Eublaberus posticus (Erichson 1848)

Eublaberus posticus (Erichson)
1848. Blabera postica Erichson, in Schomb. Reisen Brit. Guiana, iii, p. 580.
[British Guiana.] 1894. Blabera thoracica Saussure and Zehntner, Biol. Cent.-Am., Orth., i, p. 120, pi.
V, fig. 25. [ 9 : Panama; Bogota, Colombia.] 1896. B[labera] thoracica Griffini. Boll. Mus. Zool. Anat. comp. Univ. Torino, xi,
no. 236, p. 5. [ 9 ; Punta di Sabana, Darien.]
Panama, i 9 , [U. S. N. M.]
Gatun, Canal Zone, Pan., VII, 25 to TII,22, 1916, (Harrower; one in house),2 9.
The present insect is distinctive in having, in the area of the
lyrate pronotal escutcheon, a large number of small dark dots and
blotches, rather than a few hcaier markings, as found in E. biolleyi
(Rehn), or a heavy suffusion such as occurs in the remaining species
of the genus.
" Occasionally one or both of these spines are missing on one or more of these femora. Not a specimen at hand, however, fails to have at least two of the four femora supplied with these two distal spines, which occur in no other genus of the Blattidae known to us. Il8 THE BLATTIDAE OF PANAMA
Decided -ariation occurs in the width of the interocular space and in size, as is shown by the following measurements (in millimeters) for the few Panamanian specimens at hand.
Interocular Length of Width of Length of Width of + width pronotum pronotum tegmen tegmen
Panama 2.9 12.8 17.7 44.9 16.6
Gatun, Panama 2.6 ii.i 16. i 38.8 15. i
Gatun, Panama 2.3 ii.i 16. i 37.4 14.5

Eublaberus posticus, the orange head cockroach, is a species of cockroach native to Central and South America.