Systematic Parasitology

, Volume 69, Issue 2, pp 145–153

Myrmeconema neotropicum n. g., n. sp., a new tetradonematid nematode parasitising South American populations of Cephalotes atratus (Hymenoptera: Formicidae), with the discovery of an apparent parasite-induced host morph


DOI: 10.1007/s11230-007-9125-3

Cite this article as:
Poinar, G. & Yanoviak, S.P. Syst Parasitol (2008) 69: 145. doi:10.1007/s11230-007-9125-3


A new genus and species of tetradonematid nematode, Myrmeconema neotropicum n. g., n. sp., is described from larval, pupal and adult stages of Cephalotes atratus L. (Hymenoptera: Formicidae) in Peru and Panama. Diagnostic characters of the new genus include: males and females subequal in size; cuticle with minute annulations; six cephalic papillae; stylet present in all stages; stichocytes absent; trophosome degenerate; three penetration glands; gonads paired and opposite; vulva in mid-body region; single spicule; genital papillae absent; adult tails rounded; infective juveniles moult once in egg; and adults of both sexes remain in the host throughout their development. As the female nematodes mature inside the worker ants, the host gasters change colour from black to red.

Copyright information

© Springer Science+Business Media B.V. 2007

Authors and Affiliations

  1. 1.Department of ZoologyOregon State UniversityCorvallisUSA
  2. 2.Medical Entomology LaboratoryUniversity of FloridaVero BeachUSA
  3. 3.Department of BiologyUniversity of Arkansas at Little RockLittle RockUSA