Lasioglossum (Dialictus) parvum ( Cresson, 1865 )

Gibbs, Jason, 2018, Bees of the genus Lasioglossum (Hymenoptera: Halictidae) from Greater Puerto Rico, West Indies, European Journal of Taxonomy 400, pp. 1-57 : 49-50

Lasioglossum (Dialictus) parvum ( Cresson, 1865)

Panurgus? parvus Cresson, 1865: 175 . (lectotype, ♂, deposited in ANSP, designated by Cresson (1916), examined). [Label data: Cuba. // 95 // ♂ // LectoTYPE 2182.]

Panurgus parvus – Dewitz 1881: 197 (catalogue). — Gundlach 1887: 152 (distribution). — Dalla Torre 1896: 182 (catalogue). — Ashmead 1900: 303 (catalogue). — Gowdey 1926: 98 (checklist).

Halictus parvus – Cockerell 1898: 185 (taxonomy, characters); 1915: 9 (comparative taxonomy).

Panurgus? parvus – Friese 1902: 197 (catalogue).

Dialictus parvus – Cockerell 1904: 235 (taxonomic position). — Sandhouse 1923: 193 (catalogue). — Moure & Hurd 1987: 120. — Eickwort 1988: 236 (biology, distribution). — Engel 2000: 89 (phylogeny, outgroup). — Moure 2007: 853.

Chloralictus parvus – Baker 1906: 259 (taxonomic revision, misidentification in part).

Halictus (Chloralictus) parvus – Krombein 1953: 20 (distribution).

Lasioglossum parvum – Alayo 1973: 198; 1976: 18 (catalogue).

Lasioglossum parvus – Rodríguez Velázquez & Mestre Novoa 2002: 9 (checklist, incorrect spelling: gender disagreement).

Lasioglossum (Dialictus) parvus – Genaro 2004: 178 (distribution, incorrect spelling: gender disagreement).

Lasioglossum (Dialictus) parvum – Genaro 2007: 249 (distribution). — Gibbs 2010a: 2 (taxonomy). — Engel 2011: 66 (taxonomy).

Material examined

CUBA: “ Santa Clara ”: 1 ♀, [no locality], s. d., Baker leg. ( AMNH) . – Camaguey: 4 ♀♀, [no locality], Oct. 1950, N.L.H. Krauss leg. ( NMNH) . – Havana: 115 ♀♀, 85 ♂♂, s. d., Baker leg. ( AMNH) ; 7 ♂♂, Baker leg. (CUIC); 14 ♀♀, 1 ♂, Jan.–Feb. 1915, s. coll. (AMNH); 1 ♀, Jan.–Feb. 1915, s. coll. (NMNH); 1 ♀, Dec. 1955, N.L.H. Krauss leg. (SEMC). – Matanzas: 1 ♀, Abra Figueroa Yumuri Mts, Jun. 1970, s. coll. ( SEMC) ; 1 ♀, Playa Larga, Cienaga de Zapata , Jun. 1965, P. Alayo leg. ( SEMC) . – Pinar del Rio: 11 ♀♀, Guane, 1918, W.M. Mann leg. ( NMNH) ; 2 ♀♀, Guane, 24–26 Sep. 1913, s. coll. (AMNH); 1 ♀, La Palma, Nov. 1955, N.L.H. Krauss leg. (SEMC); 1 ♀, Mariel, Jun. 1968, P. Alayo leg. (SEMC); 1 ♀, Vinales, 7 km N, 16–22 Sep. 1913, s. coll. (AMNH); 3 ♀♀, Vinales, 7 km N, 20 Nov. 1913, s. coll. (AMNH); 1 ♂, Vinales, 14 km N, 20 Nov. 1913, s. coll. (AMNH); 2 ♂♂, Vinales, 24 km N, 16–22 Sep. 1913, s. coll. (AMNH) . – Sancti Spiritu : 1 ♀, Zaza del Medio, 30 Sep. 1913, s. coll. ( AMNH) . – Santiago De Cuba: 1 ♀, Cristo, 3 Oct. 1915, s. coll. ( AMNH) ; 1 ♀, Siboney, sea level, 11 Dec. 1995, L. Masner leg. (PCYU).

Distribution

Bahamas (North and South Bimini, San Salvador), Cayman Islands, Cuba ( Moure & Hurd 1987; Genaro 2007).

Remarks

The Lasioglossum parvum species group is widespread in the New World, and includes members of the L. tegulare species group ( Danforth 1999; Danforth et al. 2003; Gibbs 2009a; Gibbs et al. 2012b). The parvum group is common in the Greater Antilles. Lasioglossum busckiellum from Hispaniola (see above) and L. gemmatum ( Smith, 1853) from Jamaica (= L. bruesi ( Cockerell, 1912) syn. nov., = L. jamaicae ( Ellis, 1914) syn. nov.), L. monense sp. nov. and L. enatum sp. nov. all belong to this group. The name L. parvum has undoubtedly been applied too broadly in the past to include multiple species, probably including most of the above, as well as possibly undescribed species in this complex from Cuba, Jamaica and the Bahamas (Gibbs, unpublished data). Dewitz (1881) and Gundlach (1887) recorded it from Puerto Rico as Panurgus parvus , but the bee diversity of the region was not well known at that time. All specimens belonging to the parvum group examined from Puerto Rico were L. enatum sp. nov. or L. monense sp. nov. from Mona Island. Several specimens of the parvum group with two submarginal cells in at least one wing were examined from the Bahamas and Cayman Islands. Record details for these specimens are as follows:

BAHAMAS: Long Island: 1 ♀, Clarence Town , 13 Mar. 1953, L. Giovannoli leg. ( AMNH) . – San Salvador Island: 8 ♂♂, San Salvador, CCFL, 26 Jun. 1985, G.C. Eickwort leg. ( CUIC) .

CAYMAN ISLANDS: Grand Cayman: 2 ♀♀, West Bay, Town Hall Cresent [sic], blacklight trap, 21 Jul.–1 Aug. 1986, D. Gicca leg. ( NMNH).

The synonymy of the three species from Jamaica is based on an examination of the type series of each. The female of L. jamaicae is indistinguishable from that of L. gemmatum . The male holotype of L. bruesi is entirely pale, which is believed to be an artefact of preservation. It has identical collection information as the holotype of L. jamaicae and with exception of its colour matches male paratypes of that species.