Chalcis, Fabricius, 1787

Saguiah, Pâmella Machado, Molin, Ana Dal & Tavares, Marcelo Teixeira, 2020, The South American species of Chalcis Fabricius (Hymenoptera: Chalcididae), Zootaxa 4885 (3), pp. 353-383 : 355-356

publication ID	https://doi.org/ 10.11646/zootaxa.4885.3.3
publication LSID	lsid:zoobank.org:pub:4DA945AD-653E-4E8A-A33D-D52E2F9E44D3
DOI	https://doi.org/10.5281/zenodo.4330383
persistent identifier	https://treatment.plazi.org/id/039B87F3-FFC0-BB70-FF6F-FA0EFA36FCBC
treatment provided by	Plazi
scientific name	Chalcis
status

Treatment

Key to species of Chalcis View in CoL View at ENA from South America based on females

1 Mesepisternum mostly smooth and shiny over least upper quarter ( Fig. 11e View FIGURE 11 ); mesotibial spur distinctly longer than half width of mesotibial apex; outer face of metafemur with interstices moderately to very wide, smooth and shiny ( Figs 12a View FIGURE 12 , 19e View FIGURE 19 ); tarsal claws falcate ( Figs 3f View FIGURE 3 , 11f View FIGURE 11 ).............................................................................. 2

- Mesepisternum mostly sculptured ( Figs 5e View FIGURE 5 , 8e View FIGURE 8 , 14e View FIGURE 14 ); mesotibial spur at most as long as half width of mesotibial apex; outer face of metafemur with interstices narrow and sculptured, at least finely coriaceous ( Figs 1f View FIGURE 1 , 6b View FIGURE 6 ); tarsal claws slightly curved ( Figs 1e View FIGURE 1 , 6a View FIGURE 6 , 15a View FIGURE 15 ).......................................................................................... 5

2 Antennal anellus shorter than wide ( Fig. 11d View FIGURE 11 ); propodeum with anterosublateral area areolate-rugose ( Fig. 12b View FIGURE 12 ); protarsomeres 4 and 5 without a pair of peg-like spines ventrally; Fu1 1.6× as long as Fu2 ( Fig. 11d View FIGURE 11 ); hind leg and gaster dark amber ( Figs 11a, b View FIGURE 11 ); hypopygial median projection of female apically weakly sclerotized, translucent, and without dense set of short appressed bristles ( Fig. 12c View FIGURE 12 ).................................................................. Chalcis periotoi sp. nov.

- Antennal anellus longer than wide ( Figs 3e View FIGURE 3 , 17d View FIGURE 17 , 19d View FIGURE 19 ); propodeum with anterosublateral area mostly coriaceous, not areolate ( Figs 4b View FIGURE 4 , 18b View FIGURE 18 , 19f View FIGURE 19 ); protarsomeres 4 and 5 with a pair of peg-like spines ventrally ( Figs 3f View FIGURE 3 , 17e View FIGURE 17 ); Fu1 at most 1.5× as long as Fu2 ( Figs 3e View FIGURE 3 , 17d View FIGURE 17 , 19d View FIGURE 19 ); hind leg and gaster black or dark brown except usually with yellow spots; hypopygial median projection of female without evident weakly sclerotized apex, but with dense set of short appressed bristles ( Figs 4c View FIGURE 4 , 20a View FIGURE 20 )............. 3

3 Metafemur ventrally with an inner basal tooth ( Fig. 18a View FIGURE 18 ); petiole 5.2× as long as wide........... Chalcis quechua sp. nov.

- Metafemur ventrally without inner basal tooth; petiole at most 4.6× as long as wide................................. 4

4 Interantennal projection with median carina extending to median ocellus ( Fig. 3d View FIGURE 3 ); metafemur with 13–15 ventral teeth along outer margin ( Fig. 4a View FIGURE 4 ); propodeum with a well-defined pentagonal areola medial to adpetiolar area, areola with a T- or Y-shaped median carina at posterior margin ( Fig. 4b View FIGURE 4 )............................................ Chalcis danunciae sp. nov.

- Interantennal projection with median carina not extending to median ocellus ( Fig. 19c View FIGURE 19 ); metafemur with 11 ventral teeth along outer margin ( Fig. 19e View FIGURE 19 ); propodeum with a narrow areola medial to adpetiolar area ( Fig. 19f View FIGURE 19 ).... Chalcis winstonae sp. nov.

5 Mesosoma entirely black ( Fig. 1b View FIGURE 1 ); lower face bulging above clypeus ( Fig. 1d View FIGURE 1 ); malar space 0.8× eye height ( Fig. 1c View FIGURE 1 ); metatarsomere 5 slightly longer than any of metatarsomeres 1–4 ( Fig. 2a View FIGURE 2 )............................... Chalcis boi sp. nov.

- Mesosoma with at least some yellow markings dorsally; lower face not bulging above clypeus; malar space at most 0.7× eye height; metatarsomere 1 slightly longer than any of metatarsomeres 2–5.......................................... 6

6 Petiole 3.2–3.7× as long as wide, cylindrical ( Fig. 5a View FIGURE 5 ); metafemur ventrally with outer basal tooth close to second tooth ( Fig. 6b View FIGURE 6 ); metatibia with apical spine slender and longer than apical width of metatibia ( Fig. 6b View FIGURE 6 ); protarsal claws ventrally with 4 or 5 basal spines ( Fig. 6a View FIGURE 6 ).......................................................... Chalcis intervalensis sp. nov.

- Petiole at most 2.6× as long as wide, with dorsal face flat ( Figs 8a View FIGURE 8 , 14a View FIGURE 14 ); metafemur ventrally with outer basal tooth distant from second tooth ( Figs 9b View FIGURE 9 , 15b View FIGURE 15 ); metatibia with apical spine either triangular and shorter ( Fig. 9b View FIGURE 9 ) or robust and longer than apical width of metatibia ( Fig. 15c View FIGURE 15 ); protarsal claws ventrally with 2–4 basal denticles ( Figs 9a View FIGURE 9 , 15a View FIGURE 15 )........................ 7

7 Antennal scape with inner face flattened ( Figs 14c, d View FIGURE 14 ); metafemur ventrally with 7–9 teeth along outer margin ( Fig. 15b View FIGURE 15 ); metatibia with apical spine robust and longer than apical width of metatibia ( Fig. 15c View FIGURE 15 ); tarsomeres 4 and 5 pubescent, at least laterally, and with a pair of distal setae similar to basal tarsomeres ( Fig. 14f View FIGURE 14 ); protarsal claws ventrally with 3 or 4 basal denticles followed by 3 peg-like setae ( Fig. 15a View FIGURE 15 )............................................. Chalcis pilicauda (Cameron) View in CoL

- Antennal scape with inner face sinuous ( Fig. 8d View FIGURE 8 ); metafemur ventrally with 10–12 teeth along outer margin ( Fig. 9b View FIGURE 9 ); metatibia with apical spine triangular and about as long as apical width of metatibia ( Fig. 9b View FIGURE 9 ); tarsomeres 4 and 5 almost bare, mostly smooth and shiny, with inconspicuous, short and sparse pubescence ( Fig. 8f View FIGURE 8 ); protarsal claws ventrally with 2 or 3 basal denticles followed by 3 curved setae ( Fig. 9a View FIGURE 9 )......................................... Chalcis ornatifrons (Cameron) View in CoL