ENTOMOLOGICAL NEWS 



PROCEEDINGS OF THE ENTOMOLOGICAL SECTION 



ACADEMY OF NATURAL SCIENCES, PHILADELPHIA. 



Vol. XXII. 



NOVEMBER, 191 1, 



No. 8. 



CONTENTS 



Marlatt — A Newlv-imported Scale-Pest 

 on Japanese Hemlock (Rhynch.) .. 3S5 



Sherman and Brimley — Orthoptera of 

 North Carolina 387 



Needham — Notes on some Nymphs of 

 Gomphinae (Order Odonata) of 

 the Hagen Collection 392 



Wolley Dod — Notes on Nephelodes 

 Guen. (Lepid.) 397 



Calvert — Studies on Costa Rican Odo- 

 nata. II — The habits of the Plant- 



dwelling Laria of Mecistogaster 



modestus 402 



Skinner — New Species or Sub-species 



of N. American Butterflies (Lepid.) 412 

 Skinner — Adelpha (Heterochroa) bre- 



dowi and californica (Lepid.) 414 



Bergroth — On two species of the Bery- 



tid genus Capyella Bredd. (Rhyn.) 416 



Editorial 417 



Notes and News 418 



Entomological Literature 423 



A Newly-Imported Scale-Pest on Japanese Hem- 

 lock (Rhynch.). 



By C. L. ]\Iarlatt, Bureau of Entomolog}', U. S. Dept. of Ag- 

 riculture, Washington, D. C. 



(Plate XIII.) 



Aspidiotus (Diaspidiotus) tsugae n. sp. 



Scale of female. — Diameter, i 1-3 mm.; circular, strongly convex, 

 dark brown, rather pointed or nippled at center ; central area usually 

 covered by secretion, when rubbed a light resinous yellow. 



Scale of male. — The normal oval shape, much smaller than female, 

 secretion covering center or nipple, somewhat ashen, forming a light 

 central spot. 



Adult female. — Oval ; .85 mm. long, .68 mm. broad, in general hya- 

 line as mounted in balsam ; anal plate broad, rounded, .34 mm. broad 

 at extreme base, and .18 mm. long, nearly hyaline except the para- 

 physes ; two pairs of short and rounded lobes, latter condition probably 

 due to wear (newly molted adult individuals will probably exhibit the 

 usual lateral shoulders") ; beyond the second lateral incision a promi- 

 nent serrated projection having three or more distinct minute teeth; 

 edge of pygidium bejond this projection unbroken; incisions median 

 and lateral scarcely below the general level of the edge of the pygid- 

 ium ; paraphyses very prominent and robust, pear-shaped, two promi- 

 nent ones at the base of each lobe, most of them fully lobe length, and 

 another below the second lateral incision ; also a few smaller para- 



385 



