Ceratina (Calloceratina) triangulifera Cockerell, 1914

Mahlmann, Thiago, Oliveira, Favízia Freitas de & Oliveira, Marcio Luiz de, 2023, Taxonomy of South American species of Ceratina (Calloceratina) Cockerell, 1924 with comments on new species-groups proposed for this subgenus (Hymenoptera: Apidae: Xylocopinae), EntomoBrasilis (e 1062) 16, pp. 1062-1062 : 6-8

Ceratina (Calloceratina) triangulifera Cockerell, 1914

( Figures 3-4 )

Ceratina triangulifera Cockerell, 1914: 315 ; COCKERELL 1931: 549 [comparative note].

Ceratina ecuadoria Friese, 1916: 323 ; COCKERELL 1931: 549 [synonymy].

Ceratina (Calloceratina) triangulifera ; MOURE 2007: 639 [catalog].

Diagnosis. Integument bright metallic green including base of mandible, with slight metallic bluish reflections; disc of labrum with small, rounded spot; clypeus with a large yellow triangular maculation expanded towards its lateral expansions; graduli present on T2 to T5.

Male: Apical margin of T7 narrow and slightly emarginated or rounded. Preapical margin of S5 without acute processes ( Figure 4 B-C).

Redescription. Holotype female ( Figure 3 ): Body length 8.4; forewing length 6.0; clypeus approximately 1.4 times as wide as long; ocellocular distance 2.7 OD; ocelloccipital distance 2 OD.

Color. Integument bright metallic green, including base of mandible, with slight metallic bluish reflections; labrum, mandible, apical margin of clypeus and disc of T2-T4 brownish. Slight coppery reflections on lower half of face and propodeum. Tegula light brown, translucent; wing veins brown and wing membrane weakly brownish. Legs brownish with metallic green reflections on coxae, trochanters, outer surface of femora, imperceptible depending on viewing angle, and protibia. Reddish-brown bands on preapical margins of T2 and T3, interrupted medially. Dorsoapical surface of profemur with a triangular yellow spot; dorsobasal surface of tibiae with a rounded yellow spot, near to articulation with femora, faded in mesotibia; dorsal yellow stripe on protibia.

Pubescence. Mostly whitish, yellowish on labrum, mandible, tarsi, and apex of metasoma. Disc of propodeum with long hairs, lateral areas with short and dense hairs intermingled with long hairs more evenly distributed. T4-T6 covered with short yellowish setae, spatulate on T4 and sides of T5.

Integumental surface. Body coarsely punctate except as follows: large smooth and polished areas on genal area and disc of mesoscutum. Narrow longitudinal polished band on posterior margin of metapostnotum.

Structure. Maxillary palpus five-segmented. Preoccipital carina well pronounced. Lateral areas of pronotum with carina strongly pronounced forming lamella. Metatibia with developed carina. Graduli present on T2 to T5.

Variation. Yellow mark on labrum sometimes absent. Rounded spot on tibiae more evident in some specimens. Body length ranges from 7.9-9.6.

Male description. Similar to female except as follows: metallic bluish reflections and yellow marks more evident; three translucent brown spots at base of labrum, the middle one smaller; labrum almost entirely pale yellow; pale yellow stripe at base of mandible, near inner margin; maculation on clypeus broader in its lateral expansions; small whitish subtriangular spots on lower paraocular area, over lateral expansions of clypeus; disc of tegula with small whitish rounded spot; preoccipital carina more pronounced; metatibia with reduced carina; apical margin of T7 narrow and slightly emarginated or rounded; preapical margin of S5 without acute processes, but apparently with a couple of scars ( Figure 4C ); apical margin of S6 with a wide quadrangular notch medially ( Figure 4D ); genital capsule as in figure 4E. Body length 8.4; forewing length 5.8; clypeus approximately 1.3 times as wide as long; ocellocular distance 2.4 OD; ocelloccipital distance 1.7 OD. Male terminal structures as in Figure 4 B-E.

Type locality. Ecuador: Guayas, Guayaquil .

