There are 165 insects that start with the letter I, from Iaspis flavescens to Isotoma. Below you will find them listed alphabetically along with some general information about each. Click the toggle view buttons in the top right corner to switch between the card and the table view.
For each item you will find the following information
Order: The subclass the insects belongs to
Habitat: The places or type of weather the insects lives in
Scientific name: The designation that scientists use to catalog the species
Name: Iaspis flavescens
Order: Hymenoptera
Habitat: Forests
Scientific name: Iaspis flavescens
Name: Icaricia icarioides
Order: Lepidoptera
Habitat: Grasslands
Scientific name: Icaricia icarioides
Name: Icarus Blue
Order: Lepidoptera
Habitat: Grasslands
Scientific name: Polyommatus icarus
Name: Icerya purchasi
Order: Hemiptera
Habitat: Plants
Scientific name: Icerya purchasi
Name: Ichneumon fly
Order: Hymenoptera
Habitat: Worldwide
Scientific name: Ichneumonidae
Name: Ichneumon nigriceps
Order: Hymenoptera
Habitat: Forest
Scientific name: Ichneumon nigriceps
Name: Ichneutica ceraunias
Order: Lepidoptera
Habitat: Grasslands
Scientific name: Ichneutica ceraunias
Name: Ichnoptera
Order: Orthoptera
Habitat: Grassland
Scientific name: Ichnoptera borealis
Name: Ichthyiurinae
Order: Coleoptera
Habitat: Aquatic
Scientific name: Ichthyiurinae
Name: Ichthyoderma
Order: Coleoptera
Habitat: Aquatic
Scientific name: Ichthyoderma
Name: Ichthyura inclusa
Order: Lepidoptera
Habitat: Deciduous forests
Scientific name: Ichthyura inclusa
Name: Icius
Order: Araneae
Habitat: Urban
Scientific name: Icius hamatus
Name: Icterica
Order: Diptera
Habitat: Forests
Scientific name: Icterica sororcula
Name: Icterus Beetle
Order: Coleoptera
Habitat: Forests
Scientific name: Icterus icterus
Name: Icthyurodes
Order: Coleoptera
Habitat: Aquatic
Scientific name: Icthyurodes
Name: Ictinia mississippiensis
Order: Odonata
Habitat: Wetlands
Scientific name: Ictinia mississippiensis
Name: Idaea sericeata
Order: Lepidoptera
Habitat: Woodland
Scientific name: Idaea sericeata
Name: Idana marginata
Order: Diptera
Habitat: Forests
Scientific name: Idana marginata
Name: Idiasta
Order: Hymenoptera
Habitat: Forests
Scientific name: Idiasta
Name: Idiasta scitula
Order: Hymenoptera
Habitat: Grassland
Scientific name: Idiasta scitula
Name: Idiocerus
Order: Hemiptera
Habitat: Trees
Scientific name: Idiocerus
Name: Idiochaeta
Order: Diptera
Habitat: Woodland
Scientific name: Idiochaeta fusca
Name: Idiocnemus
Order: Coleoptera
Habitat: Forests
Scientific name: Idiocnemus spp.
Name: Idiocottus
Order: Coleoptera
Habitat: Marine
Scientific name: Idiocottus borealis
Name: Idiogenes
Order: Coleoptera
Habitat: Desert
Scientific name: Idiogenes honorei
Name: Idioglochis
Order: Coleoptera
Habitat: Forests
Scientific name: Idioglochis
Name: Idiogomphus
Order: Odonata
Habitat: Streams and rivers
Scientific name: Idiogomphus spp.
Name: Idiophlebia
Order: Odonata
Habitat: Freshwater
Scientific name: Idiophlebia
Name: Idiops
Order: Araneae
Habitat: Arid
Scientific name: Idiops syriacus
Name: Idiopsocus
Order: Psocoptera
Habitat: Forests
Scientific name: Idiopsocus spp.
Name: Idiosemus
Order: Coleoptera
Habitat: Deserts
Scientific name: Idiosemus spp.
Name: Idiosepius
Order: Cephalopoda
Habitat: Marine
Scientific name: Idiosepius
Name: Idiostatus
Order: Orthoptera
Habitat: Grasslands
Scientific name: Idiostatus spp.
