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Lasioglossum paradmirandum (Knerer and Atwood, 1966)
Dialictus paradmirandus Knerer and Atwood, 1966

Life   Insecta   Hymenoptera   Apoidea   Halictidae   Lasioglossum
Subgenus: Dialictus

Lasioglossum paradmirandum, Mid-Atlantic Phenology
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Lasioglossum paradmirandum, Mid-Atlantic Phenology

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Lasioglossum paradmirandum MALE mm .x ZS PMax
© Copyright Laurence Packer 2014 · 7
Lasioglossum paradmirandum MALE mm .x ZS PMax
Overview

Identification Summary: Most of what had been called this species has been L. hitchensi; L. paradmirandum has an open fan;




Retrieved from: Gibbs, J. 2010. Revision of the metallic species of Lasioglossum (Dialictus)in Canada (Hymenoptera, Halictidae, Halictini). Zootaxa; 2591, 237-240

Dialictus paradmirandus Knerer and Atwood, 1966a: 886. ♀ ♂. Holotype. ♀ CANADA, Ontario, Iona, Elgin Co., 1.ix.1963 on Solidago, (G. Knerer), [ROM: 83856]. Examined.


Taxonomy. Hurd, 1979: Dialictus paradmirandus, p. 1969 (catalogue); Moure & Hurd, 1987: Dialictus paradmirandus, p. 119 (catalogue)


Diagnosis. Females of L. paradmirandum can be recognised by the diagnostic combination of mesoscutum tessellate with moderately dense punctures on the central disc (i=1–2d), mesepisternum tessellate-imbricate with shallow punctures, T1 acarinarial fan incomplete dorsally, metasomal terga coriarious, T1 declivitous surface with distinct microsculpture, T3–T4 with moderately dense tomentum partially obscuring surface and distinct fringes. They are most similar to L. fattigi and L. admirandum. Female L. fattigi have a more robust head, moderately sparse punctures on the lower paraocular area (i=1–1.5d), weakly imbricate mesoscutum and T3–T4 have sparse tomentum not obscuring surface and weak fringes (Fig. 171D). Female L. admirandum have the metasomal terga polished without evident microsculpture on the declivitous surface of T1.


Males of L. paradmirandum are similar to females but may be further distinguished by the moderately elongate head (length/width ratio = 1.03–1.04), elongate flagellomeres (length/width ratio = 1.69–1.83) with pale brownish yellow ventral surfaces, weakly reticulate dorsal portion and tessellate ventral portion of the mesepisternum, rounded posterior margin of the metapostnotum and impunctate apical impressed areas of the metasomal terga. They are most similar to L. mitchelli and L. fattigi. Male L. mitchelli have the posterior margin of the metapostnotum distinctly angled, more densely punctate mesoscutum and rugulose mesepisternum.


Male L. fattigi have elongate heads (length/width ratio = 1.07) and the dorsal portion of the mesepisternum is imbricate-tessellate.


Description. FEMALE. Length 5.12–5.98 mm; head length 1.34–1.58 mm; head width 1.37–1.62 mm; forewing length 3.42–4.09 mm.


Colouration. Head and mesosoma pale golden green, sometimes bluish green. Clypeus with apical half blackish brown, basal half and supraclypeal area sometimes golden. Antenna dark brown, flagellum with ventral surface dark reddish brown. Tegula pale reddish brown. Wing membrane subhyaline, venation and pterostigma brownish yellow. Legs brown, medio- and distitarsi reddish brown. Metasoma dark brown, terga and sterna with apical margins translucent brownish yellow.


Pubescence. Dull white. Moderately sparse. Head and mesosoma with moderately dense woolly hairs (1– 1.5 OD), longest on genal beard, metanotum and mesopleuron (2–2.5 OD). Lower paraocular area and gena with sparse tomentum, not obscuring surface. Propodeum with moderately dense plumose hairs on lateral and posterior surfaces (2–2.5 OD). Metasomal terga with sparse, fine setae. T1 acarinarial fan with wide dorsal opening, equal to width of lateral hair patches. T2 basolaterally and T3 with sparse tomentum partially obscuring surface. T4 with moderately dense tomentum obscuring most of surface. T2 apicolateral and T3–T4 apical margins with moderately strong fringes.


