Lasioglossum (Dialictus) enatum

Gibbs, Jason, 2018, Bees of the genus Lasioglossum (Hymenoptera: Halictidae) from Greater Puerto Rico, West Indies, European Journal of Taxonomy 400, pp. 1-57: 17-23

publication ID

https://doi.org/10.5852/ejt.2018.400

publication LSID

lsid:zoobank.org:pub:EFE95F68-5FA1-4D95-A911-A8BCAFAFCEEF

persistent identifier

http://treatment.plazi.org/id/2D162288-635C-4D9C-9887-F1453F3F9EAE

taxon LSID

lsid:zoobank.org:act:2D162288-635C-4D9C-9887-F1453F3F9EAE

treatment provided by

Plazi

scientific name

Lasioglossum (Dialictus) enatum
status

sp. nov.

Lasioglossum (Dialictus) enatum  sp. nov.

urn:lsid:zoobank.org:act:2D162288-635C-4D9C-9887-F1453F3F9EAE

Figs 4DView Fig. 4, 9–11View Fig. 9View Fig. 10View Fig. 11

Diagnosis

Both sexes of Lasioglossum enatum  sp. nov. can be recognized by tegula punctate, extended posteriorly to form small angle, mesepisternum punctate and metasoma brown. The shape of the tegula distinguishes it from all other species of L. ( Dialictus  ) from Puerto Rico, except L. monense  sp. nov. on Mona Island. The female of L. monense  sp. nov. has a pale metasoma and obscure punctation on the supraclypeal area. The male of L. enatum  sp. nov. has the mesoscutum and mesepisternum more polished and shiny than in males of L. monense  sp. nov. Other members of the L. parvum  species complex, to which it belongs, share this character. In the female, the complete absence of punctures on the apical impressed margins distinguishes L. enatum  sp. nov. from L. parvum  and L. busckiellum  , which both have minute setose punctures in this area. In the male, the appressed sternal setae and dark tarsi distinguish L. enatum  sp. nov. from L. parvum  , which has sternal setae erect and tarsi pale.

Etymology

The specific epithet enatum  is a participle of the Latin enascor, meaning having sprouted or sprung forth.

Material examined

Holotype

PUERTO RICO: ♀, Cabo Rojo, Boqueron, 17°58.994′ N, 67°08.455′ W, Field House , ground bee bowl, 12–16 May 2014, S.G. Prado leg. ( JBWM). [Original label: USA, PR Boqueron N17°58.994′ W67°08.455′, Field House, ground bee bowl, 12–16 May 2014, S.G. Prado, #49 // HOLOTYPE Lasioglossum (Dialictus) enatum Gibbs.  ]GoogleMaps 

