Centistidea Rohwer, 2023

Ranjith, A. P., Achterberg, Cornelis Van & Priyadarsanan, Dharma Rajan, 2023, A new genus in the braconid subfamily Miracinae from the Oriental region, with descriptions of seven new species from India and Sri Lanka, Zootaxa 5318 (4), pp. 451-473 : 456-457

Key to the Oriental species of the genus Centistidea Rohwer

1. Median carina of propodeum absent behind level of costulae ( Figs 3F , 5F , 9F , 13F )................................. 2

- Median carina of propodeum present behind level of costulae and reaching posterior transverse carina of propodeum ( Figs 7F , 11F )............................................................................................... 15

2. Pterostigma short triangular and without distinct slender triangular apex or vein R1; vein 1RS of fore wing distinctly developed and narrow, up to 0.4 × as long as vein 1M; first flagellomere 1.2–1.6 × as long as second flagellomere [ China, Indonesia, Japan, Korea, Russia]............................................................. Centistidea irruptor (Papp, 1987)

- Pterostigma elongate triangular and with distinct slender triangular apex or with distinct vein R1 ( Figs 4C , 6D , 8C , 10C , 14C ); vein 1RS of fore wing less developed and wider, 0.2–0.3 × as long as vein 1M ( Figs 4C , 6D , 8C , 10C , 14C ); first flagellomere 1.0–1.2 × as long as second flagellomere................................................................... 3

3. Dorsal length of eye 1.4 × temple; mesopleuron dark brown ( Fig. 13D ); propodeum crenulated near posterior transverse carina ( Fig. 13F ); vein R1 of fore wing distinctly vein-like and narrow ( Fig. 14C ) [ India]........................................................................................... Centistidea yamu Ranjith & Priyadarsanan , sp. nov.

- Dorsal length of eye 1.6–3.1 × temple; mesopleuron often yellow ( Figs 3D , 5D , 7D , 9D ); propodeum not crenulated near posterior transverse carina ( Fig. 5F ); vein R1 of fore wing triangular and not vein-like ( Fig. 12C ) or if vein-like then rather wide ( Fig. 14C )........................................................................................... 4

4. Vein 1CUa of fore wing 0.4–0.7 × as long as vein 1Cub....................................................... 5

- Vein 1CUa of fore wing 0.8–1.2 × as long as vein 1Cub....................................................... 9

5. Dorsal length of eye more than 2.0 × temple................................................................ 6

- Dorsal length of eye less than 2.0 × temple................................................................. 7

6. Apex of antenna pale yellowish; scutellum with pits medio-posteriorly separated by 0.50 × diameter of pit; scutellar sulcus shallow without crenulations [ India]........................ Centistidea mellapicalis Ranjith & van Achterberg, 2018

- Apex of antenna pale brown; scutellum with pits medio-posteriorly separated by carina; scutellar sulcus distinctly crenulated [ India]................................................. Centistidea crenulator Ranjith & van Achterberg, 2018

7. OOL 4.0 × POL; face 1.2 × as wide as long; length of malar space 0.8 × basal width of mandible; first metasomal tergite 3.5 × as long as its maximum width [ China]......................................... Centistidea zhaoi Chen & He, 1997

- OOL 1.9–2.4 × POL; face 1.6–1.8 × as wide as long; length of malar space 0.9–1.1 × basal width of mandible; first metasomal tergite 3.2–3.4 × as long as its maximum width.............................................................. 8

8. Scutellar pits separated by width of pit; propodeum yellow and smooth near midlongitudinal carina; dorsal part of metasomal tergite 1 & 2 yellow; hind basitarsus 3.4 × as long as wide [ India].... Centistidea lineator Ranjith & van Achterberg, 2018

- Scutellar pits separated by a carina; propodeum brown and with striae near midlongitudinal carina; dorsal part of metasomal tergite 1 & 2 brown; hind basitarsus 4.1 × as long as wide [ India]...................................................................................................... Centistidea scutellator Ranjith & van Achterberg, 2018

