Meterginulus Roewer, 1912 nom. rest.

Meterginulus Roewer 1912: 110; Roewer 1923: 385; Roewer 1928: 551; Mello-Leitão 1933: 106; Mello-Leitão 1935b: 113 [junior subjective synonym of Paecilaema C.L. Koch, 1839 by Goodnight & Goodnight (1953b: 54); type species: Poecilaema rastellifera Pickard-Cambridge, 1905, by original designation].

Diagnosis. Very large cosmetids (9 mm of body length) with moderately long and robust legs (I to IV: 16.5/27/21/ 27 mm). DS outline alpha-type with narrow carapace, scutal area I with a pair low blunt tubercles and area III with a pair of acuminate spines. White blots present and suffering various degrees of dissociation: stag or simple chevron, backbone and complex omega stripe. Femur IV strongly ornamented ventrally and dorsally with strong spiniform apophyses in males. Hypertelic chelicerae in males. Tarsal counts: 8/13/9 /10 ( Paecilaema rastellifer from Goodnight & Goodnight 1953).

Included species. Only the type species.

2) Meterginulus rastellifer (Pickard-Cambridge, 1905) comb. rest.

Poecilaema rastellifera Pickard-Cambridge 1905: 571, pl. 53, figs 17–17b [♂ holotype (BMNH GS), from MEXICO, Chiapas, without further locality data].

Meterginulus rastellifer: Roewer 1912: 110; Roewer 1923: 386, figs 473–474.

Meterginulus rastellifera: Goodnight & Goodnight 1951: 144 .

Paecilaema rastellifer: Goodnight & Goodnight 1953: 58, figs 51–52; Kury & Cokendolpher 2000: 154. Paecilaema rastelliferum: Kury 2003: 78 .