Signiphora plaumanni Woolley & Dal Molin, 2017

Woolley, J. B. & Dal Molin, A., 2017, Taxonomic revision of the flavopalliata species group of Signiphora (Hymenoptera: Signiphoridae), Zootaxa 4315 (1), pp. 1-150 : 87-88

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Signiphora plaumanni Woolley & Dal Molin

n. sp.

Signiphora plaumanni Woolley & Dal Molin , n. sp. A71641 View Materials E3 Figures 317–328 View FIGURES 317 – 320 View FIGURES 321 – 324 View FIGURES 325 – 328

Diagnosis. Fore wing with discal seta; wing venation distinctive, with marginal vein straight, barely curved, and with relatively short setae; ovipositor and ovipositor sheaths short; Mt1 weakly bilobed or almost transverse, with medial portion slightly rounded; Mt8 a thin, transverse strip without a medial incision; antennal clava wide, infuscate in distal ¼, and with a single, finger-like sensillum at apex; scutellum with medial pair of setae closer together than either are to lateral-most setae.

Signiphora plaumanni is most similar to S. perpauca , but can be distinguished from it by the mostly dark mesoscutum (brown in anterior 1/3–½ in S. perpauca ) and metanotum (yellow or mostly yellow in S. perpauca ) and other features given in the key.

Description. Female. Length, anterior margin of pronotum to epiproct apex, 0.44–0.58 mm (n=7). Head yellow with brown band around occiput; antenna pale tan except distal 1/5–1/4 of clava distinctly darker. Medial third of pronotum brown, remainder yellow, mesoscutum mostly brown except posterolateral corners yellow, scutellum, metanotum and medial sclerite propodeum yellow or dusky yellow, contrasting with brown lateral sclerites of propodeum and all of metanotum. Fore wing infuscated from base to apex of venation, with lighter areas at wing base.

Head. Vertex and frons finely and transversely striate. Mandible bidentate, mandibular ducts enlarged apically. Pedicel length:scape length 0.39–0.53; 3 anelli, second anellus 1/3–2.5× length of first, third anellus 2.7–4.5× length of first, clava length:scape length 1.2–1.6.

Mesosoma. Mesoscutum and medial sclerite of propodeum transversely imbricate. Scutellum with 4 setae and 2 campaniform sensilla, the medial pair of setae closer together than either is to the lateralmost setae; medial propodeal sclerite rounded, process on medial sclerite narrowly rounded. Fore wing with discal seta, length:width 3.1–3.7; fore wing LMS:fore wing width 1.1–1.3; marginal vein:stigmal vein 2.3–2.8; marginal vein with 6 dorsal and 2 ventral setae; seta M3 length:marginal vein length 0.46–0.57; apical end of costal cell between seta M1 and M2. Hind wing with margins subparallel, hind wing length:width 6.2–6.7; hind wing width:fore wing width 0.47– 0.56; hind wing LMS:hind wing width 2.0–2.2. Mesofemur with one long and one short spine on posteroapical margin, mesotibial spur with 4 or 5 teeth, mesotibial spur:basitarsus 0.78–0.96; basitarsus:mesotibia 0.59–0.65.

Metasoma. Mt1 weakly bilobed or almost transverse, with medial portion rounded; Length Mt1:length Mt2 1.0–2.0; anterior-most portion of ovipositor lying under Mt3–Mt5; ovipositor length:metasoma length 0.82–0.96; ovipositor sheath length:ovipositor length 0.18–0.23; Ms3–Ms6 with anterior projections very long; Ms6 between midpoint and posterior 3/4 of metasoma and with 6 setae; Mt8 a thin, transverse strip, without a medial incision.

Male. Unknown.

Type material. HOLOTYPE ♀: slide-mounted in Canada balsam, Brazil, Sta. Catarina , Nova Teutonia, 14.xii.1949, F. Plaumann coll., B.M. 1957-341, BMNH (E) 990296 . Holotype deposited in BMNH. PARATYPES: 5 ♀ slide-mounted in balsam and 7 ♀ slide-mounted in Hoyers, data as holotype (BMNH(E) 990291–990294, 990297–990298, 990300–990304) except one ♀ collected 25.xi.1949 (BMNH(E) 990304). Paratypes deposited in BMNH, USNM, TAMU, and Museu Entomológico Fritz Plaumann, Seara, Brazil, with permission of BMNH (E).

Other material examined. ECUADOR: Galápagos: 2 ♀, TAMU-ENTO X0609369, X0609371 ( TAMU).

Biology. Unknown.

Etymology. The species is named after Fritz Plaumann, the collector of the type specimens, and a famous and extraordinary collector of micro-Hymenoptera and other insects, who devoted most of his 92 years to exploring and documenting the insect fauna of his region of Brazil.


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