
WOMERSLEY—MIGROTROMBIDIINAE OF AUSTRALIA AND NeW GUINEA 305 
SPATIUDATHROMBIUM BoUTTCorrr (Wom., 1984), 
Microtrombidinn sauthealti Wom,, 1994, Ree. &, Aust. Mus. & (2), 197, 
Lehinothrombium southeatti (Wom, 1987), Ree. 8. Aust. Mus, 6 (1), 90, 
Fig, 6 A-D, 
KRedeseription. Adult, Shape somewhat elliptical, broadest across shoulders. 
Colour red. Length to 1-5 wm,, width to 0°825 mm. Legs all shorter than body, 
1 900u,. 17 675p, THT 750p, LV 900.4; tarsus 1 218e long by LOK» high, metatarsus 
T1354 long. Crista linear, elongate, 3384, with subposterioy sensillary area at 
abont 4 from apex, sensillae ea. 100p long, and apparently nude, their bases 20p 
apart. Mandibles with finely serrate tiner edge to chelae. Palpi ag in the genus, 
tibia without external spine, tarsus elongate but not reaching tip of claw. Eyes 
2-42, ocular shields ill-defined, and slightly in advance of sensillary area. Dorsal 
setae of two kinds and lengths as in the genus; the shorter setae spathulate, to 26 
long by 8p wide, slightly indented at apex and furnished with long eiliations which 
are slightly longer apically ; longer setae spine-like, 75. long by 6-5 wide, tapering 
apically and with longitudinal rows of indistinet serrations. 
Loc. <A single specimen (type) from Belair, South Australia, Jan. 1943. 
(R.V,8.), 
SPATHULATHROMBIUM, MAXIMUM sp. nov. 
Wig 6 HE. 
Description. Adult. Shape asin genotype. Colour red. Length to 3-0 min. 
width to 2°] mm, across the moderately pronounced shoulders, Legs not or only 
slightly longer than body, T 2100y, IT 1445,, ILL 1500p, 1V 2500,, tarsus | 405— 
4804 long by 150-180p high, metatarsus T 300-360, long. Crista elongate and 
fairly thick, 470m long, with subposterior sensillary area at about 34 from apex, 
with paired apparently nude sensillae, ca. 200n long and their bases 50u apart. 
Eyes 2+-2 well in advance of sensillary area. Chelicerae with finely serrate inner 
edge. Palpi as figured the distal portion of tibia very slender (ef. fig. 6 G), tarsus 
elongate, barely reaching tip of tibial claw. Dorsal setae as in fig. 6 H, of two 
kinds and sizes, the smaller ones spathulate with lone ciliations, to 36 long by 
1d wide, and slightly incised apically ; longer setae spine-like, 70 to 165 long by 
6+5p wide, with a strony apical point, and longitudinal rows of indistinet minute 
serrations. 
Loe. Type a single specimen from Greenborough, Vic., 22 Aug., 1934 (A. 
Tubb) ; another from Mt. Wellington, Tas., Sept. 1935 (J, W, Evans). 
Remarks. Very much larger than southcotti in which it agrees in the form 
but not size of the smaller setae. Tt differs, however, in the dimensions of the front, 
tarai and metatarsi. 
SPATHULATHROMBIUM QUEENSLANDTAB sp, Nov, 
Fig. 7 A-D. 
Deseription. Adult. Colour red. Shape as in preceding species. Length 
1-6 mm., width 1-2 mm., with only moderately prominent shoulders. Legs rela- 
tively short, 1715p, 11 475, L1f 5292, TV 765y; tarsus T 175p long by 108p wide, 
metatarsus I 119,” long. Crista elongate and moderately thiek, 2600 lone with 
subposterior sensillary areca, posterior arm evanescent, sensillae ca. 150p long, nude, 
with bases. 21 apart. Hyes 2--2, apparently not on oenlar shields, and only 
slightly in advance of sensillary area. Palpi as fienred, distal portion of tibia 
fairly slender, tarsus elongate only reaching to base of elu. Dorsal setae of two 