Surface sculpture. Face tessellate-imbricate, punctation moderately strong. Clypeus polished, punctation sparse (i=1–3d). Supraclypeal area with punctation sparse (i=1–3d). Lower paraocular area punctation dense (i≤d). Antennocular area punctation moderately dense (i=1–1.5d). Upper paraocular area, frons and ocellocular area reticulate-punctate. Gena weakly lineolate. Postgena imbricate. Mesoscutum tessellate, punctation fine, moderately dense between parapsidal lines (i=1–2d), dense laterad of parapsidal line (i≤d), and reticulate on anterolateral portions. Mesoscutellum similar to mesoscutum, submedial punctation sparse (i=1–2.5d). Axilla punctate. Metanotum imbricate. Preλpisternum weakly rugulose. Hypoepimeral area imbricate. Mesepisternum weakly tessellate-imbricate with obscure shallow punctures (i=1.5–2d). Metepisternum dorsal third rugoso-striate and ventral portion imbricate. Metapostnotum weakly rugoso-striate, posterior margin imbricate. Propodeum with dorsolateral slope ruguloso-imbricate, lateral and posterior surfaces tessellate. Metasomal terga coriarious, punctation on basal halves moderately dense (i=1–1.5d), obscure on apical halves (i=2–2.5d), T1 dorsal portion and T2 apical half virtually impunctate.


Structure. Head moderately wide (length/width ratio = 0.97–0.98). Eyes convergent below (UOD/LOD ratio = 1.26–1.28). Clypeus ½ below suborbital tangent, apicolateral margins strongly convergent. Antennal sockets moderately close (IAD/OAD < 0.6). Frontal line carinate, ending 2.5 OD below median ocellus. Gena narrower than eye. Inner metatibial spur pectinate with 3 teeth. Metapostnotum moderately elongate (MMR ratio = 1.16–1.30), posterior margin rounded onto posterior surface. Propodeum with oblique carina virtually absent, lateral carina weak, reaching halfway to dorsal margin.


MALE. Similar to female except for the usual secondary sexual characters and as follows. Length 5.19– 5.61 mm; head length 1.40–1.54 mm; head width 1.34–1.50 mm; forewing length 3.23–1.58 mm.


Colouration. Flagellum with ventral surface pale brownish yellow. Tarsi pale brownish yellow. Pubescence. Face below eye emargination with moderately dense tomentum, partially obscuring surface. Lower paraocular area with dense tomentum obscuring surface. Gena with sparse tomentum not obscuring surface. T2–T4 basolaterally with very sparse tomentum. S2–S3 apicolaterally with moderately dense plumose hairs. S4–S5 laterally with dense plumose hairs.


Surface sculpture. Clypeus punctation moderately dense (i=1–2d). Metanotum rugulose. Hypoepimeral area rugulose. Mesepisternum dorsal portion ruguloso-reticulate and ventral portion ruguloso-imbricate. Metepisternum ruguloso-striate. Metapostnotum rugoso-striate, posterior margin imbricate. Propodeum dorsolateral slope rugose, lateral surface with anterior portion rugulose and posterior portion rugose, posterior surface rugose. Metasomal terga coriarious, punctation moderately dense throughout (i=1–2d) except apical impressed areas impunctate.


Structure. Head moderately elongate (length/width ratio = 1.03–1.04). Eyes strongly convergent below (UOD/LOD ratio =1.48–1.59). Clypeus 2/3 below suborbital tangent, apicolateral margins weakly convergent. Antennal sockets distant (IAD/OAD > 1.2). Frontal line carinate, ending 2 OD below median ocellus. Pedicel shorter than F1. F2 length 1.7–1.8X F1. F2–F10 (length/width ratio = 1.69–1.83). Metapostnotum moderately elongate (MMR ratio = 1.13–1.30), posterior margin rounded onto posterior surface.


Terminalia. S7 with median lobe narrowly acuminate, apex narrowly rounded. S8 with apicomedial margin weakly convex. Genitalia as in Fig. 172E–F. Gonobase with ventral arms widely separated. Gonostylus small, dorsal setae elongate. Retrorse lobe narrow, strongly attenuated apically.


Range. Ontario south to North Carolina, west to Wisconsin, Iowa (Fig. 170).


