Eufriesea barthelli Gonzalez & Griswold, 2017

Gonzalez, Victor H., Griswold, Terry & Simoes, Marianna, 2017, On the identity of the adventive species of Eufriesea Cockerell in the USA: systematics and potential distribution of the coerulescens species group (Hymenoptera, Apidae), Journal of Hymenoptera Research 55, pp. 55-102 : 62-65

Eufriesea barthelli Gonzalez & Griswold sp. n.

Male, Figs 4 , 14 , 15 , 84-89 , 90-95 ; Female, Figs 27 , 65 , 96-99

Diagnosis.

This species shares with E. micheneri and E. engeli the subapical projection of the anterior margin of the male metatibia, which is formed by the upper ridge that borders the depressed area, and the dorsal lobe of the gonostylus, which is apically broad and covered by setae on its outer surface. It is most similar to E. engeli from southern Mexico. It can be separated from that species by the posterior felty patch of the mesotibia, which is subapically about as wide as the distance between its medial margin and the anterior margin of the tibia (broader in E. engeli ), the finer and slightly sparser punctures on disc of T2, and its geographical distribution ( E. barthelli occurs in central Mexico). The female of E. barthelli is similar to that of E. oliveri in the long glossa, reaching at least to S1. However, they can be separated primarily by the punctation of the mesoscutellum. In E. barthelli it is finely, contiguously punctate throughout, with a distinct medial longitudinal groove that bears a row of dense setae. In E. oliveri , the mesoscutellum is coarsely, non-contiguously punctate, and with a weak medial longitudinal groove lacking a distinct row of dense pubescence.

Description.

Holotype, ♂: Head width 6.0 mm; intertegular distance 5.0 mm; body length 18.9 mm; forewing length 15.0 mm. Glossa in repose reaching S2. Anterior margin of metatibia in inner view with elevated ridge bordering depressed, smooth and hairless area above tibial spurs, upper margin of ridge medially projected, appearing as a spine in profile; metabasitarsus about twice as long as broad, inner surface near base weakly protuberant in frontal view, posterior margin gently convex, posterodistal margin broadly rounded. Hidden sterna and genitalia as in Figs 90-95 ; dorsal lobe of gonostylus broader apically than basally, distinctly setose on outer surface.

Mandible black on apical two-thirds, basally blue; labrum blue with weak green hues; remainder areas of head green with weak golden hues on face and bluish hues around ocelli and gena; antenna black. Mesosoma excluding legs predominantly green, with weak golden hues on mesoscutum anteriorly, disc of tegula and mesepisternum dorsally; weak bluish hues on axilla laterally, mesoscutellum, and propodeum basal and laterally. Legs mostly blue-purple except green on pro- and mesotibiae anteriorly and most of metatibia. Wing membrane infuscate, veins dark brown to black. T1-T4 green except distal margins blue to purple; T5-T7 blue-purple; sterna mainly green with weak blue-purple hues except S2 dark brown, with blue-purple hues barely visible basolaterally.

Head mainly with off-white setae, with gray to black setae on vertex. Mesosoma with gray to black setae except: whitish setae on posterior margin of meso- and metatibiae, outer surfaces of mesobasitarsus and metatibia; off-white on anterior half of mesoscutum, and lateral face of mesepisternum. Mesotibia with area between medial margin of posterior patch and anterior margin of tibia setose except on apical one-fourth; posterior patch 4.5 times longer than broad, subapically about as wide as distance between its medial margin and anterior margin of tibia. Metasoma with off-white to light brown setae, longer and denser on apical terga and sterna.

Clypeus without longitudinal medial depression. T2 with fine punctures on disc separated by at most a puncture width, distal margin narrow, about twice a puncture width.

♀: Head width 6.3-6.5 mm; body length 16.5-17.8 mm; forewing length 15.0 mm. Metatibia with emargination on distal margin about half width of posterodistal angle; metabasitarsus twice as long as broad.

Blue with purple hues on mandible basally, labrum, dorsum of mesosoma, mesepisternum ventrally, propodeum, legs, discs of sterna, and marginal zones of terga.

Pubescence black, except off-white on sides of T2, T3-T6, S1-S5, and S2 basally. Pubescence denser on mesosoma, not obscuring integument.

Clypeus with median longitudinal ridge continuing onto supraclypeal area; labrum with basal, longitudinally elongate tubercle, sublateral carinae sometimes weak. Mesoscutellum with fine, contiguous punctures submedially, median longitudinal groove well defined, with distinct row of dense pubescence. T2 with punctures on disc sparser than in the male, separated by at least a puncture width, impunctate distal margin wide, at least three or four times a puncture width.

Holotype.

♂, Chalchijapa, Santa Maria, Chimalapa; Oaxaca, 28-v-1995. J.L. Salina, 100 m, Selva Alta Perennifolia, al vuelo JL-265. Red Ornitológica 09:00 h// Museo de Zoología, Hymenoptera 11086. Deposited in UNAM.

Paratypes.

