Ants of Connecticut and Rhode Island

This list is based on A Field Guide to the Ants of New England and discussion with Stefan Cover (2019). The list is mostly just discarding those species listed in the guide that are known to be found in more northern, boreal habitats. There are also a few species that are not mentioned in the book that have recently been collected, i.e., Brachyponera chinensis and Forelius pruinosus.

The keys provided in the New England ant guide (New England Ant Identification) can be used to identify all the species except for the two mentioned above.

Related webpage:
 * New England Ant Species

Aphaenogaster

 * Aphaenogaster fulva
 * Aphaenogaster picea - a species complex
 * Aphaenogaster rudis - a species complex
 * Aphaenogaster treatae

Brachymyrmex

 * Brachymyrmex depilis

Brachyponera

 * Brachyponera chinensis

Camponotus

 * Camponotus americanus
 * Camponotus caryae
 * Camponotus castaneus
 * Camponotus chromaiodes
 * Camponotus nearcticus
 * Camponotus novaeboracensis
 * Camponotus pennsylvanicus

Crematogaster

 * Crematogaster cerasi
 * Crematogaster lineolata

Dolichoderus

 * Dolichoderus mariae
 * Dolichoderus plagiatus
 * Dolichoderus pustulatus
 * Dolichoderus taschenbergi

Forelius

 * Forelius pruinosus

Formica

 * Formica argentea
 * Formica aserva
 * Formica difficilis
 * Formica dolosa
 * Formica exsectoides
 * Formica glacialis
 * Formica hewitti
 * Formica impexa
 * Formica incerta
 * Formica integra
 * Formica lasioides
 * Formica neogagates
 * Formica neorufibarbis
 * Formica nepticula
 * Formica obscuriventris
 * Formica pallidefulva
 * Formica pergandei
 * Formica querquetulana
 * Formica rubicunda
 * Formica subaenescens
 * Formica subintegra
 * Formica subsericea

Formicoxenus

 * Formicoxenus provancheri

Hypoponera

 * Hypoponera punctatissima - non-native species

Lasius

 * Lasius americanus
 * Lasius brevicornis Emery, 1893
 * Lasius cf. umbratus'' - an undescribed species
 * Lasius claviger
 * Lasius interjectus
 * Lasius latipes
 * Lasius minutus
 * Lasius murphyi - occurs in bordering areas and is likely to be found in New England
 * Lasius nearcticus
 * Lasius neoniger
 * Lasius pallitarsis
 * Lasius speculiventris
 * Lasius subglaber
 * Lasius subumbratus
 * Lasius umbratus

Leptothorax

 * Leptothorax sp. AF-can - an undescribed species
 * Leptothorax sp. AF-erg - an undescribed species

Monomorium

 * Monomorium emarginatum
 * Monomorium floricola - non-native species
 * Monomorium pharaonis - non-native species
 * Monomorium viridum

Myrmecina

 * Myrmecina new species - an inquiline social parasite of Myrmecina americana
 * Myrmecina americana

Myrmica

 * Myrmica americana
 * Myrmica fracticornis
 * Myrmica incompleta
 * Myrmica latifrons
 * Myrmica lobifrons
 * Myrmica pinetorum
 * Myrmica punctiventris
 * Myrmica rubra - non-native species
 * Myrmica semiparasitica
 * Myrmica sp. AF-ine - an undescribed species
 * Myrmica sp. AF-scu - an undescribed species
 * Myrmica sp. AF-smi - an undescribed species
 * Myrmica sp. AF-sub - an undescribed species

Nylanderia

 * Nylanderia flavipes - non-native species
 * Nylanderia parvula

Paratrechina

 * Paratrechina longicornis - non-native species

Pheidole

 * Pheidole flavens non-native species
 * Pheidole pilifera

Polyergus

 * ''Polyergus sanwaldi
 * Polyergus lucidus

Ponera

 * Ponera pennsylvanica

Prenolepis

 * Prenolepis imparis

Proceratium

 * Proceratium crassicorne
 * Proceratium pergandei
 * Proceratium silaceum

Solenopsis

 * Solenopsis molesta

Stenamma

 * Stenamma brevicorne
 * Stenamma diecki
 * Stenamma impar
 * Stenamma schmittii

Stigmatomma

 * Stigmatomma pallipes

Strumigenys

 * Strumigenys metazytes
 * Strumigenys pergandei
 * Strumigenys pulchella

Tapinoma

 * Tapinoma melanocephalum - non-native species
 * Tapinoma new species - an inquiline social parasite of Tapinoma sessile
 * Tapinoma sessile

Temnothorax

 * Temnothorax ambiguus
 * Temnothorax americanus - as Protomognathus americanus
 * Temnothorax curvispinosus
 * Temnothorax longispinosus
 * Temnothorax schaumii
 * Temnothorax texanus

Tetramorium

 * Tetramorium atratulum - non-native species
 * Tetramorium immigrans - non-native species