32 OHIO STATE ACADEMY OF SCIENCE. 



segment, are white, waxy plates or lamellae. In the adult female, the 

 lamellae are united posteriorly, forming a long, parallel-sided mar- 

 supium, which contains the eggs and young. The arrangement of the 

 lamellae can be better shown by a figure than by description, q. v. 

 Antennae eight-jointed, all fulvous except the black, somewhat fusoid 

 eighth joint; the first joint is very stout, the second the shortest and 

 stouter than the remaining ones. Legs light brown, the darker tarsi 

 bearing numerous fine spines. 



Adult Male: The slender dusky body is about 1mm. in length, 

 and bears two large ovate, transparent wings with two veins united 

 at the base. Wing expanse, 2.5 mm. The last segment bears on either 

 side a long white filament. 



Remarks : This insect is a destructive pest in greenhouses, 

 seriously infesting Lantana, ChrysantJienium and Verhena in the 

 Ohio State University Conservatory. 



ORTHEZIA SOLIDAGINIS Sanders. 



Fig. 57-G3, 77. 

 Sanders, Ohio Naturalist, iv, 4, p. 94 (1904). 



Adult female: Length (including marsupium), 6 mm.; width, 

 2.5 mm. Body completely covered by white waxy secretion in four 

 series; two inner series composed of eight pairs of lamellae extending 

 laterally from median line with tips turned backward and upward, 

 gradually increasing in length to the sixth then rapidly decreasing; 

 the ninth pair jointed at tips forming a ring around anal orifice. The 

 two lateral series are each composed of ten lamellae, all turning back- 

 Avard except the first on either side. The second and third lateral 

 lamellae are subequal, the others increasing in length to the long sub- 

 equal eighth and ninth, reaching midway on the marsupium; the tenth 

 pair are very short and inconspicuous. A lamella extends downward 

 between the antennae to the ventral surface. The marsupium is 

 fluted on the dorsal surface, plain ventrally and gradually narrowed 

 and elevated posteriorly. 



Body, antennae and legs dark reddish-brown. Antennae 8-jointed 

 bearing scattered hairs and with distal ends of joints enlarged; the 

 fusoid eighth joint with a terminal spine and with distal half black. 

 Formula:— 3, 8, (4, 5, 2,) 6 (7, 1). Length of joints in mu: — (1) 135, 

 (2) 150, (3) 205, (4) .150, .(5) 150, (G) 141, (7) 135, (8) 180. Legs large 

 and strong, rather spiny, with femur and tibia of almost exactly equal 

 length and tarsus nioi-e than half the length of tibia; large claw with 

 three to four denticles and a pair of short flattened digitules. 



The body is thickly covered with tubules about 20 mu long, and 

 small derm-orifices. The anal ring is elliptical bearing six hairs and a 

 narrow chitinous band on each side of orifice, and is thickly dotted. 



