Ripiphorus nomiae Rivnay 1929

Rhipiphorus nomiae new species
This species may be distinguished from the others of this group in having the first segment of the hind tarsus thick and long as the fourth, but obliquely truncate and emarginate at tip. In addition the female is of a chocolate brown, the pygidium is entirely yellow and, in general, the species is much smaller and more delicate than the others.
Male. Head and thorax black, abdomen brownish-black. Antennae straw yellow, tips brown ; legs yellow, coxa both ends of femora and tibia brownish. Elytra hyaline-yellow with a brownish tinge at base. Vertex prominent, with a carina and a distinct excavation. Pronotum punctate, sides not pubescent, disc sparsely ' so; base slightly truncate, with two depressions in front of it, elytra broad, punctate on sides; seventh tergite roughly punctate opaque, with two round smooth areas on side. Pygidium finer and denser punctate and opaque. Wings with a brownish tinge behind middle near costa. Hind tarsus with first segment slender and slightly longer than fourth, but shorter than all segments combined; it is very little stouter than the others but obliquely truncate and emarginate at tip.
Female differs from the male in color. Head and thorax chocolate brown. Abdomen and the pygidium entirely yellow. Wings more brownish; in one female entirely brown. Legs brown, with tarsi partly yellowish. Antennae 10-segmented ; 8 rami short, subequal in length. Vertex less prominent, but with epicranial suture; pygidium almost uniformly distinctly punctate.
Length, 6 mm.
Holotype. — Male; Selma, Alabama, (Hubbard and Schwarz). [U. S. N. M., No. 41865.]
Allotype. — Female; Selma, Alabama, (Hubbard and Schwarz). Paratypes. — One female with same data as type; [U. S. N. M.]. One female; "Ala," (C. F. Baker).
Regarding the specimens upon which this species is based, we may note a report by Dr. Leconte 12 as follows: "Mr. Schwarz collected at Selma, Alabama, a species of Myodites, Parasitic on Nomia nevadensis Cresson. The abdomen in the female is yellow, and in the male black." This female is the allotype of Rh. nomiae, and has a label of Dr. Schwarz, indicating its parasitism upon Nomia. From this label we learn also, that the name " Myodites nomece" was given to this species, but was not published. I retain, therefore, this name. Upon investigation, Mr. H. S. Barber found that the specimen of Nomia which Dr. Schwarz collected, and upon which the report by Leconte was based, has since become the type of Nomia pattoni Cockerell.