Question: Which species of perennial flowering plant in the spurge family is a feeding source for Achaea lienardi?

Context paragraphs:
Euphorbia helioscopia: Euphorbia helioscopia (sun spurge) is a species of flowering plant in the spurge family Euphorbiaceae.  It is a herbaceous annual plant, native to most of Europe, northern Africa, and eastward through most of Asia.

Euphorbia antisyphilitica: Euphorbia antisyphilitica is a species of flowering plant in the spurge family Euphorbiaceae.  It is native to the Trans-Pecos of Texas and southern New Mexico in the United States as well as Chihuahua, Coahuila, Hidalgo, and Querétaro in Mexico.  Common names include candelilla and wax plant, but the latter is more often applied to members of the unrelated genus "Hoya".  It is shrubby and has densely clustered, erect, essentially leafless stems that are covered in wax to prevent transpiration.

Croton nepetifolius: Croton nepetifolius (Croton nepetaefolius) is an aromatic species of flowering plant in the spurge family, Euphorbiaceae, that is native to northeastern Brazil.  It is commonly known as "marmeleiro vermelh" (red quince).  The plant has been used in folk medicine as a sedative, an orexigenic (appetite enhancer) and an antispasmodic (muscle contaction suppressor).

Euphorbia pubentissima: Euphorbia pubentissima, known by the common names false flowering spurge and southeastern flowering spurge, is a species of plant in the spurge family.  It is native to the Southeastern United States where it is found in areas of sandy, open woodlands.

Euphorbia griffithii: Euphorbia griffithii, the Griffith's spurge, is a species of flowering plant in the spurge family Euphorbiaceae, native to Bhutan, Tibet and south west China.  It is a spreading, rhizomatous herbaceous perennial growing to 90 cm , with many erect reddish stems and narrow dark green leaves with red central veins, turning red and yellow in autumn.  In summer it produces flowerheads (cyathia) of brilliant red and yellow.

Euphorbia mellifera: Euphorbia mellifera (canary spurge, honey spurge) is a species of flowering plant in the spurge family Euphorbiaceae, native to Madeira and the Canary islands.  It is an evergreen shrub growing to 2 m or more, with narrow leaves up to 20 cm long.  In spring it produces brown, honey-scented flowers.

Euphorbia milii: Euphorbia milii (crown of thorns, Christ plant, Christ thorn) is a species of flowering plant in the spurge family Euphorbiaciae, native to Madagascar.  The species name commemorates , once Governor of Réunion, who introduced the species to France in 1821.  It is suspected that the species was introduced to the Middle East in ancient times, and legend associates it with the crown of thorns worn by Christ.

Achaea lienardi: Achaea lienardi is a fruit piercing moth of the family Erebidae.  It is found in most countries in tropical Africa from Egypt to South Africa, including the islands of Madagascar, Réunion and Mauritius.  The larva may feed on various plants, belonging to the genera "Maerua", "Pappea", "Rhus", "Cirtus", "Schotia", "Sideroxylon", "Ptaeroxylon", "Acacia", "Allophylus", "Croton", "Pinus", "Ricinus" or "Scutia".

Ricinus: Ricinus communis, the castorbean or castor-oil-plant, is a species of perennial flowering plant in the spurge family, Euphorbiaceae.  It is the sole species in the monotypic genus, Ricinus, and subtribe, Ricininae.  The evolution of castor and its relation to other species are currently being studied using modern genetic tools.  It reproduces with a mixed pollination system which favors selfing by geitonogamy but at the same time can be an out-crosser by anemophily (wind pollination) or entomophily (insect pollination).

Euphorbia bombensis: Euphorbia bombensis, commonly called the Southern Seaside Spurge, is a species of flowering plant in the spurge family.  It found in warm coastal areas of North America, South America and the islands of the Caribbean.  In the Southeastern United States, its natural habitat is the open sands of dunes, preferring areas with little competition in areas behind the foredune.

Supporting paragraphs: Achaea lienardi Ricinus
Answer: Ricinus