Primary type information:
Primary type material: holotype (?) worker. Primary type locality: Egypt (“Arabia”): Sinai, Wadi Ferran (
J.K. Lord). Primary type depository: unknown (no type-material known to exist).
Type notes:
1) No indication of number of specimens is given. 2) 
Horn & Kahle, 1936: 294, cite several depositories for Walker material including 
BMNH, 
MVMA, 
OXUM; and some material destroyed. 3) 
Agosti, 1990b: 1484, reports no material present in 
BMNH.