Rhogasella, Baker, 1917

Oanh, Nguyen Thi, Long, Khuat Dang, Achterberg, Cornelis van & Dao, Nguyen Cam, 2025, Rhogasella Baker, 1917 and Rogasodes Chen & He, 1997 (Hymenoptera: Braconidae: Rogadinae) new for Vietnam, with descriptions of three new species, Zootaxa 5659 (2), pp. 210-222 : 211-212

publication ID	https://doi.org/10.11646/zootaxa.5659.2.4
publication LSID	lsid:zoobank.org:pub:A837D332-E4C4-469E-90D9-4E37259AF44D
DOI	https://doi.org/10.5281/zenodo.15831091
persistent identifier	https://treatment.plazi.org/id/1F7B87B8-FFD3-1A74-FF61-F9CBFA37FC56
treatment provided by	Plazi
scientific name	Rhogasella
status

Treatment

Key to genera and species of Rhogasella View in CoL View at ENA and Rogasodes

1. Hypopygium of female medium-sized, nearly straight ventrally in lateral view and with longitudinal keel baso-ventrally ( Fig. 5G View FIGURE 5 ); hind wing vein SR pigmented medially and apically ( Figs 4J View FIGURE 4 , 5I View FIGURE 5 ); vein 2-SC+R just longitudinal ( Figs 4J View FIGURE 4 , 5I View FIGURE 5 ); first–second tergites longitudinally rugose ( Figs 2G View FIGURE 2 ; 4G, H View FIGURE 4 ; 5E View FIGURE 5 ); medio-basal area on tergite 2 absent or minute ( Figs 2G View FIGURE 2 , 4G View FIGURE 4 , 5E View FIGURE 5 ); lateral crease of tergite 6 more or less sharp ( Figs 2F View FIGURE 2 , 5G View FIGURE 5 ); genus Rhogasella Baker, 1917 View in CoL ................................. 2

- Hypopygium of female large, evenly curved ventrally in lateral view ( Fig. 6B View FIGURE 6 ) and without longitudinal keel baso-ventrally; hind wing vein SR unpigmented medially and apically ( Fig. 6D View FIGURE 6 ); vein 2-SC+R vertical or nearly square ( Fig. 6D View FIGURE 6 ); first–second tergites longitudinally striate ( Fig. 6A View FIGURE 6 1 View FIGURE 1 ); medio-basal area of tergite 2 present ( Fig. 6A View FIGURE 6 2 View FIGURE 2 ); lateral crease of tergite 6 faint ( Fig. 6B View FIGURE 6 1 View FIGURE 1 ); genus Rogasodes Chen & He, 1997 View in CoL .................................................................. 6

2. Pterostigma elliptical ( Fig. 6C View FIGURE 6 1 View FIGURE 1 ), about 5.0 × as long as wide medially; occipital carina nearly straight or distinctly concave dorso-medially....................................................................................... 3

- Pterostigma more or less triangular ( Figs 2H View FIGURE 2 , 4I View FIGURE 4 ), 3.5–3.7 × as long as wide medially; occipital carina evenly arched dorso-medially ( Figs 2A View FIGURE 2 , 4A View FIGURE 4 , 5B View FIGURE 5 )............................................................................. 4

3. Second metasomal tergite without median carina; length of first metasomal tergite subequal to its apical width....................................................................................... Rhogasella lineata Baker, 1917 View in CoL

- Second metasomal tergite with median carina; first metasomal tergite 1.3 × as long as its apical width........................................................................................... Rhogasella straminea Baker, 1917 View in CoL

4. Vein cu-a of fore wing straight ( Fig. 2H View FIGURE 2 ); first metasomal tergite as long as its apical width and entirely yellow ( Figs 2F, G View FIGURE 2 ); hind coxa yellow ( Fig. 1 View FIGURE 1 )............................................... Rhogasella flavicentralis Long , sp. nov.

- Vein cu-a of fore wing slightly curved ( Figs 4I View FIGURE 4 , 5H View FIGURE 5 ); length of first metasomal tergite 1.2–1.3 × its apical width and entirely dark brown or medially largely brown ( Figs 4H View FIGURE 4 , 5E View FIGURE 5 ); hind coxa mostly brown to black ( Fig. 3 View FIGURE 3 )........................ 5

5. Head in anterior view strongly narrowed bellow ( Fig. 4B View FIGURE 4 ); vein 1-CU1 of fore wing as long as vein cu-a ( Fig. 4I View FIGURE 4 ); propleuron brown; hind coxa dark brown, except yellow baso-dorsally; first metasomal tergite entirely blackish brown to black and following tergites entirely dark brown ( Fig. 4H View FIGURE 4 ).................. Rhogasella maculata Long & van Achterberg , sp. nov.

- Head in anterior view more gradually narrowed bellow ( Fig. 5C View FIGURE 5 ); vein 1-CU1 of fore wing 0.5 × vein cu-a ( Fig. 5H View FIGURE 5 ); propleuron yellow; hind coxa yellow, pale brown apically; first metasomal tergite brown medially and yellow latero-apically, the following tergites brown medially and pale yellow laterally ( Fig. 5E View FIGURE 5 )........................ Rhogasella simulata Long , sp. nov.

6. Fore wing vein cu-a slightly postfurcal ( Fig. 6C View FIGURE 6 ) or interstitial (Fig. 9 in Quicke & Shaw, 2005); pterostigma uniformly dirty yellow; mesopleuron and mesosternum pale yellowish brown. Indonesia, Vietnam.............................................................................................. Rogasodes scytaloptericola Quicke & Shaw, 2005 View in CoL

- Fore wing vein cu-a postfurcal to vein 1-M by at least 3.0 × vein width; pterostigma brown; mesopleuron and mesosternum whitish yellow or pitch brown........................................................................... 7

7. First subdiscal cell of fore wing comparatively slender (Fig. 85 in Long et al., 2018) and about 5.0 × longer than wide; vein 1-M of fore wing 0.8 × as long as vein 2-CU1; second metasomal tergite 1.6 × third tergite medially (1.5 × in paratype) (Fig. 88 in Long et al. 2018); mesopleuron and mesosternum cream-white (Fig. 84 in Long et al. 2018)........................... Vietnam................................................................ Rogasodes phongi Long & Hoa, 2018

- First subdiscal cell of fore wing comparatively robust (Fig. 376 in Chen and He 1997) and about 3.0 × longer than wide; vein 1-M of fore wing about as long as vein 2-CU1; second metasomal tergite more than 1.8 × longer than third tergite medially (Fig. 379 in Chen and He 1997); mesopleuron (except spectrum) and mesosternum pitchy brown (Fig. 376 in Chen and He 1997). China................................................................ Rogasodes masaicus Chen and He, 1997 View in CoL