Holocynips, Kieffer, 1910

Nicholls, James A., Furlan, Nick E. & Melika, George, 2023, Holocynips illinoiensis, sp. nov., a new species of oak gall wasp (Hymenoptera: Cynipidae) from the USA, Zootaxa 5301 (4), pp. 469-485 : 470-471

Key to asexual generation females of Holocynips species

1. Notaulus complete ( Figs 9 , 24 , 44 , 55 ).................................................................... 2

- Notaulus incomplete in anterior 1/3 ( Fig. 35 )......................................................... hartmani

2. Antenna with 11 flagellomeres ( Fig. 21 ); body, antenna, legs uniformly reddish brown ( Figs 17–27 )................. badia

- Antenna with 12–13 flagellomeres ( Figs 5 , 52 ), body not uniformly coloured, primarily brown but with black stripes on mesoscutum along anterior parallel and parapsidal lines, mesoscutellar foveae and propodeum also entirely or partially black ( Figs 1–12 , 38–47 , 48–58 ).............................................................................. 3

3. Antenna with 13 flagellomeres ( Fig. 52 ), prominent part of ventral spine of hypopygium 8.0–10.0× as long as broad in ventral view ( Figs 47 , 58 )..................................................................................... 4

- Antenna with 12 flagellomeres ( Fig. 5 ), prominent part of ventral spine of hypopygium 3.5–4.0× as long as broad in ventral view ( Fig. 12 )......................................................................... illinoiensis , sp. nov.

4. Head in front view with dense white setae ( Fig. 48 ), mesoscutum with dense white setae, especially beside notauli and between anterior parallel lines, anterior parallel line extending to a maximum 1/3 of mesoscutum length ( Fig. 55 ), 2nd metasomal tergum smooth, all subsequent terga with minute punctures ( Fig. 58 ).............................................. maxima

- Head in front view without or with only a very few white setae ( Fig. 38 ), mesoscutum with very few setae, anterior parallel line extending to half length of mesoscutum ( Fig. 44 ), 2nd metasomal tergum and all subsequent terga with punctures ( Fig. 47 )............................................................................................... humicola

Figures

FIGURES 7–10. Holocynips illinoiensis, sp. nov., asexual female. 7, mesosoma, lateral view. 8, mesoscutum, dorsal view. 9, mesoscutellum, dorsal view. 10, metascutellum and propodeum, posterodorsal view.

FIGURES 23–27. Holocynips badia (Bassett), asexual female. 23, mesosoma, lateral view. 24, mesoscutum, dorsal view. 25, mesoscutellum, dorsal view. 26, metascutellum and propodeum, posterodorsal view. 27, metasoma, lateral view.

FIGURES 43–47. Holocynips humicola (Kinsey), asexual female. 43, mesosoma, lateral view. 44, mesoscutum, dorsal view. 45, mesoscutellum, dorsal view. 46, metascutellum and propodeum, posterodorsal view. 47, metasoma, lateral view.

FIGURES 54–58. Holocynips maxima (Weld), asexual female. 54, mesosoma, lateral view. 55, mesoscutum, dorsal view. 56, mesoscutellum, dorsal view. 57, metascutellum and propodeum, posterodorsal view. 58, metasoma, lateral view.

FIGURES 34–37. Holocynips hartmani (Weld), asexual female. 34, mesosoma, lateral view. 35, mesosoma, dorsal view. 36, metascutellum and propodeum, posterodorsal view. 37, metasoma, lateral view.

FIGURES 17–22. Holocynips badia (Bassett), asexual female. 17–20, head: 17, frontal view, 18, dorsal view, 19, posterior view, 20, lateral view. 21, antenna. 22, mesosoma and propleura, frontal view.

FIGURES 1–6. Holocynips illinoiensis, sp. nov., asexual female. 1–4, head: 1, frontal view, 2, dorsal view, 3, posterior view, 4, lateral view. 5, antenna. 6, mesosoma and propleura, frontal view.

FIGURES 48–53. Holocynips maxima (Weld), asexual female. 48–51, head: 48, frontal view, 49, dorsal view, 50, posterior view, 51, lateral view. 52, antenna. 53, mesosoma and propleura, frontal view.

FIGURES 38–42. Holocynips humicola (Kinsey), asexual female. 38–41, head: 38, frontal view, 39, dorsal view, 40, posterior view, 41, lateral view. 42, mesosoma and propleura, frontal view.

FIGURES 11–12. Holocynips illinoiensis, sp. nov., asexual female. 11, fore wing. 12, metasoma, lateral view.