Synonyms and other taxonomic changes
Danaus eresimus (Cramer)
Pap[ilio]. Dan[aus] Festiv[us]. Eresimus Cramer, [1777]
(2) usually cited as:
Papilio eresimus Cramer 1777
Explanation of Names
eresis - Greek for 'take'
(3)Identification
Dorsal, very similar to the
Queen, with slightly darker veins. Male has a black dot on each HW.
Ventral, black veins on both FW and HW,
Queen only has black veins on HW. Soldiers are the only one in the genus that has pale squarish spots forming a concentric postmedian band.
Range
mostly so. TX, so. FL / W. Indies / Mexico to Brazil -
Map (MPG)
(4)(5)
a few strays are reported north of their southern range each fall.
Habitat
Found in many different open areas with their host plant, nectar sources, or pyrrolizidine alkaloids.
Season
North to Orland in the summer, all year in south Florida with 3+ broods, most common October-December.
Food
Milkweeds A. curassavica, A. tomentosa, twinevines - Funastrum (=Sarcostemma) clausumi, Funastrum (=Sarcostemma) cynanchoides, Cynanchum racemosum and latexplant - Morrenia odorata (Asclepiadaceae)
"I've never had Soldiers oviposit on Tropical Milkweed, although larvae readily eat it. They typically oviposit on Cynanchum or Sarcostemma. (Dale Clark, pers. comm. to MAQ, 2013)
Remarks
Tropical species that began colonizing Florida in the 1970's. The Florida Soldiers come from an Antillean population, and the Texas Soldiers originated in Mexico.
In the summer, Soldiers sometimes stray north to NC.
Print References
Calhoun, J.V. 1996. Conquering soldiers: the successful invasion of Florida by Danaus eresimus (Lepidoptera: Nymphalidae). Holarctic Lepidoptera 3: 7-18.
Cramer, [1777]. Uitlandsche Kapellen (Papillons exotiques) Uitl. Kapellen 2 (9-16): 1-152.
Internet References
Soldier larvae - Dale Clark, Dallas County Lepidopterists' Society (DCLS)