Holotype: "Male holotype from Lugert, Oklahoma, June 11, 1937 (Standish-Kaiser), in the collection of the University of Utah" (Muma, 1951, p. 115).

Chelicerae Description: "Dentition as shown in figure 240. Similar to that of H. branchi, new species, except that the intermediate teeth of movable finger are unequal in size, the basal modified tooth of the fixed finger exists only as an indefinite ridge, and the fondal teeth are graded in size I, III, II, IV, with the third mesal tooth considerably larger than the others. The paratype has the ectal row of fondal teeth reduced to indistinct granules" (Muma, 1951, p. 114).

Chelicerae Setae Description: "Flagellum complex typical of group. Striate bristles broadened basally except for the apical bristel which is weakly clavate and hooked at the tip. Plumose setae lightly curved and weakly plumose except for the five most apical which are flattened, arched over the dorsal margin of the fixed finger, and are strongly plumose. Mesal setae of movable finger plumose except for a few near the apical end fo the finger which are simple" (Muma, 1951, p. 114).

Ctenidia Description: "First post-spiracular abdominal sternite provided with two robust, flatenned ctenidia which extend beyond the margin of the suceeding sternite as in Hemerotrecha branchi, new species" (Muma, 1951, p. 115).

Diagnosis: "The fondal teeth of this species are not graded in size as are the other species within this group of the genus. The species may prove to belong in another group or in a seperate genus" (Muma, 1951, p. 115).

Hemerotrecha macra  – male holotype AMNH

Lugert, Oklahoma, June 11, 1937; coll., Standish-Kaiser

99.34

(All measurements in sp description except papillae segments)

Measurements:

Notes:

One fondal tooth. Photo.

Two long thin ctenidia – sticking straight up but extend about 2/3 way down subsequent sclerite. Photo from lateral aspect.

Pedipalp dark on tarsus, metatarsus, and distal part of tibia; 22 papillae covering almost entire prolateral surface. Photo of palp.