Ceratina (Zadontomerus) rehanae Florez-Gomez & Ayala 2022, new species
Creators: name: Flórez-Gómez, Nathalia
name: Ayala, Ricardo
name: Hinojosa-Díaz, Ismael
name: Morrone, Juan J.
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Apidae
Ceratina
Ceratina rehanae

description: Ceratina (Zadontomerus) rehanae Flórez-Gómez & Ayala new species
(Figures 17, 18, 21C, 22I, 23J, 24I, 27)
Diagnosis: Body size of females from 6.6–8.0 mm and males from 6.0–8.0 mm; yellow maculation on the pronotal lobe, dark green bees, sometimes with golden metallic tones; smoked wings and marginal cell slightly darker. Females with frons, paraocular area and gena densely punctate, disk of scutum with dispersed punctures along the medial line and surrounding the parapsidial lines; scutellum densely punctate. Males with hind trochanter with ventral margin forming a right angle; hind femur with strong medial dilation forming an angle, ventral margin glabrous (Fig. 22I); and posterior margin of T7 concave, forming medial projection (Fig. 23J). This species is similar to C. basaltica; but females can be distinguished by a more conspicuous punctation on disc of scutum, around the parapsidial lines. Males can be recognized because, in contrast to those of C. basaltica, they do not have a swollen area on the medial area of T6.
Description. Holotype male. Length 6.5 mm. Body dark green with golden metallic tones.
Head. Mandibles with two black teeth. Labrum with medial yellow mark. Clypeus with inverted T-shaped yellow mark, covering almost all the clypeus; area without mark with dense punctures. Eyes with inner margin convergent below. Paraocular area, supraclypeal area and frons with densely distributed punctures, separated by a distance up to a puncture diameter. Vertex punctation as the rest of the head, with scattered yellowish hairs. Gena with dense punctures, lower area with long scarce pubescence. Preoccipital carina foveate, slightly more evident than female. Antennae dark brown., pedicel and scape with long and scattered yellowish pubescence. Head length 1.60 mm; head width 1.84 mm; lower interocular distance 0.85 mm; upper interocular distance 1.2 mm; ocellocular distance 0.375 mm.
Mesosoma. Pronotum with lateral carina, dorsolateral angle rounded, pronotal lobe with yellow mark covering all the surface. Mesepisternum densely punctate; punctures separated by a distance of up to a puncture diameter, becoming sparser below; hypoepimeral area with punctures densely distributed, as the rest of mesepisternum, with small impunctate region next to the episternal scrobe. Metepisternum with punctures as mesepisternum. Scutum, anterior region with dense punctures, separated by a distance of up to a puncture diameter, disc with disperse punctures separated by a distance up to 3 times a puncture diameter, posterior area with close punctures Scutellum with dense punctures, but disc with slightly more separated punctures. Metanotum rugose. Propodeal triangle striate, medial striae longer than lateral ones. Propodeum, lateral sides with fine and close punctures, with dispersed and whitish pubescence. Tegula brown. Wings smoked, marginal cell slightly darker, venation dark brown. Length of forewing 4.7 mm. Scutum length 0.96 mm; scutum width 1.40 mm. Legs. Hind trochanter with ventral margin forming a right angle, with scarce short pubescence. Hind femur with strong medial dilation forming an angle, ventral margin glabrous (Fig. 22I).
Metasoma. T1 polished and impunctate, but with dense punctures on the posterior margin and disc. T2 and T3 densely punctate, punctures separated by a distance less or as a puncture diameter, disc with polished, almost impunctate transversal region. T4 with dense punctures, posterior margin with scattered short pubescence. T5 rugose. T6, medial area with tuft of yellowish pubescence. T7, posterior margin concave, forming medial projection (Fig. 23J). S6, as shown in Figure 24I. Genital capsule as shown in the Fig. 18.
Paratype female. Length 7.6 mm. Body dark green with golden metallic tones.
Head. Mandibles with three teeth, dark brown, outer margin with short and scarce pubescence. Maxillary palps with 6 segments. Hypostomal carina rounded. Labrum, dark brown with scattered yellowish pubescence. Clypeus, medial area impunctate and with oval yellow mark; upper area with dense punctures. Supraclypeal area with fine and dense punctures between antennal sockets, medial area impunctate but with longitudinal line of punctures. Eyes with inner margins subparallel. Paraocular area with punctures densely distributed, separated by a distance up to 1.5 times puncture diameter, punctures reaching the epistomal suture. Frons, area surrounding the impunctate swellings and vertex with punctures densely distributed, as in the paraocular area. Gena narrower than compound eye width; upper area with dense punctures separated by a distance up to a puncture diameter, becoming sparser below, distanced by 0.5–2.0 times a puncture diameter, reaching the preoccipital margin. Preoccipital margin carinate. Antennae as in males. Head length 1.8 mm; head width 2.09 mm; lower interocular distance 1.15 mm; upper interocular distance 1.36 mm; ocellocular distance 0.48 mm.
