Purex parvicollis ( Stal, 1860 )

Girod, Christophe & Matzke, Danilo, 2020, Annotated checklist of the Dermaptera (Insecta) of French Guiana, Zoosystema 42 (4), pp. 57-76 : 69

Purex parvicollis ( Stal, 1860) *

( Fig. 10B ; 11A )

Forficula parvicollis Stal, 1860: 304 .

TYPE SPECIMEN. — Brazil, male, NHRM [not examined] .

MATERIAL EXAMINED. — 3 specimens ( Fig. 10 B , 11 A )

French Guiana • 2 ♀; Saül, Mont Itoupé ; 800 m a.s.l.; 3°1’19”N, 53°5’3"W; 26.XI.2014; SEAG com.; coll. CGIR; coll. DMAT • 1 ♂; Camopi; Mont Saint-Marcel; 635 m a.s.l.; 2°23’3”N, 53°0’37”W; 26.IX.2014; SEAG com.; coll. CGIR .

DISTRIBUTION. — Brazil, Panama ( Steinmann 1989b), French Guiana (new record).

REMARK

This species looks similar to Purex formosus , differing only by the shape of the forceps. In particular they both have the occiput undepressed, which is quite unusual among Purex species. Given that important variation exist in forceps shape in some species of Purex ( Brindle 1977) , P. formosus and P. parvicollis might represent two forms of the same species. This point needs further studies.

Figures

FIG. 10. — Purex formosus Hebard,1920,male (A); Purex parvicollis (Stal,1860), male (B). Scale bars: 1.0 mm.

FIG. 11. — A, Purex parvicollis (Stal, 1860), female; B, Vostox vicinus (Burr, 1912), male; C, Circolabia arcuata (Scudder, 1876), male. Scale bars: 1.0 mm.