Name: Idiostatus californicus
Order: Orthoptera
Habitat: Arid
Scientific name: Idiostatus californicus
Name: Idiostolus
Order: Coleoptera
Habitat: Forests
Scientific name: Idiostolus
Name: Idiotermes
Order: Isoptera
Habitat: Tropical
Scientific name: Idiotermes banksi
Name: Idiotrochus
Order: Coleoptera
Habitat: Forests
Scientific name: Idiotrochus
Name: Idiotropus
Order: Coleoptera
Habitat: Forests
Scientific name: Idiotropus hirsutus
Name: Idiozancla
Order: Lepidoptera
Habitat: Grasslands
Scientific name: Idiozancla
Name: Idiozetes
Order: Acari
Habitat: Soil
Scientific name: Idiozetes spp.
Name: Idolomorpha
Order: Mantodea
Habitat: Tropical forests
Scientific name: Idolomorpha gabonicola
Name: Idolomorpha alata
Order: Mantodea
Habitat: Tropical
Scientific name: Idolomorpha alata
Name: Idolothrips
Order: Thysanoptera
Habitat: Worldwide
Scientific name: Idolothrips
Name: Idoneuma
Order: Coleoptera
Habitat: Grasslands
Scientific name: Idoneuma
Name: Ieana
Order: Lepidoptera
Habitat: Wetlands
Scientific name: Ieana spp.
Name: Ieana marginata
Order: Coleoptera
Habitat: Tropical
Scientific name: Ieana marginata
Name: Iethira
Order: Diptera
Habitat: Aquatic
Scientific name: Iethira
Name: Igerna
Order: Lepidoptera
Habitat: Forests
Scientific name: Igerna
Name: Ignacia
Order: Orthoptera
Habitat: Grasslands
Scientific name: Ignacia spp.
Name: Ignelater
Order: Coleoptera
Habitat: Forests
Scientific name: Ignelater spp.
Name: Igorodes
Order: Coleoptera
Habitat: Caves
Scientific name: Igorodes cavernicola
Name: Iheringia
Order: Coleoptera
Habitat: Tropical
Scientific name: Iheringia costulata
Name: Ihlara
Order: Coleoptera
Habitat: Arid
Scientific name: Ihlara
Name: Ihleus
Order: Coleoptera
Habitat: Arid
Scientific name: Ihleus
Name: Ikanothrips
Order: Thysanoptera
Habitat: Tropical forests
Scientific name: Ikanothrips breviceps
Name: Ikaros
Order: Lepidoptera
Habitat: Grassland
Scientific name: Ikaros
Name: Ikonnikovia
Order: Orthoptera
Habitat: Grassland
Scientific name: Ikonnikovia portschinskyi
Name: Ikrima
Order: Lepidoptera
Habitat: Tropical forests
Scientific name: Ikrima
Name: Ilema
Order: Lepidoptera
Habitat: Forests
Scientific name: Ilema spp.
Name: Ilemorpha
Order: Coleoptera
Habitat: Tropical forests
Scientific name: Ilemorpha
Name: Ilhella
Order: Coleoptera
Habitat: Caves
Scientific name: Ilhella cavernicola
Name: Iliau
Order: Coleoptera
Habitat: Forests
Scientific name: Iliau spp.
Name: Ilidoma
Order: Diptera
Habitat: Wetlands
Scientific name: Ilidoma spp.
Name: Iliodes
Order: Coleoptera
Habitat: Forests
Scientific name: Iliodes spp.
Name: Ilisia
Order: Diptera
Habitat: Streams and rivers
Scientific name: Ilisia spp.
Name: Iliu
Order: Lepidoptera
Habitat: Tropical forests
Scientific name: Iliu plumbea
Name: Illaphanus
Order: Coleoptera
Habitat: Forest
Scientific name: Illaphanus
Name: Illia
Order: Lepidoptera
Habitat: Grasslands
Scientific name: Illia spp.
Name: Illinoia
Order: Hemiptera
Habitat: Deciduous forests
Scientific name: Illinoia
Name: Illinoia liriodendri
Order: Hemiptera
Habitat: Forest
Scientific name: Illinoia liriodendri
Name: Illis
Order: Coleoptera
Habitat: Grasslands
Scientific name: Illis laticollis
Name: Illisia
Order: Diptera
Habitat: Wetlands
Scientific name: Illisia spp.
