Nylanderia arenivaga

This nocturnal species is commonly found in open, yellow sand areas in the eastern United States from Massachusetts to Florida, with some collections to the west along the Gulf States (Kallal & LaPolla, 2012).

Identification
Kallal & LaPolla (2012) - Overall coloration yellow; gaster distally becomes brown; macrosetae dense, particularly on gaster. Compare with: Nylanderia phantasma and Nylanderia querna.

This species may be differentiated from N. phantasma based on their darker yellow coloration, dark tip of the gaster, presence of brown macrosetae on the mesosoma and gaster, and brown (not reddish) teeth. In Georgia and Florida, where both species are known to occur sympatrically, N. arenivaga is more common on yellow sands while N. phantasma is found on white (M. Deyrup, pers. comm.). The worker of this species is very similar in color to Nylanderia querna. The presence of a darker posterior region of the gaster and macrosetae pattern noted above distinguish N. arenivaga from N. querna. Nylanderia arenivaga has long, slender digiti and cuspides that are shared only with N. phantasma, whereas N. querna has shorter digiti and cuspides that are more similar to species such as Nylanderia parvula and Nylanderia faisonensis.

Distribution
Eastern US, Massachusetts to Florida, Gulf coast states.

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

Habitat
Open sandy areas.

Biology
This widely distributed species is a sand specialist, being found almost exclusively in deep sand deposits.

Kallal & LaPolla (2012) - Nylanderia arenivaga nests are greater than 20–30 cm deep (Trager, 1984). Numerous flat crater nests 4–7 cm in diameter clustered in one area suggest either polydomy or many neighboring colonies (Wheeler, 1905; Thompson, 1988). Up to 20 entrances may be shared by one nest (Trager, 1984). Alates have been observed in January, July, and August, with flights occurring in January through April, with later flights in the northern portion of their range (Trager, 1984). Workers are observed to forage all winter long in southern portions of their range (Trager, 1984).

Association with Other Organisms
Several other arthropods are known to have associations with N. arenivaga. The planthopper Oecleus borealis and Myrmecophilus crickets have both been recorded in association N. arenivaga, the former possibly benefiting from ant tunnelling to reach roots to feed (Thompson 1984). Recently, the phorid fly Pseudacteon gracilisetus was discovered and described. These flies were seen “dive-bombing” workers presumably to parasitize them (Brown et al., 2011).



Nomenclature

 *  arenivaga. Prenolepis arenivaga Wheeler, W.M. 1905f: 391, fig. 3 (w.m.) U.S.A. Kallal & LaPolla, 2012: 10 (q.). Combination in Pr. (Nylanderia): Forel, 1922: 98; in Paratrechina (Nylanderia): Emery, 1925b: 221; in Nylanderia: LaPolla, Brady & Shattuck, 2010a: 127. Subspecies of melanderi: Creighton, 1950a: 408. Revived status as species: Trager, 1984b: 119.

Worker
Kallal & LaPolla (2012) - Measurements (n=21): TL: 1.84–2.63; HW: 0.43–0.64; HL: 0.54–0.70; EL: 0.13–0.19; SL: 0.55–0.78; PW: 0.33–0.44; WL: 0.63–0.87; GL: 0.63–1.18; PH: 0.17–0.27; PFL: 0.46–0.69; PFW: 0.11-0.19.SMC: 1–12; PMC: 2–7; MMC: 1–4. Indices: CI: 78–99; REL: 23–30; SI: 98–123; FI: 81–126.

Overall yellow; head slightly darker, mandibles with brownish teeth, mesocoxae and metacoxae same color as mesosoma; posterior region of gaster brownish; cuticle smooth and shiny; cephalic pubescence dense; mesosoma and gastral pubescence virtually absent; macrosetae particularly numerous on gaster. Head ovate; posterior margin slightly emarginated medially; scapes surpass posterior margin by about the length of first 3–4 funicular segments; ocelli not apparent. Pronotal anterior face approximately 45°; pronotum inflected weakly with pronotal anterior face shorter than pronotal dorsal face; anterior margin of mesonotum continuous with posterior pronotal margin; propodeum low with a rounded dorsal face descending smoothly into shorter declivitous face.

