Neotrombicula autumnalis

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Neotrombicula autumnalis
Scientific classification edit
Kingdom: Animalia
Phylum: Arthropoda
Subphylum: Chelicerata
Class: Arachnida
Order: Trombidiformes
Family: Trombiculidae
Genus: Neotrombicula
N. autumnalis
Binomial name
Neotrombicula autumnalis
(Shaw, 1790)
  • Acarus autumnalis G.K.Shaw, 1790
  • Trombicula autumnalis (Shaw)

Neotrombicula autumnalis, known as the harvest mite or autumn chigger, is a species of mite of the family Trombiculidae. Their larvae live parasitically; they infect all domestic mammals, humans, and some ground-nesting birds.[2]


The larvae are normally orange or red in color with six legs, but develop eight legs by nymph stage. The larvae are up to 0.2 mm (0.01 in) in size.[2][irrelevant citation] The adult mites are about 1 mm (0.04 in) long.[2]


The eggs are laid in damp soil. After hatching, the larvae climb blades of grass and wait for a potential host.[2] With their "blade-like chelicerae",[2] they attach themselves to the hosts and feed on their tissues. After sucking, which lasts several days,[2] they fall off and develop over three stages of nymph to adult mites.


  1. ^ "Neotrombicula autumnalis". Global Biodiversity Information Facility. Retrieved 19 June 2021.
  2. ^ a b c d e f Richard Wall & David Shearer (2001). "Trombiculidae". Veterinary Ectoparasites: Biology, Pathology, and Control (2nd ed.). John Wiley and Sons. pp. 47–48. ISBN 978-0-632-05618-7.