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Identification Summary: Small; squared-off clypeus; southern coastal plain in distribution; hind tarsi and basitarsi lemon to orange with a large brown section in the middle of the tarsi; pitting quite fine on scutum; very few appressed hairs on the abdomen.
Reprinted with permission from: Mitchell, T.B. 1960 Bees of the Eastern United States. North Carolina Agricultural Experiment Station Technical Bulletin No. 141.
FEMALE�Length 5 mm.; head and thorax bluish-green, abdomen more piceous, the more basal segments of the legs dark; pubescence short, thin, entirely pale; head slightly broader than long; clypeus projecting about one- half below suborbital line; supraclypeal area nearly as long as clypeus; eyes convergent below; lateral ocelli only slightly nearer eyes than to each other; cheeks very slightly broader than eyes; punctures of upper part of face rather fine but deep and distinct, quite close, but with definite, intervening spaces evident, becoming quite sparse toward and below antennae, supraclypeal area with minute and quite sparse punctures, those on clypeus, above, minute and sparse, becoming quite coarse but even more widely separated toward apical margin; vertex somewhat shining, punctures minute and obscure, cheeks quite smooth, more or less shining, obscurely and rather closely punctured above; hypostomal carinae parallel, apical angle rather narrowly rounded; scutum smooth but rather dull, punctures very fine, quite sparse medially, becoming rather close but distinctly separated between notaulices and tegulae (much as in weemsi, fig. 99), those on scutellum minute and close along anterior margin, becoming more sparse, but deep and distinct posteriorly; pleura quite smooth, somewhat shining, without distinct punctures; dorsal area of propodeum with rather coarse, widely separated striations on each side, median area with a single median striation, otherwise rather smooth, hind margin rounded, lateral faces quite smooth and somewhat shining; wings subhyaline, veins and stigma pale testaceous, 2nd submarginal cell nearly equal to 3rd, receiving 1st recurrent vein nearly at tip; tegulae yellowish-hyaline; legs dark basally, tibiae testaceous at base and apex, tarsi largely testaceous; abdominal terga smooth, somewhat shining, punctures of basal tergum extremely minute, hardly visible even with high magnification, those on tergum 2 somewhat more distinct but still very obscure, apical impressed areas rather broad, becoming yellowish along rims, largely impunctate, discal pubescence very short and thin, entirely pale, apical segments fully exposed.
TYPES�Holotype: Female, Levy Co., Fla., Sept. 13, 1955 (R. A. Morse, on Polygonum hydropiperoides) [Fla. Plant Board]. Paratypes: FLORIDA: 9 females, topotypical; 1femlae, Silver Springs, Apr. 5, 1953
(K. V. Krombein). GEORGIA: 1 female, Pine Park, Mar. 17, 1939 (P. W. Fattig). NORTH CAROLINA: 1 female, Highlands, July 23, 1955 (Mitchell, on Zizia).
Paratypes are in collections of the Florida Plant Board, the U. S. National Museum, and the author.
Extracted from Jason Gibbs. 2011. Revision of the metallic Lasioglossum (Dialictus) of eastern North America (Hymenoptera: Halictidae: Halictini.) Zootaxa.
Lasioglossum (Dialictus) leviense (Mitchell)
Dialictus leviensis Mitchell, 1960: 403. ♀.
Holotype. ♀ USA, Florida, Levy Co., 13.ix.1955, on Polygonum hydropiperoides, (R.A. Morse); [FSCA]
Taxonomy. Krombein, 1967: Lasioglossum (Dialictus) leviense, p. 464 (catalogue); Hurd, 1979: Dialictus leviensis, p.
1968 (catalogue); Moure and Hurd, 1987: Dialictus leviensis, p. 110 (catalogue).
Diagnosis. Female L. leviense can be recognised by the shape of the clypeus, which has the distal margin beyond the
preapical fimbriae extending laterally making it noticeably wider than the preapical margin (Figs. 21B, 145B). The distal
portion of the clypeus has a rectangular appearance as a result. They may be further distinguished by the following
combination: head round (length/width ratio = 0.95�0.97); mesoscutum weakly tessellate, punctures moderately dense
between parapsidal lines (i=1�2d) (Fig. 146); mesepisternum rugulose; tegula pale; tibiae with extensive brownish
yellow; and T1 acarinarial fan with dorsal opening (Fig. 146). They are most similar to L. mitchelli and L. weemsi, both of
which have a similarly shaped clypeus. Female L. mitchelli do not have a dorsal opening on the T1 acarinarial fan.
