Bee collection

Workbook
Although bees fall outside my main taxonomic area of interest, they are nearby. Indeed, some crabronids are more closely related to bees than they are to other crabronids. That’s my excuse for taking time out to look more closely at the variety of bees turning up in the Malaise traps this year.
This is not a comprehensive or in depth study. I’ve simply taken a set of images of select bees from the collection before sending them off to Canada for barcoding (see information here).
Specimen #002 – Callomelitta picta
(COLLETIDAE: Callomelittinae)
Identification based on description by Houston (p. 99-100, 2018).
https://inaturalist.ala.org.au/observations/351921183
Colour: mesoscutum & scutellum orange/red; metanotum & propodeum black; head & metasoma dark metallic-blue; wings heavily infuscated brown
Forewing venation: 3 submarginal cells; stigma well-developed; apex of marginal cell on wing margin
Strong sculpturing on head and thorax
Colour: pronotum black; mesopleura orange/red
Scopae on hind legs (femora & tibia)
Facial fovea: linear
Mandibles broad, multidentate
Mandibles tridentate (arrows)
Propodeum enclosure not delineated laterally, except by shallow sulci. Remainder of dorsal propodeum gently rounded, dropping off abruptly at sides.
Propodeum enclosure not delineated laterally, except by shallow sulci. Remainder of dorsal propodeum gently rounded, dropping off abruptly at sides. The interface between dorsal and lateral surfaces might be considered a carina, or at least a ridge.
Pygidial plate: slender, parallel-sided.
Female (note 10 flagellomeres)
Specimen #012 – Euryglossina
(COLLETIDAE: Euryglossinae)
Identification based on genus diagnosis in Houston (pp 128-30, 2018).
https://inaturalist.ala.org.au/observations/352163705
Size ~ 4mm
TI with long, median groove
Scopae: absent
Size ~ 4mm
Scopae: absent
Forewing: first recurrent vein basal to first submarginal cross-vein; marginal cell terminating acutely on anterior margin of wing
Head shape: quadrate
Eye shape: extends beyond anterior articulation of mandible
Clypeus: appears recessed, relative to supraclypeal region (not forming continuous arc)
Clypeus: appears recessed, relative to supraclypeal region (not forming continuous arc)
Hind femur and tibia (viewed anteriorly): basitibial plate edged by small tubercles
Hind tibia (viewed dorsally): basitabial plate not clearly defined
Specimen #022 – Lasioglossum peraustrale
(HALICTIDAE; Halictinae; subgenus Australictus)
Identification based on species description in Houston (p181, 2018).
https://inaturalist.ala.org.au/observations/352460207
Tomentum: orange basal bands on T2 & T3; orange patches on mesoscutum, posterolaterally,and metanotum, medially
Forewing: 3 submarginal cells, SCIII much shorter than SCI, SCIII longer than SCII; basal vein strongly curved; first recurrent vein interstitial SCII & SCIII; marginal cell apex acute, situated on wing vein
Tomentum: orange basal bands on T2 & T3; orange patches on mesoscutum, posterolaterally,and metanotum, medially
Tomentum: orange patches on pronotal collar, laterally; white fringe on pronotal lobes
Scopae: well-developed on hind femur; shorter, less dense on hind tibia
Proboscis tip, viewed dorsally. Galea closely associated (‘applied’) to stipes.
Proboscis, showing relative length of cardo and prementum.
Proboscis: long prementum; short, acute glossa; 6-segmented maxillary palp
Proboscis, viewed ventrally, showing prementum and labial palps, flanked laterally by stipes.
Proboscis tip, viewed ventrally. Note that the glossa is curved upwards and so not visible in this image.
Front basitarsus: short, dense bristles (compare images p. 107 Houston 2018)
Base of hind tibia, viewed dorsally
Base of hind tibia, viewed dorsally
Hind basitarsus
Apex of metasoma, viewed dorsally.
Apex of hind basitarsus, viewed anteriorly: penicillus present
T5: with hair fringe divided medially by a nearly hairless strip
T6: pygidial plate present
Specimen #026 – Leioproctus carinatus
(COLLETIDAE: Colletinae: tribe Paracolletini)
Following a suggestion from the iNaturalist community, L. carinatus looks a strong candidate ID (Maynard 2013).
Quite different to L. plumosus (one of my initial candidates), as the scopae are black, whereas those of L. plumosus are extensively pale (see images OZCAM (from QVMAG) and PaDIL). https://inaturalist.ala.org.au/observations/353150745
Size: 11-12mm, robust.
Body colour: dark metallic blue-green throughout.
Body colour: dark metallic blue-green throughout.
Long hairs over most of head, mesosoma, and legs.
Long hairs over most of head, mesosoma, and legs.
Long hairs over most of head, including genae
Forewing: 3 submarginal cells; stigma well-developed, tapering apically to marginal cell vein well inside marginal cell (see p. 105, Houston 2018)
Forewing: 3 submarginal cells; stigma well-developed, tapering apically to marginal cell vein well inside marginal cell (see p. 105, Houston 2018)
Female (note 10 flagellar segments)
Mandibles long. Labrum with transverse ridges.
Hind tibia (and base of basitarsus), viewed anteriorly
Hind tibia (viewed posteriorly): scopae long, particularly dense above (dorsally); hairs beneath include mixture, with some particularly long, and obviously plumose.