Paratypes

PUERTO RICO: Aguadilla: 1 ♂, [no locality], Jan. 1899, A. Busck leg. ( NMNH)  ; 1 ♀, Playa Bajuras, Jul. 1999, J.A. Genaro leg. (JAGC).  Añasco: 2 ♀♀, [no locality], 3 Jul. 1917, H. Morrison leg. ( NMNH)  . – Arecibo: 1 ♀, [no locality], ex Gundlachia corymbosa, 4 Oct. 1922, G.N. Wolcott leg. ( NMNH)  ; 1 ♀, [no locality], flowers in field, 19 Dec. 1933, Anderson and Mills leg. (NMNH)  . – Arroyo: 2 ♀♀, 2 ♂♂, [no locality], Feb. 1899, A. Busck leg. ( NMNH)  . – Barceloneta: 1 ♀, [no locality], ex Barbieria pinnata  , 21 Feb. 1933, Anderson, Faxon and Mills leg. ( NMNH)  ; 1 ♀, [no locality], ex rose flower, 15 Nov. 1932, Anderson, Mills and Faxon leg. (NMNH).  Bayamón: 1 ♂, Stanwood Grove, 26 Jun. 1917, H. Morrison leg. ( NMNH)  . – Cabo Rojo: 1 ♀, [no locality], Dec. 1960, R. Cotte leg. ( JAGC)  ; 3 ♀♀, 3 ♂♂, Balneario Boqueron, 4 May 1985, G.C. Eickwort leg. (CUIC)  ; 1 ♀, Boqueron, Cabo Rojo National Wildlife Refuge, USFWS, 17°58.816′ N, 67°10.231′ W, ground bee bowl, 27 May – 13 Jun. 2014, S.G. Prado leg. ( NCSU)GoogleMaps  ; 1 ♂, same locality as preceding, net, 3 Jun. 2014, S.G. Prado leg. ( NCSU)GoogleMaps  ; 5 ♀♀, Las Palmas, Field House, 17°58.994′ N, 67°08.455′ W, ground bee bowl, 12–16 May 2014, S.G. Prado leg. (JBWM);  1 ♀, same collection data as preceding, 6 Jun. 2014 (NCSU); 1 ♀, El Combate, Rta. 3301, 17°58′46′′ N, 67°11′37′′ W, 5 m, 29 Nov. 2008, Carpenter and Davidson leg. (AMNH)  . – Cayey: 1 ♀, Bo. Beatriz, 5 Nov. 1992, Snelling and Torres leg. ( LACM)  . – Cidra: 2 ♀♀, 2 ♂♂, Cayey, 4 mi. NE, 7 May 1985, G.C. Eickwort leg. ( CUIC)  ; 3 ♀♀, [no locality], ex cockscomb flower, 5 Aug. 1932, Anderson, Faxon and Mills leg. (NMNH)  ; 1 ♀, [no locality], ex asparagus flower, 5 Aug. 1932, Anderson, Faxon and Mills leg. (NMNH).  Corozal: 1 ♀, [no locality], 1 Jan. 1920, G.N. Wolcott leg. ( NMNH)  . – Culebra : 1 ♀, 1 ♂, Isla Culebra, Punta Flamenco, 7 Nov. 2008, J.A. Genaro leg. ( JAGC)  . – Guánica: 2 ♂♂, Rta. 333, 17°56′55′′ N, 66°52′36′′ W, 50 m, 27 Nov. 2008, Carpenter and Davidson leg. ( AMNH)GoogleMaps  ; 1 ♀, Guánica, Oct. 1997, J.A. Genaro leg. ( JAGC)  ; 1 ♂, Insular Forest , 29 Sep. 1945, J.A. Ramos leg. ( NMNH)  ; 3 ♂♂, Playa Tamarindo (Mpio. Guánica), 17.95° N, 66.88° W, 10 ft a.s.l., ex Heliotropium curassavicum  , 26 Sep. 1998, R.R. Snelling leg. ( LACM)GoogleMaps  ; 1 ♂, same collection data as preceding (LACM).  Guayanilla: 2 ♀♀, 1 ♂, Costa Sur, 8 Jun. 2007, J.A. Genaro leg. ( JAGC)  ; 6 ♀♀, 1 ♂, 8 Jun. 2007, J.A. Genaro leg. (JAGC);  2 ♀♀, Playa Ventana, Oct. 2008, J.A. Genaro leg. (JAGC);  1 ♀, Punta Verraco, 14 Nov. 2010, J.A. Genaro leg. (JAGC).  