Female L. weemsi have less pale colouration on the legs and slightly wider heads (length/width ratio = 0.93�0.96).
Male L. leviense can be recognised by the combination of clypeus with distal margin yellow; mesoscutum imbricate,
punctation sparse between parapsidal lines (i=1�2.5d) (Fig. 148); mesepisternum finely rugulose-imbricate; tegula pale
yellow; tibiae with yellow on anteroventral surface; metasomal terga without tomentum, apical impressed areas impunctate;
and S4�S5 with apicolateral hairs. They are most similar to L. apopkense which are larger, more coarsely rugulose
on mesepisternum, and tibiae more extensively brownish yellow.
Redescription. FEMALE. Length 3.81�4.54 mm; head length 1.22�1.39 mm; head width 1.28�1.44 mm; forewing
length 3.09�3.33 mm.
Colouration. Head and mesosoma green with faint bluish reflections to mostly blue. Clypeus with apical half blackish
brown. Antenna dark brown, flagellum with ventral surface brownish yellow. Tegula amber to pale yellow. Wing
membrane subhyaline, venation and pterostigma pale brownish yellow. Legs brown, except tibiae basally and apically,
protibial anterior surface, metatibial dorsal surface, and tarsi amber to brownish yellow. Metasoma dark brown, terga and
sterna with apical margins translucent brownish yellow.
Pubescence. Dull white. Moderately sparse. Head and mesosoma with moderately sparse woolly hairs (1�2 OD),
longest on genal beard, metanotum, and mesopleuron (2�2.5 OD). Paraocular area with moderately sparse tomentum,
partially obscuring surface. Gena with sparse tomentum. Propodeum with moderately dense plumose hairs on lateral and
posterior surfaces (2�2.5 OD). Metasomal terga with moderately sparse, fine hairs. T1 acarinarial fan with wide dorsal
opening. T2�T3 basolaterally and T4 entirely with sparse tomentum. T2 apicolateral and T3�T4 apical margins with
sparse fringes.
Surface sculpture. Face imbricate, punctation fine. Clypeus with apical half polished, punctation sparse (i=1�3d).
Supraclypeal area with punctation moderately sparse (i=1�2.5d). Lower paraocular area punctation dense (i≤d). Antennocular
area punctation moderately dense (i=1�1.5d). Upper paraocular area and frons punctate-reticulate. Ocellocular
area obscurely punctate (i≤d). Gena lineolate. Postgena imbricate. Mesoscutum weakly tessellate, punctation moderately
dense between parapsidal lines (i=1�2d), dense laterad of parapsidal line (i≤d), contiguous on anterolateral portion.
Mesoscutellum similar to mesoscutum, submedial punctation sparse (i=2�5d). Axilla minutely punctate. Metanotum imbricate. Pre�pisternum rugulose. Hypoepimeral area imbricate. Mesepisternum dorsal half rugulose, ventral half
ruguloso-imbricate, shiny. Metepisternum with dorsal third carinulate and ventral portion imbricate. Metapostnotum
incompletely carinulate, posterior margin imbricate. Propodeum with dorsolateral slope and lateral surface
imbricate, posterior surface tessellate. Metasomal terga polished, weakly coriarious on apical impressed areas,
punctation distinct on basal half (i=1�1.5d), apical impressed areas with very obscure punctures.
Structure. Head very wide (length/width ratio = 0.95�0.97). Eyes convergent below (UOD/LOD ratio = 1.22�
1.28). Clypeus � below suborbital tangent, apicolateral angle subparallel. Antennal sockets close (IAD/OAD <
0.5). Frontal line carinate, ending 2�2.5 OD below median ocellus. Gena narrower than eye. Inner metatibial spur
pectinate with 3�4 branches. Metapostnotum moderately truncate (MMR ratio = 1.25�1.42), posterior margin
rounded onto posterior surface. Propodeum with oblique carina absent, lateral carina not reaching dorsal margin.
MALE. Similar to female except for the usual secondary sexual characters and as follows. Length 3.13�3.63
mm; head length 1.16�1.19 mm; head width 1.18�1.23 mm; forewing length 2.81�3.09 mm.
