Proceedings of the United States National Museum . Figure 3.—Pimplinae:Ephialtini, head sclerites: a, Ephialtes irritaior (Fabricius); b,Iseropus stercorator brunneifrons (Viereck); c, Tromatobia rujopectus (Cresson). (1,antenna; 2, spiracle; 3, skin.) 404 PROCEEDINGS OF THE NATIONAL MUSEUM. FiGURK 4.—Pimplinae:Ephiakini, head sclerltes: Delomerisia diprionis Cushman. (1, antenna; 2, spiracle; 3, skin.) The above key must be regarded as provisional, for, on the presentmaterial, it is very difficult to decide on any one characteristic of agenus. This may be due to the fact that Scamhus, to take
Proceedings of the United States National Museum . Figure 3.—Pimplinae:Ephialtini, head sclerites: a, Ephialtes irritaior (Fabricius); b,Iseropus stercorator brunneifrons (Viereck); c, Tromatobia rujopectus (Cresson). (1,antenna; 2, spiracle; 3, skin.) 404 PROCEEDINGS OF THE NATIONAL MUSEUM. FiGURK 4.—Pimplinae:Ephiakini, head sclerltes: Delomerisia diprionis Cushman. (1, antenna; 2, spiracle; 3, skin.) The above key must be regarded as provisional, for, on the presentmaterial, it is very difficult to decide on any one characteristic of agenus. This may be due to the fact that Scamhus, to take one exam-ple, is a composite genus. Dr. G. S. Walley (in litt.) has reached sucha conclusion on Scamhus from study of the adults. Genus Scamhus.—S. hispae (Harris) has been examined (fig. 2a).S. hrevicornis (Gravenhorst) is figured hj Thorpe (1930), S. detritus(Holmgren) by Salt (1931), S. foliae (Cushman) by Dowden (1941),and S. pomorum. (Ratzeburg) by Imms (1918) and by Speyer (1926).S. pomorum has neither lobes on the ventral surface of the labialsclerite nor an enlargement on the hj-postoma as has aS. hispae. , S. foliae and S. detritus have lobes on the ventral surfaceof the labial sclerite, but an enlargement is not present on the hypo-stoma. The ventral surfa
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Keywords: ., bookauthorun, bookcentury1800, bookdecade1870, booksubjectscience
