Muma, 1951: 88, fig. 153;
Muma, 1962: 9.
(Muma): Muma, 1970a: 32; Muma, 1976: 19; Brookhart and Brookhart, 2006:
Coconino County - southern rim of Grand Canyon, 29 June 1947 (Borys Malkin), 1
Deposited in the American Museum of Natural History.
Muma, 1951: 88, fig. 153 (as Therobates malkini):
Total length, 23.0 mm.
Chelicerae 6.8 mm
4th legs 24.0
Coloration in alcohol light to rusty yellow, with dusky markings as
follows: propeltidium dusky except for a light median ovate area and two
posterior submarginal ovate areas; eye tubercle dark; mesopeltidium,
metapeltidium, and abdominal tergites dusky, with abdominal tergites
lighter in the middle; palpi dusky on distal ends of femora and all of
tibiae, metatarsi, and tarsi; legs dusky on distal ends of femora, all
of tibiae, and proximal ends of metatarsi. Malleoli white.
Dentition and structure similar to those of branchi, new species, except
that there are six trace ctenidia on the first post-spiracular abdominal
sternite, and opercula of the genital segment differ as shown in figure