Humacao: 4 ♀♀, 4 ♂, Playa de Humacao, 11 May 1985, G.C. Eickwort leg. ( CUIC)  . – Isabela: 1 ♀, [no locality], ex Coriandrum sativum  , 7 Apr. 1948, L.F. Martorell leg. ( NMNH)  ; 1 ♂, [no locality], Nov. 1981, N. Semiday leg. (FSCA);  1 ♀, [no locality], 2–3 Feb. 1940, R.A. Maldonado leg. (JAGC);  1 ♀, [no locality], 24 Jan. 1971, L.J. Joly T. leg. (JAGC);  2 ♀♀, Punta Rosario, nr. Isabela, 14 Jan. 1963, P.J. Spangler leg. ( NMNH)  . – Lajas: 1 ♀, Cartagena Lagoon, Feb. 1935, [illegible] leg. ( NMNH)  ; 1 ♀, Laguna Cartagena, 1 mi. S of Llanos, 4 May 1985, G.C. Eickwort leg. (CUIC);  8 ♀♀, 1 ♂, Isla Maguey, Parguera, 19 Dec. 1962, P. Spangler leg. ( NMNH)  ; 2 ♀♀, 1 ♂, same collection data as preceding, 20 Dec. 1962 (NMNH).  Loíza: 1 ♀, B.[osque] Piñones, #74, 5 Nov. 1985, J. Torres leg. ( LACM)  ; 4 ♀♀, Isl. Juan Pérez , #106, 28 Jun. 1986, J. Torres leg. ( LACM)  . – Luquillo: 2 ♀♀, 2 ♂♂, Balneario de Luquillo, 9 May 1985, G.C. Eickwort leg. ( CUIC)  ; 1 ♀ 2 ♂♂, same collection data as preceding, 10 May 1985 (CUIC);  1 ♀, 4 ♂♂, same collection data as preceding, 13 May 1985 (CUIC);  2 ♀♀, 1 ♂, same collection data as preceding, 14 May 1985 (CUIC)  . – Maricao: 1 ♀, 5 ♂♂, Damiani, shade, 18°11.862′ N, 66°56.347′ W, net (9:50–11:50), 18 Jun. 2014, S.G. Prado leg. ( NCSU)GoogleMaps  . – Mayagüez: 2 ♀♀, 2 ♂♂, [no locality], Jan. 1899, A. Busck leg. ( NMNH)  ; 1 ♂, [no locality] (NMNH);  1 ♀, [no locality], 28 Aug. 1970, L.J. Joly T. leg. (JAGC).  Ponce: 2 ♀♀, 1 ♂, Cayo Ratones, May 1999, J.A. Genaro leg. ( JAGC)  ; 1 ♀, La Rita, near Ponce, Oct. 2010, J.A. Genaro leg. ( JAGC)  ; 1 ♀, same collection data as preceding, 14 May 2008 (JAGC);  1 ♂, same collection data as preceding, May 2008 (JAGC);  1 ♀, Playa El Tuque, 5 mi. W of Ponce, 4 May 1985, G.C. Eickwort leg. ( CUIC)  ; 1 ♀, same collection data as preceding, 5 May 1985 (CUIC);  1 ♀, Playa Guánica, Jul. 1999, J.A. Genaro leg. ( JAGC)  ; 2 ♀♀, Ponce, 7 May 1985, G.C. Eickwort leg. ( CUIC)  ; 9 ♀♀, Vasquez, sun, 18°07.4616′ N, 66°38.2638′ W, Malaise trap, 17 Jun.–15 Jul. 2014, S.G. Prado leg. (NCSU);  9 ♀♀, same collection data as preceding, 15 Jul.–12 Aug. 2014 (NCSU);  5 ♀♀, 2 ♂♂, same collection data as preceding, 12 Aug.–9 Sep. 2014 (NCSU);  5 ♀♀, 1 ♂, same collection data as preceding, 9 Sep.–7 Oct. 2014 (NCSU)  ; 1 ♀, same locality as preceding, ground bee bowl, 17 Jun.