Species/character;"G. albosignatus";"G. goliatus";"G. orientalis" "cranium width";"7.5–8 mm";"10.2–14 mm";"10.8–12 mm" "number of dorsal / ventral sensory spots on antennae";"9–12 / 11–13";"14–25 / 21–32";"11–17 / 17–24" "shape of sensory spots on antennae";"elongate, separated only by a very thin portion of cuticle";"rounded and separated by thick portion of cuticle";"slightly elongated, separated by a relatively thick portion of cuticle" "left chaetoparia of epipharynx";85;107–113;92–104 "third scissorial tooth of right mandible";"equal to the second tooth";"distinctly smaller than the second tooth";"distinctly smaller than the second tooth" "third scissorial tooth of left mandible";"equal to the second tooth";"equal to the second tooth";"distinctly smaller than the second tooth" "calyx of right mandible";"ventral lobe about half of the size of the dorsal lobe";"ventral lobe about one third of the size of the dorsal lobe";"ventral lobe about half of the size of the dorsal lobe" "left brustia of calyx";14–23;45–50;35–37 "relative length of tarsungulus (claw)";"about one half of the length of tibiotarsus";"subequal to tibiotarsus";"subequal to tibiotarsus"