Research Article

 

New Records of Ants (Hymenoptera: Formicidae) for Arkansas with a Synopsis of Previous Records [pdf]

 

Joe. A. MacGown1, 3, JoVonn G. Hill1, and Michael Skvarla2

1Mississippi Entomological Museum, Department of Entomology and Plant Pathology, Mississippi State University, MS 39762
2Department of Entomology, University of Arkansas, Fayetteville, AR 72207
3Correspondence: jmacgown@entomology.msstate.edu

Received: 7-I-2011       Accepted: 7-IV-2011
 


Abstract: Ten new state records of Formicidae are reported for Arkansas including Camponotus obliquus Smith, Polyergus breviceps Emery, Proceratium crassicorne Emery, Pyramica metazytes Bolton, P. missouriensis (Smith), P. pulchella (Emery), P. talpa (Weber), Stenamma impar Forel, Temnothorax ambiguus (Emery), and T. texanus (Wheeler). A synopsis of previous records of ant species occurring in Arkansas is provided.

Keywords: Ants, new state records, Arkansas, southeastern United States

 

Introduction

Ecologically and physiographically, Arkansas is quite diverse with seven level III ecoregions and 32 level IV ecoregions (Woods, 2004). Topographically, the state is divided into two major regions on either side of the fall line, which runs northeast to southwest. The northwestern part of the state includes the Interior Highlands, which is further divided into the Ozark Plateau, the Arkansas River Valley, and the Ouachita Mountains. The southern and eastern portions of the state are located in the Gulf Coastal Plain, which is divided into the West Gulf Coastal Plain in the south, the Mississippi River Alluvial Plain in the east, and Crowley’s Ridge, a narrow upland region that bisects the Mississippi Alluvial Plain from north to south (Foti, 2010).
           AntWeb, a web site that provides faunal lists of ants (Fisher, 2002) lists neighboring Missouri as having 148 species of ants, Texas with 279, Louisiana with 128, Missouri with 148, and Mississippi with 173. Based on the diversity of ecoregions and proximity to these states with high faunal lists, it would seem likely that Arkansas also would have a similarly high list of ant species. In the only comprehensive survey of the ants of Arkansas, Warren and Rouse (1969) reported 88 species, some of which were later synonymized. However, as a result of recent surveys by General and Thompson (2007, 2008, 2009) and other surveys and taxonomic treatments by various authors, 120 valid species have been reported from Arkansas (Baroni Urbani and de Andrade, 2003; Bolton 2000; MacGown et al., 2007; MacKay, 1993; Pacheco, 2007; Smith, 1979; Trager, 1984; Trager et al., 2007; Wing, 1968).
           Here, we report new state records of ants for Arkansas and provide an updated list of species known to occur in the state (Table 1). The report of these new state records and the species list are based on collections made by the Mississippi Entomological Museum (MEM) staff, Michael Skvarla, specimens borrowed from the University of Arkansas Arthropod Museum (UAAM), and literature records. Vouchers of specimens collected by MacGown, Hill, and Skvarla are stored in the MEM. Species that were borrowed from the UAAM, MEM specimens, literature records, and other citations of records are noted in the second column of Table 1. New state records are in bold type, and a bold “E” follows exotic species. Synonyms and trinomial names used by Warren and Rouse (1969) and other authors were updated following Bolton et al. (2007). Species names are arranged alphabetically by genus and follow Fisher and Cover (2007).

 