Name: Illocharis
Order: Coleoptera
Habitat: Forest
Scientific name: Illocharis
Name: Illoma
Order: Coleoptera
Habitat: Forest
Scientific name: Illoma
Name: Ilma
Order: Lepidoptera
Habitat: Grasslands
Scientific name: Ilma flava
Name: Ilocano
Order: Orthoptera
Habitat: Tropical forests
Scientific name: Ilocano montanus
Name: Iloma
Order: Coleoptera
Habitat: Forest
Scientific name: Iloma
Name: Ilsaea
Order: Coleoptera
Habitat: Tropical forests
Scientific name: Ilsaea
Name: Ilyella
Order: Coleoptera
Habitat: Caves
Scientific name: Ilyella cavernicola
Name: Imaizumia
Order: Lepidoptera
Habitat: Grassland
Scientific name: Imaizumia
Name: Imalades
Order: Coleoptera
Habitat: Deserts
Scientific name: Imalades spp.
Name: Imanthripa
Order: Lepidoptera
Habitat: Tropical forests
Scientific name: Imanthripa
Name: Imatra
Order: Coleoptera
Habitat: Forests
Scientific name: Imatra reticulata
Name: Imbrina
Order: Lepidoptera
Habitat: Forests
Scientific name: Imbrina spp.
Name: Imeria
Order: Hemiptera
Habitat: Grasslands
Scientific name: Imeria
Name: Imhoffia
Order: Lepidoptera
Habitat: Forest
Scientific name: Imhoffia
Name: Imhoffina
Order: Coleoptera
Habitat: Aquatic
Scientific name: Imhoffina
Name: Imitator
Order: Orthoptera
Habitat: Tropical forests
Scientific name: Imitator
Name: Imocharis
Order: Coleoptera
Habitat: Forest
Scientific name: Imocharis
Name: Imperiepes
Order: Orthoptera
Habitat: Grasslands
Scientific name: Imperiepes spp.
Name: Imperilua
Order: Lepidoptera
Habitat: Grasslands
Scientific name: Imperilua flava
Name: Inantis
Order: Odonata
Habitat: Wetlands
Scientific name: Inantis
Name: Incabus
Order: Coleoptera
Habitat: Forest
Scientific name: Incabus
Name: Incarum
Order: Coleoptera
Habitat: Caves
Scientific name: Incarum spp.
Name: Incisitermes
Order: Isoptera
Habitat: Forest
Scientific name: Incisitermes
Name: Incorodrilus
Order: Coleoptera
Habitat: Aquatic
Scientific name: Incorodrilus
Name: Indapama
Order: Lepidoptera
Habitat: Tropical forests
Scientific name: Indapama plumbea
Name: Indigofera
Order: Lepidoptera
Habitat: Grasslands
Scientific name: Indigofera flava
Name: Indinoma
Order: Coleoptera
Habitat: Forest
Scientific name: Indinoma
Name: Indosus
Order: Coleoptera
Habitat: Grassland
Scientific name: Indosus
Name: Infantirhynchus
Order: Coleoptera
Habitat: Aquatic
Scientific name: Infantirhynchus
Name: Infernarubicus
Order: Coleoptera
Habitat: Arid
Scientific name: Infernarubicus
Name: Inferniella
Order: Lepidoptera
Habitat: Forest
Scientific name: Inferniella
Name: Inflectocoris
Order: Hemiptera
Habitat: Grassland
Scientific name: Inflectocoris
Name: Infumata
Order: Orthoptera
Habitat: Grassland
Scientific name: Infumata
Name: Inglisiana
Order: Orthoptera
Habitat: Grassland
Scientific name: Inglisiana
Name: Ingricia
Order: Lepidoptera
Habitat: Forest
Scientific name: Ingricia
Name: Ingrisia
Order: Coleoptera
Habitat: Forest
Scientific name: Ingrisia
Name: Inimica
Order: Coleoptera
Habitat: Aquatic
Scientific name: Inimica
Name: Inopinatus
Order: Coleoptera
Habitat: Forest
Scientific name: Inopinatus
Name: Inouyea
Order: Coleoptera
Habitat: Arid
Scientific name: Inouyea
Name: Inpensa
Order: Lepidoptera
Habitat: Grassland
Scientific name: Inpensa
Name: Inquilinus
Order: Coleoptera
