Lasioglossum (Dialictus) admirandum (Sandhouse)

Gibbs, Jason, 2011, Revision of the metallic Lasioglossum (Dialictus) of eastern North America (Hymenoptera: Halictidae: Halictini), Zootaxa 3073, pp. 1-216: 39-40

publication ID

http://doi.org/ 10.5281/zenodo.1049595

publication LSID

lsid:zoobank.org:pub:B5AF6DF4-D3A7-4942-A94F-CC051D8074CF

persistent identifier

http://treatment.plazi.org/id/9A5987DB-A730-FF90-0A97-8D86FF0206C5

treatment provided by

Plazi

scientific name

Lasioglossum (Dialictus) admirandum (Sandhouse)
status

 

Lasioglossum (Dialictus) admirandum (Sandhouse)  

Halictus (Chloralictus) admirandus Sandhouse, 1924: 14   . Ƥ.

Holotype. Ƥ USA, Woods Hole, Massachusetts (E. Cattell), [ NMNH: 26405]. Examined. Dialictus perspicuus Knerer and Atwood, 1966 a: 883   . Ƥ 3.

Holotype. Ƥ CANADA, Ontario, Iona, Elgin Co., 15.ix. 1963 on Solidago, (G. Knerer)   ; [ ROM: 83647]. Examined.

Taxonomy. Michener, 1951: Lasioglossum (Chloralictus) admirandum   p. 1111 (catalogue); Mitchell, 1960: Dialictus admirandus   Ƥ, p. 377 (redescription); Krombein, 1967: Lasioglossum (Dialictus) admirandum   , p. 462 (catalogue); Hurd, 1979: Dialictus admirandus   , p. 1963, D. perspicuus   , p. 1970 (catalogue); Moure & Hurd, 1987: Dialictus admirandus   , p.

88, D. perspicuus   , p. 121 (catalogue); Gibbs, 2010 b: Lasioglossum (Dialictus) admirandum   Ƥ 3, p. 52 (redescription, key, synonymy).

Diagnosis. Female L. admirandum   can be recognised by the following diagnostic combination: head moderately elongate (length/width ratio = 0.95–1.01); clypeus with apicolateral margins convergent ( Fig. 21 View FIGURE 21 A); mesoscutum densely tessellate, punctures sparse between parapsidal lines (i= 1–3 d); tegula pale translucent brownish yellow; mesepisternum weakly rugulose; metapostnotal rugae not reaching posterior margin; T 1 acarinarial fan with dorsal opening; T 1 anterior declivitous portion polished due to lack of microsculpture; metasomal terga brown, distinctly punctate throughout; and T 3 –T 4 with abundant tomentum. They are most similar to L. paradmirandum   and L. sagax   . Female L. paradmirandum   have mesepisternum tessellate and T 1 declivitous portion distinctly coriarious. Female L. sagax   have apical half of T 2 nearly impunctate.

Male L. admirandum   are similar to females except with head elongate (length/width ratio = 1.01–1.04); clypeus with yellow distal band; face with abundant tomentum obscuring surface below; flagellomeres elongate (length/width ratio = 1.57–1.82), yellow ventrally; tibial apices and bases with extensive yellow; and apical impressed areas of metasomal terga impunctate. They are most similar to L. sagax   , which has mesoscutum relatively polished due to weak microsculpture.

Range. Ontario south to Georgia, west to Saskatchewan, Minnesota. USA: CT, IN, MA, MD, MI, MN, NY, WI. CANADA: ON, SK.

DNA Barcode. Available. Multiple sequences.

Comments. Uncommon. Gibbs (2010 b) reported a smaller range for L. admirandum   but additional material has since been identified from CUIC.

Most L. admirandum   have the head and mesosoma primarily green but some individuals have stronger blue reflections. The holotype of H. admirandus   belongs to the latter category whereas the holotype of D. perspicuus   is a green form.

NMNH

Smithsonian Institution, National Museum of Natural History

ROM

Royal Ontario Museum

DNA

Department of Natural Resources, Environment, The Arts and Sport

CUIC

Cornell University Insect Collection

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Hymenoptera

Family

Halictidae

Genus

Lasioglossum

Loc

Lasioglossum (Dialictus) admirandum (Sandhouse)

Gibbs, Jason 2011
2011
Loc

Halictus (Chloralictus) admirandus

Sandhouse 1924: 14
1924