Wall with limestone mortar Habitat (Wandlebury NR)

This wall is a great habitat, the limestone mortar is a soft material and is often dug out by some types of bee as you can see by the holes in the photo. Red and blue mason bees would nest here along with other bees and wasps.

I saw Blue mason bees , a queen hornet looking for a nesting site , the Pompilidae type of wasp looking and catching its prey and a Sapyga-quinquepunctata wasp which uses Mason bees as their host.

 

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Trichrysis cyanea – Wandlebury NR

Description
About 9mm long and a rather iridescent sea green in colour.
Habitat
Associated with open habitats with aerial nesting sites of its hosts such as wooden fence and gate posts, dead trees, logs and tree stumps, and holes in mud and cob walls.
When to see it
Recorded from May until September but mainly during June and July. There are a very few records from April and October. The males and females have the same flight period.
Life History
Several umbellifers are amongst the flowers it visits. It is a cuckoo wasp and its hosts include wasps of the Trypoxylon family.
UK Status
This species shows a widespread distribution in southern Britain up as far as Yorkshire with isolated records from further north… Naturespot

Orchid Beetle (Dascillus cervinus) Wandlebury

A medium-sized (9-12mm), dull brown or greyish beetle of rather nondescript appearance. The whole body is covered by dense pubescence.

D. cervinus is widespread but rather localised and with a patchy distribution with records most frequent in North Wales, the Lake District, East Anglian Brecks, North Downs and Salisbury Plain. It seems to favour downland and upland areas, often where orchids are present (hence the common name), though the soil-dwelling larvae apparently fed mainly on grass roots.

Raspberry Beetle – Byturus tomentosus (Wandlebury)

Description
Length: 3.2 to 4 mm. This small beetle has a chestnut-red or golden appearance, with legs and antennae all of similar colour.
Similar Species
Byturus tormentosus and B. ochraceous are very similar but can be distinguished by careful viewing.
B. tormentosus is slightly smaller (up to 4mm) and has elytra that taper outwards slightly towards the base. It is also lighter brown. Ochraceous is a little larger (up to 5mm), a shade darker, with larger eyes and elytrathat are generally parallel-sided. The pronotal margins are also different: tormentosus has a narrow margin visible along most of the base whereas the margin in ochraceous is obscured by the central bulge of the pronotum.
Habitat
Though the beetle larvae are pests for Raspberry growers, adults can be found feeding on pollen on a variety of wildflowers. The small adults often congregate within flowers, particularly composites such as Dandelion.
When to see it
May to July.
Life History
It lays its eggs on the flowers of Raspberries, Blackberries and Loganberries. When the larvae hatch they eat the developing fruit.

E. rubicola (Wandlebury NR)

This is a partial ID ,without side shots or a sample this can not be confirmed but is most likely.

One of the smaller Ectemnius species, resembling a small E. continuus, but much less frequent.

Widely recorded in southern England as far north as Northamptonshire and west to Dorset and Somerset. There are several records for the south coast of Wales, but the wasp is unknown from the south-west of England.

Status (in Britain only)
Generally scarce and infrequent. This species is probably not threatened and appears to have increased slightly in frequency during recent decades.

Habitat
Recorded from a variety of habitats including coastal and urban areas. Perhaps most frequent in rough grassland, tall herbs and open scrub.

Flight period
Univoltine; May to September, with most records between June and August.

Prey collected
Prey consists of flies including syrphids, muscids, lauxaniids, tephritids and acrocerids (Lomholdt, 1975-76).

Nesting biology
This is the only member of the genus which regularly nests in hollow plant stems as opposed to dead wood. Records include the stems of thistles, bramble and common reed. Up to 17 cells are placed successively in the stem, using material such as plant fragments to create partitions. E. rubicola has been reported sharing stems with other wasps such as Trypoxylon species and Ancistrocerus trifasciatus (Lomholdt, 1975-76).

Flowers visited
Umbellifers such as wild carrot, hogweed, wild parsnip and hedge-parsley…. BWARS

Colletes daviesanus (Wandlebury NR)

Distribution
Widely distributed throughout England, Wales and the Channel Islands, but scarce in Scotland, where it is known only from scattered coastal sites as far north as Invernesshire. Published records from the Outer and Inner Hebrides (Heslop Harrison, 1952) are almost certainly misidentifications of Colletes floralis. It is also scarce in Ireland, with records from Kilkenny, Wexford and Down. Widely distributed in Europe, occurring from Fennoscandia south to Austria and northern Italy, and east to Iran. Also reported from Mongolia and the Gobi.

Status (in Britain only)
This species is not regarded as being scarce or threatened.

Habitat
Virtually ubiquitous in lowland Britain and it is the only Colletes regularly observed in urban localities, including private gardens.

Flight period
Univoltine; mid June to mid September.

Pollen collected
Surprisingly there are no records for the British Isles but it is almost certainly oligolectic on Asteraceae, as in Germany (Westrich, 1989).

Nesting biology
Most commonly nests in dense aggregations in sunlit, vertical surfaces such as coastal sandstone cliffs, sand pits, roadside cuttings, cob walls and in soft mortar joints of brickwork. The bee has gained some notoriety in undermining mortar joints, in extreme examples leading to serious weakening of masonry, with piles of excavated sand collecting at the bases of affected walls…. BWARS