2-3 in most of all specimens with lateral longer whitish hairs, no distinct hair bands (3 specimens from Spain, Morocco and Algeria with fragmentary whitish hairbands in T2 / T3), but hair rows between tergite and tergite depression (hair rows T2, T3 often fragmentary); T5 and T6 with white, slightly yellowish hairs (one specimen from Spain yellowish); sternite 8 with long whitish (in two cases yellowish) hairs at the end.  
S t r u c t u r e Head: vertex surface densely sculptured; face above antennal fossae with longitudinal rugulae, interrugal space shiny; inner eye margin converging weakly; clypeus similar to females but in all cases without impunctate median line; labrum process trapezoid, emarginated, ends left and right side slightly thickened. Mesosoma (Fig. 18b): mesoscutum and scutellum similar to female, very scattered punctured, shallow punctures (pd = 0.14-0.28 μm), with developed parapsidal lines; propodeum: strongly rugose primarily in the centre and in the dorsolateral area, no lateral boundary line. Metasoma (Fig. 21a): similar to female, very scattered punctured (pd = 0.14 μm), posterior depression of (T1)T2-T4 not well marked; tergite 1 carinate. Genital (Fig. 21b): penisvalvae slightly vesicularly thickened, ending distal acuminated; gonocoxit inward concave, dorsal lobus well developed.
description: Published as part of Kratochwil, Anselm, 2015, Revision of the Andrena (Micrandrena) tiaretta group: redescription of A. tiaretta WARNCKE, 1974 and description of two new species (A. cyrenaica nov. sp. and A. orientalis nov. sp.) demarcating the central and eastern part of the range (Libya, Israel, Syria), pp. 1403-1437 in Linzer biologische Beiträge 47 (2) on pages 1417-1418, DOI: 10.5281/zenodo.5282333