Andrena (Longandrena)

Radchenko, Vladimir G., Allahverdi, Mohammad & Fekrat, Lida, 2021, Revision of the mining bee subgenus Andrena (Longandrena) (Hymenoptera: Apoidea: Andrenidae), Zootaxa 5032 (4), pp. 489-515 : 493

Key to the species of Andrena (Longandrena)

Females:

1. Process of the labrum trapezoidal, apically narrowed and deeply emarginated in the middle ( Fig. 108 ), marginal part of labrum broadly rounded, laterally angulated ( Fig. 107 ). Clypeus medially concave. Facial foveae broad, occupying 2/3 ocellocular distance ( Figs 99, 102 ). Upper part of frons densely longitudinally striated. Galeal fringe with long setae ( Fig. 101 ). Inner hind tibial spur strongly widened, its narrowed apical part curved almost at right angles ( Fig. 24 ). 2 nd –5 th tarsal segments of all legs slightly narrowed basally ( Fig. 28 ). Pygidial plate entirely smooth and flattened ( Fig. 112 ).......... A. nativa Osytshnjuk.

- Basal elevated part of labrum with broader apex ( Figs 15 , 61 ). Clypeus medially convex. Facial foveae narrower ( Figs 10, 11 , 59 ). Upper part of frons roughly shagreened without vertical striations ( Fig. 11 ). Galeal fringe with more short setae ( Figs 16 , 66 ). Inner hind tibial spur narrower, its apical part less curved or almost straight ( Figs 22, 23 ). 2 nd –5 th tarsal segments of all legs strongly narrowed basally ( Figs 25, 26 ). Medial part of pygidial plate elevated ( Figs 30 , 72 )........................ 2.

2. Head frontally almost square, approximately equal to width or slightly longer than its width; facial foveae occupying slightly over 1/2 ocellocular distance ( Figs 10, 11 ). Process of labrum large, its apex emarginate ( Fig. 15 ). Glossa very long and narrow, 18 times longer than its width at base ( Fig. 17 ). Mesoscutum medially and scutellum entirely polished, very sparsely punctured at margins and with almost impunctate central part ( Fig. 20 ). Inner hind tibial spur neither bent nor broadened near base, its apical part almost straight ( Fig. 22 ). Tarsal claws of all legs with long internal tooth ( Fig. 25 ). Metasomal terga polished, shiny; T1–T4 with continuous apical hair bands, moderately narrowed medially ( Fig. 29 ). Pygidial plate medially strongly convex, with coarse mesh-like ribbing, surrounded laterally by flat narrow marginal areas ( Fig. 30 ). Body pubescence white........................................................................................ A. longiceps Morawitz.

- Head frontally rounded and weakly wider than its length; facial foveae occupying 1/3 ocellocular distance ( Fig. 59 ). Process of labrum basal area shorter, apically broad without emargination ( Fig. 61 ). Glossa shorter and thicker, 7 times longer than its width at base ( Fig. 67 ). Mesoscutum and scutellum entirely finely shagreened, sparsely punctured. Inner hind tibial spur slightly bent and broadened near base, its apical part curved ( Fig. 23 ). Tarsal claws of all legs with reduced internal tooth ( Figs 26, 27 ). Metasomal terga shagreened except polished apical part; T1–T4 with apical fasciae, interrupted on T1–T2 ( Fig. 71 ). Pygidial plate medially elevated part flat narrow, triangular, with fine mesh-like ribbing, surrounded laterally by flat wide marginal areas ( Fig. 72 ). Body pubescence pale-yellow.......................................... A. dolini Osytshnjuk.

Figures

FIGURE 104–114. Structure of Andrena nativa female body (paratype): 104—Malar area; 105—Mandible; 106—Subantennal area; 107—Labrum in frontal view; 108—Labrum in ventral view; 109—Scutum; 110—Propodeum; 111—Midbasitarsus; 112—Pygidial plate; 113—Metasoma in dorsal view; 114—Metasoma in ventral view.

FIGURE 96–103. Female of Andrena nativa (holotype and paratype): 96—Female in dorsal view; 97—Female in lateral view; 98—Flagellum; 99—Head in frontal view; 100—Head in lateral view; 101—Galea in lateral view; 102—Vertex; 103—Glossa (marked by a red line). (98—holotype, 96, 97, 99–103— paratype).

FIGURE 22–31. Structure of A. (Longandrena) females body: 22–24—Hind leg tibial spur; 25–28—Middle leg 2nd–5th tarsi and tarsal claws; 29—Metasoma in dorsal view; 30—Pygidial plate; 31—Metasoma in ventral view. (22, 25, 29–31—Andrena longiceps; 23, 26, 27—Andrena dolini holotype; 24, 28—Andrena nativa paratype).

FIGURE 8–15. Female of Andrena longiceps: 8—Female in dorsal view; 9—Female in lateral view; 10—Head in frontal view; 11—Vertex; 12—Subantennal area; 13—Malar area; 14—Flagellum; 15—Labrum.

FIGURE 57–64. Female of Andrena dolini (holotype): 57—Female in dorsal view; 58—Female in lateral view; 59—Head in frontal view; 60—Malar area; 61—Labrum and mandibles; 62—Flagellum; 63–64—Anterior part of hypostomal area in lateral view (the red arrows show hypostomal carina).

FIGURE 16–21. Structure of Andrena longiceps female body: 16—Galea in lateral view; 17—Glossa; 18—Galea in dorsal view with maxillary and labial palpi; 19—Base of glossa; 20—Scutum and scutellum; 21—Propodeum.

FIGURE 65–73. Structure of Andrena dolini female body (holotype): 65—Mouthparts in latero-ventral view; 66—Galea in lateral view; 67—Glossa; 68—Scutum and scutellum; 69—Propodeum; 70—Midbasitarsus; 71—Metasoma in dorsal view; 72—Pygidial plate; 73—Metasoma in ventral view.