Recifella insolitiseta, Smit & Pešić, 2025

Smit, Harry & Pešić, Vladimir, 2025, New records of the genus Recifella K. Viets, 1935 from Australia, with the description of four new species (Acari: Hydrachnidia, Unionicolidae), Zootaxa 5679 (3), pp. 365-387 : 372

publication ID

https://doi.org/10.11646/zootaxa.5679.3.3

publication LSID

lsid:zoobank.org:pub:E2D6545C-DBA6-47C5-B299-E577A6906994

DOI

https://doi.org/10.5281/zenodo.17041388

persistent identifier

https://treatment.plazi.org/id/2C2787CE-FF88-FF2D-C98A-FC1439C0C7D6

treatment provided by

Plazi

scientific name

Recifella insolitiseta
status

sp. nov.

Recifella insolitiseta sp. nov.

Figs 6–7 View FIGURE 6 View FIGURE 7

Material examined. Holotype, male, Queensland, Takilberan Creek, N of Gin Gin at crossing with Bruce Highway , 24°49.680 S 151°42.479 E, 85 m asl, 18-xi-2014, dissected and slide mounted ( QM) GoogleMaps .

Diagnosis. III-leg-2 with a long, heavy ventral seta, located in the centre of the segment, distally expanded and bluntly pointed; three specialized setae of IV-leg-5 somewhat widened distally, placed close together on a noticeable ventral bulge.

Description. Male. Dorsal and ventral shield present; dorsal shield 540 long and 425 wide, with four pairs of glandularia ( Figure 6B View FIGURE 6 ), fused posteriorly with ventral shield. Postocularia fused with the ventral shield; no glandularia lying in the dorsal furrow. Ventral shield approximately (partly squeezed) 556 long, tips of first coxal plates rounded. Apodemes of anterior coxal plates extending beyond the middle of third coxal plates. Genital plates fused with the ventral shield with approximately 19-23 pairs of acetabula, 277 wide between outer margins of acetabula; gonopore 66 long. Ejaculatory complex 113 long.

Palp as illustrated in Figure 6C View FIGURE 6 : dorsal length/height: P1, 28/36; P2, 110/63; P3, 58/45; P4, 107/33; P5, 31/20; dorsal heavy seta at the tip of P5 widely diverging of the more ventral two. Gnathosoma with anchoral process 136 long. Chelicera ( Figure 6D View FIGURE 6 ) 131 long, claw 45 long, basal segment 86 long.

Dorsal lengths of I-leg: 55, 114, 120, 159, 200, 190; dorsal lengths of III-leg: 77, 111, 103, 161, 178, 163; III-leg-2 with a long, heavy seta, located in the centre of ventral margin, distally expanded and bluntly pointed as illustrated in Figures 7 View FIGURE 7 A-B; III-leg-5 with a long, heavy distoventral seta with large pectinations, ventral heavy setae longer ( Figures 7 View FIGURE 7 A-B); dorsal lengths of IV-leg: 92, 119, 118, 167, 263, 219; IV-leg-5 bowed; the three specialized setae of IV-leg-5 placed close together and located on a noticeable ventral bulge ( Figure 6F View FIGURE 6 , inset), these setae somewhat widened distally and with small pectinations. III-leg-3 with one, III-leg-4 and 5 each with three swimming setae; IV-leg-3 with one distoventral, IV -leg-4 and 5 each with three distoventral swimming setae.

Etymology. Named for the unusual seta of III-leg-2.

Remarks. With Smit (2007) the examined specimens key out as Recifella triradiata , a species known from Queensland ( Cook 1986). From the new species, R. triradiata , differs in the ventral seta on III-leg-2 normal in shape, similar to two other setae, not expanded distally (compare figure 7C with figures 7A-B).

QM

Queensland Museum

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Trombidiformes

Family

Unionicolidae

Genus

Recifella

SubGenus

Recifellida

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