Additional material examined. CANADA: ONTARIO: 3♂♂ Iona, 15.ix.1963 (G. Knerer); 4♂♂ Iona, 17.ix.1963 (G. Knerer); [ROM]; 2♀♀ Ipperwash, 25.v.1962 (G. Knerer); [ROM]; 1♀ Norfolk, N42°38.959΄ W080°34.124΄, 18.ix.2007 (A. Taylor); 1♀ Vandorf, 26.v.1960; [PCYU]; 1♂ paratype Iona, 1.ix.1963 (G. Knerer); 1♀ paratype Iona, 10.ix.1963 (G. Knerer); [CNC]; USA: ILLINOIS: 1♀ Dwight, 25.vi.006 (J. Gibbs); 1♀ E of Carlinville, N39.2596 W089.5485, 25.vi.2006 (J. Gibbs); IOWA: 1♀ Allamakee Co., Waymiller Prairie, 12.5 km N Lansing, N43°27΄15΄΄ W091°18΄13΄΄, 323 m, 18.vi.2005 (D. Christensen); MARYLAND: 1♀ Garrett Co., N39.5512 W079.299, 2004 (S.W. Droege); MISSOURI: 1f/ Montgomery Co.,Danville, 4.vi.2000 (Arduser); NORTH CAROLINA: 1♀ Blue Ridge Parkway, near Jefferson, N36.34234 W081.37465, 13.viii.2006 (J. Gibbs); [PCYU]; PENNSYLVANIA: 1♀ Bucks Co., N40°26΄10΄΄ W075°10΄19΄΄, 14.vii.2005 (C. Locke); 1♀ Bucks Co., N40°23΄05΄΄ W075°15΄41΄΄, 21.vii.2005 (R. Malfi); 1♀ Montgomery Co., N40°18΄23΄΄ W075°24΄13΄΄, 5.vii.2005 (C. Locke); 1♀ Montgomery Co., N40°18΄23΄΄ W075°24΄13΄΄, 11.vii.2005 (R. Malfi); [RWRU]; WEST VIRGINIA: 1♀ Hampshire Co., N39.34106 W078.464, 29–30.v.2004 (S.W. Droege); [PCYU]; WISCONSIN: 1♀ Dane Co., Westport Drumlin, 11.vii.1996 (R.A. Henderson); [IRCW]; 1♀ Sauk Co., Spring Green Preserve, N43.19785 W090.05904, 23.vii.2006 (A. Wolf); [PCYU].


Floral records. ASTERACEAE: Echinacea simulate, Solidago, Taraxacum, SALICACEAE: Salix.


Comments. Common. Females collected in spring or fall (including the holotype) are distinctly larger than summer specimens, presumably as a result of caste differences associated with eusociality. See comments for L. fattigi above.


Identification
Extracted by Gibbs J., 2011. Revision of the metallic Lassioglossum (Dialictus) of the eastern North American (Hymenoptera: Halictidae: Halictini). Zootaxa.

Diagnosis. Female L. paradmirandum can be recognised by the following diagnostic combination: mesoscutum tes- sellate, punctures moderately dense between parapsidal lines (i=1–2d); mesepisternum tessellate-imbricate, shallow punctures visible; T1 acarinarial fan with dorsal opening; T1 declivitous surface with distinct coriarious microsculpture; T3–T4 with moderately dense tomentum partially obscuring surface and distinct apical fringes. They are most similar to L. fattigi and L. admirandum. Female L. fattigi have a more robust head, moderately sparse punctures on lower paraocular area (i=1–1.5d), weakly imbricate mesoscutum, and T3–T4 have sparse tomentum not obscuring surface and sparse apical fringe hairs. Female L. admirandum have metasomal terga polished without evident microsculpture on declivitous surface of T1.

Male L. paradmirandum are similar to females but may be further distinguished by head moderately elongate (length/width ratio = 1.03–1.04); flagellomeres long (length/width ratio = 1.69–1.83), pale brownish yellow ventrally; mesepisternum weakly reticulate dorsally, tessellate ventrally; metapostnotum rounded onto posterior propodeal surface, and apical impressed areas of metasomal terga impunctate. They are most similar to L. mitchelli and L. fattigi. Male L. mitchelli have metapostnotum sharply angled onto posterior propodeal surface, mesoscutum more densely punctate, and mesepisternum rugulose. Male L. fattigi have elongate heads (length/width ratio = 1.07) and mesepisternum imbricatetessellate dorsally.


Names
Scientific source:

Supported by

Hosts · map
FamilyScientific name @ source (records)
Apiaceae  Daucus carota @ CUIC_ENT (1)
Asteraceae  Chrysanthemum @ CUIC_ENT (15)

Solidago juncea @ CUIC_ENT (1)

Tussilago farfara @ CUIC_ENT (1)
Brassicaceae  Barbarea vulgaris @ CUIC_ENT (1)

Lesquerella filiformis @ AMNH_BEE (12)
Buxaceae  Buxus @ CUIC_ENT (6)
Fabaceae  Medicago sativa @ CUIC_ENT (1)
J. rykken  1029 @ JRYB__SHEN (1)
M.l. epps  808 @ JRYB__SHEN (1)
Ml. epps  808 @ JRYB__SHEN (2)
N. rice  1031 @ JRYB__SHEN (1)
P. clifton  672 @ JRYB__SHEN (3)
Plantaginaceae  Plantago @ AMNH_BEE (1)
R. minor  808 @ JRYB__SHEN (1)
Rosaceae  Potentilla recta @ CUIC_ENT (4)
Salicaceae  Salix humilis @ CUIC_ENT (1)

Salix @ CUIC_ENT (2)
Sapindaceae  Acer rubrum @ CUIC_ENT (4)

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Updated: 2019-08-25 15:24:39 gmt
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