–15 Jul. 2014, S.G. Prado leg. ( NCSU)  . – Sabana Grande: 2 ♂♂, Susua Forest Reserve, 3 mi. NE of Sabana Grande, 3 May 1985, G.C. Eickwort leg. ( CUIC)  . – Santa Isabel: 1 ♂, Cohen, 17°59.737′ N, 66°25.451′ W, 12 Mar. 2013, S. Prado leg. ( NCSU)GoogleMaps  ; 12 ♀♀, same collection data as preceding, 24 Apr. 2013 (NCSU);  43 ♀♀, 2 ♂♂, Escalera Sr., 17°57.780′ N, 66°23.298′ W, 25 Jan. 2013, S. Prado leg. (NCSU: CCDB-22788 A04);  5 ♀♀, same collection data as preceding, 30 Jan. 2013 (NCSU);  7 ♀♀, 2 ♂♂, same collection data as preceding, 22 Apr. 2013 (NCSU);  1 ♂, same collection data as preceding, 23 Apr. 2013 (NCSU);  18 ♀♀, Gomez, 17°59.705′ N, 66°25.063′ W, 23 Jan. 2013, S. Prado leg. (NCSU: CCDB-22788 A01);  10 ♀♀, 1 ♂, same collection data as preceding, 13 Mar. 2013 (NCSU);  3 ♀♀, same collection data as preceding, 2 May 2013 (NCSU);  1 ♀, NW River, 18°0.017′ N, 66°26.115′ W, 26 Jan. 2013, S. Prado leg. (NCSU);  11 ♀♀, 1 ♂, same collection data as preceding, 13 Mar. 2013 (NCSU);  9 ♀♀, 1 ♂, same collection data as preceding, 15 Mar. 2013 (NCSU);  6 ♀♀, 2 ♂♂, same collection data as preceding, 24 Apr. 2013 (NCSU: CCDB-22788 A03, CCDB-22788 A10);  7 ♀♀, 3 ♂♂, same collection data as preceding, 26 Apr. 2013 (NCSU);  14 ♀♀, 1 ♂, Portalatin, 17°58.632′ N, 66°23.096′ W, 29 Jan. 2013, S. Prado leg. [NCSU: CCDB-22788 A02];  4 ♀♀, same collection data as preceding, 12 Mar. 2013 (NCSU);  4 ♀♀, 3 ♂♂, same collection data as preceding, 23 Apr. 2013 (NCSU: CCDB-22788 A11);  8 ♀♀, 1 ♂, Roriguez, 18°00.017′ N, 66°26.863′ W, 15 Mar. 2013, S. Prado leg. (NCSU);  9 ♀♀, Roriguez, same collection data as preceding, 26 Apr. 2013 (NCSU: CCDB-22788 A06);  2 ♀♀, SE River, 17°58.547′ N, 66°25.063′ W, 22 Jan. 2013, S. Prado leg. (NCSU);  5 ♀♀, 2 ♂♂, same collection data as preceding, 28 Jan. 2013 (NCSU);  1 ♀, same collection data as preceding, 13 Mar. 2013 (NCSU);  3 ♀♀, 1 ♂, same collection data as preceding, 15 Mar. 2013 (NCSU);  4 ♀♀, same collection data as preceding, 26 Apr. 2013 (NCSU);  2 ♀♀, 1 ♂, same collection data as preceding, 2 May 2013 (NCSU);  2 ♀♀, SW River, 17°59.496′ N, 66°26.582′ W, 22 Jan. 2013, S. Prado leg. (NCSU);  1 ♀, same collection data as preceding, 13 Mar. 2013 (NCSU);  5 ♀♀, same collection data as preceding, 15 Mar. 2013 (NCSU);  19 ♀♀, 3 ♂♂, same collection data as preceding, 24 Apr. 2013 (NCSU);  8 ♀♀, 1 ♂, same collection data as preceding, 26 Apr. 2013 (NCSU: CCDB-22788 A05);  1 ♀, Santa Isabel, 4 mi. N, 7 May 1985, G.C. Eickwort leg. ( CUIC)  . – Quebradilla : 2 ♀♀, 1 ♂, El Tunel, Balneiro, Guajataca, 30 May 2006, J.A. Genaro ( JAGC)  . – Yauco: 6 ♀♀, A7 Church site, 18°01.830′ N, 66°53.042′ W, ground bee bowl, 23 May –20 Jun. 2014, S.G. Prado leg. ( NCSU)GoogleMaps  ; 1 ♀, same collection data as preceding, 20 Jun.–18 Jul. 2014 (NCSU)  ; 5 ♀♀, 2 ♂♂, Montana, sun, 18°07.996′ N, 66°49.002′ W, net (9:30–10:50 am), 10 Jun. 2014, S.G. Prado leg. ( NCSU)GoogleMaps  ; 1 ♀, Villa Cecilia, 18°08.371′ N, 66°49.230′ W, net (9:15–10:45 am), 4 Jun. 2014, S.G. Prado leg. (NCSU)  .

