Handaoia urceus, 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 : 96-99

Handaoia urceus sp. nov.

urn:lsid:zoobank.org:act:5413C7C8-D785-4583-803F-0C1E75B7EA9E

Figs 1F , 8 , 9B

Diagnosis

Handaoia urceus sp. nov. can be distinguished from all other New World species by the combination of the following characters: apophysis of propodeum as a low transverse rounded crest ( Fig. 8I , arrow); tergite II finely granulate ( Fig. 8D ); juxtacoxal carina strong anteriorly, weak posteriorly, joining submetapleural carina at its half length ( Fig. 8H , arrow); area externa of propodeum separated from area dentipara by strong carina ( Fig. 1F ); inner side of area externa about 8.0× as long as inner side of area dentipara ( Fig. 1F ).

Etymology

From the Latin for ‘pitcher’, named after the flask- or pitcher-shaped combined area basalis + superomedia. A noun in apposition.

Material examined

Known only from the holotype female.

Holotype BRAZIL • ♀; Nova Teutonia ; 27º11′ S, 52º23′ W; 8 Feb. 1939; F. Plaumann leg.; B.M. 1939-181; B.M. Type Hym 3b.2873; NHMUK010636380 .

Description

Female

MEASUREMENTS. Body length (without ovipositor) 4.3 mm. Fore wing 3.7 mm long.

HEAD. Finely granulate, matt, distinctly narrowed behind eyes, occiput very concave centrally in dorsal view ( Fig. 8B–C ); gena 0.22 × length of eye in dorsal view; posterior ocellus separated from eye by 1.0 × its maximum diameter; distance between posterior ocelli 1.0× maximum ocellar diameter ( Fig. 8C ); occipital carina gently V-shaped medially ( Fig. 8E ); malar space 1.44 × basal width of mandible; face moderately swollen medially ( Fig. 8B ); clypeus ( Fig. 8B ) weakly convex, gently granulate with scattered punctures, apex slightly rounded, about 1.6× as wide as high; mandible slightly tapered to apex, ventral tooth approximately same length as upper tooth; maxillary palp long, almost reaching middle coxa; flagellum widened in middle, tapered towards apex ( Fig. 8A ), flagellomeres 8–18 flattened ventrally; flagellum with 22 segments, length-thickness ratios: 1 st segment = 4.9, 2 nd = 6.1 and 10 th = 1.13.

MESOSOMA. Finely granulate and matt ( Fig. 8E, G ); mesoscutum ( Fig. 8E, G ) convex, notauli moderately deep anteriorly, reaching about 0.3 × distance to scuto-scutellar groove; scutellum moderately convex, without lateral carinae; sternaulus moderately deep, reaching about mid-point of mesopleuron ( Fig. 8G ); juxtacoxal carina strong anteriorly, weak posteriorly, joining submetapleural carina at mid length ( Fig. 8H , arrow); propodeum ( Figs 1F , 8I ) with strong and conspicuous carinae; area superomedia confluent with area basalis and separated from area petiolaris; inner side of area externa about 8.0 × as long as inner side of area dentipara; inner side of area dentipara 0.25 × length of outer side; area spiracularis confluent with area lateralis; posterior transverse carina strongly elevated, forming a low transverse crest joining lateral longitudinal carina ( Fig. 8I , arrow). Length of hind femur 4.2 × its height. Hind wing with vein cu-a about 1.0 × as long as abscissa of CU between M and cu-a.

METASOMA. Tergite I ( Figs 1F , 8D ) finely granulate, matt, about 1.70 × as long as its maximum width; postpetiole laterally and posteriorly tending to fine strigosity; lateromedian and lateral longitudinal carinae strong, reaching at least 0.8× length of tergite; tergite II ( Fig. 8D, F ) finely granulate, shiny; remaining tergites ( Fig. 8D, F ) smooth and shiny with inconspicuous setiferous punctures. Ovipositor sheath about 0.54× as long as hind tibia.

COLOUR. Head ( Fig. 8B–C ) dark brown tending to be more reddish on clypeus and mandibles; palpi light brown; antenna with scape, pedicel and flagellomeres I–II (III) light brown, remaining flagellomeres dark brown, distal part of flagellomere 4 to flagellomere 7 dorsally white ( Fig. 8A ). Mesosoma ( Fig. 8E– G ) entirely orange. Metasoma ( Fig. 8D–F ) with a gradient from orange at anterior of tergite I to dark brown on posterior tergites, posterior rim of tergites I–III yellowish. Legs ( Fig. 8A ) light brown, distal tarsomeres dark brown, fore and mid coxae, part of hind coxa and all trochanters and trochantelli lighter. Wings ( Fig. 8A ) slightly infuscate.

Male

Unknown.

Figures

Fig. 1. Propodeum and tergite I of Handaoia spp., ♀♀. A. H. cuscoensis Bordera sp. nov., holotype (AEIC).B. H. fritzi sp. nov., holotype (NHMUK).C. H. mercedensisBordera sp. nov., holotype (CEUA). D. H. plaumanni sp. nov., holotype (NHMUK). E. H. ruizcancinoi Bordera sp. nov., holotype (CEUA). F. H. urceus sp. nov., holotype (NHMUK). Scale bars: 0.1 mm.

Fig. 8. Morphology of Handaoia urceus sp. nov., holotype, ♀ (NMHUK). A. Habitus, lateral view. B. Head, front view. C. Head, dorsal view. D. Metasoma, dorsal view. E. Head and mesosoma, dorsal view. F. Metasoma, lateral view. G. Head and mesosoma, dorsolateral view. H. Metapleuron (arrow: juxtacoxal carina). I. Propodeum (arrow: propodeal apophysis). Scale bars: A, D–G = 0.5 mm; B–C, H–I = 0.2 mm.

Fig. 9. Distribution of New World species of Handaoia Seyrig, 1952. A. North and Central America. B. South America.