Queen
Kallal & LaPolla (2012) - Measurements (n=4) TL: 4.20–4.67; HW: 0.64–0.90; HL: 0.85–1.01; EL: 0.27–0.31; SL: 0.86–0.95; PW: 1.00–1.18; MW: 0.93–1.05; WL: 1.45–1.59; GL: 1.88–2.15; PH: 0.47–0.57; PFL: 0.81–0.96; PFW: 0.21–0.28. SMC: 3–7; PMC: 3–10; MMC: 10–25; MtMC: 3–7. Indices: CI: 74–99; REL: 29–33; SI: 94–110; FI: 88–111.

Overall yellow with darker, yellow-brown portions of mesosoma and gaster; generally darker coloration than in worker; cuticle smooth and shiny; dense pubescence covers entire body; pubescence yellow, macrosetae yellowish-brown. Head as broad as it is long; scapes surpass posterior margin by first 3–4 funicular segments. Propodeum with short, sloped dorsal face and longer declivitous face.

Male
Kallal & LaPolla (2012) - Measurements (n=8): TL: 1.77–2.26; HW: 0.46–0.53; HL: 0.47–0.56; EL: 0.18–0.22; SL: 0.51–0.64; PW: 0.46–0.58; MW: 0.41–0.56; WL: 0.58–0.79; GL: 0.64–0.89; PH: 0.18–0.37; PFL: 0.47–0.64; PFW: 0.10–0.14; PL: 0.21–0.30. SMC: 0–5; MMC: 3–12; MtMC: 2–5. Indices: CI: 94–104; REL: 38–48; SI: 101–116; FI: 97–120.

Overall brown, with distal segments of legs, mandibles, and antennae yellowish; gaster often darker brown than remainder of body; cuticle smooth and shiny in areas not obscured by pubescence; cephalic pubescence moderate; mesonotum with dense pubescence; gastral pubescence virtually absent. Head as broad as long; eyes convex, extending well beyond lateral margin of head in full face view; scapes surpass posterior margin by first 2–4 funicular segments; mandible with long, straight inner mandibular margin, a basal angle at approximately 90°, and a smooth masticatory margin with a single, large apical tooth. Mesosoma enlarged to accommodate flight muscles; in lateral view, pronotal margin short and straight; propodeum with steep dorsal face slightly longer than the declivitous face. Genitalia: parameres laterally oriented, long, triangular, and curved slightly inward; digiti and cuspides elongate, slightly curved toward each other, with rounded, peg-like teeth present on the surfaces where they meet; cuspides broadly rounded distally; aedeagal valves triangular, tapered slightly distally, teeth absent; ninth sternite broad with short, blunt lateral apodemes and short medial apodeme.

