Dryadula phaetusaMargarita Beltrán and Andrew V. Z. Brower
A monotypic genus distributed throughout the continental neotropics. The genus is recognized by having shorter and broader wings than other heliconiines, comparatively short antennae, and an androconical patch in the males.
Early stages: Eggs are yellow and approximately 1.7 x 1.1 mm (h x w). Females place eggs singly mostly on leaves, and on the base of the stem of the host plant (Brown, 1981). The larvae are almost unicolored, spiny and gregarious feeders. Mature larvae are dull purple with many short bristly spines; head capsule dark purple with two semi-knobbed head horns (DeVries, 1997).
Dryadula is an inhabitant of disturbed areas in the lowlands, and it is hardly ever found in association with forest and occurs infrequently from sea level to 1,200 m. Sporadically found to roost gregariously at night (DeVries, 1981).
Hostplant: Dryadula larvae feed primarily on plants from the subgenus Distephana and Granadilla (Passifloraceae)(Brown, 1981). In Costa Rica larvae feed on Passiflora talamacensis (Passifloraceae) (DeVries, 1997).
Brown K. S. 1981 The Biology of Heliconius and Related Genera. Annual Review of Entomology 26, 427-456.
DeVries P. J. 1997 The Butterflies of Costa Rica and Their Natural History, Volume I: Papilionidae, Pieridae, Nymphalidae Princeton University Press, Baskerville, USA.
Michener CD. 1942. A generic revision of the Heliconiinae (Lepidoptera, Nymphalidae). Amer. Mus. Novit. 1197: 1-8.
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University of Cambridge, Cambridge, UK
Middle Tennessee State University, Murfreesboro, Tennessee, USA
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- First online 21 February 2007
- Content changed 04 September 2008
Citing this page:
Beltrán, Margarita and Andrew V. Z. Brower. 2008. Dryadula http://tolweb.org/Dryadula_phaetusa/70436/2008.09.04 in The Tree of Life Web Project, http://tolweb.org/. Dryadula phaetusa . Version 04 September 2008 (under construction).