Lasius bureni

This species is only known from the type series. Nothing is known about the biology of .

Identification
Worker similar to Lasius pubescens but SI 81 or less. Crest of petiolar scale about on a level with propodeal spiracles; sharp to moderately sharp, rarely blunt; emarginate. Longer standing hairs on gula usually measuring at least 0.12 mm, those on crest of scale usually numbering 4 to 6 or more. Pubescence dense and short on dorsum of gaster, dilute to moderate and longer on gula. Most of body quite pubescent, but dorsum of alitrunk relatively free of pubescence, shining. Color brown to yellowish brown.

Distribution
Known only from the type locality - Comstock, Wisconson.

Distribution based on Regional Taxon Lists
Nearctic Region: United States.

Nomenclature

 *  bureni. Acanthomyops bureni Wing, 1968: 135, figs. 159-167 (w.q.m.) U.S.A. Combination in Lasius: Ward, 2005: 13.

Worker
Lasius-like, similar to pubescens, but SI 81 or less. Crest of petiolar scale about on a level with propodeal spiracles; sharp to moderately sharp, rarely blunt; emarginate. Longer standing hairs on gula usually measuring at least 0.12 mm, those on crest of scale usually numbering 4 to 6 or more. Pubescence dense and short on dorsum of gaster, dilute to moderate and longer on gula.

Most of body quite pubescent, but dorsum of alitrunk relatively free of pubescence, shining. Color brown to yellowish brown.

Queen
Lasius-like in appearance; closely related to pubescens. Crest of erect petiolar scale on level with propodeal spiracles, sharp to moderately sharp, broadly and distinctly emarginate; sides more or less straight and diverging dorsally. Standing body hairs moderate in number and length, those on dorsum of gaster largely confined to posterior edges of tergites beyond first. Standing hairs on crest and sides of scale numbering 10 or more, with a maximum length 0.16 mm or more; those on gula numbering 8 or more, their maximum length 0.20 mm or greater, those on fore femur numbering about 8, with a maximum length 0.10 mm or more. Alitrunk with longer standing hairs measuring 0.28 mm or more. Antennae very slightly clavate, SI 70-73. Body size moderate, HW 1.20 mm or more. Pubescence on dorsum of gaster dense, its surface dull. Body color deep castaneous brown, appendages a little lighter.

Pubescence on head moderately dense. Dorsum of alitrunk and declivitous face of propodeum below spiracles glabrous.

Male
Crest of petiolar scale sharp to moderately sharp, weakly and broadly emarginate. In profile, scale is approximately an equilateral triangle. A few of the longer hairs at the posterior tip of the gaster 0.20 mm or a little longer. Standing hairs on gula not exceeding 0.12 mm. Pubescence on dorsum of gaster short, dense, that on most of the rest of the body dense to moderately dense, but scutellum nearly free of pubescence, shining. Body color dark brown, appendages a little lighter, head black.

Type Material
Type locality: Comstock, Barron Co., Wisconsin.

The type series is composed of 20 queens, 39 males, and 60 workers. Location of types: Holotype queen, paratype queen, 2 paratype males, and 4 paratype workers in the. Paratypes, 2 of each caste, in both the and Cornell Collections. Rest of the type series in the W. F. Buren Collection.

Etymology
This species is named for the collector, Dr. W. F. Buren, U.S. Department of Health, Education and Welfare, Bethesda, Md.