REPORT OF THE STATE ENTOMOLOGIST I914 91 



darker brown markings laterally and at the latero-posterior angles; 

 laterally an irregular, fuscous brown sclerite extends from below 

 the spiracle to the anterior margin of the segment. Second and third 

 thoracic segments, each with two pair of submedian, irregularly 

 oval bisetose tubercles, the pair on the second segment approximate; 

 laterally near the stigmatal line there are two tubercles, the anterior 

 irregular, bisetose, the posterior nearly circular, unisetose; at the 

 base of each true leg a large, irregularly angular, unisetose tubercle. 

 Abdominal segments with two pair of submedian tubercles, the 

 anterior broadly oval, the posterior narrowly oval and more distant, 

 both unisetose; laterally just above the spiracle an angulate, unisetose 

 tubercle and a little below the spiracle an oval, bi- or trisetose 

 tubercle; the 13th segment with a large median, ovoid, polysetose 

 tubercle, the suranal plate with about 8 long, stout, reddish setae; 

 true legs yellowish with variable, darker brown markings; prolegs 

 whitish transparent, the circle of claws reddish brown. 



Pupa. Length 3 mm, mostly a slaty reddish brown, the lateral 

 anterior angles of the mesonotum marked by an oval elevation, the 

 central portion of which is yellowish brown; the first to fourth 

 abdominal segments narrowly margined dorsally next the wing 

 pads with fuscous yellowish, the incisures yellowish, cremaster 

 consisting of about 8 slender, yellowish red spines. Leg, antennal 

 and ventral third of wing cases an obscure yellowish, the spiracles 

 reddish orange. 



Red spider (Tetranychus telarius Linn.) . Red spiders, 

 according to reports received from Mr W. H. Hart of Arlington, 

 became so abundant the latter part of July in a young apple 

 orchard, that it was deemed advisable to spray for the purpose 

 of controlling the pest. A thorough application of a lime-sulphur 

 wash diluted 1 to 45 and containing 2 pounds of arsenate of 

 lead to 50 gallons of water, was made and about two weeks later 

 Mr Hart reported the treatment as being extremely efficacious, 

 the sprayed trees being almost wholly free from the red spider, 

 while the unsprayed trees were badly infested and showed per- 

 ceptibly browner foliage. The sulphur wash was undoubtedly the 

 efficient agent in this treatment. 



