Handaoia plaumanni Bordera & Broad 2021, sp. nov.
Creators: name: Bordera, Santiago
name: Broad, Gavin R.
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Ichneumonidae
Handaoia
Handaoia plaumanni

description: Handaoia plaumanni sp. nov.
urn:lsid:zoobank.org:act: 7A2E9032-B90C-4EB7-9D7F-139AA2D3D4B9
Figs 1D, 5–6, 9B
Diagnosis
Handaoia plaumanni sp.nov. can be distinguished from all other New World species by the combination of the following characters (both male and female): apophysis of propodeum as a low transverse crest (Fig. 5I, arrow); sternaulus very short and weak, reaching at most 0.3× the length of the mesopleuron (Figs 5E, 6D); juxtacoxal carina absent (Figs 5H, 6E); area externa of propodeum confluent with area dentipara (Figs 1D, 6F).
Etymology
This species is named in honour of Dr Fritz Plaumann, illustrious botanist and entomologist based in Brazil, who collected the type series. A noun in the genitive case.
Material examined
Known from three females and two males.
Holotype BRAZIL • ♀; Nova Teutonia; 27º11′ S, 52º23′ W; 24 May 1938; F Plaumann leg.; B.M. 1938-452; B.M. Type Hym 3b.2872; NHMUK010636386.
Paratypes BRAZIL • 1 ♀; same collection data as for holotype; 13 Apr. 1938; B.M. 1938-682; NHMUK010636382 • 1 ♂; same collection data as for preceding; 10 May 1938; B.M. 1938-682; NHMUK010636384 • 1 ♀; same collection data as for preceding; 13 May 1938; B.M. 1938-682; NHMUK010636395 • 1 ♂; same collection data as for preceding; 7 Jun. 1938; B.M. 1938-458; NHMUK010636385.
Description
Female
MEASUREMENTS. Body length (without ovipositor) 2.6–2.9 mm. Fore wing 2.3–2.4 mm long.
HEAD. Moderately coarsely granulate, matt, distinctly narrowed behind eyes, occiput very concave centrally in dorsal view (Fig. 5B–E); gena 0.16–0.25× length of eye in dorsal view; posterior ocellus separated from eye by 0.9–1.0× its maximum diameter; distance between posterior ocelli 0.75–1.3 × maximum ocellar diameter (Fig. 5D); occipital carina gently V-shaped medially (Fig. 5D); malar space 1.17–1.33 × basal width of mandible; face weakly swollen medially (Fig. 5C); clypeus (Fig. 5C) weakly convex, smooth and shiny with scattered punctures, apex almost straight, about 2.0× as wide as high; mandible slightly tapered to apex, ventral tooth approximately same length as upper tooth; maxillary palp relatively short, reaching at most ⅔ length of mesosternum; flagellum widened in middle, tapered towards apex, flagellomeres 8–17 flattened ventrally (Fig. 5A); flagellum with 18 segments, lengththickness ratios: 1 st segment = 4.67–5.0, 2 nd = 5.0–5.33 and 10 th = 1.0.
MESOSOMA. Moderately coarsely granulate, matt (Fig. 5D–E); mesoscutum slightly convex, flat posteriorly, notauli very weak anteriorly or absent (Fig. 5B, D), when present reaching at most 0.3 distance to scuto-scutellar groove; scutellum moderately convex, without lateral carinae; sternaulus very short and weak, as a wide V-shaped depression anteriorly, reaching at most 0.3 × the length of mesopleuron (Fig. 5E); juxtacoxal carina absent (Fig. 5H); propodeum (Figs 1D, 5I) with moderately strong carinae; area superomedia confluent with area basalis and separated from area petiolaris; area externa and area dentipara confluent; area spiracularis confluent with area lateralis; posterior transverse carina forming a very low transverse crest joining lateral longitudinal carina (Fig. 5I, arrow). Length of hind femur 4.0–4.26 × its height. Hind wing with vein cu-a 0.4– 0.6× as long as abscissa of CU between M and cu-a.
METASOMA. Tergite I (Figs 1D, 5J) finely granulate, matt, 1.6–1.8 × as long as its maximum width; lateromedian longitudinal carina absent; lateral longitudinal carina weak, absent posterior to spiracles; tergite II (Fig. 5F–G) smooth and shiny, glabrous; remaining tergites (Fig. 5F–G) smooth and shiny with inconspicuous dense setiferous punctures. Ovipositor sheath about 0.5–0.6 × as long as hind tibia.
COLOUR. Head (Fig. 5B–E) dark brown; antenna with scape and pedicel light brown and flagellomeres 1–4 light brown sometimes infuscate, remaining flagellomeres dark brown, flagellomeres 4–7 dorsally white (Fig. 5A). Mesosoma (Fig. 5B, D–E) mostly orange-brown; mesoscutum tending to entirely dark brown, sometimes anterior part of propodeum infuscate. Metasoma (Fig. 5F–G) brown, tergites I–II and sometimes anterior part of III light brown, remaining tergites dark brown. Legs (Fig. 5A) light brown, distal tarsomeres dark brown, sometimes fore and mid coxae, part of hind coxa and all trochanters and trochantelli lighter. Wings (Fig. 5A) slightly infuscate.
Male
MEASUREMENTS. Body length 2.3–2.9 mm. Fore wing 2.0– 2.6 mm long.
HEAD. Less narrowed behind eyes and less concave centrally in dorsal view than female (Fig. 6C); gena 0.31–0.42 × length of eye in dorsal view; posterior ocellus separated from eye by 1.25–1.33 × its maximum diameter; distance between posterior ocelli 0.9–1.3 × maximum ocellar diameter (Fig. 6C); malar space 1.33 × basal width of mandible; clypeus about 1.7 × as wide as high; flagellum filiform (Fig. 6A–B) with 19 segments, length-thickness ratios: 1 st = segment 5.0, 2 nd = 5.0 and 10 th = 3.4–4.0
MESOSOMA. Notauli absent (Fig. 6C–D); length of hind femur about 4.5–4.6× its heigth.
METASOMA. Tergite I finely granulate, matt, 2.1× as long as its maximum width.
COLOUR.As in female (Fig. 6A–F) but antenna entirely dark brown.In one paratype (NHMUK010636385), mesosoma and metasoma mostly dark brown (Fig. 6A, D).
Otherwise similar to female.
description: Published as part of Bordera, Santiago & Broad, Gavin R., 2021, Six new species of Handaoia Seyrig, 1952 (Hymenoptera, Ichneumonidae, Phygadeuontinae): the first to be described from the New World, pp. 80-101 in European Journal of Taxonomy 757 on pages 90-94, DOI: 10.5852/ejt.2021.757.1415, http://zenodo.org/record/5047683