US VIRGIN ISLANDS: St. Croix : 2 ♀♀, Southcentral (?), Exp. Sta. Grounds, 13 Jun. 1917, H. Morrison leg. ( NMNH)  . – Southwest : 5 ♀♀, Jackson, 17°42.397′ N, 64°50.022′ W, pepper nets, 19 Mar. 2013, S. Prado leg. ( NCSU)GoogleMaps  ; 1 ♀, same locality as preceding, pumpkin bowls, 19 Mar. 2013, S. Prado leg. ( NCSU)GoogleMaps  ; 1 ♀, St. John , [no locality], 9 Mar. 1935, ( AMNH)  . – St. Thomas : 2 ♀♀, 9 ♂♂, Charlotte Amalie, 31 May 1917, H. Morrison leg. ( NMNH)  . – Northside : 1 ♀, 1 ♂, Swept Magen Bay, 3 Jun. 1917, H. Morrison leg. ( NMNH)  .

Other material

BRITISH VIRGIN ISLANDS: Guana Island : 1 ♀, The Flat, Malaise trap, 2–3 Oct. 2007, B.D. Valentine family leg. ( AMNH);  1 ♀, same collection data as preceding, 20 Oct. 2007 ( AMNH);  1 ♀, same locality as preceding, sweeping, 9 Oct. 2007, B.D. Valentine family leg. ( AMNH);  1 ♀, same collection data as preceding, 10 Oct. 2007 ( AMNH);  1 ♀, same collection data as preceding, 22 Oct. 2006 ( AMNH);  1 ♀, flowers, 3 Oct. 2009, D. Valentine leg. (AMNH);  2 ♀♀, same collection data as preceding, 6 Oct. 2009 (AMNH);  1 ♀, same collection data as preceding, 8 Oct. 2009 (AMNH);  1 ♀, same collection data as preceding, 9 Oct. 2009 (AMNH);  1 ♀, same collection data as preceding, 10 Oct. 2009 (AMNH);  2 ♀♀, 1 ♂, same collection data as preceding, 15 Oct. 2009 (AMNH);  3 ♀♀, 2 ♂♂, hotel area, 5 Oct. 1991, R.R. Snelling leg. ( LACM);  3 ♀♀, same collection data as preceding, 7 Oct. 1992 ( LACM);  2 ♂♂, same collection data as preceding, 11 Oct. 1992 ( LACM);  1 ♀, same collection data as preceding, 15 Oct. 1991 ( LACM);  2 ♂♂, same collection data as preceding, 19 Oct. 1991 ( LACM);  3 ♀♀, same collection data as preceding, 21 Oct. 1991 ( LACM);  3 ♀♀, 2 ♂♂, same collection data as preceding, 22 Oct. 1991 ( LACM);  1 ♀, same collection data as preceding, 26–27 Oct. 1992 ( LACM);  2 ♂♂, North Beach , 18°29ʹ N, 64°34ʹ W, 9 Jul. 1993, R.R. Snelling leg. ( LACM);  2 ♀♀, 1 ♂, same locality as preceding, ex Jacquemontia pentantha  , 8 Oct. 1992, R.R. Snelling leg. ( LACM);  1 ♀, 1 ♂, same collection data as preceding, 9 Oct. 1992, ( LACM);  3 ♀♀, 2 ♂♂, same locality as preceding, 28 Oct. 1992, R.R. Snelling leg. (LACM);  1 ♀, north side, at night, 4 Oct. 2009, D.M. Dennis and W. Lu leg. (AMNH);  4 ♀♀, 1 ♂, plantation area, 18°28.7ʹ N, 64°34.4ʹ W, 27 Jun. 1993, R.R. Snelling leg. (LACM);  1 ♂, same collection data as preceding, 28 Jun. 1993 (LACM);  2 ♀♀, 1 ♂, plantation area, 25 Oct. 1992, R.R. Snelling leg. (LACM);  1 ♀, plantation area, ex Cardiospermum micranthum  [sic], 31 Oct. 1992, R.R. Snelling leg. (LACM);  1 ♀, Quail Dove Ghut, Malaise trap, Nov. 2006, W.-P. Liao leg. (AMNH);  7 ♀♀, White Beach, 18°28.7ʹ N, 64°34.5ʹ W, 28 Jun. 1993, R.R. Snelling leg. ( LACM);  1 ♀, 1 ♂, same collection data as preceding, 4 Jul. 1993 ( LACM);  6 ♀♀, 2 ♂♂, same locality as preceding, ex Casine xylocarpum [sic], 29 Jun. 1993, R.R. Snelling leg. (LACM);  2 ♀♀, same collection data as preceding, 30 Jun. 1993 (LACM)  ; 1 ♀, same collection data as preceding, 2 Jul. 1993 (LACM);  1 ♀, same collection data as preceding, 4 Jul. 1993 (LACM);  3 ♀♀, 2 ♂♂, White Beach, 18°29ʹ N, 64°34ʹ W, ex Cakile lanceolatum  [sic], 5 Jul. 1993, R.R. Snelling leg. ( LACM);  1 ♀, same locality as preceding, 9 Jul. 1993, R.R. Snelling leg. (LACM);  18 ♀♀, 4 ♂♂, White Beach, ex Cakile lanceolatum  , 10 Oct. 1992, R.R. Snelling leg. ( LACM);  2 ♀♀, same locality as preceding, Malaise trap, dry evergreen forest, 13–17 Oct. 1992, R.R. Snelling leg. ( LACM);  4 ♀, 3 ♂♂, same locality as preceding, ex Cakile lanceolatum  , 14 Oct. 1992  , R.R. Snelling leg. ( LACM);  1 ♀, same locality as preceding, ex Ipomoea  pes-capri braziliensis [sic], 16 Oct. 1992  , R.R. Snelling leg. ( LACM);  1 ♀, same locality as preceding, ex Coccoloba uvifera  , 30 Oct. 1992  , R.R. Snelling leg. ( LACM). –  Necker Island : 1 ♀, 2 ♂♂, 21 Jul. 1987, S.E. Miller leg. (LACM);  1 ♀, 11 Oct. 2003, B Valentine leg. ( AMNH). –  Virgin Gorda: 1 ♀, 3 ♂♂, Biras Hill, 22 Jul. 1998, S.E. Miller and C. O’Connell leg. (LACM). 

