SCUTELLEROIDEA OF IOWA 71 
General form elongate, distinctly produced anteriorly. Color olive green. 
Head and pronotum together forming a long triangle, the pronotum in- 
elining slightly anteriorly. Rostrum extending behind posterior coxae, 
the second and third segments of about equal length, the fourth shorter 
than the third. Antennae long, slender, bearing at base a blunt rounded 
tooth which in turn bears a smaller tooth near its base. Bucculae extend- 
ing almost to base of head, expanded into rounded flaps anteriorly. 
Humeral angles rounded, the postero-lateral margins sinuate. Scutellum 
long, narrow. Corium produced at outer posterior angle. Legs with 
long slender hairs; basal tarsal segment of front legs long and_stout. 
This is a small genus, representatives of which are found in 
the New World only. Six species are recorded from North 
America and one of these has been found in Iowa. 
Rhytidolomia belfragi Stal 
1872. Lioderma (Rhytidolomia) Belfragit Stal, Svensk. Vet. Handl., 10, no. 4, 
235. 
1876. Lioderma beljragii Ubler, Bull. U. S. Geol. Geogr. Surv., II, no. 5, ser. 2, 
287. 
1896. Lioderma belfragiit Osborn, Proc. Ia. Acad. Sci., IV, 231. 
1898. Lioderma belfragii Osborn, Proc. Ia. Acad. Sci., VI, 37. 
1904. Pentatoma Belfragei Van Duzee, Trans. Am. Ent. Soc., XXX, 37. 
1909. Rhytidolomia delfragii Kirkaldy, Cat. Hem. (Heterop.), I, 53. 
1911. Liodermion (Rhytidolomia) belfragii Zimmer, Contrib. Dept. Ent. Univ. 
Neb., no. 4, 7. 
This form differs very markedly from the following species, 
its nearest ally in our fauna, but it somewhat resembles R. faceta 
in its general markings. The following brief diagnosis will 
serve the present need. 
General form broadly oval; distinctly, rather regularly punctate above 
and below. General color light greenish yellow, the hemelytra and venter 
a clearer green; narrow edge of pronotum, hemelytra and a more or less 
distinct median vitta on scutellum yellowish. Head short, the sides only 
moderately sinuate in front of the eyes. Antennae biack, the basal seg- 
ment green. Humeral angles obtusely rounded. Lateral border of apical 
portion of scutellum black. Hemelytra with costal margin beyond middle 
blackish; membrane dark hyaline, the interior basal angle fuscous. Dor- 
sum of abdomen black, the last segment with two bands interrupted at 
middle by an olivaceous spot. Venter with punctures distinct, the median 
line smooth. A slender, curved, longitudinal black line on prostethus. 
Apex of genital segment of male slightly concave, with a rounded median 
tooth, the outer angles obtuse. Tibiae deeply suleate above; tarsi fuscous. 
Length, 13.0-15.0 mm. 
‘This very rare species of pentatomid has been recorded from 
Iowa by Osborn. He says, “‘A single specimen of this species 
has been taken by Mr. Ball at Little Rock, Lyon County.’’ 
