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A tentative to a visual key, based on the dorsal view, for the genus Chelinidea for the USA area

Tentatively A visual key, based on the dorsal view, to the species of the genus Chelinidea, adult, for the USA area

This article is based on intensively use of the works (1) and (2) mentioned in the bibliography but not only and is illustrated with pictures posted on BugGuide. I am indebted to all authors.

1. Anterior pronotal angles without any kind of teeth/tubercle/spines, The pronotal collar: clearly delimited ..................................................................................... C.hunteri
- head and pronotum details:
- habitus: (note the distinctive pattern of the juga, and tylus)

2. Anterior pronotal angle armed with a tubercle distinctly notched ( an angular - V-shaped- cut) at the base. The pronotal collar: not clearly delimited ............. C.vittiger
- head/pronotum details:
- habitus:
This is a variable species (obvious chromatically but not only) - more pictures in need to be added
3. Anterior pronotal angle armed with a distinct acute tooth and "juga acutely pointed and distinctly surpassing the apex of tylus at his dorsal level" -quote from (1) ...C.tabulata
- head/pronotum details
- habitus (note the color):

4. Anterior pronotal angle armed with a distinct acute tooth and "juga acutely pointed and just attaining tip of tylus or slightly exceeded by it" -quote from (1) ......... C.canyona
- unfortunately not yet a good picture of details of the head and pronotum on BG (but details are more or less visible on the habitus picture)
- habitus (note the color pattern):

Notes: to be added when the time will permit. An important note will be about C.vittiger for the case when the tubercle apparently missing (!) Another note should be about the use of 'tooth/teeth', 'tubercle' and 'spines' in various works for the description of the species

1. A review of the cactus bugs of the genus Chelinidea with the description of a new species (Hemiptera: Coreidae) - Herring J.L., Proc. Ent. Soc. Wash. 82: 237-251, 1980 (1)
2. Insectos huéspedes de los cactos, Hemiptera-Heteroptera de Mexico XXV, Revision de la familia Coreidae Leach. Parte 2 Tribu Chelinidini Blatcheley - Harry Brailovsky A., Carolina Sánchez A, Cact.Succ.Mex. XXVI: 86-92, 1981 (2)

... more consulted works to be added
Besides the notes and bibliography in need to be added, still, need to make some edit ...
Observations, corrections (even for English) are more than welcome.

Thanks for this.
Very helpful!

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