Andrena orientalis, Kratochwil, 2015

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), Linzer biologische Beiträge 47 (2), pp. 1403-1437 : 1412

Andrena orientalis nov.sp. ( Israel, Syria): differential diagnosis to A. tiaretta s.str.

The following features of the specimens from Israel and western Syria are unlike those of the specimens from Spain, Morocco and Algeria ( A. tiaretta s.str.):

C o l o u r Head (Fig. 5a): brown, in some cases black ( A. tiaretta s.str: all black); flagellomeres 3-10: without exception light brown ( A. tiaretta s.str.: dorsal brown, ventral lighter brown); mandible black with a reddish tip or totally reddish ( A. tiaretta s.str.: always black with a reddish tip). Mesosoma (Fig. 5b): femur, tibia and basitarsus brown/reddish-brown or totally reddish-brown ( A. tiaretta s.str: black, brown only pars parte reddish-brown); mediotarsi without exception totally reddish-brown (Fig. 8a) ( A. tiaretta s.str.: only pars parte reddish brown); wings light toned, very light toned or not toned; ptersostigma yellowish-reddish marginated, in the centre yellowish, veins reddish (Fig. 2a) ( A. tiaretta s.str.: in all cases light toned; pterostigma reddish-brown marginated, in the centre reddish or reddish-yellowish [pars parte yellowish] and veins reddish). Metasoma (Fig. 8b): T1-4 black-brown, always with reddish-brown depression zone ( A. tiaretta s.str.: black with black to dark reddish-brown depression zone). T1-T4 not clearly punctured.

P u b e s c e n c e Head (Fig. 5a): upper zone of genal area in all cases without brownish hairs ( A. tiaretta s.str.: with brownish hairs); facial fovea in all cases with whitish hairs ( A. tiaretta s.str.: upper zone with reddish-brown hairs); vertex with some long whitish-yellowish hairs but no yellowish-reddish hairs ( A. tiaretta s.str.: all specimens with whitish-yellowish and slightly reddish hairs). Mesosoma (Fig. 5b): mesoscutum and scutellum without yellowish-reddish hairs laterally; ( A. tiaretta s.str.: with yellowish-reddish hairs laterally); tibial scopa without exception with whitish hairs dorsal and ventral ( A. tiaretta s.str.: pars parte dorsobasal with reddish hairs).

S t r u c t u r e. No differences to A. tiaretta s.str.