Habitat: Caves
Scientific name: Inquilinus cavernicola
Name: Insecta
Order: Insecta
Habitat: Various
Scientific name: Insecta
Name: Institor
Order: Coleoptera
Habitat: Forest
Scientific name: Institor
Name: Interpositus
Order: Coleoptera
Habitat: Forest
Scientific name: Interpositus
Name: Intralobata
Order: Orthoptera
Habitat: Grassland
Scientific name: Intralobata
Name: Intratus
Order: Coleoptera
Habitat: Forest
Scientific name: Intratus
Name: Intricata
Order: Orthoptera
Habitat: Grassland
Scientific name: Intricata
Name: Intricus
Order: Coleoptera
Habitat: Forest
Scientific name: Intricus
Name: Inurus
Order: Coleoptera
Habitat: Forest
Scientific name: Inurus
Name: Iodes
Order: Coleoptera
Habitat: Aquatic
Scientific name: Iodes
Name: Iogaster
Order: Coleoptera
Habitat: Grasslands
Scientific name: Iogaster laticollis
Name: Iphicrates
Order: Coleoptera
Habitat: Forests
Scientific name: Iphicrates reticulata
Name: Iphinoe
Order: Lepidoptera
Habitat: Forest
Scientific name: Iphinoe
Name: Ipochus
Order: Coleoptera
Habitat: Caves
Scientific name: Ipochus cavernicola
Name: Ipolus
Order: Coleoptera
Habitat: Grasslands
Scientific name: Ipolus laticollis
Name: Ipomoea
Order: Lepidoptera
Habitat: Grassland
Scientific name: Ipomoea
Name: Ipothauma
Order: Lepidoptera
Habitat: Forest
Scientific name: Ipothauma
Name: Ipovidua
Order: Lepidoptera
Habitat: Forest
Scientific name: Ipovidua
Name: Iprimorpha
Order: Lepidoptera
Habitat: Forests
Scientific name: Iprimorpha reticulata
Name: Ips
Order: Coleoptera
Habitat: Coniferous forests
Scientific name: Ips
Name: Iramba
Order: Lepidoptera
Habitat: Grassland
Scientific name: Iramba
Name: Irene
Order: Odonata
Habitat: Wetlands
Scientific name: Irene foliacea
Name: Iriania
Order: Lepidoptera
Habitat: Grassland
Scientific name: Iriania
Name: Irianka
Order: Lepidoptera
Habitat: Grasslands
Scientific name: Irianka flava
Name: Iricta
Order: Orthoptera
Habitat: Grassland
Scientific name: Iricta
Name: Iridana
Order: Lepidoptera
Habitat: Forest
Scientific name: Iridana
Name: Iridea
Order: Lepidoptera
Habitat: Forest
Scientific name: Iridea
Name: Iridiscens
Order: Coleoptera
Habitat: Forest
Scientific name: Iridiscens
Name: Iridomyrmex
Order: Hymenoptera
Habitat: Worldwide
Scientific name: Iridomyrmex
Name: Iridotaenia
Order: Coleoptera
Habitat: Forest
Scientific name: Iridotaenia
Name: Irinae
Order: Coleoptera
Habitat: Forest
Scientific name: Irinae
Name: Irinaea
Order: Lepidoptera
Habitat: Forest
Scientific name: Irinaea
Name: Iris oratoria
Order: Mantodea
Habitat: Grassland
Scientific name: Iris oratoria
Name: Iris splendens
Order: Odonata
Habitat: Wetlands
Scientific name: Iris splendens
Name: Irisa
Order: Lepidoptera
Habitat: Forest
Scientific name: Irisa
Name: Iritis
Order: Lepidoptera
Habitat: Forest
Scientific name: Iritis
Name: Irulia
Order: Lepidoptera
Habitat: Forest
Scientific name: Irulia
Name: Isacea
Order: Lepidoptera
Habitat: Forest
Scientific name: Isacea
Name: Isanthrene
Order: Lepidoptera
Habitat: Tropical forests
Scientific name: Isanthrene plumbea
Name: Ischnaphis
Order: Hemiptera
Habitat: Forest
Scientific name: Ischnaphis
Name: Ischnocerus
Order: Coleoptera
Habitat: Forest
Scientific name: Ischnocerus
Name: Ischnoptera
Order: Blattodea
Habitat: Forest