Pygidial plate: present
tibial spur of left hind leg (posterior view)
scutellum and dorsal enclosure of propodeum
propodeum, posteroventral view showing both dorsal surface (with enclosure) posterior face
Specimen #023 – Callomelitta antipodes
(COLLETIDAE: Callomelittinae)
Identification based on description and images Houston (pp. 99-100, 2018).
https://inaturalist.ala.org.au/observations/347402402
Head and thorax strongly sculptured.
Antennae: long; 11 flagellomeres (male)
Head and thorax strongly sculptured.
Compare antennae and head shape with image e Houston (2018), page 101.
Forewing: 3 submarginal cells; basal vein not strongly arched; stigma well developed; apex of marginal cell on wing margin; strongly tinted brown, veins nearly black
Mid tibia (anterior view)
Front tibia and tarsus (anterior view)
Specimen #017 – Callohesma (flavopicta ?)
(COLLETIDAE: Euryglossinae)
While it seems a good match for Callohesma flavopicta, based on description in Exley 1974, I have left it at genus for now. Exley noted that the taxon may be differentiated into several species in the future, and indeed the specimens on BOLD fall out into four distinct BINs.
https://inaturalist.ala.org.au/observations/347676840
Scopae: absent
TI with long median groove.
Forewing: 2 submarginal cells; SCII about half as long as SCI; basal angle of SCI distinctly less than 90º; posterior vein of SCI sinuate; first recurrent vein joining SCII
Facial marking consistent with Exley 1974, Figs. 9J-K
Antenna with 10 flagellomeres (female)
Pygidial plate: present
Specimen #029 - Trichocolletes orientalis
(COLLETIDAE: Neopasiphaeinae)
This species is widespread in the southeast of Australia, from Brisbane area south to Victora and Adelaide. It has been collected from Nadgee Nature Reserve … so we know it occurs here. The authors (Batley & Houston 2012) note that it is commonly misidentified in collections as T. venustus. Males can be distinguished from sympatric species such as T. venustus, T. aeratus, T. fuscus, and T. tenuiculus by features including scape and leg colour, width of metasomal bands, plume on front basitarsus.
The annotations below draw from the key and species descriptions by Batley & Houston (2012).
Body length: 12mm. Note that the holotype male of Trichocolletes orientalis: 10.7mm
May be distinguished from sympatric males of T. venustus by “the extensive areas of dark brown on mid tibia” (it is clear orange-brown in T. venustus).
Description male holotype T. orientalis includes:
“femora and trochanters with much long pale hair”
“tarsi, tibiae and distal ends of femora orange-brown, fore and mid tibiae medially suffused with dark brown”
Forewing venation typical of Trichocolletes, with: “three submarginal cells; pterostigma short, parallel-sided; ending at, or slightly beyond, base of vein r.” (Batley & Houston 2012)
Key step 13: Metasoma with narrow silver or pale gold integumental bands –> Step 14
May be distinguished from sympatric males of T. fuscus by width of metasomal bands (they are gold and “not narrow” in T. fuscus).
Description male holotype T. orientalis includes:
“T1–5 with bands usually narrow, silver, sometimes of moderate width and occasionally gold”
Key step 1: Eyes hairy (cf ‘with minute setae only’) –> 2
Key step 2: Scape mostly orange-brown, occasionally dark brown (cf ‘scape mostly black’) –> 3
Key step 15: Scape clear orange brown (cf ‘with brown suffusions’) –> T. orientalis
May be distinguished from sympatric males of T. tenuiculus by scape colour (is has brown infusions in T. tenuiculus).
Description male holotype T. orientalis includes:
“Face densely and scutum closely covered with long, finely-branched, bright orange hair.”
Key step 1: Eyes hairy (not ‘with minute setae only’) –> 2
Key step 9: Gena with open to close hair (cf ‘Gena with dense white hair’) –> 12
Key step 15: Scape clear orange brown (cf ‘with brown suffusions’) –> T. orientalis
Key step 15: Fore basitarsal plume long, distinct (not short, weak) –> T. orientalis.
May be distinguished from sympatric males of T. aeratus by the presence of the plume (there is no such plume in T. aeratus), and from T. tenuiculus by the length and strength of the plume hairs (they are short and weak in T. tenuiculus).
Description male holotype T. orientalis includes:
“Fore basitarsus with tapered plume of golden hair”
Front leg, showing plume of basitarsus as viewed anteriorly
Mid tibia medially suffused with dark brown.
May be distinguished from sympatric males of T. venustus by “the extensive areas of dark brown on mid tibia” (it is clear orange-brown in T. venustus).
hind femora without the dense, long hair characteristic of T. capillosus
hind tibia, without the long fringe of hair characteristic of T. venustus
Apex of metasoma, showing T4-T7
Note 11 flagellomeres = male
Mouthparts, showing the proboscis characteristic of Colletidae, with its mop-like glossa
References
Abbott, P. 2022. Native Bees of the ACT and NSW South Coast. Published by Peter Abbott
Batley, M, and Houston, T.F. 2012. Revision of the Australian bee genus Trichocolletes Cockerell (Hymenoptera: Colletidae: Paracolletini). Records of the Australian Museum 64(1): 1–50. http://dx.doi.org/10.3853/j.0067-1975.64.2012.1589
Exley, E.M. 1974. Revision of the subgenus Callohesma Michener (Apoidea : Colletidae). Australian Journal of Zoology, Supplementary Series 26. pp. 1-58
Houston, T. 2018. A Guide to Native Bees of Australia. CSIRO Publishing, Clayton South, Vic.
This is a workbook page … a part of our website where we record the observations and references used in making species identifications. The notes will not necessarily be complete. They are a record for our own use, but we are happy to share this information with others.