Colouration. Labrum, mandible, and distal margin of clypeus brownish yellow. Flagellum with ventral surface
brownish yellow. Tegula pale yellow. Legs brown, except tarsi and anteroventral portion of tibiae pale brownish
yellow.
Pubescence. Face below eye emargination with moderately dense tomentum partially obscuring surface,
denser on lower paraocular area. Metasomal sterna sparsely pubescent, S4�S5 with apicolateral tufts (1.5 OD).
Surface sculpture. Mesoscutum imbricate, punctation sparse between parapsidal lines (i=1�2.5d) and dense
laterad of parapsidal line (i≤1d). Metapostnotum with longitudinal carinae, reaching posterior margin. Propodeal
dorsolateral slope rugose. T2 apical impressed area impunctate.
Structure. Head wide (length/width ratio = 0.97�0.99). Eyes strongly convergent below (UOD/LOD ratio =
1.67�1.72). Clypeus 2/3 below suborbital tangent, apicolateral margins weakly convergent. Antennal sockets distant
(IAD/OAD > 1.5). Frontal line carinate, ending 1.5 OD below median ocellus. Pedicel shorter than F1. F2 length 1.7�1.8X F1. F2�F10 elongate (length/width ratio = 1.56�1.60). Metapostnotum moderately elongate (MMR ratio = 1.15�1.17), posterior margin sharply angled onto posterior propodeal surface.
Terminalia. Not examined.
Range. South-eastern USA. (Fig. 149). USA: FL, GA, MS.
Additional material examined. USA: FLORIDA: 33♀♀3♂♂ Leon Co., Apalachicola National Forest, "ant
heaven", N30.31687 W084.50008, 20�27.vi.2005 (Ronquist Lab); 6♀♀ Leon Co., Apalachicola National Forest, "ant
heaven", N30.31687 W084.50008, 5�11.vii.2005 (Ronquist Lab), 23♀♀ Leon Co., Apalachicola National Forest, "ant
heaven", N30.31687 W084.50008, 11�18.vii.2005 (Ronquist Lab); [AMNH]; 3♀♀ paratypes Levy Co., 13.ix.1955
(R.A. Morse); [CUIC]; 2♀♀ paratypes Levy Co., 13.ix.1955 (R.A. Morse); [NCSU]; 1♀ paratype Silver Springs,
5.iv.1953 (K.V. Krombein); [NMNH]; 2♀♀ Wakulla Co., Apalachicola N.F., FS 366, N30�19.751′ W084�30.309′, 8�
15.v.2005 (Ronquist lab); 2 ♀♀ Wakulla Co., Apalachicola N.F., FS 366, N30�19.751′ W084�30.309′, 5�13.vi.2005
(Ronquist lab); 1♀ Wakulla Co., Apalachicola N.F., FS 366, N30�19.751′ W084�30.309′, 13�20.vi.2005 (Ronquist lab);
9♀♀ Wakulla Co., Apalachicola N.F., FS 366, N30�19.751′ W084�30.309′, 5�11.vii.2005 (Ronquist lab); 1♀ Wakulla
Co., Apalachicola N.F., FS Rd. 390, N30�21.696′ W084�40.399′, 11�18.vii.2005 (Ronquist lab); 1♀ Wakulla Co., Apalachicola
N.F., Post Office Bay, N30�3.565′ W084�59.051′, 13�20.vi.2005 (Ronquist lab); 1♀ Wakulla Co., Apalachicola
N.F., Post Office Bay, N30�3.565′ W084�59.051′, 27.vi�5.vii.2005 (A. Vanderby); [PCYU]; 12♀♀ Taylor Co., Rt 98 &
Ecolina Riv., 1.iv.1993 (S.M. Fullerton); [UCFC]; GEORGIA: 1♀ paratype Pine Park, 17.iii.1939 (P.W. Fattig);
[NCSU]; MISSISSIPPI: 1♀ Hattiesburg, 2.vii.1944 (C.D. Michener); [AMNH]; 3♀♀ Jackson Co., N30.3957
W088.7939, 4�5.vi.2005 (S.W. Droege); [PCYU].
Floral records. APIACEAE: Zizia; POLYGONACEAE: Polygonum hydropiperoides.
DNA Barcode. Available. Multiple sequences. DNA barcodes of L. leviense show little to no difference from L.
mitchelli.
Comments. Uncommon.
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