Melissodes illatus

Lovell & Cockerell, 1906

Valiant Long-horned Bee

Melissodes illatus is a of long-horned bee in the Apidae, commonly known as the Valiant Long-horned Bee. It belongs to a characterized by males with exceptionally long and territorial . Like other Melissodes species, it is a solitary ground-nesting and an important native . The species has been documented across North America, with observation records from regions including Vermont.

Pronunciation

How to pronounce Melissodes illatus: /mɛˈlɪsoʊdiːz ɪˈleɪtəs/

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Identification

Accurate identification to level requires examination, potentially including genitalia dissection or detailed morphological analysis. Males can be distinguished from females by their long and inability to sting. Differentiation from such as Melissodes agilis, M. robustior, and Svastra obliqua demands expertise in ; these species may co-occur and share similar size ranges and coloration patterns.

Habitat

Associated with open, sunny environments supporting flowering plants. Females require bare or sparsely vegetated soil for underground nest excavation. Males utilize elevated perches such as flower stems or twigs for overnight roosting .

Distribution

Documented from North America; specific records include Vermont, United States. Distribution likely broader but precise range boundaries require further survey.

Seasonality

activity period corresponds with bloom of preferred floral resources; males observed forming overnight sleeping clusters during active season, typically settling as evening light dims and departing after sunrise.

Diet

nectar and pollen forager; specific floral associations not documented for this but likely includes Asteraceae and other composite flowers based on -level patterns.

Life Cycle

Solitary ground-nesting with females excavating individual burrows. Development includes , larval, and pupal stages within nest provisioned with pollen and nectar. Males emerge and patrol floral territories; mating occurs at flowers or nest entrances. No social phase; each female independently provisions and seals her own nest.

Behavior

Males exhibit territorial defense of floral resources, dive-bombing intruding and other visitors to protect food sources for females. Males form overnight sleeping on elevated perches, jostling for position until settled. Females are non-aggressive and sting only if handled.

Ecological Role

Native contributing to of flowering plants. Ground-nesting activity may provide incidental soil aeration. Serves as prey for including crab spiders, praying mantids, and birds.

Human Relevance

Contributes to pollination services in gardens, agricultural settings, and natural areas. Non-aggressive; males cannot sting, making sleeping safe to observe. Inclusion in garden plantings supports conservation of native diversity.

Similar Taxa

Melissodes agilisCo-occurs in western North America; males share long- trait and overnight sleeping . Distinguished by subtle morphological differences requiring expert identification.
Melissodes robustiorSimilar size and coloration; males exhibit comparable territorial and roosting . Accurate separation requires detailed morphological or genitalic examination.
Svastra obliquaClosely related eucerine with overlapping range and ; males also sleep on flowers. Distinguished by antennal structure and body proportions.

More Details

Male sleeping aggregations

Males cluster on stems or flowers overnight, typically within 100 yards of female nesting areas but not directly adjacent. are single- and based on perch suitability rather than proximity to nests. Jostling for position occurs during settlement but individuals establish discrete sleeping spots.

Conservation status

Not formally assessed; like many native bees, likely vulnerable to loss, exposure, and competition from managed honey bees. Ground-nesting requirements make sensitive to soil disturbance and intensive ground cover.