Scientific name: Ischnoptera
Name: Ischnoptila
Order: Lepidoptera
Habitat: Forest
Scientific name: Ischnoptila
Name: Ischnura
Order: Odonata
Habitat: Freshwater
Scientific name: Ischnura
Name: Iselma
Order: Coleoptera
Habitat: Arid
Scientific name: Iselma
Name: Isidora
Order: Lepidoptera
Habitat: Forest
Scientific name: Isidora
Name: Isocampta
Order: Lepidoptera
Habitat: Forest
Scientific name: Isocampta
Name: Isocera
Order: Diptera
Habitat: Forests
Scientific name: Isocera sororcula
Name: Isocolpia
Order: Lepidoptera
Habitat: Forest
Scientific name: Isocolpia
Name: Isolda
Order: Coleoptera
Habitat: Forest
Scientific name: Isolda
Name: Isonychia
Order: Ephemeroptera
Habitat: Streams and rivers
Scientific name: Isonychia
Name: Isophya
Order: Orthoptera
Habitat: Grasslands
Scientific name: Isophya camptoxypha
Name: Isotoma
Order: Collembola
Habitat: Soil
Scientific name: Isotoma viridis
| Name | Order | Habitat | Scientific name |
|---|---|---|---|
| Iaspis flavescens | Hymenoptera | Forests | Iaspis flavescens |
| Icaricia icarioides | Lepidoptera | Grasslands | Icaricia icarioides |
| Icarus Blue | Lepidoptera | Grasslands | Polyommatus icarus |
| Icerya purchasi | Hemiptera | Plants | Icerya purchasi |
| Ichneumon fly | Hymenoptera | Worldwide | Ichneumonidae |
| Ichneumon nigriceps | Hymenoptera | Forest | Ichneumon nigriceps |
| Ichneutica ceraunias | Lepidoptera | Grasslands | Ichneutica ceraunias |
| Ichnoptera | Orthoptera | Grassland | Ichnoptera borealis |
| Ichthyiurinae | Coleoptera | Aquatic | Ichthyiurinae |
| Ichthyoderma | Coleoptera | Aquatic | Ichthyoderma |
| Ichthyura inclusa | Lepidoptera | Deciduous forests | Ichthyura inclusa |
| Icius | Araneae | Urban | Icius hamatus |
| Icterica | Diptera | Forests | Icterica sororcula |
| Icterus Beetle | Coleoptera | Forests | Icterus icterus |
| Icthyurodes | Coleoptera | Aquatic | Icthyurodes |
| Ictinia mississippiensis | Odonata | Wetlands | Ictinia mississippiensis |
| Idaea sericeata | Lepidoptera | Woodland | Idaea sericeata |
| Idana marginata | Diptera | Forests | Idana marginata |
| Idiasta | Hymenoptera | Forests | Idiasta |
| Idiasta scitula | Hymenoptera | Grassland | Idiasta scitula |
| Idiocerus | Hemiptera | Trees | Idiocerus |
| Idiochaeta | Diptera | Woodland | Idiochaeta fusca |
| Idiocnemus | Coleoptera | Forests | Idiocnemus spp. |
| Idiocottus | Coleoptera | Marine | Idiocottus borealis |
| Idiogenes | Coleoptera | Desert | Idiogenes honorei |
| Idioglochis | Coleoptera | Forests | Idioglochis |
| Idiogomphus | Odonata | Streams and rivers | Idiogomphus spp. |
| Idiophlebia | Odonata | Freshwater | Idiophlebia |
| Idiops | Araneae | Arid | Idiops syriacus |
| Idiopsocus | Psocoptera | Forests | Idiopsocus spp. |
| Idiosemus | Coleoptera | Deserts | Idiosemus spp. |
| Idiosepius | Cephalopoda | Marine | Idiosepius |
| Idiostatus | Orthoptera | Grasslands | Idiostatus spp. |
| Idiostatus californicus | Orthoptera | Arid | Idiostatus californicus |
| Idiostolus | Coleoptera | Forests | Idiostolus |
| Idiotermes | Isoptera | Tropical | Idiotermes banksi |
| Idiotrochus | Coleoptera | Forests | Idiotrochus |
| Idiotropus | Coleoptera | Forests | Idiotropus hirsutus |
| Idiozancla | Lepidoptera | Grasslands | Idiozancla |
