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Florilegus condignus (Cresson, 1878)


Scientific Name: Florilegus condignus (Cresson, 1878)

Common Name: Worthy Longhorn Bee


Melissodes condigna Cresson, 1878: 207 [♀].

     Lectotype ♀, designated by Cresson (1916: 116). USA, Kansas [ANSP no. 2318].

Melissodes palustris Robertson, 1892: 273 [♂]. Synonymy by Robertson (1898: 53).

     Lectotype ♂, designated by Cresson (1928: 69). USA, Illinois, Carlinville [5, 9 July and 5 August [no year], by C. Robertson, on Dianthera americana and Pontederia cordata] [ANSP no. 10130].

Tetralonia quadrata Bertoni and Schrottky, 1910: 572 [♀, ♂]. Synonymy by Urban (1970: 260).

     Lectotype ♂, designated by Urban (2004: 76). PARAGUAY, Encarnación, 4 December 1905, by C. Schrottky [MZSP].

Florilegus pavoninus Cockerell, 1914: 316 [♀, ♂]. Synonymy by Urban (1970: ).

     Holotype ♀. EQUADOR, Guayaquil, May-June 1913, by C.T. Brues [USNM no. 18392].

Florilegus barticanus Cockerell, 1918: 687, 690 [♂]. Synonymy by Urban (1970: 260).

     Type ♂. BRITISH GUIANA, Bartica District (Hym. 11) [AMNH no. AMNH_IZC 00323570].

Tetralonia ecuadoria Friese, 1923: 3 [♂, ♀]. Nomen nudum Synonymy by Urban (1970: 260).


Taxonomic notes: Urban (2004: 76) designated a lectotype male of Tetralonia quadrata Bertoni and Schrottky, 1910 from Encarnación, Paraguay and recorded the collection date as 4.II – 05 (i.e., 4 February 1905), though 4./12. 1905 (4 December 1905) was mentioned for specimens from Encarnación in the original work (Bertoni and Schrottky, 1910: 573).

When Cockerell (1914: 317) distinguished the male of his Florilegus pavoninus Cockerell, 1914 from P. condigna (Cresson, 1878) by the colour of the labrum, being nearly all yellow in Cresson’s species from the USA, or with at most a yellow spot in material from Equador, he indicated the the females of the two species were not similar. However, the former were subsequently placed into synonymy by Urban (1970: 260).

Though Florilegus barticanus Cockerell, 1918 was considered a valid species by Michener (1954: 136) and LaBerge and Ribble (1966: 945), the latter indicating that it differed mainly in the hair colour, Urban (1970: 260) considered it a synonym.

The name Tetralonia ecuadoria was first attributed to H. Friese (?i. litt.) in Bertoni and Schrottky (1910: 577) who briefly described it from six female specimens from Guauaquil, Ecuador and Callanga, Peru. Cockerell (1914: 319) later described the male from material also from Guauaquil and indicated that the species was named by Friese in manuscript, but first published with a brief description by Bertoni and Schrottky (1910). Friese (1923: 3) later referred to male and female specimens from Manaus (Amazonas) as Tetralonia equadoria;

J.S. Moure (see Urban 1970: 263) indicated that the name Melissodes equadoria was validated by Bertoni and Schrottky (1910), but its use refers to a species of Melissodes (Eplectica), and not a Florilegus, an opinion that was supported by Moure and Michener (1955). Thus, the use of Tetralonia ecuadoria by Friese (1923: 3) though in reference to this species, is considered nomen nudum; use of Melissodes ecuadoria by Cockerell (1914: 316), and Melissodes ecuadoria by Bertoni (1918: 213) are also in reference to this taxon (see Urban 1970: 260).

Parys et al. (2022) described a gynandromorph of this species.

DNA Barcode Index Number (BIN): BOLD:AAJ0379

Biology: LaBerge and Ribble (1966) described the nesting biology, including the mature larva and cocoon. Though considered an oligolege on pickerweed (Pontederia sp.) (), LaBerge and Ribble (1966) considered it polylectic but seemingly with a preference for Leguminosae, including alfala (Medicago sativa). It is also considered an important pollinator of watermelon (Citrullus lanatus) (Brewer 1974) and has been collected from several other plant species from several families (LaBerge and Ribble 1966; Parys et al. 2022), suggesting that the species is not as dietarily restricted.

Distribution in Canada: iNaturalist [ON]

The first record of this species in Canada was a single observation [] by iNaturalist user wowokayyes; user johnascher was the first to verify the identity of this record.




Robertson C (1892) Descriptions of new North American bees. American Naturalist 26: 267-274.

Robertson C (1898) New or little known North American bees. Transactions of the Academy of Sciences of St. Louis 8: 43-54.

Cresson ET (1916) The Cresson types of Hymenoptera. Memoirs of the American Entomological Society 1: 1-141.

Cresson ET (1878) Descriptions of new species of North American bees. Proceedings of the Academy of Natural Sciences of Philadelphia 30: 181-221.

Cresson ET (1928) The types of Hymenoptera in the Academy of Natural Sciences of Philadelphia other than those of Ezra T. Cresson. Memoirs of the American Entomological Society 5: 1-90.

Cockerell TDA (1914) Bees from Ecuador and Peru. Journal of the New York Entomological Society 22: 306-328.

Cockerell TDA (1918) Bees from British Guiana. Bulletin of the American Museum of Natural History 38(20): 685-705.

Parys KA, Davis KA, James ST, Davis JB, Tyler H, Griswold T (2022) First report of a gynandromorph of Florilegus condignus (Cresson, 1878) (Hymenoptera, Apidae), with notes on phenology and abundance. Journal of Hymenoptera Research 89: 233-244.

LaBerge WE, Ribble DW (1966) Biology of Florilegus condignus (Hymenoptera: Anthophoridae), with a description of its larva, and remarks on its importance in alfalfa pollination. Annals of the Entomological Society of America 59(5): 944-950.

Urban D (1970) As espécies do gênero Florilegus Robertson, 1900 (Hymenoptera, Apoidea). Boletim da Universidade Federal do Paraná, Zoologia 3(12): 245-280.

Brewer JW (1974) Pollination requirements for watermelon seed production. Journal of Apicultural Research 13: 207-212.

Urban D (2004) Designação de lectótipos e notas sobre material-tipo de Anthidiinae e Eucerinae (Hymenoptera, Apoidea). Acta Biológica Paranaense, Curitiba 29(1, 2, 3, 4): 71-88.

Michener CD (1954) Bees of Panamá. Bulletin of the American Museum of Natural History 104(1): 1-176.

Bertoni AW, Schrottky C (1910) Beitrag zur Kenntnis der mit Tetralonia verwandten Bien aus Südamerika. Zoologische Jahrbücher. Abteilung für Systematik, Geographie und Biologie der Tiere 39: 563-596.

Moure JS, Michener CD (1955) A contribution toward the classification of neotropical Eucerini (Hymenoptera, Apoidea). Dusenia 6: 239-331.

Sociality: Solitary
Nesting: Ground
Pollen Specialization: Polylectic

Crop Preference: Medicago sativa
Non Crop Preference: Pontederia cordata

Distribution: Ontario
Ecozone: Mixwood Plains

Distribution Map