Results and Discussion

We present 10 new state records for Arkansas: Camponotus obliquus Smith (labeled only “Arkansas, 1964–1965, ex-dead hickory”), Polyergus breviceps Emery (Conway County), Proceratium crassicorne Emery (Washington County), Pyramica metazytes Bolton (Conway County), P. missouriensis (Smith) (Newton County), P. pulchella (Emery) (Newton County), P. talpa (Weber) (Conway and Newton Counties), Stenamma impar Forel (Clark, Sharp, and Washington Counties), Temnothorax ambiguous (Emery) (Newton County), and T. texanus (Wheeler) (Conway County). The single specimen of C. obliquus was intermixed with a series identified as C. pylartes Wheeler in the University of Arkansas Arthropod Museum (UAAM). Specimens of P. breviceps were observed and collected as they raided a colony of F. subsericea Say at Petit Jean State Park on 5 August 2008 during the William H. Cross Expedition (for a complete list of the ants collected on this trip, see MacGown and Hill, 2008). The presence of P. breviceps in the state represented a somewhat surprising range extension, as its distribution is typically more western and northern (Smith, 1979). It is not known to occur elsewhere in the Southeast. Similarly, T. ambiguus has not been reported from any other southeastern state (MacGown, 2010). All of the other new state records included species that are found throughout the Southeast, and we expected to find them in Arkansas.
With these new additions to the state list, 131 species from seven subfamilies and 34 genera are now known to occur in Arkansas (Table 1). By no means do we consider this list to be complete. Continued collections in the state will assuredly result in the discovery of more species.
           We did not examine specimens of all species reported in the literature; therefore, we cannot guarantee the veracity of all historical identifications. We consider recent revisions, which included vouchered material, to be more reliable than the older study by Warren and Rouse (1969). However, the majority of the species reported by Warren and Rouse are known to occur in Arkansas. Excluding names lost to synonymy, only 10 species on their list were not collected by the MEM or reported by other authors. Many of the specimens from the Warren and Rouse study were deposited in the University of Arkansas Arthropod Museum. Four of these species, Aphaenogaster rudis Enzmann, Camponotus caryae (Fitch), Lasius claviger (Roger), and Tetramorium bicarinatum (Nylander) [listed as T. guineense (Fabricius) by Warren and Rouse (1969)], were examined and verified by MacGown.  
Solenopsis xyloni McCook, reported by Warren and Rouse (1969) from 25 counties, has not been collected recently in Arkansas. However, the historical presence of this species in the state is not doubted because Arkansas lies well within its natural distributional range (Trager, 1991). In other southeastern states, the red imported fire ant, Solenopsis invicta Burenhas been shown to displace both this species and S. geminata (Fabricius) as it has advanced its range (Tabor, 2000; Tschinkel, 2006). It is possible that S. invicta, which has been known to occur in Arkansas since at least 1953 (Tschinkel, 2006),might have caused a decline in or even extirpated S. xyloni populations in the state. Or, its absence in recent surveys may simply be a result of under collecting in the region. Such was the case with Solenopsis geminata, which was reported by Warren and Rouse in 1969, but not reported in the state again until 2008 (General and Thompson, 2008).
           Warren and Rouse (1969) reported Dorymyrmex pyramicus pyramicus (Roger) from 17 counties in Arkansas. According to Snelling (1995), species in the United States that had been identified historically as D. p. pyramicus actually represented more than one species. Based on the description given by Warren and Rouse, it is likely that the species they collected was either D. smithi Cole or D. insanus (Buckley). However, specimens were not available for study, and we cannot be certain which species they actually had. Therefore, we exclude it from our list at this time.
           Specimens reported as Formica fusca Linnaeus by Warren and Rouse (1969) were likely F. subsericea Say, which is the only black species of Formica known to occur in this region. At the time of the Warren and Rouse study, their identification would have been logical because F. subsericea was considered a synonym of F. fusca (Creighton, 1950). Furthermore, the range of F. fusca is considered to be much farther north and would not likely occur in the Southeast (Francoeur, 1973; Wilson and Francoeur, 1979). Specimens collected by Warren from the late 1960s and identified as F. fusca were borrowed from the University of Arkansas Arthropod Museum and determined to be F. subsericea by MacGown. Therefore, we exclude F. fusca from this species list.
Formica schaufussi Mayr was reported by Warren and Rouse (1969), but this name was later synonymized with F. biophilica Trager and F. dolosa Buren by Trager et al. (2007). Thus, the Warren and Rouse records may have represented F. biophilica Trager and/or F. dolosa Buren, both of which were reported as occurring in Arkansas by Trager et al. (2007).
           Although Warren and Rouse (1969) reported Pogonomyrmex badius (Latreille) as occurring in Arkansas, their records are dubious. This species is known to nest in deep sand in the coastal plain from North Carolina south to Florida and west to Louisiana (MacGown et al., 2008; Smith, 1979). If it were to be present in Arkansas, it would be expected to occur in similar habitat. However, records from Arkansas are from Logan and Scott Counties, neither of which has suitable sandhill habitat. No specimens of this species from their survey were available for study in the University of Arkansas Arthropod Museum. Therefore, we exclude it from this state list until such time as this record can be corroborated.
