Limnesia (Limnesia) babinda Cook, 1986

Smit, Harry, 2022, New records of water mites of the family Limnesiidae Thor from Australia (Acari: Hydrachnidia), with the description of seven new species, Acarologia 62 (1), pp. 193-222 : 194

Limnesia (Limnesia) babinda Cook, 1986

( Figure 1 )

New records — Queensland. 2/3/0, Mulgrave River, interstitial dig, Wooroonooran NP, 17°14.430′ S 145°46.456′ E, 69 m a.s.l., 1 Nov. 2014 ; 0/1/0, stream downstream of Kearney

Falls, Goldsborough Valley, Wooroonooran NP, 17°14.286′ S 145°46.907′ E, 139 m a.s.l., 1

Nov. 2014.

Description —- Male: Idiosoma dorsally 583-608 long and 374 wide, ventrally 612-640 long. Anterior dorsal platelets 158 long and 60-64 wide, posterior dorsal plate 292-300 long and 235-251 long.

Female: Idiosoma dorsally 624 (640-664) long and 413 (405-437) wide, ventrally 656 (688-713) long. Dorsum with one large posteromedial plate without glandularia, 292 (312-324) long and 267 (259-275) wide, and a pair of elongated platelets with the postocularia, 156 (166-174) long and 56 (62-66) wide. Venter in most aspects as in male, except genital field ( Figure 1 ). Posterior to Cx-IV a small area of secondary sclerotization. However, in another female, this area of secondary sclerotization is larger, extending to the level of posterior margin of genital field. Genital field 146 long and 152 wide, with three pairs of glandularia. Posterior to genital field an area of secondary sclerotization. Length of P1-5: 24, 89, 66, 122, 34. Palp as in male. Length of I-leg-4-6: 110, 128, 120. Length of IV-leg-4-6: 134, 154, 134; subterminal seta of IV-leg-6 46 long. Legs without swimming setae.

Remarks — Thus far, this species was known only from the holotype male. Therefore, some measurements are given for the male and a description of the female.

Distribution — Queensland.

Figures

Figure 1 Limnesia (Limnesia) babinda Cook, venter female. Scale bar = 100 µm.