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Zygoballus iridescens holotype dorsal view

Holotype of Zygoballus iridescens jumping spider (female).

Superregnum: Eukaryota
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Cladus: Protostomia
Cladus: Ecdysozoa
Cladus: Panarthropoda
Phylum: Arthropoda
Subphylum: Chelicerata
Classis: Arachnida
Ordo: Araneae
Subordo: Opisthothelae
Infraordo: Araneomorphae
Taxon: Neocribellatae
Series: Entelegynae
Sectio: Dionycha
Superfamilia: Salticoidea

Familia: Salticidae
Genus: Zygoballus
Species: Zygoballus iridescens

Zygoballus iridescens is a species of jumping spider which occurs in the United States.[2] It is known only from a single female specimen collected in Franconia, New Hampshire by Annie Trumbull Slosson.[2][3]

Slosson's specimen was the basis for entomologist Nathan Banks' description of the species, which was published in Canadian Entomologist in 1895:[2]

Zygoballus iridescens, nov. sp.
Length, 4.1 mm.; ceph.,1.8 mm. long, 1.4 mm. wide. Eye-region black, thoracic part reddish, both with whitish hairs and scales. Anterior femora black, black stripe above and on inner side of patella and tibia I., rest of legs pale yellowish, without any spots. Mandibles and mouth parts red-brown; sternum black. Abdomen black, clothed above and on sides with iridescent scales and long hairs; venter black, hairy, and with two indistinct rows of pale spots. Structure in general similar to Z. bettini, but the mandibles are not quite so large; and the sternum is much broader, not narrowed in front, so that the anterior coxae, which are not as long as in Z. bettini, are more widely separated. The region of the epigynum is red-brown, and is semicircular in outline; showing four pale spots, two in front close together, and one in each posterior corner. Franconia, N. H. (Mrs. Annie T. Slosson).

Arachnologists George and Elizabeth Peckham commented on the specimen in their 1909 work Revision of the Attidae of North America: "Iridescens B., which Mr. Banks has kindly lent us for examination, is founded upon an example which is not quite mature, and we think it may be Bettini."[4] (Zygoballus bettini is now a synonym of Zygoballus rufipes.)

The type specimen is housed at the Museum of Comparative Zoology, Harvard University.[5]
References

"Taxon details Zygoballus iridescens Banks, 1895". World Spider Catalog. Natural History Museum Bern. Retrieved 2016-07-23.
Banks, Nathan (1895). "Some new Attidae". Canadian Entomologist. 27 (4): 96–102. doi:10.4039/Ent2796-4.
Slosson, Annie Trumbull (December 1898). "List of Araneae Taken in Franconia, New Hampshire". Journal of the New York Entomological Society. 6 (4): 247–249.
Peckham, George; Peckham, Elizabeth (1909). "Revision of the Attidae of North America" (PDF). Transactions of the Wisconsin Academy of Sciences, Arts, and Letters. 16: 578.
Proszynski, Jerzy (2006). "Zygoballus Peckham et Peckham, 1885". Catalogue of Salticidae (Araneae). Museum and Institute of Zoology, Polish Academy of Sciences. Retrieved 2009-11-24.

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