Brachypodopsis, Piersig, 1903

Smit, H., 2016, The water mite family Aturidae Thor, 1900 from Southeast Asia (Acari: Hydrachnidia) with the description of one new genus and 14 new species, Acarologia 56 (3), pp. 341-365 : 344

Brachypodopsis baumi ( Halík, 1930)

( Figure 2 )

Material examined — Thailand. 1/0/0, Lam Takhong Creek , Khao Yai NP, Thailand, 14°27’N 101°21’E, 10-xi-2007 ; 3/3/0, Slow flowing stream, Mam Nao NP, 15°44.422N 101°34.774E, alt. 1190 m a.s.l., 15-xi-2007; 7/1/0, Stream crossing road to Phu Goom Khao, Nam Nao NP, 16°38.410N 101°34.886E, alt. 803 m a.s.l., 16-xi-2007; 0/1/0, Stream downstream of Huoay Meng Waterfall, between Chiang Saen and Chiang Khong , 20°18.095N 100°22.454E, 20-xi-2007 . Malaysia. 1/0/0, Unnamed stream crossing road 59, between Ringlet and Iskandar , 4°21.410N 101°20.156E, alt. 795 m a.s.l., 22-ii-2009 .

Description — Male: Idiosoma yellowish, dorsally 389 long and 320 wide. Dorsal shield 300 wide, posteriorly tapering, anteriorly fused with ventral shield, with six pairs of glandularia. Dorsal furrow lacking glandularia. Postocularia slightly posteromedially of dgl-1; excretory pore fused with dorsal shield. In anterior part of dorsal shield a drop-shaped structure visible. Suture lines of coxae obliterated. A lateral ridge extending anteriorly of fourth leg sockets. Between fourth leg sockets and genital field two pairs of glandularia present, one pair very close to genital field. Genital field terminal, with three pairs of acetabula. Palp not mounted and measured. Length of I-leg-4-6: 44, 50, 54. Length of IV-leg-4-6: 68, 66, 54. Legs not modified. III-leg-5 and IV-leg-5 with three swimming setae, IV-leg-4 with one swimming seta.

Remarks — Brachypodopsis baumi is insufficiently described, and therefore a redescription is given for the male. Halík (1930) didn’t illustrate the pair of glandularia close to the genital field (although these were mentioned by Cook 1967). The male of Lam Takhong Creek is here described. This is a widespread species, known from Malaysia, Burma, Java and Borneo and here reported for the first time from Thailand.

Figures

FIGURE 2: Brachypodopsis baumi (Halík), male: A – dorsum; B – venter. Scale bars = 50 µm.