Description

Female

MEASUREMENTS. Head length: 1.16–1.39 mm (x= 1.31 mm, n =11); head width: 1.21–1.45 mm (x= 1.36 mm, n =11); intertegular distance: 0.86–1.11 mm (x= 0.98 mm, n =11).

COLOURATION. Head and mesosoma dull metallic golden green with blue reflections, except as follows. Labrum brown. Mandible brown with red apex. Clypeus distal half dark brown. Supraclypeal area bronze. Antenna dark brown, F9–F10 with ventral surface dark reddish brown. Tegula dark reddish brown to honey-coloured. Wing membrane hyaline with dark setae, venation and pterostigma brown. Legs dark brown, except medio- and distitarsi reddish brown. Metasomal terga brown, apical impressed areas reddish brown with yellowish posterior rim.

PUBESCENCE. Dull white. Relatively sparse erect setae throughout, without tomentum, except basolateral patches of T2–T3 and basally on T4. T1 with complete fan of appressed setae on anterior surface. T2 without apical fimbriae, T3–T4 with sparse fine seta on apical impressed areas, sparse fimbriae laterally. Scopa well developed on hind leg and metasomal sterna.

SURFACE SCULPTURE. Face imbricate, punctation moderately fine, finer on frons, coarse on distal clypeus. Clypeus punctation sparse (i=1–2.5 pd), finer and denser proximally, surface smooth distally (i =2–3 pd), supraclypeal area with punctures moderately dense (i=1–1.5 pd) and lower paraocular area punctation dense (i ≤pd). Upper paraocular area and frons reticulate-punctate (i <0.5 pd). Ocellocular area densely punctate (i≤ pd). Gena lineolate and postgena imbricate. Mesoscutum tessellate-imbricate, punctation fine, dense on lateral and posterior portions (i= 1–1.5 pd), sparser anteriorly and medially (i=1–3 pd); mesoscutellum similar, evenly punctured across surface. Metanotum imbricate. Preëpisternum rugulose. Hypoepimeral area finely, densely punctate (i<0.5 pd). Mesepisternum below scrobe densely punctate (i ≤pd), interspaces imbricate. Metepisternum dorsal ⅓ rugoso-carinulate, ventral portion imbricate. Metapostnotum with irregular rugae-carinulae often reaching to posterior margin, carinulae on lateral portions extending to dorsolateral slope. Propodeum posterior surfaces polished tessellate, distinct punctures on lateral surface (i= 3–5 pd), irregular carinulae on posterior surface. Metasomal terga polished, finely coriarious on T1 anterior surface and apical impressed areas; punctation very fine (i= 1–2 pd), apical impressed areas impunctate. Metasomal sterna coriarious and finely, sparsely punctate (i=2–4 pd).