References based on Global Ant Biodiversity Informatics

 * Annotated Ant Species List Ordway-Swisher Biological Station. Downloaded at http://ordway-swisher.ufl.edu/species/os-hymenoptera.htm on 5th Oct 2010.
 * Callcott A. M. A., D. H. oi, H. L. Collins, D. F. Williams, and T. C. Lockley. 2000. Seasonal Studies of an Isolated Red Imported Fire Ant (Hymenoptera: Formicidae) Population in Eastern Tennessee. Environmental Entomology, 29(4): 788-794.
 * Carroll T. M. 2011. The ants of Indiana (Hymenoptera: Formicidae). Master's Thesis Purdue university, 385 pages.
 * Cokendolpher J. C., and O. F. Francke. 1990. The ants (Hymenoptera, Formicidae) of western Texas. Part II. Subfamilies Ecitoninae, Ponerinae, Pseudomyrmecinae, Dolichoderinae, and Formicinae. Special Publications, the Museum. Texas Tech University 30:1-76.
 * Cokendolpher J.C., Reddell J.R., Taylor S.J, Krejca J.K., Suarez A.V. and Pekins C.E. 2009. Further ants (Hymenoptera: Formicidae) from caves of Texas [Hormigas (Hymenoptera: Formicdae) adicionales de cuevas de Texas]. Texas Memorial Museum Speleological Monographs, 7. Studies on the cave and endogean fauna of North America, V. Pp. 151-168
 * Coovert, G.A. 2005. The Ants of Ohio (Hymenoptera: Formicidae) Ohio Biological Survey Bulletin New Series Volume 15(2):1-196
 * Dash S. T. and L. M. Hooper-Bui. 2008. Species diversity of ants (Hymenoptera: Formicidae) in Louisiana. Conservation Biology and Biodiversity. 101: 1056-1066
 * Dattilo W. et al. 2019. MEXICO ANTS: incidence and abundance along the Nearctic-Neotropical interface. Ecology https://doi.org/10.1002/ecy.2944
 * Deyrup M., C. Johnson, G. C. Wheeler, J. Wheeler. 1989. A preliminary list of the ants of Florida. Florida Entomologist 72: 91-101
 * Deyrup M., L. Deyrup, and J. Carrel. 2013. Ant Species in the Diet of a Florida Population of Eastern Narrow-Mouthed Toads, Gastrophryne carolinensis. Southeastern Naturalist 12(2): 367-378.
 * Deyrup, M. and J. Trager. 1986. Ants of the Archbold Biological Station, Highlands County, Florida (Hymenoptera: Formicidae). Florida Entomologist 69(1):206-228
 * Dubois, M.B. and W.E. Laberge. 1988. An Annotated list of the ants of Illionois. pages 133-156 in Advances in Myrmecology, J. Trager
 * Epperson, D.M. and C.R. Allen. 2010. Red Imported Fire Ant Impacts on Upland Arthropods in Southern Mississippi. American Midland Naturalist, 163(1):54-63.
 * Forster J.A. 2005. The Ants (hymenoptera: Formicidae) of Alabama. Master of Science, Auburn University. 242 pages.
 * Frye J. A., T. Frye, and T. W. Suman. 2014. The ant fauna of inland sand dune communities in Worcester County, Maryland. Northeastern Naturalist, 21(3): 446-471.
 * Graham J.H., H.H. Hughie, S. Jones, K. Wrinn, A.J. Krzysik, J.J. Duda, D.C. Freeman, J.M. Emlen, J.C. Zak, D.A. Kovacic, C. Chamberlin-Graham, H. Balbach. 2004. Habitat disturbance and the diversity and abundance of ants (Formicidae) in the Southeastern Fall-Line Sandhills. 15pp. Journal of Insect Science. 4: 30
 * Graham, J.H., A.J. Krzysik, D.A. Kovacic, J.J. Duda, D.C. Freeman, J.M. Emlen, J.C. Zak, W.R. Long, M.P. Wallace, C. Chamberlin-Graham, J.P. Nutter and H.E. Balbach. 2008. Ant Community Composition across a Gradient of Disturbed Military Landscapes at Fort Benning, Georgia. Southeastern Naturalist 7(3):429-448
 * Hernandez, F. Varela and G. Castano-Meneses. 2010. Checklist, Biological Notes and Distribution of Ants (Hymenoptera: Formicidae) from Barranca de Metztitlán Biosphere Reserve, Hidalgo, Mexico. Sociobiology 56(2):397-434
 * Hess C. G. 1958. The ants of Dallas County, Texas, and their nesting sites; with particular reference to soil texture as an ecological factor. Field and Laboratory 26: 3-72.
 * Hill J. G. 2006. Field observations of Pheidole pilifera (Roger) and Paratrechina arenivaga (Wheeler) (Hymenoptera: Formicidae) in a Black Belt Prairie remnant in Mississippi. Journal of the Mississippi Academy of Sciences. 51: 183-186.
