Andrena portosanctana, von Cockerell, 1922

Kratochwil, A., Schwabe, A. & Scheuchl, E., 2014, Andrena (Suandrena) portosanctana COCKERELL, 1922 and A. (Suandrena) maderensis COCKERELL, 1922 - new taxonomical and ecological data for two closely related endemic bee species of the Madeira Archipelago, Portugal, Linzer biologische Beiträge 46 (2), pp. 1535-1567 : 1551-1552

Female A. portosanctana , A. maderensis

Concerning average body length, females of A. maderensis are larger than those of A. portosanctana ( Fig. 30a ), the same is true concerning wing length ( Fig. 30b ).

C o l o u r Head: black, part slightly greenish, mandible mostly with a red tip, differences between species in flagellum colour ( A. portosanctana : flagellomeres 3-10 lower side yellow, upper side brownish, A. maderensis : flagellomeres brownish). Mesosoma: tibia 1 and 2 black, tibia 3 black, pars parte reddish brown, mediotarsi black, pars parte reddish brown, differences between species in wing colour ( A. portosanctana : hyalin, A. maderensis : subhyalin), in both species veins (reddish/black) brown, pterostigma (orange) with a dark margin. Metasoma: T1-4 black partly greenish, with black to dark reddish brown depression zone; pygidium black.

P u b e s c e n c e. Head: A. portosanctana with white hairs in front, yellowish hairs beside and between the antennal sockets, upper part of paraocular area with brownish hairs in contrast to A. maderensis with yellowish, sometimes yellowish-reddish hairs in front, with longer yellowish-reddish hairs beside and between the antennal socket, upper part of paraocular area also with brownish hairs; clypeus of A. portosanctana only laterally denser with yellowish-white hairs in contrast to A. maderensis with yellowish hairs, top-orientated and in most cases with a hairless line in the centre; genal area of A. portosanctana with dense whitish hairs, brighter than paraocular hairs in contrast to A. maderensis with dense long yellowish hairs; facial fovea of A. portosanctana with lower part yellowish, upper part brownish hairs in contrast to A. maderensis with lower part whitish hairs and upper part brownish hairs; vertex of A. portosanctana with dark brownish (black) hairs, A. maderensis with longer brownish and dark brown hairs. Mesosoma: mesoscutum and scutellum of A. portosanctana lateral with yellowish-white hairs, in the centre only some brownish hairs, in contrast to A. maderensis with yellowish-reddish, sometimes yellowish hairs; mesepisternum of A. portosanctana with long yellowish-white hairs, in contrast to A. maderensis with yellowish-reddish, sometimes yellowish hairs; propodeal corbicula of A. portosanctana with dense white hairs, no hairs in the centre, in contrast to A. maderensis with some yellowish-reddish (yellowish) hairs, some shorter hairs in the centre; trochanteral and femoral flocculus of A. portosanctana with white hairs, in contrast to A. maderensis with yellowish hairs; tibial scopa of A. portosanctana dorsal with reddish-brown hairs with brownish tips and dorsobasal with brownish hairs and ventral with yellowish whitish hairs; in the case of A. maderensis dorsal with yellowish-reddish hairs with brownish tips, at the base with brown hairs and ventral with yellowish-reddish hairs. Metasoma: tergites of A. portosanctana : T1-4 with white partly closed hair bands, T 5 in the centre with dark brownish hairs and lateral long white hairs, T6 with dense dark brownish hairs reaching to pygidium, centre of T1 and T2 with long, T3-4 with shorter whitish hairs; tergites of A. maderensis : T1 with a (whitish-yellowish) yellowish hair row and lateral fragmented fine bands, T2-4 with yellowish hair bands (T4 reduced), T 2 in the centre open, T5 with dense brownish hairs central and lateral yellowish hairs, T6 with dense brownish hairs reaching to the pygidium, in the centre of T1 and T2 with long, T3-4 with shorter brownish hairs.

S t r u c t u r e Head: no differences in HL/HW ( Fig. 30c ); differences in FL1:FL2:FL3 ( A. portosanctana : 2.4:1.1:1.0, A. maderensis : 2.5:1.0:1.2), in OOD:POD:OCD ( A. portosanctana : 3.5:2.7:1.0, A. maderensis : 3.0:2.1:1.0), in HW:MsW:MtW ( A. portosanctana : 1.1:1.1:1.0, A. maderensis : 1.0:1.0:1.0), in FVL/FVW- Index ( Fig. 30d ) and in clypeal length ( Fig. 30e ); labrum in A. portosanctana with basal area margin rounded, as a general rule slightly trapezoid (sometimes undulated or curled), with no or with a fragmented apical process of the basal area (sometimes asymmetric and/or emarginated), beneath long yellowish/reddish hairs in contrast to A. maderensis with a short trapezoid apical process, usually (slightly) asymmetric and emarginated, sometimes left and right side thickened; in some cases margin of the basal area undulated, beneath with long reddish hairs; no significant differences in labrum process width at the top ( Fig. 30f ). Mesosoma: PSl and PBAl of A. portosanctana smaller than in A. maderensis ( Fig. 30g,h ); propodeum sculpture of A. portosanctana rugose, as a general rule with some longitudinal lamina and a small central lateral boundary line in contrast to A. maderensis (rugose in the centre, only some longitudinal lamina or missing, small central lateral boundary line).

Figures

Fig. 30: Morphological differences between females of A. portosanctana (N = 19) and A. maderensis (N = 30): (a) body length; (b) wing length; (c) head length/width index; (d) facial fovea index; (e) clypeal length; (f) labrum process width.