Revision of the metallic Lasioglossum (Dialictus) of eastern North America (Hymenoptera: Halictidae: Halictini)
Author
Gibbs, Jason
text
Zootaxa
2011
2011-10-28
3073
1
216
journal article
31531
10.5281/zenodo.1049595
1a985cc7-af57-45e9-a988-c3beda3c15b4
1175-5326
1049595
B5AF6DF4-D3A7-4942-A94F-CC051D8074CF
Lasioglossum
(
Dialictus
)
bruneri
(Crawford)
Halictus Bruneri
Crawford, 1902a
: 237
. Ƥ.
Holotype
.
Ƥ
USA
, Nebraska, West Point,
10.vi.1901
(J.C. Crawford); [
NMNH
: 8231]. Examined.
Halictus brimleyi
Crawford, 1932
: 71
. Ƥ.
Holotype
. Ƥ
USA
, North
Carolina, Bryson City
,
24.v.1923
on
Ilex opaca
(J.C. Crawford)
; [
NMNH
: 40306]. Examined.
Taxonomy.
Michener, 1951
:
Lasioglossum
(
Chloralictus
)
bruneri
, p. 1112 (catalogue, synonymy);
Mitchell, 1960
:
Dialictus bruneri
Ƥ3, p. 384 (redescription);
Krombein, 1967
:
Lasioglossum
(
Dialictus
)
bruneri
, p. 462 (catalogue);
Hurd, 1979
:
Dialictus bruneri
, p. 1964 (catalogue);
Moure & Hurd, 1987
:
Dialictus bruneri
, p. 92 (catalogue);
Gibbs, 2010b
:
Lasioglossum
(
Dialictus
)
bruneri
Ƥ3, p. 76 (redescription, key).
FIGURE 74.
Distribution map of
Lasioglossum batya
(stars),
L
.
ceanothi
(circles) and
L
.
cephalotes
(squares).
Diagnosis.
Female
L
.
bruneri
can be recognised by the diagnostic character of hypostomal carinae widely divergent (
Fig. 11
B) and strongly produced distally. They may be further distinguished by the following: size large, head and mesosoma coarsely sculptured, and protrochanter excavated anteriorly. They are very similar to
L
.
reticulatum
, which has less widely divergent hypostomal carinae, which are not produced distally, and normal trochanters without anterior excavation.
Male
L
.
bruneri
can be recognised by the following diagnostic combination: mesoscutum rugose anteriorly, mesepisternum coarsely rugose, and tibiae and femora brown. They are most similar to
L
.
reticulatum
, which has the tibiae and femoral apices and bases reddish brown.
Male
L
.
cressonii
are also similar but have distinct mesoscutal punctures anteriorly and less clypeal pubescence, not obscuring the surface.
Range.
Ontario south to Florida, west to Nebraska.
USA
: GA,
IL
, IN, KS, MA, MD, MI, NC, NE, NM, NY, SC, TN, TX, VA, WI, WV.
CANADA
: ON.
DNA Barcode.
Available. Multiple sequences.
Comments.
Common.
Some females of
L
.
bruneri
, particularly in the Midwest, do not have strongly produced hypostomal carinae. These have sometimes been mistaken for
L
.
reticulatum
.