| Wasps & Bees |
| Andrena bicolor |
| Authority | : | Fabricius, 1775 |
| Nederlands | : | Tweekleurige zandbij |
| English | : | Gwynne's mining bee |
| Deutsch | : | Zweifarbige Sandbiene |
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| Amstelveen; 21 March 2009. Male feeding at Coltsfood (Tussilago farfara). | ||
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Andrena cf. subopaca |
| Authority | : | Nylander, 1848 |
| Nederlands | : | Witkopdwergzandbij |
| English | : | Impunctate mini-miner |
| Deutsch | : | Glanzlose Zwergsandbiene |
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| Amstelveen; 21 March 2009. |
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Lasioglossum cf. calceatum |
| Authority | : | (Scopoli, 1763) |
| Nederlands | : | Gewone geurgroefbij |
| English | : | Common furrow bee |
| Deutsch | : | Gewöhnliche Schmalbiene |
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| Amstelveen; 21 March 2009. |
| Osmia rufa |
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| Amstelveen; 21 - 22 March 2009. Male feeding at Coltsfood (Tussilago farfara). |
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| Andrena fulva |
| Authority | : | (Müller, 1766) |
| Nederlands | : | Vosje |
| English | : | Tawny mining bee |
| Deutsch | : | Fuchsrote Lockensandbiene |
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| Amstelveen; 31 March 2009. Male feeding at Willow catkins (Salix spec). | ||
| Andrena flavipes |
| Authority | : | Panzer, 1799 |
| Nederlands | : | Grasbij |
| English | : | Yellow-legged mining bee |
| Deutsch | : | Gewöhnliche Bindensandbiene |
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| Amstelveen; 1 April 2009. Left, male feeding at Draba verna; right, female feeding at Salix spec. |
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| Andrena praecox |
| Authority | : | (Scopoli, 1763) |
| Nederlands | : | Vroege zandbij |
| English | : | Small sallow mining bee |
| Deutsch | : | Frühe Lockensandbiene |
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| Amstelveen; 1 April 2009. Female resting at branch of willow, Salix spec. |
| Colletes cunicularius |
| Authority | : | (Linnaeus, 1761) |
| Nederlands | : | Grote zijdebij |
| English | : | Early colletes |
| Deutsch | : | Frühlings-Seidenbiene |
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| Amstelveen; 1 April 2009. |
I first saw a few females of this species in 2008. This spring they were much more numerous, and both males and females were present - as shown by this copulating pair. |
| Sphecodes albilabris |
| Authority | : | (Fabricius, 1793) |
| Nederlands | : | Grote bloedbij |
| Deutsch | : | Riesen-Blutbiene |
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| Amstelveen; 1 April 2009. | |
This species is a cuckoo-bee of Colletes cunicularius above. What amazes me is that one year after I first saw C. cunicularius here, several females of its cuckoo-bee were already present. This suggests that last years brood was already parasitized; which in turn suggests that both species arrived almost simultaneously. Since the source population may well be 20 km away, I find this surprising. |
| Amauronematus spec. |
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| Amsterdamse bos; 3 April 2009. Female feeding at willow (Salix spec.). |
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| Andrena fulva |
| Authority | : | (Müller, 1766) |
| Nederlands | : | Vosje |
| English | : | Tawny mining bee |
| Deutsch | : | Fuchsrote Lockensandbiene |
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| Amstelveen; 3 April 2009. Female feeding at Sloe (Prunus spinosa). |
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| Dolerus cf. nigratus |
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| Amstelveen; 5 April 2009. right, feeding at willow (Salix spec.). |
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| Chalcidoidea: Perilampus spec. |
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| Amsterdamse bos; 5 April 2009. | ||
| Andrena nitida |
| Authority | : | (Müller, 1776) |
| Nederlands | : | Viltvlekzandbij |
| English | : | Scarce black mining bee |
| Deutsch | : | Glänzende Düstersandbiene |
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| Amstelveen; 5 April 2009. Male. | |
