Pseudochalcura pauca Heraty
Creators: name: Torréns, Javier
Publisher: name: Zenodo
Year: 2016
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Eucharitidae
Pseudochalcura
Pseudochalcura pauca

description: Pseudochalcura pauca Heraty
(Figs 9–11, 16)
Pseudochalcura pauca Heraty, 1986: 202 –205 (description), holotype ♀, Argentina: Córdoba, Dean Funes (California Academy of Science, USA); Heraty, 2002: 224 (catalog).
Diagnosis. Both sexes with head subtriangular, 1.5 – 1.7× as broad as high (Fig. 11), antenna 8-segmented, mesocoxa with lateral carina, metatibial spur present, fore wing disc with very short setae, appearing bare, and submarginal vein and costal cell without setae; male with basal four flagellomeres pectinate (Fig. 10); female with Gs1 densely micropunctate basally.
Differs from P. chilensis (most similar species) by females having 8 antennal segments (versus 10) with the basal flagellomeres strongly serrate with acute apices (versus flagellomeres lobate), and Gs1 granular (versus striate); males have 8 antennal segments (versus 11), with the last two flagellomeres fused, much longer than broad and subdivided (Fig. 10), and the metafemur well expanded.
Description. Female. Description and characterization in accordance with that provided by Heraty (1986).
Male. Length 3.0 – 3.2 mm. Dark brown to black; lateral lobes and pleura slightly lighter; head and gaster black; coxae and basal ¾ of femora dark brown; antenna light brown, lighter closer to apex; apex of femora and rest of legs yellowish (Fig. 9).
Head 1.5 – 1.7× as broad as high. POL 3.4× LOL; POL 2.1 – 2.4× OOL (Fig. 11). Frons and face irregularly striate; clypeus and supraclypeal striate. Eyes separated by 2.0 – 2.1× their height. Malar space 0.8 – 0.9× height of eye. Labrum with 5 digits. Antenna 8-segmented, four basal flagellomeres pectinate; branches slightly flattened, dorsal branch of F2 5.0 – 7.0× as long as broad, 3.5 – 4.0× as long as basal length and 0.6× as long as head height; F6 serrate and F7 (clava) much longer than broad and bisegmented (Fig. 10).
Mesosoma mostly with areolate sculpture, interstices broad and smooth, asetose (Figs 9, 16). Pronotum and prepectus areolate with broader interstices. Mesoscutum 1.9 – 2.0× as broad as long. Mesoscutellum 1.2 – 1.3× as long as maximum width of scutellar disc (Fig. 16). Propodeal disc slightly rounded, alveolate with broad interstices. Propleuron with same sculpture as pronotum and prepectus; mesopleuron and metapleuron areolate, femoral groove deeply impressed and smooth; callus with a few erect setae. Metacoxa semi-globose to globose, 1.2 – 1.4× as long as broad, bare; mesocoxa with a lateral carina. Metafemur expanded medially, 3.8 – 4.0× as long as broad; with short, sparse, appressed setae laterally. Metatibia with semi-erect setae dorsally and dense appressed setae ventrally; one metatibial spur present.
Petiole 3.4 – 3.7× as long as broad and 1.8 – 2.0× as long as metacoxa; slightly curved in profile and smooth (Fig. 9). Gaster semi-globose, Gt1 smooth with a few scattered short setae.
Distribution. Argentina: Córdoba, Salta.
Material examined. 2♂: ARGENTINA: Salta: Cabeza de Buey, 24º47'38"S 64º01'56"W, 19.xii.2003, P. Fidalgo, UCRC _ ENT 0 0 357441 (1♂, IFML); same location, 15.iii.2007, J. & J. Heraty, J. Torréns, UCRC _ ENT 0 0 435928 (1♂, UCRC).
description: Published as part of Torréns, Javier, 2016, A new species of Pseudochalcura Ashmead (Chalcidoidea: Eucharitidae) from Argentina with descriptions of alternate sexes of two other species, pp. 239-245 in Zootaxa 4067 (2) on pages 242-243, DOI: 10.11646/zootaxa.4067.2.8, http://zenodo.org/record/259141