Prodoxus quinquepunctella

Distinguished from true yucca moths (Tegeticula) by the absence of specialized tentacular mouthparts used for pollen collection. The five dark forewing spots separate it from other Prodoxus species with different spotting patterns. It can be confused with other small prodoxid moths; dissection or genitalia examination may be required for definitive identification. Larval presence is confirmed by exit holes in yucca fruit or stems.

Small moth with five distinct dark spots on the forewings, from which the common name derives. Adults have a wingspan of approximately 10–15 mm. Forewings are grayish-white with dark speckling; hindwings are narrower and paler. Antennae are simple and relatively short. Larvae are grub-like, creamy white, and develop within yucca inflorescences or stems.

Desert scrub, semi-arid grassland, openings in pine or deciduous forests, coastal chaparral, and sand dunes. Associated exclusively with yucca host plants (Yucca spp.).

Southern Alberta, Canada, southward through the western United States to the Mexican Plateau in northern Mexico. Records confirm presence in Alberta; distribution elsewhere is inferred from host plant range and collection records.

Adults have been observed from late spring through summer, with peak activity corresponding to yucca flowering periods. Exact timing varies with latitude and elevation.

Larvae feed internally on yucca tissues, including developing seeds, fruit walls, and stems. Adults do not feed; they lack functional mouthparts for nectar or pollen consumption.

• Yucca - obligate herbivoreSpecific host species not definitively documented; likely multiple Yucca species

Eggs are laid on or near yucca inflorescences. Larvae bore into yucca fruit or stems and feed internally, completing development within the host tissue. Pupation occurs in a silken cocoon, often within the yucca fruit or in soil. Adults emerge to mate; females oviposit on new yucca flowers. One generation per year in most of range; possibly partial second generation in southern populations.

Females locate yucca inflorescences by olfactory cues. Adults are nocturnal and attracted to light. Mating occurs near host plants. Unlike pollinator yucca moths, adults do not actively collect or transport pollen.

Specialist herbivore on yucca. Acts as a parasite on yucca reproductive tissues, potentially reducing seed set. Serves as prey for parasitoid wasps and other insectivores. Part of the obligate mutualism-parasitism complex involving yucca plants and their associated moth fauna.

No direct economic importance. Occasionally encountered by yucca horticulturists when larvae damage ornamental plants. Subject of ecological research on plant-insect coevolution and mutualism exploitation.

• Tegeticula spp.True yucca moths that actively pollinate yucca; distinguished by tentacular maxillary palps for pollen manipulation and generally different wing patterns
• Prodoxus coloradensisAnother bogus yucca moth; differs in forewing spot number and arrangement, and geographic distribution

• yucca moth
• bogus yucca moth
• specialist herbivore
• desert fauna
• North America
• Prodoxidae
• Yucca associate

• BugGuide
• GBIF taxonomy match
• iNaturalist taxon
• Catalogue of Life