| Idiozetes | Acari | Soil | Idiozetes spp. |
| Idolomorpha | Mantodea | Tropical forests | Idolomorpha gabonicola |
| Idolomorpha alata | Mantodea | Tropical | Idolomorpha alata |
| Idolothrips | Thysanoptera | Worldwide | Idolothrips |
| Idoneuma | Coleoptera | Grasslands | Idoneuma |
| Ieana | Lepidoptera | Wetlands | Ieana spp. |
| Ieana marginata | Coleoptera | Tropical | Ieana marginata |
| Iethira | Diptera | Aquatic | Iethira |
| Igerna | Lepidoptera | Forests | Igerna |
| Ignacia | Orthoptera | Grasslands | Ignacia spp. |
| Ignelater | Coleoptera | Forests | Ignelater spp. |
| Igorodes | Coleoptera | Caves | Igorodes cavernicola |
| Iheringia | Coleoptera | Tropical | Iheringia costulata |
| Ihlara | Coleoptera | Arid | Ihlara |
| Ihleus | Coleoptera | Arid | Ihleus |
| Ikanothrips | Thysanoptera | Tropical forests | Ikanothrips breviceps |
| Ikaros | Lepidoptera | Grassland | Ikaros |
| Ikonnikovia | Orthoptera | Grassland | Ikonnikovia portschinskyi |
| Ikrima | Lepidoptera | Tropical forests | Ikrima |
| Ilema | Lepidoptera | Forests | Ilema spp. |
| Ilemorpha | Coleoptera | Tropical forests | Ilemorpha |
| Ilhella | Coleoptera | Caves | Ilhella cavernicola |
| Iliau | Coleoptera | Forests | Iliau spp. |
| Ilidoma | Diptera | Wetlands | Ilidoma spp. |
| Iliodes | Coleoptera | Forests | Iliodes spp. |
| Ilisia | Diptera | Streams and rivers | Ilisia spp. |
| Iliu | Lepidoptera | Tropical forests | Iliu plumbea |
| Illaphanus | Coleoptera | Forest | Illaphanus |
| Illia | Lepidoptera | Grasslands | Illia spp. |
| Illinoia | Hemiptera | Deciduous forests | Illinoia |
| Illinoia liriodendri | Hemiptera | Forest | Illinoia liriodendri |
| Illis | Coleoptera | Grasslands | Illis laticollis |
| Illisia | Diptera | Wetlands | Illisia spp. |
| Illocharis | Coleoptera | Forest | Illocharis |
| Illoma | Coleoptera | Forest | Illoma |
| Ilma | Lepidoptera | Grasslands | Ilma flava |
| Ilocano | Orthoptera | Tropical forests | Ilocano montanus |
| Iloma | Coleoptera | Forest | Iloma |
| Ilsaea | Coleoptera | Tropical forests | Ilsaea |
| Ilyella | Coleoptera | Caves | Ilyella cavernicola |
| Imaizumia | Lepidoptera | Grassland | Imaizumia |
| Imalades | Coleoptera | Deserts | Imalades spp. |
| Imanthripa | Lepidoptera | Tropical forests | Imanthripa |
| Imatra | Coleoptera | Forests | Imatra reticulata |
| Imbrina | Lepidoptera | Forests | Imbrina spp. |
| Imeria | Hemiptera | Grasslands | Imeria |
| Imhoffia | Lepidoptera | Forest | Imhoffia |
| Imhoffina | Coleoptera | Aquatic | Imhoffina |
| Imitator | Orthoptera | Tropical forests | Imitator |
| Imocharis | Coleoptera | Forest | Imocharis |
| Imperiepes | Orthoptera | Grasslands | Imperiepes spp. |
| Imperilua | Lepidoptera | Grasslands | Imperilua flava |
| Inantis | Odonata | Wetlands | Inantis |
| Incabus | Coleoptera | Forest | Incabus |
| Incarum | Coleoptera | Caves | Incarum spp. |
| Incisitermes | Isoptera | Forest | Incisitermes |
| Incorodrilus | Coleoptera | Aquatic | Incorodrilus |
| Indapama | Lepidoptera | Tropical forests | Indapama plumbea |
| Indigofera | Lepidoptera | Grasslands | Indigofera flava |
| Indinoma | Coleoptera | Forest | Indinoma |
| Indosus | Coleoptera | Grassland | Indosus |
