Nysius Dallas 1852
Creators: name: Malipatil, M. B.
Publisher: name: Zenodo
Year: 2010
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Lygaeidae
Nysius

description: Key to the species of Nysius from Australia and the SW Pacific   
1. Femora except apices uniformly black; (outside Australia)......................................................................................... 2  
- Femora colour otherwise.............................................................................................................................................. 3  
 2. Corium without long outstanding setae; spermatheca with apical sac part globose and slightly broader than subapical part; femora shiny (Solomon Islands)............................................................................................................. femoratus   
 - Corium with sparse long outstanding setae; spermatheca with apical sac part globose and slightly narrower than subapical part; femora not shiny (Micronesia)......................................................................................................... picipes   
3. Body (at least pronotum and corium) covered with long erect to semi-erect bristly setae in addition to golden yellow appressed pubescence.................................................................................................................................................. 4  
- Body (at least pronotum and corium) without long erect to semi-erect setae, but only with golden yellow appressed pubescence.................................................................................................................................................................... 7  
 4. Pronotum with posterior lobe area almost completely pale in contrast to fuscous band on anterior lobe area; most of distal half of scutellum pale in contrast to basal half (Jarvis Island)............................................................ oceanicus   
- Not as above................................................................................................................................................................. 5  
 5. Pronotum with posterior lateral margins and a large discal spot yellow; membrane with conspicuous longitudinal fuscous patch (Micronesia) ............................................................................................................................. pulchellus   
- Pronotum and membrane without the above markings...............................................................................................6  
 6. Second segment of antenna at least 2 times as long as first; hemelytra with costal margin of corium beyond level of apex of scutellum, only slightly expanded before markedly narrowing towards apex (widely distributed in the study area)............................................................................................................................................................. caledoniae   
 - Second segment of antenna less than 2 times as long as first; hemelytra with costal margin of corium beyond level of apex of scutellum, abruptly expanded before markedly narrowing towards apex (coastal New South Wales)........................................................................................................................................................................................ orarius   
 7. Head, pronotum, and scutellum black; legs pale yellow throughout (except for third tarsomere); femora without fuscous spots (Christmas Island)................................................................................................................... spectabilis   
- Head, pronotum, and scutellum not entirely black; legs not pale yellow throughout; femora with fuscous spots..... 8  
 8. Second segment of antenna more than 2 times as long as first (widely distributed in the study area)............... vinitor   
 - Second segment of antenna less than 2 times as long as first (Tasmania)................................................ tasmaniensis
description: Published as part of Malipatil, M. B., 2010, Review and Revision of Nysius Dallas of Australia and South West Pacific (Hemiptera: Heteroptera: Orsillidae), pp. 29-44 in Zootaxa 2410 (1) on pages 43-44, DOI: 10.11646/zootaxa.2410.1.2, http://zenodo.org/record/5307012