Type material examined. Ceratina triangulifera : Guayaquil, v. Buchwald [handwritten] // 28 [handwritten] // Ceratina triangulifera Ckll. Type [handwritten] // Type 55730 USNM [red label] // Loan from USNMNH 2054346 (Holotype ♀, NMNH); Ceratina ecuadoria : Ecuador, Guayaqil[Guayaquil], 1901, Buchwald // Ceratina ecuadoria ♀, 1915 Friese Det. [handwritten] // Typus [orange label] // Zool. Mus. Berlin [yellow label] (Syntype ♀, ZMB); Ecuador, Guayaqil[Guayaquil], 3.1901, Buchwald // Ceratina ecuadoria ♂, 1915 Friese Det. [handwritten] // Typus [orange label] // Zool. Mus. Berlin (Syntype ♂, ZMB) .

Additional material examined. ECUADOR: Guayaquil, 1923, Buchwald, Cucurbita // Ceratina laeta V. ecuatoria, ♀ 1910, Friese det. // Coll. Friese // Zool. Mus. Berlin (1♀ ZMB); Guayaquil, 4.1923, Buchwald, Cucurbita // Ceratina laeta V. ecuatoria, ♀ 1910, Friese det. // Zool. Mus. Berlin (1♀ ZMB); idem Ceratina laeta V. ecuatoria, ♀ 1909, Friese det. // 97459 (1♀ MZUSP); Guayaquil, 3.1901, Buchwald // Ceratina laeta Friese det. (1♀ MACN); Guayas, Naranjal, iv.1985, Legit: G. Onore // QCAZ I 18971 (1♀ QCAZ); Loja, Vilcabamba, Legit: Onore // QCAZ I 18948 (1♀ QCAZ); Manabí, Portoviejo, viii.1985, Legit: L.Coloma // QCAZ I 18935 (1♀ QCAZ); idem QCAZ I 18943 (1♀ QCAZ); idem QCAZ I 18942 (1♀ QCAZ); idem 006 // QCAZ I 64441 (1♀ QCAZ); idem Ceratina det. D.W. Roubik, 1991 // QCAZ I 18934 // Ceratina (Calloceratina) det. J.S. Ascher, 2012 (1♀ QCAZ); Manabí, 5.xii.1985, Legit: J. Ullos // QCAZ I 18936 (1♀ QCAZ); Pichincha, Endesa, 700m, 00º05'00''N, 79º02'00''W, 4 Julio, 2003, P. Santacruz // QCAZ I 64446 (1♀ QCAZ). PERU: Lambayeque, 1km S. Lambayeque, Carretera Panamericana, 23.vii.1975, col. C.Poter, L.Stange // Colección, Inst. - Fund. M. Lillo, (4000) - S. M. Tucuman, Tucuman - Argentina (1♀, 1♂ IFML); [Lambayeque], 10km S. of Chiclayo, iii.19.1951 // Ross and Michaelbacher Collectors (3♀♀, 1♂ CASC); 5mi S. of Chiclayo, Lambayeque, 20m., i.17.1955 // E.I.Schlinger and E.S.Ross (1♀ CASC); Samne, ca. 40km NE Trujillo Provincia, La Libertad, 7º59'S, 78º41'W, elev. Ca. 1500m, 12 - 17 July, 1975, C.Porter, L.Stange // Colección, Inst. - Fund. M. Lillo, (4000) - S. M. Tucuman, Tucuman - Argentina (2 ♂♂ IFML).

Distribution. Ecuador (Guayas, Loja, Manabí, Pichincha); Peru (La Libertad, Lambayeque).

Comments. COCKERELL (1914), in the original description, did not report how many specimens were studied, describing only the type female. It differs from C. (Calloceratina) chloris by the very distinct pigmentation of the face and legs in both sexes, smaller ocelloccipital distance compared to the ocellocular distance (subequal in C. (Calloceratina) chloris ), graduli present on T2 to T5 and for the difference in morphology of male terminalia structures.

Figures

Figure 3. Holotype ♀ of Ceratina (Calloceratina) triangulifera Cockerell. (A) head in frontal view; (B) lateral habitus; (C) labels attached to the specimen. Scale bar (B) = 5.0 mm. Credit T.Mahlmann.

Figure 4. Male of Ceratina (Calloceratina) triangulifera Cockerell. (A) head in frontal view; (B) T7; (C) S5; (D) S6; (E) genital capsule. Scale bar: = 1.0 mm. Credit T.Mahlmann.