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Home » Guide » Arthropods (Arthropoda) » Hexapods (Hexapoda) » Two-pronged Bristletails (Diplura) » Dicellurata » Forcepstails (Japygidae) » Evalljapyx
Photo#398662
Parajapyx sp. - Evalljapyx
Copyright © 2010 Jonathan Wright

Parajapyx sp. - Evalljapyx
Malaga Cove, Palos Verdes, Los Angeles County, California, USA
July 17, 2007
Size: 12.5 mm
I've seen these large diplurans a few times in the upper intertidal / spray zone here. They share the habitat with the isopods Armadilloniscus spp. and the gastropod Truncatella californica. The specimen I have (shown here) keys to Parajapyx sp. based on Allen (2002) Trans. Am. Ent. Soc. 128, 403-466.

Images of this individual: tag all
Parajapyx sp. - Evalljapyx Parajapyx sp. - Evalljapyx Cercal forceps of this specimen - Evalljapyx
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Contributed by Jonathan Wright on 21 May, 2010 - 12:30pm
Last updated 10 March, 2014 - 11:22am

Moved
Moved from Forcepstails.
… v belov, 10 March, 2014 - 11:22am login or register to post comments

ID
Hi Jonathan,
Nice images. The ID I believe is incorrect however. To my knowledge no known species in the genus Parajapyx are greater than 5 or 6mm. Based on the photos my guess would be Evalljapyx spp. Members of this genus are common in California (see Smith, L.M. 1960, Kan. Ent. Soc. 33:1 pp1-7; 1959, Proc. Ent. Soc. Wash.61:267-74; 1960, Ann. Ent. Soc. Amer. 53:137-143.)
… Mark Muegge, 27 July, 2010 - 10:27am login or register to post comments

 
ID
Hi Mark,
Thanks so much for this information. I have just the one specimen so will try to collect more for dissection. The specimen has 28 (or possibly 29) antennal segments. I don't know if this matches any known species of Evalljapyx. I've posted an image of the cerci.
… Jonathan Wright, 27 July, 2010 - 6:17pm login or register to post comments

now this is sweet
… v belov, 21 May, 2010 - 6:58pm login or register to post comments

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