| Nomada spec. |
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| Amstelveen; 13 April 2009. |
| Nematus spec. |
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| Amstelveen; 13 April 2009. | |
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Ichneumonidae, subfam. Anomaloninae |
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| Amstelveen; 13 April 2009. |
| Andrena ventralis |
| Authority | : | Imhoff, 1832 |
| Nederlands | : | Roodbuikje |
| Deutsch | : | Rotbauch-Sandbiene |
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| Amstelveen; 18 April 2009. Female. | |
| Andrena barbilabris & Leucophora spec. |
| Authority | : | (Kirby, 1802) |
| Nederlands | : | Witbaardzandbij |
| English | : | Sandpit mining bee |
| Deutsch | : | Bärtige Sandbiene |
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| Amstelveen; 18 April 2009. Female. |
| A. barbilabris |
| Authority | : | (Kirby, 1802) |
| Nederlands | : | Witbaardzandbij |
| English | : | Sandpit mining bee |
| Deutsch | : | Bärtige Sandbiene |
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| Amstelveen; 18 April 2009. |
| Nomada alboguttata |
| Authority | : | Herrich-Schäffer, 1839 |
| Nederlands | : | Bleekvlekwespbij |
| Deutsch | : | Weißfleckige Wespenbiene |
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| Amstelveen; 18 April 2009. |
| Andrena spec. & Steatoda spec. |
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| Amsterdamse Waterleidingduinen; 19 April 2009. |
Male bee caught in web of spider. The bee ferociously defended itself, and scared the spider away. But this was a Pyrrhus victory, as the bee couldn't free itself from the web... |
| Pamphilius cf. vafer |
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| Amsterdamse Waterleidingduinen; 19 April 2009. Bottom left, male; others, female. Right, ovipositing female. |
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| Nomada alboguttata |
| Authority | : | Herrich-Schäffer, 1839 |
| Nederlands | : | Bleekvlekwespbij |
| Deutsch | : | Weißfleckige Wespenbiene |
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| Amstelveen; 21 April 2009. |
| Tenthredo campestris |
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| Amstelveen; 25 April 2009. Very lightly colored specimen. Notice completely yellow legs, rather unusual in this species. |
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| Tenthredo temula |
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| Amstelveen; 25 April 2009. | |
| Pamphilius cf. marginatus |
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| Amstelveen; 30 April 2009. |
| Pamphilius spec. |
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| Amstelveen; 25 April 2009. |
| Abia fasciata |
| Nederlands | : | kamperfoeliebladwesp |
| English | : | honeysuckle sawfly |
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| Amstelveen; 29 April 2009. |
| Dolerus germanicus |
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| Amstelveen; 29 April 2009. Female ovipositing at Equisetum arvense | |
| Craesus septentrionalis |
| Nederlands | : | elzebladwesp |
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| Amstelveen; 30 April 2009. |
| cf Pontania spec. |
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| Amstelveen; 1 May 2009. | |
| Eriocampa ovata |
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| Amstelveense Poel; 1 May 2009. |
| Arge cf. ciliaris |
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| Amstelveense Poel; 1 May 2009. | |
| Tenthredo atra |
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| Bloesembos (Amstelveen); 1 May 2009. | |
| Eutomostethus ephippium |
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| Bloesembos (Amstelveen); 1 May 2009. |
| Tenthredopsis spec. |
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| Amstelveen; 16 May 2009. | |
| Cephus pygmeus |
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| Amstelveen; 16 May 2009. | |
| Crabro peltarius |
| Authority | : | (Schreber, 1784) |
| Nederlands | : | Kleine zeefwesp |
| Deutsch | : | Kleine Siebwespe |
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| Amstelveen; 16 - 23 May 2009. Males. | |
| Trypoxylon spec. |
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| Amstelveen; 28 May 2009. |