 * Hill J.G. & Brown R. L. 2010. The Ant (Hymenoptera: Formicidae) Fauna of Black Belt Prairie Remnants in Alabama and Mississippi. Southeastern Naturalist. 9: 73-84
 * Ipser R. M. 2004. Native and exotic ants (Hymenoptera: Formicidae) of Georgia: Ecological Relationships with implications for development of biologically-based management strategies. Doctor of Philosophy thesis, University of Georgia. 165 pages.
 * Ivanov K. 2015. Checklist of the ants (Hymenoptera: Formicidae) of Ohio. Conference: Ohio Natural History Conference, At Columbus OH
 * Ivanov K. 2019. The ants of Ohio (Hymenoptera, Formicidae): an updated checklist. Journal of Hymenoptera Research 70: 65–87.
 * Ivanov K., L. Hightower, S. T. Dash, and J. B. Keiper. 2019. 150 years in the making: first comprehensive list of the ants (Hymenoptera: Formicidae) of Virginia, USA. Zootaxa 4554 (2): 532–560.
 * Johnson C. 1986. A north Florida ant fauna (Hymenoptera: Formicidae). Insecta Mundi 1: 243-246
 * Kallal R. J, and J. S. Lapolla. 2012. Monograph of Nylanderia (Hymenoptera: Formicidae) of the world, part II: Nylanderia in the Nearctic. Zootaxa 3508: 1-64.
 * MacGown J. A., J. G. Hill, R. L. Brown, T. L. Schiefer, J. G. Lewis. 2012. Ant diversity at Noxubee National Wildlife Refuge in Oktibbeha, Noxubee, and Winston Counties, Mississippi. Mississippi Agricultural and Forestry Experiment Station Bulletin 1197: 1-30
 * MacGown J. A., J. G. Hill, and R. L. Brown. 2010.  Native and exotic ant in Mississippi state parks.  Proceedings:  Imported Fire Ant Conference, Charleston, South Carolina, March 24-26, 2008: 74-80.
 * MacGown J. A., and R. L. Brown. 2006. Survey of the ants (Hymenoptera: Formicidae) of the Tombigbee National Forest in Mississippi. Journal of the Kansas Entomological Society 79(4):325-340.
 * MacGown, J.A and J.A. Forster. 2005. A preliminary list of the ants (Hymenoptera: Formicidae) of Alabama, U.S.A. Entomological News 116(2):61-74
 * MacGown, J.A. and R.L. Brown. 2006. Observations on the High Diversity of Native Ant Species Coexisting with Imported Fire Ants at a Microspatial Scale in Mississippi. Southeastern Naturalist 5(4):573-586
 * MacGown, J.A. and R.L. Brown. 2006. Survey of the ants (Hymenoptera: Formicidae) of the Tombigbee National Forest in Mississippi. Journal of the Kansas Entomological Society 79(4):325-340.
 * MacGown, J.A., J.G. Hill, R.L. Brown and T.L. 2009. Ant Diversity at Noxubee National Wildlife Refuge in Oktibbeha, Noxubee, and Winston Counties, Mississippi Report #2009-01. Schiefer. 2009.
 * Mackay, W., and E. Mackay. The ants of New Mexico. The Edwin Mellen Press, 2002.
 * McDonald D. L., D. R. Hoffpauir, and J. L. Cook. 2016. Survey yields seven new Texas county records and documents further spread of Red Imported Fire Ant, Solenopsis invicta Buren. Southwestern Entomologist, 41(4): 913-920.
 * O'Keefe S. T., J. L. Cook, T. Dudek, D. F. Wunneburger, M. D. Guzman, R. N. Coulson, and S. B. Vinson. 2000. The Distribution of Texas Ants. The Southwestern Entomologist 22: 1-92.
 * Trager, J. and C.Johnson. 1985. A slave-making ant in Florida: Polyergus lucidus with observations on the natural history of its host Formica archboldi (Hymenoptera: Formicidae). The Florida Entomologist 68(2):261-266.
 * Van Pelt A. F. 1966. Activity and density of old-field ants of the Savannah River Plant, South Carolina. Journal of the Elisha Mitchell Scientific Society 82: 35-43.
 * Van Pelt A., and J. B. Gentry. 1985. The ants (Hymenoptera: Formicidae) of the Savannah River Plant, South Carolina. Dept. Energy, Savannah River Ecology Lab., Aiken, SC., Report SRO-NERP-14, 56 p.
 * Vasquez-Bolanos M. 2011. Checklist of the ants (Hymenoptera: Formicidae) from Mexico. Dugesiana 18(1): 95-133.
 * Vásquez-Bolaños M. 2011. Lista de especies de hormigas (Hymenoptera: Formicidae) para México. Dugesiana 18: 95-133
 * Warren, L.O. and E.P. Rouse. 1969. The Ants of Arkansas. Bulletin of the Agricultural Experiment Station 742:1-67
 * Wheeler, G.C. and J. Wheeler. 1985. A checklist of Texas ants. Prairie Naturalist 17:49-64.