Horismenus saueri Pikart, 2024

Pikart, Tiago G., Schoeninger, Karine, Costa, Valmir A., Hansson, Christer, Zanuncio, José C. & Serrão, José E., 2024, Nine new species of Horismenus Walker (Hymenoptera: Eulophidae) in Brazil, with an emphasis on the fauna of one of the largest tropical forests on the planet, the Atlantic Forest, Zootaxa 5453 (1), pp. 33-62 : 57-60

publication ID

https://doi.org/ 10.11646/zootaxa.5453.1.2

publication LSID

lsid:zoobank.org:pub:5AE6BDB5-3725-4D55-B605-7E6042189C1C

DOI

https://doi.org/10.5281/zenodo.11233405

persistent identifier

https://treatment.plazi.org/id/9C5E87AA-670C-5734-FF0C-F8AEFB3DFC7D

treatment provided by

Plazi

scientific name

Horismenus saueri Pikart
status

sp. nov.

Horismenus saueri Pikart , Costa & Hansson, sp. nov.

Figs 82–90 View FIGURES 82–84 View FIGURES 85–90

Type material. Holotype ♀ point mounted, with label “[ Campinas ], São Paulo, BRASIL, 17/8/1939, HFG Sauer ”, “371.”, “ IB-CBE nº 00023” (deposited in MZUSP) . Paratypes. 11♀, with same label data as holotype, but with unique-identifier, IB-CBE nº 00021, 00022, 00024 e 02107–02114 (5♀ MZSP, 4♀ BMNH, 2♀ IB-CBE) .

Type condition. Holotype and paratypes in good condition, except for one paratype with left antenna missing the last flagellomere.

Diagnosis. Antennal scrobes joining below frontofacial sulcus ( Fig. 84 View FIGURES 82–84 ); malar sulcus present; mesoscutum with strong raised reticulation ( Fig. 89 View FIGURES 85–90 ); mesoscutellum smooth and shiny ( Fig. 89 View FIGURES 85–90 ); mesoscutum metallic bluishgreen with golden luster, mesoscutellum black shiny ( Fig. 83 View FIGURES 82–84 ); propodeal callus with 2 setae; femora and tibiae yellowish brown ( Fig. 82 View FIGURES 82–84 ); eyes large and frons narrow ( Fig. 85 View FIGURES 85–90 ), DE/DO= 2.3; hind tibial spur short, LS/LT= 0.2; gaster conspicuously pilose ( Fig.90 View FIGURES 85–90 ). Similar to Horismenus argus Hansson , but posterior ocellus closer to occipital margin than to eye, malar sulcus present, midlobe of mesoscutum with completely raised reticulation ( Fig. 89 View FIGURES 85–90 ) and hind tibial spur shorter.

Description. Female. Length of body 2.5–2.7 mm.

Color. Scape, pedicel and flagellum metallic bluish green to metallic dark blue ( Fig. 84 View FIGURES 82–84 ). Lower frons black shiny, malar space metallic golden green, remaining parts of frons blue to metallic bluish green ( Fig. 84 View FIGURES 82–84 ); vertex metallic golden green. Mesoscutum metallic bluish green with golden tinges ( Fig. 83 View FIGURES 82–84 ). Mesoscutellum black shiny, lateral and posterior margins with dark bluish green to golden green tinges ( Fig. 83 View FIGURES 82–84 ). Propodeum metallic bluish green with golden tinges, some reticulate parts black shiny ( Fig. 83 View FIGURES 82–84 ). Coxae metallic dark blue; femora, tibiae and tarsi yellowish brown to pale brown ( Fig. 82 View FIGURES 82–84 ). Wings hyaline. First gastral tergite with anterior one-third to half metallic bluish green with golden tinges, remainder black; remaining tergites black.

Head. Antennae as in Fig. 86 View FIGURES 85–90 . Lower frons with strong raised reticulation, remaining parts of frons smooth and shiny to weakly reticulate ( Fig. 85 View FIGURES 85–90 ); frontofacial sulcus V-shaped, incomplete, and not reaching eyes; antennal scrobes joining below frontofacial sulcus ( Fig. 84 View FIGURES 82–84 ). Malar sulcus present. Vertex ( Fig. 87 View FIGURES 85–90 ) with raised reticulation laterally, area in front of anterior ocellus and within ocellar triangle with engraved reticulation; median groove present posteriorly. Occipital margin slightly rounded.

Mesosoma. Mesoscutum ( Fig. 89 View FIGURES 85–90 ) with strong raised reticulation; notauli distinct. Mesoscutellum ( Fig. 89 View FIGURES 85–90 ) smooth and shiny; lateral mesh-rows almost reaching the mesoscutellar foveae. Metascutellum convex, smooth and shiny, with two foveae anteriorly. Propodeum ( Fig. 88 View FIGURES 85–90 ), including anterolateral foveae, smooth and shiny, median carina weakly reticulate; submedian grooves, nucha and plicae with strong raised reticulation; anterolateral foveae wide with lateral margins rounded ( Fig. 88 View FIGURES 85–90 ); propodeal callus with 2 setae. Coxae weakly reticulate. Fore wing with speculum closed posteriorly, with 21–27 admarginal setae, costal cell bare.

Metasoma. Gaster pilose ( Fig. 90 View FIGURES 85–90 ), with first tergite smooth and shiny with a large area in the posterior half with reticulation to reticulate laterally and punctuated medially.

Ratios. DE/DO 2.3; WH/DE 4.4; HE/MS/WM 3.6/1.0/1.9; POL/OOL/POO 6.4/1.5/1.0; WH/WT 1.1; LW/LM/ HW 1.8/1.2/1.0; PM/ST 1.3; LC/WC 4.1; WG/WC 0.6; LS/LT 0.2; LP/WP not measurable; MM/LG 0.8.

Male. Unknown.

Etymology. The specific name is in honor of the collector of the type-material of this species, Henrique F. G. Sauer (in memoriam).

Distribution. Brazil (Campinas, São Paulo State).

Hosts. Unknown.

Species identification. Using the key in Hansson (2009), females run to subkey F, couplet 28, first alternative, where this species can be distinguished from H. argus as mentioned above under diagnosis.

MZUSP

Museu de Zoologia da Universidade de Sao Paulo

MZSP

Sao Paulo, Museu de Zoologia da Universidade de Sao Paulo

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Hymenoptera

Family

Eulophidae

Genus

Horismenus

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