| Infantirhynchus | Coleoptera | Aquatic | Infantirhynchus |
| Infernarubicus | Coleoptera | Arid | Infernarubicus |
| Inferniella | Lepidoptera | Forest | Inferniella |
| Inflectocoris | Hemiptera | Grassland | Inflectocoris |
| Infumata | Orthoptera | Grassland | Infumata |
| Inglisiana | Orthoptera | Grassland | Inglisiana |
| Ingricia | Lepidoptera | Forest | Ingricia |
| Ingrisia | Coleoptera | Forest | Ingrisia |
| Inimica | Coleoptera | Aquatic | Inimica |
| Inopinatus | Coleoptera | Forest | Inopinatus |
| Inouyea | Coleoptera | Arid | Inouyea |
| Inpensa | Lepidoptera | Grassland | Inpensa |
| Inquilinus | Coleoptera | Caves | Inquilinus cavernicola |
| Insecta | Insecta | Various | Insecta |
| Institor | Coleoptera | Forest | Institor |
| Interpositus | Coleoptera | Forest | Interpositus |
| Intralobata | Orthoptera | Grassland | Intralobata |
| Intratus | Coleoptera | Forest | Intratus |
| Intricata | Orthoptera | Grassland | Intricata |
| Intricus | Coleoptera | Forest | Intricus |
| Inurus | Coleoptera | Forest | Inurus |
| Iodes | Coleoptera | Aquatic | Iodes |
| Iogaster | Coleoptera | Grasslands | Iogaster laticollis |
| Iphicrates | Coleoptera | Forests | Iphicrates reticulata |
| Iphinoe | Lepidoptera | Forest | Iphinoe |
| Ipochus | Coleoptera | Caves | Ipochus cavernicola |
| Ipolus | Coleoptera | Grasslands | Ipolus laticollis |
| Ipomoea | Lepidoptera | Grassland | Ipomoea |
| Ipothauma | Lepidoptera | Forest | Ipothauma |
| Ipovidua | Lepidoptera | Forest | Ipovidua |
| Iprimorpha | Lepidoptera | Forests | Iprimorpha reticulata |
| Ips | Coleoptera | Coniferous forests | Ips |
| Iramba | Lepidoptera | Grassland | Iramba |
| Irene | Odonata | Wetlands | Irene foliacea |
| Iriania | Lepidoptera | Grassland | Iriania |
| Irianka | Lepidoptera | Grasslands | Irianka flava |
| Iricta | Orthoptera | Grassland | Iricta |
| Iridana | Lepidoptera | Forest | Iridana |
| Iridea | Lepidoptera | Forest | Iridea |
| Iridiscens | Coleoptera | Forest | Iridiscens |
| Iridomyrmex | Hymenoptera | Worldwide | Iridomyrmex |
| Iridotaenia | Coleoptera | Forest | Iridotaenia |
| Irinae | Coleoptera | Forest | Irinae |
| Irinaea | Lepidoptera | Forest | Irinaea |
| Iris oratoria | Mantodea | Grassland | Iris oratoria |
| Iris splendens | Odonata | Wetlands | Iris splendens |
| Irisa | Lepidoptera | Forest | Irisa |
| Iritis | Lepidoptera | Forest | Iritis |
| Irulia | Lepidoptera | Forest | Irulia |
| Isacea | Lepidoptera | Forest | Isacea |
| Isanthrene | Lepidoptera | Tropical forests | Isanthrene plumbea |
| Ischnaphis | Hemiptera | Forest | Ischnaphis |
| Ischnocerus | Coleoptera | Forest | Ischnocerus |
| Ischnoptera | Blattodea | Forest | Ischnoptera |
| Ischnoptila | Lepidoptera | Forest | Ischnoptila |
| Ischnura | Odonata | Freshwater | Ischnura |
| Iselma | Coleoptera | Arid | Iselma |
| Isidora | Lepidoptera | Forest | Isidora |
| Isocampta | Lepidoptera | Forest | Isocampta |
| Isocera | Diptera | Forests | Isocera sororcula |
| Isocolpia | Lepidoptera | Forest | Isocolpia |
| Isolda | Coleoptera | Forest | Isolda |
| Isonychia | Ephemeroptera | Streams and rivers | Isonychia |
| Isophya | Orthoptera | Grasslands | Isophya camptoxypha |
| Isotoma | Collembola | Soil | Isotoma viridis |