Ctenanthidium versicolor Parizotto & Urban, 2013, sp. nov.
Creators: name: Parizotto, Daniele R.
name: Urban, Danúncia
Publisher: name: Zenodo
Year: 2013
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Megachilidae
Ctenanthidium
Ctenanthidium versicolor

description: Ctenanthidium versicolor sp. nov.
(Figs. 8–10, 13–14, 16–19, 24)
Comments and diagnosis. Head predominantly tinged by yellow and ferruginous; mesoscutum with a reverse Lshaped macula, yellow along anterior edges and ferruginous along lateral edges. Integument of mesoscutum smooth between punctures (Figs. 13–14). Labrum with subapical hairs, plumose in the male; thickened and simple in the female (Fig. 10). The color pattern of head and mesoscutum does not occur in other species and the features of labrum pilosity are clearly unique within the genus.
Description. Holotype male.
Approximate body length 5.5 mm; forewing length 4.5 mm; head width 2.0 mm; eye length 1.3 mm. Color: Integument predominantly black. Head widely tinged by yellow and ferruginous; yellow colored in mandible (except teeth and margins), clypeus, supraclypeal area and lower paraocular area; tinged by yellow and ferruginous in interalveolar area including juxtantennal carina; ferruginous in upper paraocular area extending to vertex and all of gena. Antenna with four basal articles amber, remaining flagellomeres ferruginous (Fig. 8). Mesosoma and metasoma predominantly black except as follows: pronotal lobe with apical ferruginous spot; mesoscutum with reverse L-shaped macula, yellow along anterior edge and ferruginous along lateral edge; axilla and scutellum with yellow subapical band and translucent margin. Tegula amber with pale yellow anterior area; wing membrane mostly black infumated, darker at base and at costal margin (Fig. 13). Legs predominantly amber; middle leg with coxa and trochanter blackened; hind leg with nearly entire coxa, trochanter, femur and two distal tarsomeres blackened (Fig. 17). First tergum with yellow band, narrower at middle, and area posterior to band ferruginous; T2 with lateral yellow macula and very narrow, obsolete, ferruginous dorsal band; T3-T5 with yellow complete band, wider at middle and with area posterior to band ferruginous, apically translucent (Fig. 24); T6-T7 with apical yellow band. Sterna brown; S1 with yellowish ferruginous medial area; S2 with three apical yellow spots; S3 with apical yellow margin, disc yellowish brown.
Pilosity. Predominantly white; labrum with subapical plumose hairs; lower paraocular area, lateral and ventral surfaces of mesepisternum, coxae, trochanters, femora and tibiae with plumose hairs. Terga with translucent, short (<1 PD) yellow setae. Sterna with longer (> 1 PD) plumose hairs, denser and longer at sides.
Punctures. Head densely punctate, sparser and more shallow on clypeus and supraclypeal area. Mesoscutum and mesepisternum with punctures slightly larger and deeper than on head, integument smooth between punctures. Scutellum with punctures slightly larger than mesoscutum. Tegula with shallow punctures at sides, dorsally smooth (Fig. 16). Terga with punctures sparser and shallow than on mesoscutum. Distance between punctures at least a puncture diameter. T2 with smaller, sparser and shallower punctures than T1. T3-T6 with larger, denser and deeper punctures. T7 with smaller punctures and even denser than T6 (Fig. 24).
Description. Paratype female. Differs from male in the following characteristics: Approximate body length 6.6 mm; forewing length 4.7 mm; head width 2.1 mm; eye length 1.4 mm. Color: mandibles blackened; clypeus with large basal ferruginous macula, supraclypeal area and juxtantennal carina blackened (Fig. 9). Fore and middle legs with coxae and trochanters darkish brown; remaining areas of fore leg ferruginous; middle leg with brown femur, except apex ferruginous, tibia ferruginous and tarsomeres brown; hind leg dark brown with ferruginous areas on apex of femora and base of tibiae. Terga black; T1 and T3 with yellow complete band; T2 with lateral yellow maculae; T4-T5 with traces of band, leaving a ferruginous area (Fig. 14, 19). Sterna black.
Pilosity whitish, including scopa. Subapical setae on labrum thickened. (Fig. 10). Punctures as in male.
Type material. Holotype male. Argentina, Tucumán. “ ARGENTINA, Tucumán: / 12 km N El Cadillal / December 3, 1989 / J. G. Rozen & A. Roig” (AMNH). Paratypes males: one specimen with the same date of holotype (DZUP); “ ARGENTINA / Tucumán: 11 Km NW/ Cadillal XII-4-1993 / J. G. Rozen” (AMNH); “ ARGENTINA: Tucumán/ 11 Km NW Cadillal/ XII-1-93 J. G. Rozen” (AMNH); “ARG. – SALTA/ Rosario Lerma/ Fritz - 11.84” (AMNH); “ARG. – SALTA/ Alemania / Peña - 2.92” (AMNH); “ARG. – SALTA/ Cnel. [Coronel] Moldes/ Fritz - 2.95” (AMNH); “ARG. – Córdoba/ Quilpo/ Fritz - 2.80 (AMNH). Paratypes females: “ARG. – SALTA/ Rosario Lerma/ Fritz – X.85 ” (DZUP); one specimen with the same date above except by “Fritz – XII.86 ” (AMNH); “ARG. – SALTA/Sumalao/ Fritz – II.96 ” (AMNH).
Etymology. From the Latin versicolor (= various colors) in reference to the coloration from head and mesosoma of this species.
description: Published as part of Parizotto, Daniele R. & Urban, Danúncia, 2013, Contribution to the knowledge of the Anthidulum Michener and Ctenanthidium Urban (Hymenoptera, Apidae) with new species from Argentina and Peru, pp. 311-318 in Zootaxa 3609 (3) on pages 314-316, DOI: 10.11646/zootaxa.3609.3.5, http://zenodo.org/record/218946