Epigomphus tumefactus Calvert, 1903Gomphidae
Male
Female
Male
Female
MaleFemaleMaleFemale
Male
Male appendages, dorsal view
Male
Male appendages, lateral view
MaleMale appendages, dorsal viewMaleMale appendages, lateral view
Male
Female
MaleFemale

Male identification:

  • Thorax dorsum with one longitudinal line and a posterior spot.
  • Lower appendage shorter than upper.

Female identification:

  • Thorax dorsum dark brown with one longitudinal line and a posterior spot.
  • Pale stripe on mesepimeron incomplete, consisiting of a partial stripe and a posterior spot.
  • Two pairs of grooves on vertex behind ocelli.
  • Occipital ridge with a pair of peg-like tubercles extending backward from rear margin.

Size: Large

Body length: 48.0-51.0

Local distribution: Both slopes to 1200 m.

Habitat: Spring seeps and small streams in forest.

Species range in Middle America: Costa Rica

Male abdomen length: 39

Female abdomen length: 45

Female hindwing length: 38

Updated: 4 April 2008





Credits: Text and images copyright by William A. Haber, 2006-2011. Contact: argianegra@yahoo.com