STRUCTURE. Head slightly wider than long (length/width ratio= 0.93–0.98). Eyes weakly convergent below. Clypeus ½ below suborbital tangent. Gena narrower than eye. Hypostomal carinae subparallel. Pronotal dorsolateral angle obtuse. Pronotal ridge rounded, interrupted by sulcus. Tegula long, extended posteriorly into medially directed projection. Submarginal cells three (1rs-m present). Distal hamuli arranged 2-1-2. Inner metatibial spur pectinate, with 2–4 branches, proximal branch much longer than width of rachis. Metapostnotum narrowly rounded onto posterior propodeal surface. Propodeum with lateral carina nearly reaching dorsal margin; oblique carina fine. T2–T4 impressed areas medially about 2/5 longitudinal length of basal area.

Male

MEASUREMENTS. Head length: 1.21–1.38 mm (x= 1.28 mm, n=10); head width: 1.23–1.36 mm (x= 1.28 mm, n =10); intertegular distance: 0.79–0.94 mm (x= 0.85 mm, n =10).

Similar to female except for typical sex associated characters and as follows.

COLOURATION. Head and mesosoma dull metallic blue. Ventral surface of F1–F11 reddish brown. Tarsi brown to reddish brown. Metasomal terga dark brown.

PUBESCENCE. Face below eye emargination with subappressed tomentum, partially obscuring surface. Metasomal terga without tomentum. Metasomal sterna with sparse, posteriorly directed setae.

SURFACE SCULPTURE. Clypeus punctures dense (i<pd), evenly sized. Preëpisternum reticulate-punctate. Mesepisternum smooth, shining; punctures deep and distinct. Propodeum lateral surface densely punctate (i<pd). Metasomal terga with apical impressed areas impunctate.

STRUCTURE. Head about as long as wide (length/width ratio =0.96–1.02). Eyes convergent below. Ratio of pedicel, F1 and F2 =12:14:22; F2–F11 approximately 1.1–1.2× as long as wide. Metasomal terga with apical impressed areas medially less than ⅓ length of basal area. T2–T3 depressed anteriorly.

TERMINALIA. As illustrated in Fig. 4DView Fig. 4.

Distribution

Puerto Rico ( Fig. 11View Fig. 11), British and U.S. Virgin Islands.

Biology

Lasioglossum enatum  sp. nov. has been recorded visiting the following flowers: Gundlachia corymbosa (Urb.) Britton ex Boldingh ( Asteraceae  ), Barbieria pinnata (Pers.) Baill.  ( Fabaceae  ), Heliotropium curassavicum  L. ( Boraginaceae  ), Erythrina  crista-galli L. ( Fabaceae  ), Coriandrum sativum  L. ( Apiaceae  ), Spermacoce verticillata  L. ( Rubiaceae  ), Asparagus sp. ( Liliaceae  ), Rosa sp. ( Rosaceae  ), Cardiospermum microcarpum Kunth  ( Sapindaceae  ), Jacquemontia pentanthos  ( Convolvulaceae  ), Cakile lanceolata (Willd.) O.E. Schulz.  ( Brassicaceae  ), Cassine xylocarpa Vent.  ( Celastraceae  ), Ipomoea  pes-caprae (L.) R. Br. ssp. brasiliensis  (L.) van Ooststr. ( Convolvulaceae  ), Coccoloba uvifera  (L.) L. ( Polygonaceae  ). Snelling (1993) also recorded this species from Schaefferia frutescens Jacq. ( Celastraceae  ) as Lasioglossum  sp. 1.

DNA barcodes

Nine individuals were successfully sequenced (BOLD Process IDs: BOWGF3186-14, BOWGF3193-14, BOWGF3192-14, BOWGF3184-14, BOWGF3183-14, BOWGF3188-14, BOWGF3185-14, NTCOL187-15 and BOWGF3187-14). DNA barcodes are distinct from L. parvum  sequences from Cuba ( Fig. 1View Fig. 1), supporting the morphological characters used to recognize L. enatum  sp. nov.

JBWM

J.B. Wallis Museum of Entomology

NMNH

Smithsonian Institution, National Museum of Natural History

NCSU

North Carolina State University Insect Museum

LACM

Natural History Museum of Los Angeles County

CUIC

Cornell University Insect Collection

AMNH

American Museum of Natural History