

ENTOMOLOGICAL NEWS 



AND 



PROCEEDINGS OF THE ENTOMOLOGICAL SECTION 



ACADEMY OF NATURAL SCIENCES, PHILADELPHIA. 



VOL. XXII. 



NOVEMBER, 1911. 



No. 8. 



CONTENTS: 



Marlatt A Newlv-imported Scale-Pest 

 on Japanese Hemlock (Rhynch.) .. 385 



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 Larva 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. MARLATT, Bureau of Entomology, 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. 



Scnle 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 beyond 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 