           DuBois (1986) reported that Monomorium viride Brown was known only from allopatric populations along the Atlantic coast including the New Jersey Pine Barrens, and various localities in North Carolina, Georgia, and Florida where it nests in sand. Recently, this species was reported from southern Mississippi (Storz and Tschinkel, 2004), and isolated inland populations of this species were discovered nesting in riverine dunes in Georgia (MacGown et al., 2009). If it were to be found in Arkansas, it would be associated with sandy soils; but Warren and Rouse (1969) described it as being in a variety of habitats, none of which were specifically mentioned as being sandy. Workers of M. viride are difficult to distinguish from workers of M. minimum (Buckley), a common southeastern species. Without the presence of queens, which are easily differentiated from M. minimum, it raises the likelihood that this species was misidentified. No specimens of M. viride were available for study in the University of Arkansas Arthropod Museum. Therefore, records of this species in Arkansas are questionable, and until verified specimens are discovered, M. viride should not be considered to be present in the state.
           General and Thompson (2007) erroneously reported Aphaenogaster picea (Wheeler) and Myrmica spatulata Smith as being listed by Warren and Rouse (1969), who actually listed A. rudis and M. americana, respectively. Specimens of both of latter species were borrowed from the UAAM and confirmed by MacGown. At this time, neither A. picea or M. spatulata are known to occur in Arkansas.
           Paratrechina longicornis (Latreille), reported by O’Conner (2009), is an Internet record, and should be considered less reliable. In fact, this record was based on a paper by Nickerson and Barbara (2009) that did not report P. longicornis from Arkansas. Additionally, this species was not included as occurring in Arkansas by Wetterer (2008) in an exhaustive literature review of this species’ distribution. If P. longicornis were to be found in Arkansas, it likely would be restricted to indoor populations. At this time, we exclude it from the species list, but recognize that indoor populations could potentially occur in the state.
           Other species reported from Arkansas that may be questionable include Solenopsis carolinensis Forel, S. molesta (Say), and S. texana Emery in the Solenopsis molesta complex (General & Thompson, 2007, 2008, 2009; Pacheco, 2007; Warren & Rouse, 1969). This species group is in drastic need of revision, and identifications of species are difficult. However, based on their distributions in the United States, all three of these species should occur in Arkansas, and we include them on the species list. Solenopsis “AR-01” was reported by General and Thompson (2009). This species is likely one of the three similar species already listed from Arkansas; therefore, we did not include it here.
           Another problematic genus is Forelius. Warren and Rouse (1969) reported Forelius pruinosus (Roger) [as Iridomyrmex pruinosus pruinosus (Roger)], F. analis (André) [as Iridomyrmex pruinosus analis (André)], and Forelius mccooki (McCook) [as Forelius foetidus foetidus (Buckley)] as occurring in Arkansas. Ward (2005) synonymized F. analis with F. pruinosus, leaving only two valid species in the United States, F. pruinosus and F. mccooki. However, at least four distinct morphotypes are known to occur in the United States including F. pruinosus, a blackish-colored sand-dwelling species with sparse erect setation; an undescribed, very setose species known to occur in sandhill habitats in Florida and Georgia (MacGown et al. 2009); F. mccooki, a somewhat hairy, western species that nests in a variety of open habitats; and an eastern species that was formerly identified as F. analis (before this species was synonymized with F. pruinosus). The latter morphotype is common throughout the Southeast in a variety of open habitats. It is easily distinguished from F. pruinosus, both morphologically and by habitat preference,and appears to be a distinctly different species than F. pruinosus. Due to the current invalidity of the name F. analis, this species recently has been identified as F. mccooki or as Forelius sp. It seems unlikely that this southeastern form is the same species as the western F. mccooki, which is generally more setose. Rather, it would seem that either this southeastern form is an undescribed species or that the name F. analis should be resurrected for this species. General and Thompson (2009) reported Forelius “species AR-01,” which was likely the southeastern “F. analis” species. At this time, we only include F. mccooki (which includes both the eastern and western forms) and F. pruinosus as occurring in Arkansas, but recognize that there may be three distinct species present, including F. pruinosus (in sandhill habitats), F. mccooki (in western Arkansas), and F. sp. (the common southeastern morphotype).
           Currently, nine exotic species are known to occur in Arkansas, including Brachymyrmex patagonicus Mayr (Argentina, Neotropics), Cardiocondyla venustula Wheeler (Old World Tropics), Hypoponera opaciceps (Mayr)(Brazil), Linepithema humile (Mayr) (Argentina), Monomorium pharaonis (Linnaeus) (Old World Tropics-Africa?), Pyramica membranifera (Emery) (Old World Tropics-Europe?), Solenopsis invicta (Brazil), S. richteri Forel (Argentina), and Tetramorium bicarinatum (Old World Tropics-SE Asia) (MacGown et al., 2010; McGlynn, 1999). Of these introduced species, S. invicta (red imported fire ant) has the most obvious presence in the state. According to the University of Arkansas Cooperative Extension Service web site (Loftin and Hopkins, 2010), Solenopsis richteri (black imported fire ant) has been reported from only two counties, Phillips and Crittenden. Linepithema humile (Argentine ant) and B. patagonicus (dark rover ant), both of which are pest species, currently have limited distributions in the state, but show potential for expanding their range. Monomorium pharaonis, a notorious invasive species, is not likely to pose serious problems in Arkansas due to the relatively cool climate, and populations would be relegated as occasional indoor pests at nurseries or other similar places. Cardiocondyla venustula is only known from Arkansas by a single specimen collected in Ashley County on 15 April 1972.