9. Scutellar pits separated by a thin carina ( Figs 3F , 13F )....................................................... 10

- Scutellar pits separated by at least 0.25 × diameter of pit ( Figs 5F , 9F ).......................................... 12

10. Scutellum with oval pits medio-posteriorly; propodeum smooth near midlongitudinal carina; first flagellomere as long as second [ China, Japan, Korea, Russia, Vietnam]..................................... Centistidea mogra (Papp, 1987)

- Scutellum with subrectangular pits medio-posteriorly ( Fig. 3F ); propodeum sculptured near midlongitudinal carina ( Fig. 3F ); first flagellomere longer than second..................................................................... 11

11. OOL 4.2 × POL; first flagellomere 5.8 × as long as wide; mesoscutum and propodeum yellow; hind tibia 8.8 × as long as wide; first metasomal tergite 3.0 × as long as its maximum width [ India]... Centistidea rugator Ranjith & van Achterberg, 2018

- OOL 2.5 × POL; first flagellomere 5.3 × as long as wide; mesoscutum and propodeum mostly brown ( Figs 3E, F ); hind tibia 6.8 × as long as wide; first metasomal tergite 3.5 × as long as its maximum width [ Sri Lanka]................................................................................ Centistidea burwelli Ranjith & Priyadarsanan , sp. nov.

12. First metasomal tergite 2.4 × as long as its maximum width................................................... 13

- First metasomal tergite 2.7–3.2 × as long as its maximum width............................................... 14

13. Pterostigma brown; OOL 2.2 × POL; length of malar space 1.5 × basal width of mandible; clypeus 2.2 × wider ventrally than medially high; hind basitarsus 4.5 × as long as wide........... Centistidea procarinator Ranjith & van Achterberg, 2018

- Pterostigma yellow ( Fig. 6D ); OOL 1.8 × POL; length of malar space 1.1 × basal width of mandible; clypeus 1.5 × wider ventrally than medially high; hind basitarsus 4.0 × as long as wide [ India].......................................................................................... Centistidea flavostigmata Ranjith & Priyadarsanan , sp. nov.

14. Mesoscutum and propodeum brown; fore wing vein 1CUa 0.9 × as long as 1Cub; OOL 2.0 × POL; hind basitarsus 4.5 × as long as wide [ India]............................................... Centistidea cosmopteryxi Ahmad & Pandey, 2019

- Mesoscutum and propodeum yellow ( Figs 9E, F ); fore wing vein 1CUa 1.2 × as long as 1Cub; OOL 2.5 × POL; hind basitarsus 3.6 × as long as wide [ Sri Lanka].............................. Centistidea lanka Ranjith & Priyadarsanan , sp. nov.

15. Junction of propodeal costula pointed posteriorly ( Fig. 7F )................................................... 16

- Junction of propodeal costula pointed anteriorly ( Fig. 11F )................................................... 17

16. Midlongitudinal carina of propodeum not forked anteriorly; pterostigma brown; vein R1 of fore wing indistinct; first metasomal tergite 4.0 × as long as its maximum width; OOL 4.0 × POL [ India]..... Centistidea acrocercopsi Ahmad & Pandey, 2019

- Midlongitudinal carina of propodeum forked anteriorly ( Fig. 7F ); pterostigma yellow ( Fig. 8C ); vein R1 of fore wing distinctly vein-like and wide ( Fig. 8C ); first metasomal tergite 4.5 × as long as its maximum width; OOL 2.4 × POL [ India].................................................................. Centistidea furca Ranjith & Priyadarsanan , sp. nov.