Mesosoma. Pronotum, mesepisternum, metepisternum, scutellum, and propodeum as in males. Scutum, anterior region with dense punctures, separated by a distance of up to a puncture diameter, disc with dispersed punctures along the anteromedian line and around parapsidial lines, posterior area with close punctures. Tegula and wings as in male. Length of forewing 4.7 mm. Scutum length 1.05 mm; scutum width 1.6 mm. Legs. Dark brown with green metallic tones. Tibia base with yellow spot. Tarsi light brown. Spurs light brown.
Metasoma. T1-T4 punctures as in male. T5 and T6 rugose, with scattered whitish pubescence.
Type material. Holotype (♂ AMNH): MEXICO: Jalisco: Zapotillo, 3 km N, 15-VII-1989, J. Rozen. Described paratype (♀ AMNH): same locality as holotype. Other paratypes: Chiapas: Motozintla, 1200 m, 15.30, - 92.23, 7- XI-2011, P. Sagot (♂ ECOAB: 56053, ♀ ECOAB: 122317).
Material examined: MEXICO. Chiapas: Las Cruces, 15-IX-1974, G. Bohart (BBSL: 1♀). Colima: Colima, 16 km NW, 800 m, 19-XII-1989, T. Griswold (BBSL: 1♀). Guerrero: Zihuatanejo, km 55 I. M. Altamirano, 19- III-1989, R. Ayala (EBCh: 5♀). Jalisco: Puerto Vallarta, 07-XII-1986, G. Bohart (BBSL: 13, 21♂). El Grullo, 1200 m, 17-VII-1989, T. Griswold (BBSL: 2♀). Purificación 20 km S, 300 m, 16-VII-1989 (BBSL: 4♀, 9♂). Autlán de Navarro 30 km, 500 m, 16-VII-1989, T. Griswold (BBSL: 1♀). Barra de Navidad, 18-IV-1986, F. Parker (BBSL: 2♀). Ciudad Guzmán 22 km N, 1800 m, 17-VII-1989, T. Griswold (EBCh: 3♀). San Clemente, 20.085269, -104.253856, 16-VII-1989, J. Rozen (AMNH: 3♀). Zapotillo, 21.147776, -102.80108, 15-VII-1989, J. Rozen (AMNH: 2 ♂). Morelos: Reserva de la Biosfera Sierra de Huautla, 18.4587, -99.0072, 24-IV-2000, R. Westcott (BBSL: 3♀). Ajuchitlán, 2.5 km O. Ajuchitlán, 950 m, 18.46775, -98.99243, 07-VIII-1996, M. E Guardado (EBCh: 1♂). Huautla, 2.5 km N 4 km O Huautla, Estación CEAMISH, 940 m, 18.46118, -99.0412, 07-VIII-1996, C. A Uribe (EBCh: 1♂). Nayarit: San Blas, 150 m, 1-IX-1963, H. Weems (BBSL: 1♀). Tepic, 25-VII-1954, M. Cazier (AMNH: 2♀). Puebla: Zapotitlán, 2-III-1972, F. Parker (BBSL: 1♂). Veracruz: Huatusco, 19. 17337, -96. 9724, 11-I-2007, S. W. Droege (EBCh: 8♀, 5♂).
Distribution: Ceratina (Z.) rehanae is found mainly in the Mexican lowlands, although some specimens can be found in mountainous regions up to 1000 m above sea level. It is associated to the Pacific Lowlands, Balsas Basin, southern slope of the Transmexican Volcanic Belt, Sierra Madre Oriental and Sierra Madre del Sur. Presumably endemic to Mexico, it is found in the states of Chiapas, Colima, Guerrero, Jalisco, Morelos, Nayarit, Puebla and Veracruz.
Etymology: The name of this species is dedicated to Sandra Rehan, a bee scientist who has dedicated much of her research to the biology, systematics, and evolution of Ceratina.
description: Published as part of Flórez-Gómez, Nathalia, Ayala, Ricardo, Hinojosa-Díaz, Ismael & Morrone, Juan J., 2022, The Neotropical Species Of Small Carpenter Bees Of The Subgenus Ceratina (Zadontomerus) Ashmead, 1899 (Hymenoptera: Apidae), pp. 189-223 in Zootaxa 5214 (2) on pages 211-213, DOI: 10.11646/zootaxa.5214.2.3, http://zenodo.org/record/7384856