Tapinoma sessile

Hamm, C. A., 2010, Multivariate discrimination and description of a new species of Tapinoma from the Western United States., Annals of the Entomological Society of America 103, pp. 20-29 : 24-25

Tapinoma sessile ( Say 1836)

Neotype. Worker, with the following measurements (see Table 2 for full character definitions): HL, 0.68 mm; HW, 0.60 mm; SL, 0.60 mm; EL, 0.18 mm; MFC, 0.18 mm; EW, 0.14 mm; FL, 0.50 mm; LHL, 0.40 mm; PW, 0.42 mm; ES, 2.52 mm; SI, 88.2; and CI, 88.20. The neotype resides in the collection of the Museum of Comparative Zoology ( MCZ) at Harvard University and bears the following labels:

USA Posey Co.

New Harmony , IN

21- VI-09, 110 m

38.130° N, 87.935° W

Coll by: C. A. Hamm

Nest in soil next to house 5 m from grave of T. Say

This concolored black specimen does not differ in any significant way from the descriptions of Say (1836) and Shattuck (1992,1995). This specimen will carry a label designating it as the neotype. Additional material collected from this series has been deposited at the UCDC, MCZ, MSUC, and LACM.

Material Examined. ( LACM, UCDC, CSUF, CASC, UCBC, CIDA, MSUC, PSWC). Arizona: Oak Creek Canyon, Coconino County. California: Quincy, Butte County; South Lake Tahoe, El Dorado County; McK- enzie Table Mountain Preserve, Miller Preserve at Black Mountain Fresno County; Wyman Canyon, Inyo County; Eagle Lake Field Station, Lassen County; Agoura, Westwood Hills, Tan Bark Flat Los Angeles County; Coarsegold, Madera County; Ukiah, Mendocino County; Sagehen Creek, NV County; Lake Forest, orange County; Millard Canyon, Riverside County; Temecula Canyon, Riverside County; Woodcrest, Riverside County; Woodside, Riverside County; Big Bear, Arrowhead San Bernardino County; Los Perl asquitos Creek, Sweetwater River San Diego County; San Simeon, San Luis Obispo County; Los Olivos, Santa Barbara County; Redding, Shasta County; Russian River, Sonoma County; Sequoia National Park, Tulare County; Columbia, Tuolumne County; Moss Landing Marine Laboratories, Monterey County; Big Creek Reserve, Monterey County; ojai, Ventura County; Stebbins Cold Canyon Reserve, Yolo County; Davis, Yolo County. Colorado: Fort Collins, Larimer County; Vail, Eagle County. Illinois: Champaign, Champaign County. Indiana: Cedar Lake, La Grange County; New Harmony, Posey County. Louisiana: Alexandria, Rapids Parish. Nevada: Mt. Wheeler, Verdi, Washoe County; Lehman Caves, White Pine County. New Jersey: Camp Louemma, Sussex County. North Dakota: Montrose Township, Cavalier County; Golden Township, Walsh County; Roosevelt National Memorial Park, Billings County; Grand Forks, Grand Forks County. Michigan: Wakelee Fen, Cass County; MacCready Preserve, Jackson County. Oregon: South Cottage Grove, Lane County. UTAH: Bassets Spring, Uinta County. Montana: Browning, Glacier County. Washington: San Juan Island, San Juan County. Wisconsin: Madison, Dane County.

To further aid in the delimitation of T. sessile , the following means (± SD) are provided (n = number specimens examined) (see Table 2 for full character deinitions).

Worker. (n = 427). HL, 0.68 ± 0.06 mm; HW, 0.63 ± 0.08 mm; SL, 0.64 ± 0.07 mm; EL, 0.17 ± 0.02 mm; MFC, 0.22 ± 0.03 mm; EW, 0.14 ± 0.02 mm; FL, 0.53 ± 0.09 mm; LHL, 0.46 ± 0.08 mm; PW, 0.43 ± 0.05 mm; ES, 2.33 ± 0.47 mm; SI, 93 ± 3.58; and CI, 91.5 ± 4.39.

Male. (n = 59). HL, 0.71 ± 0.05 mm; HW, 0.73 ± 0.06 mm; SL, 0.69 ± 0.06 mm; EL, 0.29 ± 0.02 mm; MFC, 0.22 ± 0.02 mm; EW, 0.34 ± 0.02 mm; FL, 0.76 ± 0.07 mm; LHL, 0.65 ± 0.06 mm; PW, 0.75 ± 0.07 mm; MML, 1.09 ± 0.10 mm; WGL, 3.35 ± 0.31 mm; ES, 6.98 ± 1.04 mm; SI, 96.4 ± 4.81; and CI, 103 ± 2.62.

Queen. (n = 64). HL, 0.80 ± 0.05 mm; HW, 0.85 ± 0.05 mm; SL, 0.73 ± 0.06 mm; EL, 0.26 ± 0.02 mm; MFC, 0.28 ± 0.04 mm; EW, 0.21 ± 0.02 mm; FL, 0.72 ± 0.08 mm; LHL, 0.61 ± 0.08 mm; PW, 0.83 ± 0.06 mm; WL, 1.17 ± 0.09 mm; WGL, 3.52 ± 0.52 mm; ES, 5.54 ± 1.04 mm; SI, 91.8 ± 5.56; CI, 106 ± 3.18.