(Figs. 57-59)

Ityphilus guianensis Chamberlin, 1921:23-25; Attems, 1929:106; Chamberlin, 1943:16; Chamberlin, 1945:171; Chamberlin, 1957:25; Pereira & Minelli, 1996:110; Foddai et al., 2000:154; Foddai et al., 2002:473; Foddai et al., 2004:276; Bonato et al., 2007:3.

Ityphilus cf. guianensis : Adis et al., 1996:168

Remarks: This species was insufficiently described by Chamberlin (1921). The original description lacks information on important characters of specific value and only includes three inadequately detailed figures. Nevertheless, several approximate ratios (herein included in Table 1, as indicative features for this species), related to antennal articles; cephalic plate; forcipular segment; ultimate legs; tergite and sternite of the ultimate leg-bearing segment, are tentatively deduced from the original figures.

In the original description Chamberlin states “Pairs of legs, forty-nine in one specimen and fiftyfive in two”, but does not specify to which sex these numbers correspond. Describing the ultimate legs, he says “Anal legs, in the male at least, strongly thickened, subconically narrowing from base to distal end”. Because this trait is consistent with his “fig. 24” (here reproduced as Fig. 59), it is possible that the specimen drawn is a male (but the schematic aspect of the postpedal segments, does not permit confirmation of its sex).

Type locality: British Guiana: Dunoon.

Distribution: Guyana: Dunoon. Trinidad. Brazil: Amazonas.