Syngaster (Marsh, 1988)
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publication ID |
https://doi.org/ 10.1080/00222930600790653 |
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persistent identifier |
https://treatment.plazi.org/id/9556878B-4B4D-7869-9FE9-373AFBA3F9A7 |
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treatment provided by |
Carolina |
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scientific name |
Syngaster |
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Key to species of Syngaster View in CoL View at ENA
1. Occipital carina absent ( Figure 7c View Figure 7 ).............. 2
– Occipital carina distinct and almost complete ( Figure 2h View Figure 2 )....... 3
2. Metapleuron and propodeum fused, not separated by distinct suture; mesosoma pale red-brown ( Figure 7d View Figure 7 ); scape entirely yellow-brown ( Figure 7d View Figure 7 ); legs yellowbrown, hind tibia in apical two-thirds and hind tarsus dark red-brown to black; metasomal tergites 3–6 with wide milk-white bands posteriorly ( Figure 7e View Figure 7 ); hind coxa with rather distinct ventroanterior corner; body length 9.7 mm S. tricolor sp. nov.
– Metapleuron and propodeum separated by distinct punctate suture; mesosoma black ( Figure 2a View Figure 2 ); scape black, pale apically ( Figure 2a View Figure 2 ); legs entirely black; metasomal tergites 3–6 without white bands posteriorly ( Figure 2a, c View Figure 2 ); hind coxa without ventroanterior corner; body length 5.2 mm ... S. crypticus sp. nov.
3. Propodeum mostly milk-white ( Figure 5b View Figure 5 ) ( Australia)........ 4
– Propodeum red-yellow or sometimes darker ( Figure 6d View Figure 6 ) (New Guinea)... 5
4. Metapleuron separated from propodeum by distinct punctate suture ( Figure 5a View Figure 5 ) along which these sclerites meet at an angle (i.e. propodeal and metapleural surfaces not continuously rounded); first metasomal tergite 1.2–1.5 times as long as its apical width ( Figure 5a View Figure 5 ); mid and hind coxae black, rarely mid coxa redbrown; metasoma behind first tergite entirely black, sometimes apically brown; mesosoma (except propodeum) black; face without median protuberance above clypeus (seen laterally); body length 6.0– 12.5 mm .... S. lepidus Brullé
– Metapleuron and propodeum fused, not separated by distinct suture, surfaces continuously rounded ( Figure 6a View Figure 6 ); first metasomal tergite almost as long as its apical width; mid and hind coxae milk-white; metasoma behind first tergite mostly milk-white, with black basal stripes on all tergites ( Figure 6a View Figure 6 ); mesosoma (except propodeum) light red-brown, propleuron yellow ( Figure 5h View Figure 5 ); face with distinct median protuberance above clypeus (seen laterally); body length 8.2–8.5 mm
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