 

Acknowledgments

Collections were made with permission from Arkansas Department of Parks and Tourism. We thank Jeff Barnes (University of Arkansas) for the loan of specimens from the University of Arkansas Arthropod Museum, Michael Warriner for sending specimens of Pogonomyrmex comanche and other unidentified material from Arkansas, and David General for comments about the manuscript. This article is approved for publication as Journal Article No. J-11949 of the Mississippi Agricultural and Forestry Experiment Station. Research was supported by State Project MIS-311080 and the USDA-ARS Areawide Management of Imported Fire Ant Project (Richard L. Brown, Principal Investigator).

 

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Table 1. List of ant species in Arkansas (new state records in bold).
Names follow Bolton and Alpert (2011).

Genus/species

Collection/Literature Citation

Amblyopone pallipes (Haldeman)

MEM; General & Thompson, 2008; Warren & Rouse, 1969

Aphaenogaster carolinensis Wheeler

MEM; General & Thompson, 2008; Warren & Rouse, 1969

Aphaenogaster fulva Roger

MEM; General & Thompson, 2007, 2008, 2009; Warren & Rouse, 1969

Aphaenogaster lamellidens Mayr

MEM; General & Thompson, 2007, 2008, 2009; Warren & Rouse, 1969

Aphaenogaster rudis Enzmann

UAAM; Warren & Rouse, 1969

Aphaenogaster tennesseensis (Mayr)

MEM; General & Thompson, 2008, 2009; Warren & Rouse, 1969

Aphaenogaster texana Wheeler

MEM; General & Thompson, 2007, 2008; Warren & Rouse, 1969

Aphaenogaster treatae Forel

MEM; General & Thompson, 2009; Warren & Rouse, 1969

Brachymyrmex depilis Emery

MEM; General & Thompson, 2007, 2009; Warren & Rouse, 1969

Brachymyrmex patagonicus Mayr E

MEM; MacGown et al., 2007

Camponotus americanus Mayr

MEM; General & Thompson, 2007, 2008; Warren & Rouse, 1969

Camponotus caryae (Fitch)

