Sighting

Karen Retra 31 Aug 2015

Leioproctus sp? Corrected to Lasioglossum Chilalictus lanarium.

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Sighted 23 Aug 2015
363 Amatex Street, East Albury NSW 2640, Australia

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Identifications

  • Ken Walker 31 August 2015
    Lasioglossum Chilalictus lanarium
    (species)
    Taxonomy: Animalia: Arthropoda: Insecta: Hymenoptera: Halictidae: Lasioglossum Chilalictus: lanarium
    Common Names: Bees, Halictids, halictid bees
    Ken Walker says

    Hi Karen -- Several characters do not make this a Colletidae (ie Leioproctus). The most obvious in your image is the mouthparts. Halictidae have a short, dagger shaped glossa (tongue) but the glossa is attached to an elongate set of other mouthparts called the prementum. This elongate prementum is like a jointed arm that allows the bee to poke its short glossa into all sorts of deep places to collect nectar. You can clearly see the brown, prementum protruding from underneath the bee's head. Colletidae has a blunt, bilobed glossa and has a short prementum which you never see. They are restricted to flowers with a broad shallow cup flower rather than anything with a tubular floral corolla. The other differentiating character seen in your image is the hair on the hind tibia. In your image, you can actually see the hind tibia with hair above and below. This is because the primary pollen carrying area for Halictidae is the femur rather than the tibiae. The primary pollen carrying area on Leioproctus is the hind tibia and it is so covered with hair that you never see the tibia itself. The other character, not seen in your image, is the wing venation. Halictids have a strongly curved (termed arctuate) M vein. It is easily seen as a curved vein in the middle of the forewing, Veins in the forewings of Leioproctus are almost straight. Nice to see this bee out an about. The first of this species I have seen this spring (well almost spring!). Ken

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Notes

  • Karen Retra 31 August 2015
    Tagged With thanks heaps ken
    Karen Retra says

    Much appreciate the correction and details! Not only do my photo skills need brushing up after winter, so too my ID skills! I was torn (as usual!) at Lasioglossum vs Leioproctus, and did try reading up but clearly mucked up on the application. Interesting to know it's early from your perspective too.

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  • Karen Retra 31 August 2015
    Karen Retra says

    Tricky to see hair on the hind legs for all the pollen! A guess based partly on previous sightings. Any confirmation or correction as to ID would be welcome! Thanks.

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