Nyoka-mchanga

**Nyoka-mchanga** ni spishi za nyoka wa jenasi *Psammophis* katika familia Lamprophiidae. Nyoka-mchanga mdogo huitwa **kidurango** pia.

Nyoka hawa ni wafupi hadi warefu kiasi. Spishi nyingi ni sm 50-100 lakini nyoka-mchanga maridadi ni sm 45 kwa kipeo na nyoka-mchanga madoadoa anaweza kufika m 1.9. Kimsingi rangi yao ni kahawia lakini kwa kawaida wana milia myeusi, kijivu, njano na/au myekundu.

Nyoka-mchanga hula mijusi ambao wanawakamata ardhini au katika vichaka.

Chonge zao ni meno ya nyuma kabisa na ni ndefu kuliko zile za nyoka wengine wenye chonge za nyuma. Spishi kubwa zinaweza kuingiza kiasi cha sumu kinachotosha kwa kumletea mtu shida: kufura, kuvuja damu, unyeo mbaya na kichefuchefu. 

## Spishi za Afrika
* *Psammophis aegyptius* Nyoka-mchanga Kaskazi (North African sand snake)
* *Psammophis angolensis* Kidurango au Nyoka-mchanga Mdogo (Dwarf sand snake)
* *Psammophis ansorgii* Nyoka-mchanga wa Angola (Link-marked sand racer)
* *Psammophis biseriatus* Nyoka-mchanga Milia-miwili (Two-striped sand racer)
* *Psammophis brevirostris* Nyoka-mchanga Pua-fupi (Short-snouted grass snake)
* *Psammophis crucifer* Nyoka-mchanga Milima (Montane grass snake)
* *Psammophis elegans* Nyoka-mchanga Mrembo (Elegant sand racer)
* *Psammophis jallae* Nyoka-mchanga wa Jalla (Jalla's sand snake)
* *Psammophis leightoni* Nyoka-mchanga wa Kepi (Cape sand snake)
* *Psammophis leopardinus* Nyoka-mchanga Chui (Leopard sand snake)
* *Psammophis lineatus* Nyoka-kititi Milia (Striped swamp snake)
* *Psammophis mossambicus* Nyoka-mchanga Zeituni (Olive sand snake)
* *Psammophis namibensis* Nyoka-mchanga wa Namibia (Namib sand snake)
* *Psammophis notostictus* Nyoka-mchanga wa Karuu (Karoo sand snake)
* *Psammophis occidentalis* Nyoka-mchanga Magharibi (Western sand snake)
* *Psammophis orientalis* Nyoka-mchanga Tumbo-milia (Eastern stripe-bellied sand snake)
* *Psammophis phillipsii* Nyoka-mchanga wa Phillips (Phillips's sand snake)
* *Psammophis praeornatus* Nyoka-mchanga Pambo (Ornate Olympic snake)
* *Psammophis pulcher* Nyoka-mchanga Maridadi (Beautiful sand snake)
* *Psammophis punctulatus* Nyoka-mchanga Madoadoa (Speckled sand snake)
* *Psammophis rukwae* Nyoka-mchanga wa Rukwa (Rukwa sand snake)
* *Psammophis schokari* Nyoka-mchanga wa Schokari (Schokari sand racer)
* *Psammophis sibilans* Nyoka-mchanga Milia (Striped sand snake)
* *Psammophis subtaeniatus* Nyoka-mchanga Tumbo-njano (Stripe-bellied sand snake)
* *Psammophis sudanensis* Nyoka-mchanga wa Sudani (Northern stripe-bellied sand snake)
* *Psammophis tanganicus* Nyoka-mchanga wa Tanganyika (Tanganyika sand snake)
* *Psammophis trigrammus* Nyoka-mchanga Magharibi-kusini (Western sand snake)
* *Psammophis trinasalis* Nyoka-mchanga Baka-uma (Fork-marked sand snake)
* *Psammophis zambiensis* Nyoka-mchanga wa Zambia (Zambian whip snake)

## Spishi za Asia
* *Psammophis condanarus* (Sand snake)
* *Psammophis indochinensis* (Indochinese sand snake)
* *Psammophis leithii* (Pakistan sand racer)
* *Psammophis lineolatus* (Steppe ribbon racer)
* *Psammophis longifrons* (Long sand racer)

## Picha

ארבע קו מצרי.jpg|Nyoka-mchanga kaskazi
Psammophis biseriatus - Mzima Springs - 6789.jpg|Nyoka-mchanga milia-miwili
Psammophis brevirostris 1.jpg|Nyoka-mchanga pua-fupi
Psammophis crucifer04.jpg|Nyoka-mchanga milima
Fork-marked Sand Snake (Psammophis leightoni trinasalis) (7027190353).jpg|Nyoka-mchanga baka-panda
Dortmund - Zoo - Psammophis mossambicus 01 ies.jpg|Nyoka-mchanga zeituni
Psammophis namibensis00.jpg|Nyoka-mchanga wa Namibia
Eastern Stripe-bellied Sand Snake (Psammophis orientalis) (13937650028).jpg|Nyoka-mchanga tumbo-milia
Speckled Sand Racer (Psammophis punctulatus) (14124128085).jpg|Nyoka-mchange madoadoa
Psammophis schokari01.jpg|Nyoka-mchanga wa Schokari
Psammophis1.JPG|Nyoka-mchanga milia
Psammophis subtaeniatus1.jpg|Nyoka-mchanga tumbo-njano

Psammophis lineolatus catch young Trapelus sanguinolentus; Baikonur.jpg|Steppe ribbon racer
Stout Sand snake Psammophis longifrons by Krishna Khan Amravati.jpg|Long sand racer

## Marejeo
* Spawls, S., Howell, K., Drewes, R. & Ashe, J. (2002) *A field guide to the Reptiles of East Africa.* Academic Press, San Diego, CA, USA.

## Viungo vya nje
* Hazinadata ya watambaachi

Jamii:Nyoka