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 : 1552-1553

Male A. portosanctana , A. maderensis

Like females, male A. maderensis have a larger average body length than those of A. portosanctana ( Fig. 31a ); the same trend becomes evident concerning wing length ( Fig. 31b ), but there is a high variation due to small specimen numbers.

C o l o u r. No differences except wing colour ( A. portosanctana : hyalin, A. maderensis : subhyalin).

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 and upper part of paraocular area with brownish hairs in contrast to A. maderensis with yellowish-reddish in front, longer yellowishreddish hairs beside/between the antennal socket and upper part of paraocular area with brownish hairs; clypeus of A. portosanctana with whitish lateral hairs, hairless in the centre in contrast to A. maderensis with yellowish lateral hairs, mostly hairless line in the centre; genal area of A. portosanctana with dense whitish hairs, brighter as paraocular hairs and upper area with brownish hairs in contrast to A. maderensis with dense long yellowish hairs and upper area with brownish hairs; in vertex pubescence no differences. Mesosoma: mesoscutum of A. portosanctana with whitish hairs lateral, in the centre only with a few hairs, some brownish in contrast to A. maderensis with yellowish- reddish (-brownish) hairs; scutellum of A. portosanctana similar to mesoscutum, in contrast to A. maderensis with lateral (yellowish) reddish-brown hairs, in the centre brownish hairs; mesepisternum of A. portosanctana with long whitish hairs, in contrast to A. maderensis with long yellowish-whitish hairs. Metasoma: tergites of A. portosanctana : T2-4 with fine whitish hair bands, in the centre slightly open, T6 with central reddish, lateral whitish hairs, T7 with reddish hairs, in the centre T1 and T2 with long, T3-4 with shorter whitish hairs; tergites of A. maderensis : T1 with a yellowishwhitish hair row, T2-4 with fine yellowish-whitish hair bands, in the centre mostly open, T5 with yellowish (reddish) hairs central and lateral with whitish (-yellowish) hairs, T6 with reddish hairs reaching to the pygidium, in the centre of T1 and T2 (T3) with long whitish, (T3) T4 with shorter reddish hairs; T8 of A. portosanctana with narrow with white hairs, T8 of A. maderensis with narrow with reddish hairs.

S t r u c t u r e.Head: no differences in HL/HW ( Fig. 31c ) and HW:MsW:MtW index; differences in FL1:FL2:FL3 ( A. portosanctana : 3.5:2.6:1.0, A. maderensis : 3.3:2.1:1.0) and in OOD:POD:OCD ( A. portosanctana : 3.5:2.6:1.0, A. maderensis : 3.2:2.1:1.0), and in clypeal length ( Fig. 31d ); labrum in A. portosanctana flat and rounded, without exposed process of the basal area, beneath in the centre a hollow with whitish/yellowish hairs, left and right side with a hairless area, followed by an area with long yellowish hairs in contrast to A. maderensis flat and rounded, without exposed process, beneath in the centre a hollow with yellowish/reddish hairs, left and right side with a hairless area, followed by an area with long yellowish hairs; significant differences in labrum process width at the top ( Fig. 31e ). Mesosoma: PSl and PBAl of A. portosanctana smaller than in A. maderensis ( Fig. 31f,g ); propodeum sculpture of A. portosanctana rugose in the centre, no lateral boundary line in contrast to A. maderensis (rugose in the centre, as a general rule with longitudinal lamina, small central lateral boundary line).

There are no differences in genital morphology.

Species characteristics within the genus Suandrena — phylogenetical and

Figures

Fig. 31 ff.: Morphological differences between males of A. portosanctana (N = 4) and A. maderensis (N = 13): (e) labrum process width; (f) stigma length; (g) propodeum length.