(n = 5♂, 2♀), Mexico: 1♂, km. 12, Autopista México-Cuautla, Tepoztlán; Morelos. 30/06/1996, I. Hinojosa, HD-755. 14:20 H, 1650 m. 18°58'24"N, 99°04'57"W, Cultivo de temporal, s/ Podranea ricasoliana / # 02290 (UNAM); idem, 1♂, 13/07/1996, O. Yáñez, OY-752, 13:30 H / # 02310 (UNAM); idem, 1♀, 10/11/1996, H. Hinojosa, HD-1334, 12:55 H, s/ Tithonia tubaeiformis / # 02709 (UNAM); idem, 1♀, 08/10/1995, O. Yáñez, OY-169, 12:10 H, atraída por esencia (mezcla) / # 01827 (UNAM); 1♂, mts. N. Ajijic, JAL [Jalisco]., MEX. to 5300', 23 July, 1964, WLNutting & sons, scrub forest // BBSL849647 (BBSL); 1♂, idem (FSCA); 1♂, Canyon N. Ajijic, JAL. MEX. to 5400', 22 July 1964, WLNutting & sons, scrub forest / SM0504535, KUNHM-ENT (SEMC).

Additional material.

(n = 6♀, not designated as paratypes) 1♀, ECO-TAP-E-95712, Mex., Jal., [Jalisco], Tamazula , Agua Zarca , 1829 m, 19.82484N, 103.27449W, 31/10/2012, 10:00, Col. Jorge Mérida (ECOSUR) ; 1♀, Mexico: Jalisco, 13km SE La Manzanilla, La Loma Alla , 31-x-1990, C.M. Estrada #69 / SM0730193, KUNHM-ENT (SEMC) ; 1♀, Museum Paris, Mexique, Etat de Jalisco , L.Diguet, 1900 (MNHN) ; 1♀, Ahuacatlan, Nay. [Nayarit], Mex. , vii-18-22-51 / H.E. Evans, collector / SM0504525, KUNHM-ENT (SEMC) ; 1♀, 3mi W. Jacona, Mich [Michoacan], vii-18-53, 5300ft / Univ. Kans. Mex. Expedition / SM0504527, KUNHM-ENT (SEMC) ; 1♀, Mexico, Morelos, 4 mi. SW Yautepec , 2 July 1961, 3800', C.D. Michener, on flowers of Cassia sp. (FSCA) .

Variation. The blue-purple coloration is strong in both males from Morelos and one of the males from Jalisco. In particular, one of the males from Morelos (UNAM, #02290) has extensive blue hues on all tagmata.

Etymology.

This species is dedicated to our friend and colleague Dr. John Barthell (University of Central Oklahoma) for his contributions to bee ecology and efforts to promote undergraduate research on bees.

Distribution.

Central Mexico: Jalisco, Michoacán, Morelos, Nayarit, Oaxaca.

Figures

Figures 4 - 6. Male mesotibia. 4 E. barthelli (holotype) 5 E. engeli (paratype, KUNHM-ENT 0504531) 6 E. micheneri (paratype. Mexico: Jalisco, Mascota, KUNHM-ENT 1121713).

Figures 14 - 19. Detail of the subapical projection (indicated by an arrow) above the spurs of the male metatibia in anterior (14, 16, 18) and lateral views (15, 17, 19). 14, 15 E. barthelli (paratype. Mexico: Jalisco, Ajijic, KUNHM-ENT 0504535); 16, 17 E. engeli (paratype, KUNHM-ENT 0504531) 18, 19 E. micheneri (paratype. Mexico: Jalisco, Talpa, KUNHM-ENT 1121712).

Figures 84 - 89. Male holotype of E. barthelli (except paratype in Fig. 87, KUNHM-ENT 0504535). 84 Facial view 85 Dorsal habitus 86 Lateral habitus 87 Outer view of hind leg 88 Dorsal view of mesoscutellum 89 Second metasomal tergum.

Figures 90 - 95. Male terminalia of E. barthelli (paratype. Mexico: Jalisco, Ajijic, KUNHM-ENT 0504535). 90 Seventh metasomal sternum in ventral view 91, 92 Eighth metasomal sternum in ventral and lateral views 93 - 95 Genital capsule in dorsal, ventral, and lateral views.

Figures 27 - 33. Dorsal views of female mesoscutellum (27, 28) and tegula (29, 30), and outer view of hind leg (31 - 33). 27 E. barthelli (paratype. Mexico: Morelos, Tepoztlan, UNAM 01827) 28, 33 E. oliveri (paratype. Mexico: Guerrero, EMEC 1069136) 29, 31 E. coerulescens (Mexico: San Luis Potosi, ECO-TAP-E- 104700; Queretaro, ECO-TAP-E- 104753) 30, 32 E. micheneri (paratype. Mexico: Jalisco, Mascota, KUNHM-ENT 1121708). Arrows in Fig. 27 indicate the distinct medial longitudinal groove with row of dense pubescence.

Figures 63 - 66. Female second metasomal tergum. 63 E. oliveri (paratype. Mexico: Guerrero, EMEC 1069136) 64 E. simillima (paratype. Mexico, Maguarichi, KUNHM-ENT 1091973) 65 E. barthelli (paratype. Mexico: Morelos, Tepoztlan, UNAM 01827) 66 E. micheneri (paratype. Mexico: Jalisco, Mascota, KUNHM-ENT 1121708).

Figures 96 - 99. Female paratype of E. barthelli (Mexico: Morelos, Tepoztlan, UNAM 01827). 96 Facial view 97 Dorsal habitus 98 Lateral habitus 99 Outer view of hind leg.