Pantisarthrus, Forster, 1871

Camargo, Luiza Figueiredo, Shimbori, Eduardo Mitio & Penteado-Dias, Angélica Maria, 2020, New Neotropical species of Pantisarthrus Förster, 1871 (Hymenoptera: Ichneumonidae), Zootaxa 4728 (4), pp. 443-452 : 451-452

Key to species of Pantisarthrus (Modified from Van Rossem, 1987)

1 Mesoscutum with a median longitudinal sharp groove.................................. P. isolatus (Benoit)(Oceanic)

- Mesoscutum without a median longitudinal sharp groove...................................................... 2

2 First metasomal tergite long, 2.7–3.0× as long as its apical width, with rough and irregular longitudinal sculpture; profile of tergite trapezoidal; claws of front legs conspicuously stronger than those of mid and hind legs; ovipositor 0.16× length of hind tibia.............................................................. P. gracilis Van Rossem (Western Palaearctic)

- First metasomal tergite length no more than 2.5× as long as apical width; sculpture variable, in some males surpassing 2.5× but in these case the sculpture is coriaceous.................................................................... 3

3 First metasomal tergite never coriaceous................................................................... 4

- First metasomal tergite coriaceous........................................................................ 6

4 First metasomal tergite rugose, with two parallel longitudinal carinae from apex to base ( Fig. 24 )............................................................................................... P. paraitinga sp. nov. (Neotropical)

- First metasomal tergite mostly smooth basally, with posterior half sculpture varying, and with two converging longitudinal carinae ( Figs 6 , 9, 10 , 18 )............................................................................... 5

5 Body mostly black; metasomal tergite 2–7 dark brown, metasomal tergite 2 and 3 with a yellow stripe between them ( Figs 11, 13 ).................................................................. P. flavocingulatus sp. nov. (Neotropical)

- Body dark brown; metasomal tergite 2–7 light brown, metasomal tergite 1 and 2 with a white stripe at the apex ( Figs 1 , 3 )........................................................................... P. communis sp. nov. (Neotropical)

6 Second metasomal tergite and following polished with some irregular puncture, mesoscutum strongly convex, prescutellar groove conspicuously deep........................................... P. rudepunctatus Strobl (Western Palaearctic)

- Second metasomal tergite and others polished without punctures................................................ 7

7 Section gh of radiella absent; first metasomal tergite 2.0–2.6× as long as apical width................................................................................................. P. dispar Van Rossem (Western Palaearctic)

- Section gh of radiella present; first metasomal tergite 1.4–2.3× as long as apical width............................... 8

8 Section gh of radiella equal to or slightly shorter than section dg............................................................................................ P. lubricus (Förster) (Eastern Palaearctic, Western Palaearctic, Nearctic)

- Section gh of radiella longer than section dg.......................... P. luridus Förster (Western Palaearctic, Nearctic)

Figures

FIGURE 1. Distribution map for Neotropical species of Pantisarthrus.

FIGURES 19–25. Pantisarthrus paraitinga sp. nov. Camargo & Penteado-Dias 19, female habitus; 20, head, frontal view; 21, mesosoma, lateral view; 22, carinae of pronotum and mesopleuron, lateral view; 23, propodeum, dorsal view; 24, metasomal tergite 1, dorsal view; 25, setae on flagellomeres.

FIGURES 2–6. Pantisarthrus communis sp. nov. Camargo & Penteado-Dias 2, female habitus; 3 and 4, color variation on clypeus; 5, mesosoma, lateral view; 6 metasoma, dorsal view.

FIGURES 7–10. Pantisarthrus communis sp. nov. Camargo & Penteado-Dias 7, carinae of pronotum and mesopleuron, lateral view; 8, propodeum, dorsal view; 9 and 10, sculpture variation on metasomal tergite 1, dorsal view.

FIGURES 17–18. Pantisarthrus flavocingulatus sp. nov. Camargo & Penteado-Dias 17, male habitus; 18, metasomal tergite 1, dorsal view.

FIGURES 11–16. Pantisarthrus flavocingulatus sp. nov. Camargo & Penteado-Dias 11, female habitus; 12, mesosoma, lateral view; 13, metasoma, dorsal view; 14, head, frontal view; 15, carinae of pronotum and mesopleuron, lateral view; 16, propodeum, dorsal view.