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Subfamily Dolichoderinae

Subfamily Dolichoderinae. Compiled by Hilda Taylor. Genus Linepithema. Subfamily Dolichoderinae Descriptive Characteristic: Habitat: - Ants in this subfamily have reduced petiole, - All over the world the postpetiole is fused to the gaster

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Subfamily Dolichoderinae

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  1. Subfamily Dolichoderinae Compiled by Hilda Taylor Genus Linepithema • Subfamily Dolichoderinae • Descriptive Characteristic: Habitat: • - Ants in this subfamily have reduced petiole, - All over the world • the postpetiole is fused to the gaster • - Sting is vestigial or absent (not visible) • - Very strong scent • - Transverse cloacal orifice • Behavior: • - Aggressive, bite but do not sting

  2. Genus Azteca Worker Queen Gaster • Descriptive Characteristics: Habitat: • Only petiole is visible - Mexico - Arboreal (trees and branches) • - Medium size ants • Behavior: • - Aggressive, bite do not sting • - Run very fast • Note: When placed in alcohol, they curve their gaster above the mesosoma

  3. Propodeum has spines or angles Long skinny neck Genus Dolichoderus • Descriptive Characteristics: Habitat: • - Wide range in sizes - NE in US and Mexico (forest-like) • - Long neck - Trees, dead branches (~3/4” diam) and • - Propodeum has spines or angles and twigs • - Strong unpleasant scent - Distributed from lowlands to mountainous • regions • Behavior • - Very aggressive, bite cannot sting • - Run very fast

  4. Genus Dorymyrmex (Conomyrmex) • Descriptive Characteristics: Habitat: • Monomorphic - Common in disturbed areas • Unique conical projection on propodeum - Nest in soil, sand • Hairs under the head (used to haul sand) • Strong scent • Behavior: • - Run very fast (crazy little guys)

  5. Hairs in clypeus Genus Forelius • Descriptive Characteristics: Habitat: • Monomorphic - Occurs in xeric habitats from • Strong scent Great Lakes south in US and • Petiole node visible Mexico • Long hairs from clypeus extending over head - Common in urban habitats • and mandibles (longer than in Linepithema, spp) (disturbed habitats areas) • Behavior • - Aggressive

  6. Genus Linepithema (Iridomyrmex) • Descriptive Characteristics: Habitat: • - No hairs on alitrunk - Mesic and urban habitats • - Propodeum sticks up like a rectangular structure - Rare in xeric zones • above the mesonotum • Behavior: • - Aggressive • - Spray chemicals when threatened • (Solenopsis invicta cannot handle them)

  7. Genus Liometopum Alitrunk convex • Descriptive Characteristics: Habitat: • - Polymorphic - Western US and Mexico • - Eyes not on edges, they are near the middle - Oak forests • of the head • - Antennal origin is close to the clypeus • - Alitrunk is convex • - Strong scent • Behavior: • - Aggressive • Note: Very similar to Camponotus, spp, but it does not have a scent

  8. Genus Tapinoma Petiole Gaster overhangs the petiole • Descriptive Characteristics: Habitat: • Monomorphic - Southern Mexico • Petiole mode very low and anteriorly - Tempered zones, tropics • inclinded (appearing absent), often hidden - Common in wetter sites under • under gaster rocks. • - US ant is dark brown - Nest in dead branches, rotting • fallen trees, rotting stumps and in the soil. • - Common in houses • Behavior • - Aggressive • - Workers forage on trees, herbaceous plants • and below ground

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