Neolarra

Ashmead, 1890

Species Guides

Neolarra is a of minute cuckoo bees in the Apidae, containing approximately 16 described restricted to North America. These bees are kleptoparasites that target nests of Perdita bees, laying that hatch into larvae that consume the 's provisions and offspring. are exceptionally small, measuring less than a grain of rice. The genus was first described in 1890 by Ashmead, who initially misclassified it as a genus.

Neolarra by (c) William Harmon, some rights reserved (CC BY), uploaded by William Harmon. Used under a CC-BY license.

Neolarra congregata by the Smithsonian. Used under a CC0 license.

Pronunciation

How to pronounce Neolarra: //niːoʊˈlɑːrə//

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Identification

Distinguished from other cuckoo bees by its extremely small size and association with Perdita nests. Separation from other minute Nomadinae requires detailed examination; the genus Phileremulus was synonymized as a subgenus of Neolarra. Specific -level identification is challenging and may require specialized taxonomic expertise.

Images

Appearance

Extremely small bees, smaller than a grain of rice. Specific morphological details of are not well documented in available sources.

Habitat

Associated with the nesting sites of Perdita bees, which typically construct underground burrows in sandy or loose soils. Specific preferences of Neolarra itself are not independently documented.

Distribution

North America only. All approximately 16 described are restricted to this continent.

Seasonality

Activity patterns correspond to those of Perdita bees, which are typically active during spring and summer. Specific periods for Neolarra are not well documented.

Host Associations

Perdita - kleptoparasite laid in nests; larvae consume host egg and pollen provisions

Life Cycle

are inserted into walls of , likely while the host is absent. Larvae possess a hard, sickle-shaped tooth used to kill the host egg or larva. Developmental stages and details are not documented.

Behavior

Females enter nests during the host's absence to avoid detection. are concealed by insertion into walls rather than direct deposition on provisions. Larvae are aggressive that eliminate host offspring.

Ecological Role

of ground-nesting bees; are dependent on Perdita availability. Specific impacts on host or broader functions are not quantified.

Human Relevance

No documented direct economic or agricultural significance. Of interest primarily to taxonomists and students of parasitic bee .

Similar Taxa

NomadaBoth are cuckoo bees in Nomadinae, but Nomada are generally larger and parasitize different groups (primarily Andrena)
EpeolusAnother kleptoparasitic Nomadinae , but typically larger and with different associations (Colletes bees)

Misconceptions

Originally described by Ashmead in 1890 as a of rather than bees; this error was corrected by Baker in 1896.

More Details

Taxonomic history

The Phileremulus, erected in 1895 during the period when Neolarra was misclassified as , was revised by Charles Michener in 1939 to be a subgenus of Neolarra.