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102 LOWA STULTES IN VATU RADTES fer uw 
Thyanta custator (Fabricius) 
1803. Cimex custator Fabricius, Syst. Rhyng., 164. 
1851. Pentatoma custator Dallas, List Hem., I, 251. 
1862. Thyanta custator Stal, Svensk. Vet. Handl., 3, no. 6, 58. 
1872. Vhyanta custator Stal, Svensk. Vet. Handl., 10, no. 4, 34. 
1872. Thyanta custator Uhler, Rept. U. S. Geol. Surv., V, 399. 
1876. Thyanta custator Uhler, Bull. U. S. Geol. Geogr. Surv., II, 289. 
1904. Thyanta custator Van Duzee, Trans. Am. Ent. Soc., XXX, 53. 
1906. Thyanta custator Barber, Brooklyn Inst. Sci. Bull., I, 260. 
Elongate ovate. General color pale green, closely, regularly punctured 
and more or less hairy. Head closely, uniformly punctate, flattened above, 
slightly sinuate in front of the eyes, the tylus a little raised and slightly 
longer than juga. Antennae long, hairy, the two basal segments and 
basal half of third segment pale green; two apical segments and apical 
half of third segment deep reddish to fuscous; second segment longer than 
third. Rostrum extending to posterior margin of first visible ventral seg- 
ment, the three basal segments greenish with black median line, the apical 
segment black; bucculae greenish, decreasing in height posteriorly and not 
quite enclosing basal rostral segment. Pronotum uniformly punctate, the 
lateral margins pale, slightly concavely arcuated, the edges a little rough- 
ened and setose; humeri usually obtuse, sometimes with a purplish red 
band extending across the pronotum between them; anteriorly, on either 
side of the median line is a smooth, yellowish, depressed lunate space 
sometimes enclosing a raised punctate area. Scutellum elongate, rather 
regularly punctate, the punctures arranged in more or less definite semi- 
transverse rows leaving fine rugae between; the punctures larger, deeper 
and denser along the margins; narrow apical portion attenuate, the ex- 
treme apex usually marked with pale or reddish. Hemelytra narrower 
than abdomen, regularly punctate and with a few small, smooth raised 
areas; costal margin at base pale or reddish; apical margin straight, the 
outer apical angle acute; membrane pale, longer than abdomen, a few 
black dots at base. Tergum pale green, the margin pale yellow to reddish, 
finely, confluently punctate and with, sometimes, a few black punctures 
anterior and posterior to the incisures. Venter pale yellow to greenish 
yellow, finely, rather regularly punctate, the space between the punctures 
finely, transversely aciculate; spiracles black. Side pieces of thorax coarse- 
ly, irregularly punctate. Ostiolar opening continuing laterally in a long 
groove which gradually becomes evanescent. Legs green, thickly furnished 
with short hairs, the apex of tibiae and the two apical tarsal segments 
infuseate; front tibiae with a small spine on inner side at about the mid- 
dle; all the tibiae broadly, shallowly suleate. Genital segment of male 
broad, the lateral lobes somewhat flattened and divergent, broad apically, 
the sinus between them broad and scarcely notched in the middle. Length, 
9.5-12.0 mm. Width across pronotum, 5.0-6.5 mm. ; 
This is a very variable and no doubt plastic species which is 
widely distributed in North America. Some of the more char- 