UAAM; Warren & Rouse, 1969

Camponotus castaneus (Latreille)

MEM; General & Thompson, 2007, 2008, 2009; Warren & Rouse, 1969

Camponotus chromaiodes Bolton

MEM; Warren & Rouse, 1969

Camponotus decipiens Emery

General & Thompson, 2007; 2008, 2009; Warren & Rouse, 1969

Camponotus discolor (Buckley)

UAAM; General & Thompson, 2007; Warren & Rouse, 1969

Camponotus nearcticus Emery

MEM; General & Thompson, 2007, 2008; Warren & Rouse, 1969;

Camponotus obliquus Smith

UAAM

Camponotus pennsylvanicus (DeGeer)

MEM; General & Thompson, 2007, 2008; Warren & Rouse, 1969

Camponotus pylartes Wheeler

UAAM; General and Thompson, 2007; Warren & Rouse, 1969;

Camponotus sansabeanus (Buckley)

MEM; UAAM; Smith, 1979; Warren & Rouse, 1969

Camponotus snellingi Bolton

MEM; General & Thompson, 2008, 2009

Camponotus subbarbatus Emery

MEM; Warren & Rouse, 1969

Cardiocondyla venustula Wheeler E

UAAM; Warren & Rouse, 1980

Crematogaster ashmeadi Mayr

MEM; General & Thompson, 2007, 2009; Warren & Rouse, 1969

Crematogaster atkinsoni Wheeler

General & Thompson, 2007

Crematogaster cerasi (Fitch)

UAAM; General & Thompson, 2008, 2009; Smith, 1979

Crematogaster laeviuscula Mayr

UAAM; General & Thompson, 2007; Warren & Rouse, 1969

Crematogaster lineolata (Say)

MEM; General & Thompson, 2007, 2008, 2009; Warren & Rouse, 1969

Crematogaster minutissima Mayr

UAAM; General & Thompson, 2007, 2008, 2009; Warren & Rouse, 1969

Crematogaster missuriensis Emery

MEM; General & Thompson, 2007, 2009; Warren & Rouse, 1969

Crematogaster pilosa Emery

MEM; UAAM; General & Thompson, 2007; Warren & Rouse, 1969 (listed as C. clara Mayr)

Crematogaster vermiculata Emery

Smith, 1979

Cryptopone gilva (Roger)

MEM; General & Thompson, 2008; Smith, 1979

Discothyrea testacea Roger

MEM; General & Thompson, 2007, 2008, 2009

Dolichoderus mariae Forel

UAAM; MacKay, 1993; Warren & Rouse, 1969

Dolichoderus taschenbergi (Mayr)

MEM; UAAM; MacKay, 1993; Warren & Rouse, 1969

Dorymyrmex bureni (Trager)

General & Thompson, 2009

Dorymyrmex flavus McCook

UAAM; General & Thompson, 2008

Dorymyrmex insanus (Buckley)

General & Thompson, 2008

Forelius mccooki (McCook)

MEM; UAAM; Warren & Rouse, 1969

Forelius pruinosus (Roger)

UAAM; General & Thompson, 2007; Warren & Rouse, 1969

Formica biophilica Trager

MEM; Trager et al., 2007

Formica dolosa Buren

MEM; Trager et al., 2007; Warren & Rouse, 1969

Formica pallidefulva Latreille

MEM; General & Thompson, 2007, 2008; Trager et al., 2007; Warren & Rouse, 1969

Formica rubicunda Emery

MEM; General & Thompson, 2008

Formica subsericea Say

MEM; UAAM; Warren and Rouse, 1969 (reported as F. fusca)

Hypoponera opaciceps (Mayr) E

UAAM; General & Thompson, 2008, 2009

Hypoponera opacior (Forel)

MEM; UAAM; General & Thompson, 2007,2008, 2009; Warren & Rouse, 1969

Labidus coecus (Latreille)

MEM; UAAM; Smith, 1979; Warren & Rouse, 1969

Lasius alienus (Foerster)

