Arrenurus tempelmani, Smit, 2020

Smit, Harry, 2020, New records of the water mite genus Arrenurus Dugès, 1834 from South America (Acari: Hydrachnidia: Arrenuridae), with the description of five new species and one new subspecies, Acarologia 60 (2), pp. 371-389 : 385-386

publication ID	https://doi.org/ 10.24349/acarologia/20204374
DOI	https://doi.org/10.5281/zenodo.4536418
persistent identifier	https://treatment.plazi.org/id/42168F53-FF86-3B0C-FE4A-A9DCFD7571E4
treatment provided by	Felipe
scientific name	Arrenurus tempelmani
status	sp. nov.

Treatment

Arrenurus tempelmani n. sp.

Zoobank: 1805C05C-B97E-4E17-98C3-6C6C15D256C4

( Figure 10 View Figure 10 )

Material examined — Holotype male, pond Hotel Flora y Fauna, 3 km SE of Buena Vista, Bolivia, 17°29.949 S 63°38.152 W, 10-iii-1999, leg. D. Tempelman ( RMNH). GoogleMaps

Diagnosis — Idiosoma anterlaterally with prominent, pointed humps, Dgl-1 on small humps, cauda laterally expanded, P2 with a patch of setae on a lateral extension.

Description — Male: Idiosoma yellowish, dorsally 899 long and 502 wide, ventrally

786 long. Anterior idiosoma with prominent, pointed humps, Dgl-1 on small humps. Dorsal shield incomplete, 348 wide; distance dorsal shield – anterior idiosoma margin 121. Cauda long, distinctly set off from anterior idiosoma, laterally widened, posteriorly with four rounded extensions, the middle pair larger than the lateral pairs. Anterior coxae far distanced from anterior idiosoma margin. Gonopore 25 long, genital field swollen, 308 wide. Length of P1-5: 24, 52, 36, 62, 36. P2 with a large patch of setae on a lateral extension, these are straight (not with a hook-like tip); P2 medially with a long seta. Length of I-leg-4-6: 80, 84, 90. Length of IV-leg-4-6: 162, 130, 112; IV-leg-4 without a spur. Legs with numerous swimming setae.

Etymology — Named after David Tempelman (Amsterdam), collector of the material.

Remark — The new species is similar to A. cornifrons Lundblad, 1938 , but differs in that Arrenurus tempelmani has a more rounded anterior idiosoma, Dgl-1 lie on small humps (not on humps in A. cornifrons ) and a more posteriorly widened cauda. Moreover, the setae associated with the Dgl-3 are located more posteriorly and the genital plates are more swollen compared to A. cornifrons .