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040 _aEC-PaCDF
_bspa
_cEC-PaCDF
041 _aeng
082 0 4 _a595.42
_223
100 1 _aHoogstraal, Harry.
_95521
_eautor
245 1 0 _aArgas (Microargas) transversus Banks (New Subgenus) (Ixodoidea, Argasidae), a diminutive parasite of the Galápagos giant tortoise :
_bRedescription of the holotype male and description of the larva /
_cHarry Hoogstraal and Glen M. Kohls.
260 3 _c1966.
300 _a: 247-252 p.
520 0 _aThe single specimen described as Argas transversa, from Albemarle Island in the Galapagos Archipelago, by Ranks in 1902 without reference to host, developmental stage, or sex, proves to be a male measuring only 1.50 mm long. This minute specimen represents one of the smallest tick species known and its transversely oval body bears an exceptional number and variety of lateral and ventral setae, all features that suggest remarkable convergent adaptation of this metastigmatic tick and prostigmatic lizard-parasitizing mites, especially those of the family Pterygosomidae. In addition to a redescription of the long-overlooked holotype male of A. transversus, a larva of this species, from the Round-domed Giant Tortoise, Testudo elephantopus porteri Rothschild, on Indefatigable Island, Galapagos, is here described. The larval stage in many structural respects resembles the adult stage and bears similar though fewer specialized setae. Every criterion of a tick of the genus Argas is satisfied in both developmental stages but owing to the number of unique or unusual features of both the adult and the larva, a new subgenus, Microargas, is proposed to contain A. transversus Banks.
546 _aInglés
550 _a31
653 _aArgas
653 _aMicroargas
653 _aNew Subgenus
653 _aIxodoidea
653 _aArgasidae
653 _aGalápagos
653 _aGiant tortoise
653 _aTortugas gigantes
700 1 _95520
_aKohls, Glen M.
_eautor
773 0 _tAnnals Entomological Society America
_gVol. 59, No. 2 (March 1966), p. 274-252.
856 4 0 _uhttps://doi.org/10.1093/aesa/59.2.247
942 _2ddc
_cARTICLE
999 _c2042
_d2042