MEM; General & Thompson, 2007; Smith, 1979; Warren & Rouse, 1969

Lasius claviger (Roger)

MEM; UAAM; Warren & Rouse, 1969

Lasius interjectus (Mayr)

MEM; UAAM; Warren & Rouse, 1969; Wing, 1968

Lasius neoniger Emery

MEM; UAAM; Warren & Rouse, 1969

Linepithema humile (Mayr) E

UAAM; Suarez, 2001; Warren & Rouse, 1969

Monomorium minimum (Buckley)

MEM; Dubois, 1986; General & Thompson, 2007, 2008, 2009; Warren & Rouse, 1969

Monomorium pharaonis (Linnaeus) E

MEM; UAAM; Warren & Rouse, 1969

Myrmecina americana Emery

MEM; General & Thompson, 2007, 2009; Warren & Rouse, 1969

Myrmica americana Weber

MEM; UAAM; General & Thompson, 2008, 2009; Warren & Rouse, 1969

Myrmica pinetorum Wheeler

MEM; General & Thompson, 2009

Myrmica punctiventris Roger

MEM; UAAM; General & Thompson, 2007, 2008, 2009; Smith, 1979; Warren & Rouse, 1969

Neivamyrmex nigrescens (Cresson)

MEM; UAAM; Smith, 1979; Snelling & Snelling, 2007; Warren & Rouse, 1969

Neivamyrmex opacithorax (Emery)

MEM; UAAM; Smith, 1979; Snelling & Snelling, 2007; Warren & Rouse, 1969

Neivamyrmex pilosus (F. Smith)

MEM; UAAM; Smith, 1979; Snelling & Snelling, 2007; Warren & Rouse, 1969

Neivamyrmex swainsonii (Shuckard)

General & Thompson, 2009

Nylanderia arenivaga (Wheeler)

UAAM; Trager, 1984; Warren & Rouse, 1969

Nylanderia faisonensis (Forel)

MEM; General & Thompson, 2009; Trager, 1984

Nylanderia parvula (Mayr)

MEM; Trager, 1984; Warren & Rouse, 1969

Nylanderia terricola (Buckley)

UAAM; General & Thompson, 2007, 2008, 2009; Trager, 1984

Nylanderia wojciki (Trager)

General & Thompson, 2008, 2009

Pheidole bicarinata Mayr

MEM; General & Thompson, 2007; Warren & Rouse, 1969

Pheidole dentata Mayr

MEM; General & Thompson, 2007, 2009; Warren & Rouse, 1969

Pheidole dentigula Smith

General & Thompson, 2007, 2008, 2009

Pheidole metallescens Emery

General & Thompson, 2009

Pheidole morrisi Forel

MEM; Warren & Rouse, 1969

Pheidole pelor Wilson

General & Thompson, 2009

Pheidole pilifera (Roger)

MEM; General & Thompson, 2007, 2008, 2009

Pheidole soritis Wheeler

MEM; Warren & Rouse, 1969

Pheidole tetra Creighton

MEM; General & Thompson, 2008, 2009; Wilson, 2003

Pheidole tysoni Forel

MEM; General & Thompson, 2007

Pogonomyrmex barbatus (Smith)

MEM; UAAM; Smith, 1979; Warren & Rouse, 1969

Pogonomyrmex comanche Wheeler

MEM; UAAM; General & Thompson, 2009; Smith, 1979; Warren & Rouse, 1969

Polyergus breviceps Emery

MEM

Polyergus lucidus Mayr

UAAM; General & Thompson, 2007; Warren & Rouse, 1969

Ponera exotica Smith

MEM; General & Thompson, 2008, 2009

Ponera pennsylvanica Buckley

MEM; UAAM; General & Thompson, 2007, 2008, 2009; Warren & Rouse, 1969

Prenolepis imparis (Say)

MEM; General & Thompson, 2007, 2009;Warren & Rouse, 1969

Proceratium crassicorne Emery

MEM

Proceratium creek de Andrade

Baroni Urbani & de Andrade, 2003

Proceratium croceum (Roger)

