Lasioglossum (Dialictus) leviense (Mitchell)

Gibbs, Jason, 2011, Revision of the metallic Lasioglossum (Dialictus) of eastern North America (Hymenoptera: Halictidae: Halictini), Zootaxa 3073, pp. 1-216: 131-135

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-A794-FF31-0A97-8DD6FE0702E5

treatment provided by

Plazi

scientific name

Lasioglossum (Dialictus) leviense (Mitchell)
status

 

Lasioglossum (Dialictus) leviense (Mitchell)  

( Figures 145–148 View FIGURE 145 View FIGURE 146 View FIGURE 147 View FIGURE 148 )

Dialictus leviensis Mitchell, 1960: 403   . Ƥ.

Holotype. Ƥ 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. 21 View FIGURE 21 B, 145 B). 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= 1–2 d) ( Fig. 146 View FIGURE 146 ); mesepisternum rugulose; tegula pale; tibiae with extensive brownish yellow; and T 1 acarinarial fan with dorsal opening ( Fig. 146 View FIGURE 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 T 1 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= 1–2.5 d) ( Fig. 148 View FIGURE 148 ); mesepisternum finely rugulose-imbricate; tegula pale yellow; tibiae with yellow on anteroventral surface; metasomal terga without tomentum, apical impressed areas impunctate; and S 4 –S 5 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. T 1 acarinarial fan with wide dorsal opening. T 2 –T 3 basolaterally and T 4 entirely with sparse tomentum. T 2 apicolateral and T 3 –T 4 apical margins with sparse fringes.

Surface sculpture. Face imbricate, punctation fine. Clypeus with apical half polished, punctation sparse (i= 1–3 d). Supraclypeal area with punctation moderately sparse (i= 1–2.5 d). Lower paraocular area punctation dense (i≤d). Antennocular area punctation moderately dense (i= 1–1.5 d). 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= 1–2 d), dense laterad of parapsidal line (i≤d), contiguous on anterolateral portion. Mesoscutellum similar to mesoscutum, submedial punctation sparse (i= 2–5 d). Axilla minutely punctate. Metanotum imbricate. Preëpisternum 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= 1–1.5 d), 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 ½ 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, S 4 –S 5 with apicolateral tufts (1.5 OD).

Surface sculpture. Mesoscutum imbricate, punctation sparse between parapsidal lines (i= 1–2.5 d) and dense laterad of parapsidal line (i≤ 1 d). Metapostnotum with longitudinal carinae, reaching posterior margin. Propodeal dorsolateral slope rugose. T 2 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 F 1. F 2 length 1.7–1.8 X F 1. F 2 –F 10 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 View FIGURE 149 ). USA: FL, GA, MS.

Additional material examined. USA: FLORIDA: 33 ƤƤ 333 Leon Co., Apalachicola National Forest, "ant heaven", N 30.31687 W084.50008, 20–27.vi. 2005 (Ronquist Lab); 6 ƤƤ Leon Co., Apalachicola National Forest, "ant heaven", N 30.31687 W084.50008, 5–11.vii. 2005 (Ronquist Lab), 23 ƤƤ Leon Co., Apalachicola National Forest, "ant heaven", N 30.31687 W084.50008, 11–18.vii. 2005 (Ronquist Lab); [ AMNH]; 3 ƤƤ paratypes Levy Co., 13.ix. 1955 (R.A. Morse); [ CUIC]; 2 ƤƤ paratypes Levy Co., 13.ix. 1955 (R.A. Morse); [ NCSU]; 1 Ƥ paratype Silver Springs, 5.iv. 1953 (K.V. Krombein); [ NMNH]; 2 ƤƤ Wakulla Co., Apalachicola N.F., FS 366, N 30 ˚ 19.751 ʹ W084˚ 30.309 ʹ, 8– 15.v. 2005 (Ronquist lab); 2 ƤƤ Wakulla Co., Apalachicola N.F., FS 366, N 30 ˚ 19.751 ʹ W084˚ 30.309 ʹ, 5–13.vi. 2005 (Ronquist lab); 1 Ƥ Wakulla Co., Apalachicola N.F., FS 366, N 30 ˚ 19.751 ʹ W084˚ 30.309 ʹ, 13–20.vi. 2005 (Ronquist lab); 9 ƤƤ Wakulla Co., Apalachicola N.F., FS 366, N 30 ˚ 19.751 ʹ W084˚ 30.309 ʹ, 5–11.vii. 2005 (Ronquist lab); 1 Ƥ Wakulla Co., Apalachicola N.F., FS Rd. 390, N 30 ˚ 21.696 ʹ W084˚ 40.399 ʹ, 11–18.vii. 2005 (Ronquist lab); 1 Ƥ Wakulla Co., Apalachicola N.F., Post Office Bay, N 30 ˚ 3.565 ʹ W084˚ 59.051 ʹ, 13–20.vi. 2005 (Ronquist lab); 1 Ƥ Wakulla Co., Apalachicola N.F., Post Office Bay, N 30 ˚ 3.565 ʹ W084˚ 59.051 ʹ, 27.vi– 5.vii. 2005 (A. Vanderby); [ PCYU]; 12 ƤƤ Taylor Co., Rt 98 & Ecolina Riv., 1.iv. 1993 (S.M. Fullerton); [ UCFC]; GEORGIA: 1 Ƥ paratype Pine Park, 17.iii. 1939 (P.W. Fattig); [ NCSU]; MISSISSIPPI: 1 Ƥ Hattiesburg, 2.vii. 1944 (C.D. Michener); [ AMNH]; 3 ƤƤ Jackson Co., N 30.3957 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.

FSCA

Florida State Collection of Arthropods, The Museum of Entomology

AMNH

American Museum of Natural History

CUIC

Cornell University Insect Collection

NCSU

North Carolina State University Insect Museum

NMNH

Smithsonian Institution, National Museum of Natural History

PCYU

The Packer Collection at York University

UCFC

University of Central Florida

DNA

Department of Natural Resources, Environment, The Arts and Sport

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Hymenoptera

Family

Halictidae

Genus

Lasioglossum

Loc

Lasioglossum (Dialictus) leviense (Mitchell)

Gibbs, Jason 2011
2011
Loc

Dialictus leviensis

Mitchell 1960: 403
1960