Colletes guatemalensis 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 : 407-409

Colletes guatemalensis Balboa & Ayala new species

Figs. 15–21

Diagnosis. This species can be distinguished from other Mesoamerican Colletes by having a flat and elevated supraclypeal area with sparse punctures; marginal cell two and a half times the length of second submarginal cell; upper surface of mesepisternum with sparse and irregular punctures; propodeum with whitish pubescence; internal spur of medium tibia dark brown; T2–T3 with apical bands interrupted in medium part ( Fig. 18 ). It differs from C. punctipennis by having hyaline and spotless wings ( Figs. 15, 16 ), from C. rugicollis by having sparser and shallower punctures and from C. panamensis by having lighter pubescence on legs and mesosoma, the apical hair bands on C. panamensis are present only in T1-T4 while in C. guatemalensis are present on T1-T5. Males of C. guatemalensis can be separated from C. solari by having the apical band of T1 thiner than other terga, all apical bands have silver pubescence, while in C. solari is golden.

Description. Holotype ♀: Bee with black integument. Body length 8 mm (7.9 – 8.6 mm, n=5); forewing length 6.9 mm (6.7 – 7.2 mm, n=5). Head: Mandible with basal and distal parts with black and reddish integument, respectively ( Fig. 17 ). Subapical tooth projected alongside inner margin. Malar area five times wider than longer; with thin and shiny longitudinal striae. Labrum with black integument and without punctures; discal area with a depression and longitudinal striae on sides, from posterior to anterior margin. Clypeus slightly convex with black integument; faded longitudinal striae on discal area, strong diagonal striae on lower lateral areas; deep punctures between striae; distal margin with a small notch and proximal margin straight. Supraclypeal area with flat elevation, thin striae, and few punctures ( Fig. 17 ). Paraocular area with small silver hairs; contiguous punctures decreasing in size towards antennal socket and frontal area. Antenna with scape, pedicel, F1, and F2 black, other flagellomeres brown. F2 and F3 smaller than F1. Facial fovea thin at the middle of compound eye, broadened towards upper paraocular area and reducing its width towards lateral oceli; integument black and shiny with some sparse punctures on the wider area. Vertex and interocellar area at same level of upper margin of eyes. Ocellocular area with small and sparse punctures contrasting with those on paraocular area. Genal area with small punctures separated by irregular and longitudinal striae getting wider near mandible. Mesosoma: Pronotum with black integument. Prothoracic spine long, thin, and acute. Scutum with shiny black integument; dense punctures of two different sizes, faded on anterior margin and discal area; short and brown pubescence mainly on margins; discal area with few hairs. Scutellum with shiny black integument and sparse punctures; black and brown pubescence, larger than on scutum; anterior margin without punctures. Metanotum with dull black integument; dense and shallow punctures; light brown pubescence. Basal area of propodeum with longitudinal complete striae forming pits with smooth integument inside. Other parts of propodeum with shiny black integument and strong irregular striae. Sides of mesosoma with dense and deep punctures that increase in size toward episternum. Upper surface of mesepisternum with shiny black integument and punctures less dense than on sides of mesosoma. Pronotal lobe with tuft of whitish and brown hairs intermixed. Wings: Tegula with brown integument and rounded margins, without visible punctures. Hyaline wings with iridescence on apex. Brown veins and stigma ( Fig. 15 ). Legs: Integument brown with silver pubescence on coxa, trochanter, and femur; lighter on tibia and tarsus. Anterior legs with brown malus. Middle legs with tuft of light bristles. Posterior legs, trochanter, and femur with long pubescence in contrast with other legs. Posterior legs with simple spurs, light brown integument, and dark brown apex. Claws bifurcate distally; light brown on base, and dark brown at apex. Arolium well developed and brown. Metasoma: Black integument, terga with dark brown marginal zone. T1–T5 with thin apical bands of silver pubescence ( Fig. 18 ). T1–T5 with small and dense lateral tufts of whitish hairs. S1–S6 with short and light brown hairs; integument with small dense punctures. S6 with reddish brown integument; other sterna black and opaque. Allotype ♂: Similar to female but smaller. Body length 7.7 mm (7.4 – 7.7 mm, n=3), forewing length 6.5 mm (6.5 – 7.15 mm, n=3). Head: Subapical teeth shorter and less separated from inner margin of mandible than in female. Malar area three times wider than longer. Facial area with dense pubescence. Vertex with small punctures, denser on ocellocular area. Genal area slightly depressed near upper margin of eyes. Antenna with scape, pedicel and F1 black; F1 and F2 with shallow punctures; rest of antenna brown on interior surface. F1 smaller than F2 or F3. Facial fovea similar to female but smaller and with less punctures; facial fovea not reaching lateral oceli. Mesosoma: Pronotum with shiny integument and silver hairs on anterior margin. Prothoracic spine shorter than in female. Scutum with silver pubescence and few brown hairs; dense and shallow punctures, larger in diameter than in female. Propodeum similar to female but shiner. Scutellum, metanotum, and basal area similar to female. Sides of mesosoma with denser and contiguous punctures toward anterior area of mesepisternum. Pronotal lobe with tuft of whitish hairs, longer than in female. Wings: Similar to female. Tegula brown with rounded margins and sparse and shallow punctures. Legs: Brown integument, shiner on femur. Pubescence silver with brown integument on coxa, trochanter, and femur; lighter on tibia. Light brown malus. Posterior tibial spurs with light brown integument and dark brown apex. Claws bifurcate distally with light brown integument and well developed arolium. Metasoma: Similar to female with shiner integument. S7, S8, and genital capsule and as in Figures 19‒21 .

Type material. Holotype ♀: Guatemala: Huehuetenago : San Antonio Huista, Pinalito. 15.6653, -91.8618; 1- V-2010; 963 m; P. Sagot . Allotype ♂: Guatemala: Huehuetenago : San Antonio Huista, Pinalito. 15.6653, -91.8618; 1-V-2010; 963 m; M. Hurtado . Paratypes: 2♀: Pinalito. 15.6653, -91.8618; 1-V-2010; 963 m; P. Sagot . 2♀, Pinalito. 15.6653 -91.8618; 17-XI-2010; 963 m; M. Hurtado . 2♂: Guatemala: Huehuetenago, San Antonio Huista, Pinalito. 15.6653, -91.8618; 1-V-2010; 963 m; P. Sagot. Holotype and allotype deposited at CNIN , paratypes at ECO–TAP–E.

Etymology. The specific epithet refers to Guatemala, the country with the only locality where the species has been recorded.

Distribution. Only known from the type locality in the Guatemalan part of Chiapas province. Its distribution may be related to tropical montane rain forests, most of which have been transformed to coffee plantations ( Fig. 58 ).

Remarks. In some females, the notch on anterior margin of clypeus is underdeveloped and with deeper punctures on sides of supraclypeal elevation. Pubescence of metanotum may be mixed with short dark hairs.

Figures

FIGURES 15 – 21. Colletes guatemalensis Balboa & Ayala sp. n. 15 — female holotype: habitus, lateral view; 16 — male allotype: habitus, lateral view; 17 — Female paratype: Clypeus; 18 — female holotype: dorsal view of metasoma; 19 — male allotype: S 7; 20 — male allotype: S 8; 21 — 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.