4 1 8 OrtheziincB. 



Genus ORTHEZIA. 



Species with eight or more joints in the antennas of the adult female. Limbs 

 with the tarsus distinctly deniarked from the tibia, though the junction is so 

 close and firm that it is doubtful if there can be any functional articulation. 

 Other characters as given under the description of the sub-family. A single 

 species only is recorded from Ceylon. 



ORTHEZIA INSIGNIS, Dougl 



Orthesia insignis, T>oug\s.s, Journ. Qiiekett Micr. Club, p. 169 (1887). 

 „ „ „ Enf. Mo. Mag., Vol. XXIV. p. 169 (1889). 



„ nacrea, Buckton, Ind. Mus. Notes, Vol. Ill, No. 3, p. 103 (1894). 

 „ insignis, Green, Tropical Agriculiiirist, p. 437 (1895). 



Adult female [Jigs. 2, 3, 4, 12) dull olive green or olivaceous brown ; antennae 

 reddish brown, the apical joint blackish ; limbs reddish brown. Broadly oval ; 

 flattish or slightly concave above, tumescent beneath. Margin with a series of 

 ten white, flattish, laminate, waxy processes on each side ; the processes short 

 and broad on the thoracic area, elongate and tapering on the abdomen. Dorsum 

 with a median series of twelve pairs of smaller white processes ; the anterior 

 three directed upwards and forwards ; the following three pairs more widely 

 separate, directed upwards and outwards ; the remaining six approximate, 

 narrow, elongate, and directed backwards ; the dorsal surface otherwise naked, 

 showing distinct segmentation (see fig. 2). Under surface {fig. 4) with incom- 

 plete rings of white secretion encircling the rostrum and limbs ; a pair of white 

 processes projecting backwards from between the hind legs ; abdomen with a 

 broad white band across the base and a broad white submarginal zone which 

 eventually form the support of the ovisac. Antennae {fig. 9) moderately stout ; 

 eight-jointed ; tapering from the broad base to the sixth joint, sixth to eighth of 

 approximately equal diameter ; eighth longest, a little longer than the previous 

 two together ; all the joints with a few short spiniform hairs, the apex of the 

 eighth with a longish stout spine (see fig. 10). Eyes prominent, truncately 

 conical. Rostrum stout, conical, prominent, longer than broad, with a group of 

 short setcB at its apex. Legs long and strongly developed ; trochanter so closely 

 fused with the femur {sttfig. 13) that its boundaries are indistinguishable ; tibia 

 of same length as the femoral segment ; tarsus rather less than half the length 

 of the tibia ; the junction between tibia and tarsus distinct, but the two segments 

 are so firmly and closely attached to each other that it is doubtful if there can 

 be much movement between them ; claw (yf^. 14) with a distinct denticule on 

 the inner edge, at a distance of about one-third from the apex ; ungual digitules 

 simple, tarsal digitules absent or represented by two small spines ; the whole 

 limb with series of short spiniform hairs. Anal ring {fig. 5) with six longish 

 stout setae. Thoracic spiracles large ; but rather inconspicuous, being situated 

 near the margin of the body where they are obscured by the ceriferous tracts. 

 There are seven small spiracles on each side of the abdomen, of which the 



