What type of cockroach is commonly highlighted for having a glossy appearance?

The Oriental cockroach is commonly highlighted for its glossy appearance. This species features a dark brown to black coloration with a shiny, almost resinous look that distinguishes it from other cockroaches. Its body is robust and somewhat broad, adding to its characteristic appearance.

In contrast, while the German cockroach does have a somewhat shiny exterior, it is typically lighter in color with a more tan or brownish hue that lacks the deep glossiness associated with Oriental cockroaches. The Brownbanded cockroach, on the other hand, is recognized for its distinctive bands rather than its glossiness, and it also does not possess the same level of shine as the Oriental cockroach. The American cockroach, while large and often glossy as well, does not exhibit the same level of deep, shiny blackness as the Oriental cockroach, which is very distinctive in its visual profile. Thus, the Oriental cockroach stands out distinctly for its glossy finish among these options.