Colletes jobeli Balboa & Ayala, 2017

Ayala, Ricardo, 2017, New dark species of the bee genus Colletes (Hymenoptera, Colletidae) from Mexico and Guatemala, Zootaxa 4320 (3), pp. 401-425 : 405-407

Colletes jobeli Balboa & Ayala new species

Figs. 8–14

Diagnosis. This species is similar to C. bombiformis Metz, 1910 and C. rugicollis , but can be distinguished by having a longer malar area; elevated supraclypeal area with denser punctures; scutum pubescence gray with black hairs intermixed; genal area with grey hairs; small and dense punctures becoming striate towards the malar area. It differs from C. bombiformis by having clypeus not as coarse; crossed by a longitudinal median sulcus; marginal zone of sterna with punctures; and episternum with brown pubescence. It differs from C. rugicollis by having smooth labrum without depressions and clypeus convex. Males of C. jobeli can be easily distinguished from other males of Colletes by having black F2 and F3, smaller than F1, genal area depressed with whitish pubescence and pronotal lobe with tuft of long brown hairs; the shape of S7, S8 and genital capsule ( Figs. 12–14 ) separates C. jobeli from other Mesoamerican species. It can be distinguished from C. tzotzilis and C. isabelae by having all terga black without purple iridescence (as in C. tzotzilis ) or bluish (as in C. isabelae ).

Description. Holotype ♀: Integument black, scutum and facial pubescence greyish with black hairs ( Fig. 8 ); rest of body with black pubescence. Body length 11 mm (10.8 – 11 mm, n=2); forewing length 8.9 mm (8.7 – 8.9 mm, n=2). Head: Mandible with acute apex, reddish on distal area, shiny and black on proximal area; interior and exterior margins with long brown hairs on median part. Malar area two times wider than longer; with two thin longitudinal striae. Labrum shiny black with depression on discal area. Clypeus shiny black, slightly flattened; with faint diagonal striae, punctures mainly on discal area, decreasing in size toward distal margin; with median notch on distal margin; discal area with shiny integument and few light and black pubescence. Supraclypeal area with conic elevation, punctures small. Facial pubescence whitish to greyish with black hairs mainly on lower and internal margin of eyes. Paraocular and supra-antennal areas with dense punctures decreasing in size toward interocellar and interocular areas. Scape and pedicel black with sparse, shallow punctures. F1 black, other flagellomeres brown. F2 and F3 shorter than F1. Facial fovea with matt integument. Interocellar area with brown pubescence and few black hairs. Vertex with punctures small, coarse, contiguous. Genal area with small, shallow, sparse punctures; greyish hairs intermixed with few black hairs. Mesosoma: Pronotum with black integument and punctures on margins. Prothoracic spine acute, well developed. Sides of mesosoma with shiny black integument and black plumose hairs. Pronotal lobe with tuft of black and grey hairs intermixed. Punctures of lateral area of mesosoma dense and uniform, separated by at least their diameter. Scutum with grey and black hairs intermixed; punctures small and dense, contiguous on anterior and posterior margins, separated on discal area. Black scutellum, less shiny than scutum; with black plumose hairs and small punctures, denser in posterior than anterior margin. Metanotum black and opaque with black hairs and punctures contiguous, shallower than in scutellum. Propodeum with dull black integument and dark hairs, less plumose than lateral parts of mesosoma. Propodeal triangle shiny and black, with irregular striae on anterior margin. Wings: Tegula dark with sparse and shallow punctures, narrowed anteriorly, posteriorly rounded ( Fig. 11 ). Wings hyaline and smoky ( Figs. 8, 9 ). Legs: Tibiae and tarsi black with dark pubescence. Malus light brown. Trochanter and anterior femur with tuft of long grey hairs on exterior part. Middle trochanter and femur with grey hairs. Posterior trochanter and femur with black hairs. Hairs longer on anterior and middle legs. Anterior margin of middle femur with tuft of light brown bristles. Black pubescence on middle tibia, brown when illuminated from behind. Claws apically bifurcate, light brown and reddish in basal and apical areas, respectively. Metasoma: Terga with shiny and black integument; marginal zone with smooth integument and few shallow punctures ( Fig. 10 ). T1 with shallow, sparse punctures and long black, sparse pubescence. T2–T5 with small, black pubescence with punctures denser than T1. Sterna with dense, small punctures and short black pubescence.

Allotype ♂: Smaller than female, 11.15 mm (11.15 – 11.36 mm, n=2). Scutum with brown and black hairs. Head: Supraclypeal area with more black hairs than in females. Antenna with black F1, which is smaller than F2 and F3. Genal area depressed with whitish pubescence; small, dense, and shallow punctures becoming striate toward malar area, wich is three times wider than longer. Mesosoma: Anterior margin of scutum with light pubescence. Scutellum, metanotum, and propodeum with integument, pubescence, and punctures similar to female. Sides of mesosoma shiny black with small, dense, and shallow punctures. Pronotal lobe with brown tuft. Wings: Hyaline and smoky with black veins. Legs: Black pubescence on most of segments, brown on internal part of tibia. Black malus with light brown apex. anterior and middle femur with long black plumose hairs on distal margin of posterior area. Hind coxa, trochanter, and femur with black hairs, slightly denser and longer than in tibia and basitarsus. Claws bifurcate distally with mainly reddish integument. Metasoma: Similar to female with smooth black terga with small and shallow punctures; rounded anterior and posterior margins. S7, S8, and genital capsule as in Figures 12–14 .

Type material. Holotype ♀: Mexico: Chiapas: Oxchuc, Retiro. 16.78602, -92.36720; 28-VIII-2013; 2231 m; M. Santiz . Allotype ♂: San Cristóbal de las Casas, Huitepec. 16.4435, -92.4117; 0 4-I-2011; 2 560 m; P. Sagot . Paratypes: 1♀: Oxchuc, Retiro. 16.78602, -92.36720; 28-VIII-2013; 2231 m; J. López. 1♂: Oxchuc, Mukulwitz. 16.8019, -92.3219; 23IV-2013; 1928 m; J. López. Holotype and allotype deposited at CNIN, paratypes at ECO– TAP–E.

Etymology. The species name is originated from the word Jo’bel (“zacate grande”), used by pre ‒ Hispanic people when referring to the San Cristóbal de las Casas valley in Chiapas.

Distribution. This species is known from three close localities in the Altos de Chiapas region, inside the Chiapas province (s. Morrone 2005). Its distribution may be related to pine-oak and tropical montane rain forests from this province ( Fig. 57 ).

Remarks. Females may have dark mandibles, reduced notch on clypeus margin, and opaque terga (probably deterioration). Some females may have malar area three times wider than longer. In males, the notch on distal margin of clypeus may be reduced and the margins of terga may be brown.

Figures

FIGURES 8 – 14. Colletes jobeli Balboa & Ayala sp. n. 8 — female (holotype): habitus, lateral view; 9 — male allotype: habitus, lateral view; 10 — female holotype: T 2 y T 3; 11 — female paratype: tegula; 12 — male allotype: S 7; 13 — male allotype: S 8; 14 — male allotype: genital capsule.

FIGURES 57 – 58. 57 — Map of collecting localities for Colletes jobeli, C. isabelae, C. jaliscoensis and C. nigerrima. 58 — Map of collecting localities for C. solari, C. tzotzilis, C. chiaPensis, and C. guatemalensis.