Andrena ( Micrandrena ) enslinella Stöckhert, 1924

Pisanty, Gideon, Santerre, Rémi, Martin, Teresa, Cardinal, Sophie & Wood, Thomas J., 2025, Integrated taxonomic revision of the mining bee subgenus Andrena (Micrandrena) (Hymenoptera: Andrenidae) in the Levant and Cyprus, Arthropod Systematics & Phylogeny 83, pp. 573-655 : 573-655

3.1.2.10. Andrena ( Micrandrena) enslinella Stöckhert, 1924

Figures 15 I , 20 U

Andrena enslinella Stöckhert, 1924: 169–171, ♀ [S Germany: ZSMC].

Andrena chimaera Blüthgen, 1949: 81 [N Germany: ZMB].

Andrena enslinella Stöckhert : Stöckhert 1942: 573 (first description of ♂).

Distribution and habitat.

Broadly west and central Palaearctic ( Gusenleitner & Schwarz 2002). Newly reported from the Levant * ( Jordan *, Lebanon *).

Flight period.

Late April to mid-May, in Europe until June.

Flower preferences.

Presumably broadly oligolectic on Brassicaceae ( Brassica , Capsella , Cardaria , Crambe , Erucastrum , Isatis , Sinapis , Sisymbrium ). Also visits Asteraceae , Euphorbiaceae , Fabaceae , Plantaginaceae and Rosaceae ( Westrich 1989; IUCN 2024).

Remarks.

The two Lebanese specimens show a 2.5 % difference in COI barcodes compared to Central European populations. Morphologically, there are some slight differences. In the female sex, the Lebanese specimens show the scutum between the punctures with fine granular microreticulation, the surface dull, whereas European specimens (e. g. from Bulgaria) have the scutum polished and shining between the punctures. Specimens from Turkey are intermediate, with the scutum broadly shining but with fine shagreen. The tergal discs of Lebanese females are also slightly more finely punctate (Fig. 15 I ). In the male sex, this same structural difference can be seen, but the genital capsule displays the same truncate gonocoxites, enlarged gonostyli, and narrow penis valves which are produced into extremely acute points (Fig. 20 U ). Given the only small genetic distance and the overall very similar morphology (particularly in the genital capsule), we prefer to treat Levantine specimens as a slightly isolated and slightly diverging population of a widely distributed Andrena enslinella .

Material examined.

JORDAN ● 1 ♀; west, Jordan Valley, Dayr Alla [Dayr ‘ Allah]; 27 Apr. 1996; Ma. Halada leg.; OLML. – LEBANON ● 1 ♂; Mount Lebanon Governorate, Jabal Moussa Biosphere Res.; 1400 m a. s. l.; 14 May 2023; V. Soon leg.; BOLD accession no. NATBE 234-25; TUZ 341644 ● 1 ♀; Mount Lebanon Governorate, Kesrouane, Jabal Moussa Biosphere Res., Mchati; 1100 m a. s. l.; 16 May 2023; V. Soon leg.; BOLD accession no. NATBE 233-25; TUZ 347651. – TURKEY ● 1 ♀; Pozantı, Tekir; 7 Jun. 2006; M. Kafka leg.; BOLD accession no. ANDGP 013-25; OLML.

Figures

Figure 15. Andrena (Micrandrena) females, clypei (A – C), scuta and scutella (D – F) and terga 1–3 (G – L). A, D A. tringa; B, K A. alshaykh; C, E A. calandra; F A. convexifrons; G A. magunta; H A. luscinia; I A. enslinella; J A. libanica; L A. lindbergella.

Figure 20. Andrena (Micrandrena) males, terga 2–3 (A, B), vertices (C), genitalia (D – V) and eighth sterna (W). A, M A. libanica; B, N A. lindbergella; C, T A. magunta; D A. yelkouan; E A. extenuata; F, W A. tkalcui; G A. sulfurea; H A. calandra; I A. convexifrons; J A. spreta; K A. friedmani; L A. alshaykh; O A. cervina; P A. phoenicia; Q A. stolida; R A. rugothorace; S A. lunaris; U A. enslinella; V A. luscinia.