The outer ring of spiracular
atrium is covered with sharp pointed spinules.
Its is distinct, however with its closest relative (dromedarii) in having without lateral projections of basis capituli, dorsal posterior margin angular and deeply concave, conscutum with deep and long cervical grooves but very short marginal grooves, postero-median groove does not reach the parma, and remain separated, paramedian festoons parma generally rectangular and broad, large punctuations on caudal and lateral fields but sparse, however small punctuations always dense, transverse ridges present in caudal area, broad, angle of paraparmal festoons eject, sub-anal plates smaller in size and a very short dorsal prolongation of the spiracular
plates and not clear from the body of the plate.
Evaporatoria greyish brown, other parts of ventral surface thorax and abdomen dark brown, prespiracular portions of spiracular
callosities of abdominal sternites III-VII yellowish (Fig.
19); 2 pairs of trichobothria on abdominal segments 3-7, one aligned to the spiracle and other mesad of spiracular
26), each papilla with a slit-like spiracular
Hissing via spiracular
air expulsion is known to serve a defensive function in the blattid genus Gromphadorhina (Nelson 1979, Nelson & Fraser 1980) and at least one organism outside of snakes, the burrowing owl, incorporates mimicry of snake rattling in its defensive repertoire (Rowe et al.
Posterior spiracles asymmetrical, with 3 lobes, 2 with spiracular
openings that radiate from the ecdysial scar (Fig.
Abdomen -- Segments 1-5 sclerotized dorsally, membranous laterally and ventrally, spiracles on or near lateral margins of tergites; segment 6 sclerotized dorsally, laterally, and ventrolaterally with only a narrow ventromedial area membranous or weakly sclerotized, spiracles well removed (at least 10 x spiracular
diameter) from obscure ventrolateral margins; segments; 7 and 8 completely sclerotized, 7 with lateral spiracles; tergites of segments 4 and 5 with two longer darker sensilla on posterior margin, segments 6 and 7 with long, dark, posterodorsal and posteroventral sensilla originating in sclerotized areas, segment 8 relatively short (x = 1.
18, Moritz 1997), and the spiracular
peritremes have a varied and complex structure (Moritz 1985).
They may be separated from Neoporus and Heterosternuta by the presence of spiracular
openings on mesopleural regions and on tergites of abdominal segments 1 to 7 (8, 9).
areas with 17 long, slender setae and 22 short, spine-like setae.
Membranous, very pale and with pale spiracular
and inconspicuous intersegmental sclerites.