Chrysidea, Bischoff, 1913

Mita, Toshiharu & Rosa, Paolo, 2019, Redescription of Chrysidea pumiloides Zimmermann, 1956, and description of three new species of Chrysidea from Madagascar (Hymenoptera: Chrysididae), European Journal of Taxonomy 564, pp. 1-20 : 17-18

Key to species of Chrysidea in Madagascar

1. Discoidal cell framed by pigmented strong veins ............................................................................. 2

– Discoidal cell framed by faint nebulous veins .................................................................................. 4

2. T3 with a median small tooth ( Fig. 5F ), double TFC ............................................ C. merina sp. nov.

– T3 without median small tooth, interval between lateral teeth rounded ( Fig. 3F ), single or absent TFC ................................................................................................................................................... 3

3. T2 medial punctures as large as, or larger than those on mesoscutum ............................................... ...................................................................................................... C. bellula Guérin-Méneville, 1842

– T2 medial punctures smaller than those on mesoscutum ................... C. agnata Zimmermann, 1956

4. Lateral margin of mesoscutum adjacent to tegula strongly raised ... C. bicallosa (du Buysson, 1910)

– Lateral margin of mesoscutum adjacent to tegula not raised, at most indicated by rows of deep punctures ........................................................................................................................................... 5

5. T3 medially subtruncate, metanotum produced posteriorly into a point ............................................ ............................................................................................................ C. zimmermanni Bohart, 1988

– T3 variable, not subtruncate, metanotum rounded or humped, not produced posteriorly into a point ........................................................................................................................................................... 6

6. MS about 2.5 MOD, and subparallel, lower face expanded ............. C. bucculenta (Mocsáry, 1908)

– MS about 1.0 MOD or shorter, convergent ...................................................................................... 7

7. TFC absent ( Fig. 1B ) ........................................................................................................................ 8

– TFC present ( Fig. 3B ) ....................................................................................................................... 9

8. Mesoscutellum and metanotum humped ( Fig. 8A, C ), punctures on mesosoma deep and its base rounded; (male) paramere narrowed apically ( Fig. 9D ) ........................................... C. rioae sp. nov.

– Mesoscutellum almost flat and metanotum rounded ( Figs 1A , 2A ), punctures on mesosoma shallow and its base flat; (male) distal apex of paramere flat ( Fig. 9A ) ........................................................... ...................................................................................................... C. pumiloides Zimmermann, 1956

9. T3 with a median tooth or angle, not rounded apicomedially ( Fig. 5F ) ......................................... 10 – T3 apicomedially rouded ( Fig. 3F ) ..................................................................................................11

10. Pronotum with developed sublateral carina, T3 with a distinct median tooth, interval between lateral tooth and median tooth concave ............................................................. C. dido Zimmermann, 1956

– Pronotum without sublateral carina, T3 apicomedially angulate, not forming a median tooth, interval between lateral tooth and median angle substraight .......................... C. phoebe Zimmermann, 1956

11. Mesosoma elongate, in dorsal view fully twice as long as wide at pronotum, metasomal terga extensively coppery gold .......................................................................... C. aurata (Bischoff, 1910)

– Mesosoma not distinctly elongate, in dorsal view at most 1.7 × as long as wide at pronotum, base color of metasomal terga metallic green or blue, at most posterior part of terga ........................... 12

12. T3 extensively coppery, anterior ocellus not larger than some areolae below it ................................ ....................................................................................................................... C. brooksi Bohart, 1988

– T3 not extensively coppery, at most metallic green with golden luster, size of areolae below anterior ocellus variable ............................................................................................................................... 13

13. Maximum diameter of black spots on S2 smaller than midocellus .................................................... ................................................................................................. C. phragmiticola Zimmermann, 1961

– Black spots on S2 larger than anterior ocellus ................................................................................ 14

14. Pronotum with developed sublateral carina (as in Trichrysis ); metatarsi metallic; T3 with strong median carina, lateral teeth acute and large; on T3 interspaces among punctures anteromedially 1.0–2.0 PD apart ................................................................................ C. antiope Zimmermann, 1961

– Pronotum without sublateral carina; metatarsi non-metallic, blackish or testaceous; T3 without strong median carina, at most faintly indicated, lateral teeth blunt and short; punctures on T3 denser, almost subcontiguous ...................................................................................................................... 15

15. Lateral area of mesoscutum with a longitudinal row of distinctly larger and deeper punctures, T3 with large and deep pits of the pit row, black spots on S2 1.5 MOD apart ........................................ .......................................................................................................... C. rhodopis Zimmermann, 1961

– Lateral area of mesoscutum without a row of distinctly large punctures, T3 with small and shallow pits of the pit row, black spots on S2 0.6 MOD apart .......................................... C. vazimba sp. nov.

Figures

Fig. 5. Chrysidea merina sp. nov., holotype, ♀. A. Lateral habitus. B. Head. C. Mesosoma. D. Metasoma. E. Black spots on S2. F. T3. Scale bars = 1.0 mm.

Fig. 3. Chrysidea vazimba sp. nov., holotype, ♀. A. Lateral habitus. B. Head. C. Mesosoma. D. Metasoma. E. Black spots on S2. F. T3. Scale bars = 1.0 mm.

Fig. 1. Chrysideapumiloides Zimmermann, 1956, holotype, ♀. A. Lateral habitus. B. Head. C. Mesosoma. D. Metasoma. E. Black spots on S2. F. T3. Scale bars = 1.0 mm.

Fig. 8. Chrysidea rioae sp. nov., holotype, ♂. A. Lateral habitus. B. Head. C. Mesoscutum, mesoscutellum and metanotum in lateral view. D. Mesosoma. E. Metasoma. F. Black spots on S2. G. T3. Scale bars = 1.0 mm.

Fig. 9. Male genitalia of Chrysidea spp. A. C. pumiloides Zimmermann, 1956. B. C. vazimba sp. nov. C. C. phoebe Zimmermann, 1956. D. C. rioae sp. nov. Scale bars = 0.25 mm.

Fig. 2. Chrysidea pumiloides Zimmermann, 1956, ♂. A. Lateral habitus. B. Head. C. Mesosoma. D. Metasoma. E. Black spots on S2. F. T3. Scale bars = 1.0 mm.