17. Antero-dorsal part of propodeum about 1.5 × as long as metanotum medially; length of eye 1.2 × as long as temple in dorsal view; fore wing vein 1CUa of fore wing slender; first flagellomere as long as second [ China]............................................................................................... Centistidea immitis Wu & Chen, 2000

- Antero-dorsal part of propodeum about 2.5–3.0 × as long as metanotum medially; length of eye 1.8–2.0 × as long as temple in dorsal view; fore wing vein 1CUa of fore wing thickened ( Fig. 12C ); first flagellomere 1.3–1.6 × as long as second...... 18

18. Medio-posterior pits on scutellum circular and without crenulations; clypeus brown, 2.0 × as wide as medially long; metasomal tergite 3 brown; first flagellomere 6.5 × as long as wide [China-Taiwan]....... Centistidea taiwanica (Papp & Chou, 1996)

- Medio-posterior pits on scutellum oval and crenulated ( Fig. 11F ); clypeus yellow ( Fig. 11B ), 2.6 × as wide as medially long; metasomal tergite 3 yellow ( Fig. 12B ); first flagellomere 5.5 × as long as wide [ India].................................................................................. Centistidea nyeringensis Ranjith & Priyadarsanan , sp. nov.

Figures

FIGURE 3. Centistidea burwelli Ranjith & Priyadarsanan sp. nov. holotype, female A) habitus, lateral view; B) head, anterior view; C) head, dorsal view; D) head and mesosoma, lateral view; E) mesosoma, dorsal view; F) propodeum, dorsal view.

FIGURE 4. Centistidea burwelli Ranjith & Priyadarsanan sp. nov. holotype, female A) metasoma, lateral view; B) metasoma, dorsal view; C) wings.

FIGURE 5. Centistidea flavostigmata Ranjith & Priyadarsanan sp. nov., holotype, female A) habitus, lateral view; B) head, anterior view; C) head, dorsal view; D) head and mesosoma, lateral view; E) mesosoma, dorsal view; F) propodeum, dorsal view.

FIGURE 6. Centistidea flavostigmata Ranjith & Priyadarsanan sp. nov., holotype, female A) metasoma, lateral view; B) metasomal tergites 1–3, dorsal view; C) propodeum and metasoma, dorsal view; D) wings, E) antennae.

FIGURE 7. Centistidea furca Ranjith & van Achterberg gen. et sp. nov., holotype, female A) habitus, lateral view; B) head, anterior view; C) head, dorsal view; D) head and mesosoma, lateral view; E) mesosoma, dorsal view; F) propodeum, dorsal view.

FIGURE 8. Centistidea furca Ranjith & van Achterberg gen. et sp. nov., holotype, female A) metasoma, lateral view; B) metasoma, dorsal view; C) wings.

FIGURE 9. Centistidea lanka Ranjith & van Achterberg gen. et sp. nov., holotype, female A) habitus, lateral view; B) head, anterior view; C) head, dorsal view; D) head and mesosoma, lateral view; E) mesosoma, dorsal view; F) propodeum, dorsal view.

FIGURE 10. Centistidea lanka Ranjith & Priyadarsanan sp. nov. holotype, female A) metasoma, lateral view; B) metasoma, dorsal view; C) wings.

FIGURE 11. Centistidea nyeringensis Ranjith & Priyadarsanan sp. nov., holotype, female A) habitus, lateral view; B) head, anterior view; C) head, dorsal view; D) head and mesosoma, lateral view; E) mesosoma, dorsal view; F) propodeum, dorsal view.

FIGURE 12. Centistidea nyeringensis Ranjith & Priyadarsanan sp. nov. holotype, female A) metasoma, lateral view; B) metasoma, dorsal view; C) wings.

FIGURE 13. Centistidea yamu Ranjith & Priyadarsanan sp. nov., holotype, female A) habitus, lateral view; B) head, anterior view; C) head, dorsal view; D) mesosoma, lateral view; E) mesosoma, dorsal view; F) propodeum, dorsal view.

FIGURE 14. Centistidea yamu Ranjith & Priyadarsanan sp. nov. holotype, female A) metasoma, lateral view; B) metasoma, dorsal view; C) wings.