NO. 1530. THE DECTICINJE OF NORTH AMERICA— CA UDELL. 381 



IDIOSTATUS HERMANII Thomas. 



Steiroxi/s hermanii Thomas, Rept. IT. S. Geol. Surv. W. 100 Mer., V, 1875, p. 901^, 



pi. xLiv, fig. 4. — Proo. Davenp. Acad. Nat. Sci., I, 1876, p. 263. 

 Idiostatus hermanii Scudder, Can. Ent., XXVI, 1894, pp. 181, 18o; Cat. Orth. 



U. S., 1900, p. 78.— WooDwoRTH, Bull. No. 142, Calif. Exp. Stat., 1902, p. 15.— 



KiRBY, Syn. Cat. Orth., II, 1906, p. 193. 

 Idiostatus californicus Pictet, Mem. Soc. Phyn. Hist. Nat. Genev., XXX (6), 



1888, p. 64, pi. in, figs. 35, 35 a, b. 



.Descrl2)t'urii. — In general characters allied to /. IjiUneatus., but is a 

 much smaller and more slender insect. The head and thorax, also the 

 abdomen and elytra, are essentiall}^ as in cvquaUs. The lateral carinas 

 of the pronotum are moderatel^y distinct, less so anteriorly. The pos- 

 terior femora are less than three times as long- as the pronotum, armed 

 on both margins below, and the anterior til)ia^ are armed above on 

 the outer side onh' with three spines. The elytra of the male extend 

 beyond the posterior margin of the pronotum, a distance less than the 

 thoracic length, the outer apical angle immaculate; of the female 

 extending only a couple of millimeters beyond the pronotum. Geni- 

 talia similar to that of iilmeatus, the cerci of the male, however, a little 

 more concave between the apex and the tooth. 



Color brownish yellow, the base of the last abdominal segment some- 

 times marked at the upper portion of the sides with black, and the lat- 

 eral lobes of the pronotum are usually more or less distinctly margined 

 with lighter color. Otherwise, the color is quite uniform in all cabi- 

 net specimens examined. In life the insects are often grass green, ])ut, 

 as represented bj? a series of over a dozen inunature specimens taken 

 b}^ me on July 21:, 1906, on a species of Oeanofhus, a small holly -like 

 plant forming dense mats on the ground at the base of Mount Shasta, 

 California, the colors are often of various hues, the general color 

 sometimes bright chocolate brownish or sometimes red. The lateral 

 lobes of some of these immature specimens were black, but in most 

 cases they are brownish. 



MeasuremenU. — Length, pronotum, male, 6.5-<S mm., female, 8; 

 posterior femora, male, 17-22, female, 23; elytra, male, 5, female, 2; 

 ovipositor, 26. 



Specimens exam.'med. — A number of specimens from the Mount 

 Shasta district in California. 



The type oiadifornictis is probably in the collection of Brunner von 

 Wattenwyl, but that of hermanii seems to be lost, not having been 

 found in any of the collections studied b}" me. The Scudder collection 

 contains one male specimen from Mount Shasta District, California, 

 labeled /. californicus., by Scudder. Besides the specimens taken by 

 the writer at Mount Shasta. California, in July, 1906, as mentioned 

 above, the National Museum contains an adult pair from the same 

 locality taken in September, 1885, by Behrens, The}' were presented 