UAAM; Baroni Urbani & de Andrade, 2003

Proceratium pergandei (Emery)

MEM; Baroni Urbani and de Andrade, 2003; General & Thompson, 2007, 2008, 2009; Smith, 1979

Proceratium silaceum Roger

MEM; Baroni Urbani & de Andrade, 2003; General & Thompson, 2008; Smith, 1979

Protomognathus americanus (Emery)

UAAM; General & Thompson, 2007, 2009

Pseudomyrmex ejectus (Smith)

General & Thompson, 2009

Pseudomyrmex pallidus (Smith)

UAAM; General & Thompson, 2007, 2009; Warren & Rouse, 1969

Pyramica angulata (Smith)

MEM; Bolton, 2000

Pyramica clypeata (Roger)

UAAM; Bolton, 2000; General & Thompson, 2007, 2008, 2009; Smith, 1979; Warren & Rouse, 1969

Pyramica dietrichi (Smith)

MEM; Bolton, 2000; Smith, 1979

Pyramica filitalpa (Brown)

Bolton, 2000; Smith, 1979

Pyramica laevinasis (Smith)

MEM; UAAM; Bolton, 2000

Pyramica membranifera (Emery) E

General & Thompson, 2009

Pyramica metazytes Bolton

MEM

Pyramica missouriensis (Smith)

MEM

Pyramica ohioensis (Kennedy & Schramm)

MEM; Bolton, 2000; General & Thompson, 2008, 2009; Smith, 1979; Smith, 1979; Warren & Rouse, 1969

Pyramica ornata (Mayr)

MEM; Bolton, 2000; General & Thompson, 2007, 2009; Warren & Rouse, 1969

Pyramica pilinasis (Forel)

Bolton, 2000; Smith, 1979; Warren & Rouse, 1969

Pyramica pulchella (Emery)

MEM

Pyramica reflexa (Wesson & Wesson)

MEM; Bolton, 2000; General & Thompson, 2009

Pyramica rostrata (Emery)

MEM; Bolton, 2000; Warren & Rouse, 1969

Pyramica talpa (Weber)

MEM

Pyramica species AR-01

General & Thompson, 2009

Pyramica species AR-02

General & Thompson, 2009

Solenopsis carolinensis Forel

MEM; Pacheco, 2007

Solenopsis geminata (Fabricius)

General & Thompson, 2008; Warren & Rouse, 1969

Solenopsis invicta Buren E

MEM; General & Thompson, 2007, 2008, 2009; Smith, 1979

Solenopsis molesta (Say)

General & Thompson, 2007, 2008, 2009; Warren & Rouse, 1969

Solenopsis pergandei Forel

General & Thompson, 2009

Solenopsis richteri Forel

Loftin & Hopkins, 2010; Warren & Rouse, 1969

Solenopsis texana Emery

Pacheco, 2007; Warren & Rouse, 1969

Solenopsis xyloni McCook

UAAM; Warren & Rouse, 1969

Stenamma impar Forel

MEM; UAAM

Stenamma meridionale Smith

Smith, 1979; Smith, 1957; Warren & Rouse, 1969

Strumigenys louisianae Roger

MEM; Bolton, 2000; General & Thompson, 2007, 2008, 2009

Tapinoma sessile (Say)

MEM; General & Thompson, 2007, 2009; Warren & Rouse, 1969

Temnothorax ambiguus (Emery)

MEM

Temnothorax curvispinosus (Mayr)

MEM; General & Thompson, 2007, 2008, 2009; Warren & Rouse, 1969

Temnothorax pergandei (Emery)

MEM; General & Thompson, 2007, 2009; Warren & Rouse, 1969

Temnothorax schaumii (Roger)

MEM; General & Thompson, 2007; Warren & Rouse, 1969

Temnothorax texanus (Wheeler)

MEM

Tetramorium bicarinatum (Nylander) E

UAAM; listed as T. guineense-Warren & Rouse, 1969

Trachymyrmex septentrionalis (McCook)

MEM; General & Thompson, 2007, 2008, 2009; Warren & Rouse, 1969