Common name: German cockroach
The German cockroach is by far the most important and usually the most common of the cockroaches. In addition to being a nuisance, it has been implicated in outbreaks of illness, the transmission of a variety of pathogenic organisms including at least one parasitic protozoan, and allergic reactions in many people. This species has worldwide distribution.
Adults about 1/2 - 5/8" (13-16 mm) long. Color light brown to tan except for 2 dark, almost parallel longitudinal stripes / bar / streaks on the back of head.
The female carries her egg sack until it is within 1-2 days of hatching, and then deposits it in a sheltered area / site. On the average, the female will produce about 5 egg sacks (range 4-8), averaging 30-40 eggs (range 18-50) each.
Developmental time (egg to adult) usually varies from 54-215 days, averaging about 103 days.
Common name: Smokybrown cockroach
The smokybrown cockroach gets its name from its uniformly shining brownish black to dark mahogany color. This species is apparently native outside the United States. It is common in the southern states, from central Texas eastward through North Carolina, but does occur as far north as Illinois, Indiana, and Iowa. It also occurs in southern California.
Adults about 1-1 1/4" (25-32 mm) long. Color uniform and shining, typically brownish black but varies from dark mahogany to black.