Handaoia plaumanni, Bordera & Broad, 2021

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, European Journal of Taxonomy 757, pp. 80-101 : 90-94

publication ID	https://doi.org/ 10.5852/ejt.2021.757.1415
publication LSID	lsid:zoobank.org:pub:F95D404B-0A7C-429F-BC4F-AAEDF9DC870C
DOI	https://doi.org/10.5281/zenodo.5056072
persistent identifier	https://treatment.plazi.org/id/7A2E9032-B90C-4EB7-9D7F-139AA2D3D4B9
taxon LSID	lsid:zoobank.org:act:7A2E9032-B90C-4EB7-9D7F-139AA2D3D4B9
treatment provided by	Felipe
scientific name	Handaoia plaumanni
status	sp. nov.

Treatment

Handaoia plaumanni sp. nov.

urn:lsid:zoobank.org:act:7A2E9032-B90C-4EB7-9D7F-139AA2D3D4B9

Figs 1D View Fig , 5–6 View Fig View Fig , 9B View Fig

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 View Fig , arrow); sternaulus very short and weak, reaching at most 0.3× the length of the mesopleuron ( Figs 5E View Fig , 6D View Fig ); juxtacoxal carina absent ( Figs 5H View Fig , 6E View Fig ); area externa of propodeum confluent with area dentipara ( Figs 1D View Fig , 6F View Fig ).

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 About NHMUK . GoogleMaps

Paratypes BRAZIL • 1 ♀; same collection data as for holotype; 13 Apr. 1938; B.M. 1938-682; NHMUK010636382 About NHMUK GoogleMaps • 1 ♂; same collection data as for preceding; 10 May 1938; B.M. 1938-682; NHMUK010636384 About NHMUK GoogleMaps • 1 ♀; same collection data as for preceding; 13 May 1938; B.M. 1938-682; NHMUK010636395 About NHMUK GoogleMaps • 1 ♂; same collection data as for preceding; 7 Jun. 1938; B.M. 1938-458; NHMUK010636385 About NHMUK GoogleMaps .

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 View Fig ); 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 View Fig ); occipital carina gently V-shaped medially ( Fig. 5D View Fig ); malar space 1.17–1.33 × basal width of mandible; face weakly swollen medially ( Fig. 5C View Fig ); clypeus ( Fig. 5C View Fig ) 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 View Fig ); 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 View Fig ); mesoscutum slightly convex, flat posteriorly, notauli very weak anteriorly or absent ( Fig. 5B, D View Fig ), 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 View Fig ); juxtacoxal carina absent ( Fig. 5H View Fig ); propodeum ( Figs 1D View Fig , 5I View Fig ) 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 View Fig , 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 View Fig , 5J View Fig ) 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 View Fig ) smooth and shiny, glabrous; remaining tergites ( Fig. 5F–G View Fig ) 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 View Fig ) 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 View Fig ). Mesosoma ( Fig. 5B, D–E View Fig ) mostly orange-brown; mesoscutum tending to entirely dark brown, sometimes anterior part of propodeum infuscate. Metasoma ( Fig. 5F–G View Fig ) brown, tergites I–II and sometimes anterior part of III light brown, remaining tergites dark brown. Legs ( Fig. 5A View Fig ) light brown, distal tarsomeres dark brown, sometimes fore and mid coxae, part of hind coxa and all trochanters and trochantelli lighter. Wings ( Fig. 5A View Fig ) 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 View Fig ); 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 View Fig ); malar space 1.33 × basal width of mandible; clypeus about 1.7 × as wide as high; flagellum filiform ( Fig. 6A–B View Fig ) 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 View Fig ); 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 View Fig ) but antenna entirely dark brown.In one paratype (NHMUK010636385), mesosoma and metasoma mostly dark brown ( Fig. 6A, D View Fig ).

Otherwise similar to female.