24 B. C. ENTOMOLOGICAL SOCIETY 



antennae quivering, and when near their prey, would make a short rush 

 forward, stabbing the larvae with their beaks. 



Mating was first observed on July 22nd, but probably owing to an 

 insufficient food supply, I failed to get the females to oviposit. 



DESCRIPTION OF LIFE STAGES 



Egg. Height, 1.07 mm.; width, .80 mm.; width of cap, .56 mm.; shape, 

 oval cylindrical; smooth, glossy; base flattened; sides and cap slightly convex; 

 general appearance, brownish-black in color with large irregular areas of white 

 on the sides, cap black, surrounded by a narrow white circle, from the outer edge 

 of which arises a row of incurving white spines, sixteen to nineteen in number. 

 Eggs are laid in a double row firmly attached to one another and to their 

 support. 



Nymph: first instar. Body broadly ovate, narrowing anteriorl}-, broadly 

 rounded posteriorly. Average length, 1.76 mm. Average width, 1.60 mm. 

 Head, somewhat rounded in front, nearly twice as broad as long, posterior 

 margin rounded; width, including eyes, .72 mm. Prothorax narrow, curving 

 anteriorly, twice as wide as head, excluding the eyes, shortest at median dorsal 

 line, from thence widening slightly to lateral margins. Mesothorax one-fifth 

 shorter and slightly wider than prothorax, curving anteriorly. Abdomen, rounded, 

 dorsum convex, nearly 6ne half as long as wide. Antennae, stout, medium length, 

 slightly pubescent, terminal joint the longest, thickened and tapering at-proximal 

 and distal extremities. Length, 1.35 mm.; 1st segment, .15 mm.; 2nd segment, 

 .36 mm.; 3rd segment, .30 mm.; 4th segment, .53 mm. Legs medium length, 

 strong; hind tibia, .46 mm. Color, head, antennae, prothorax, mesothorax and 

 legs black, eyes red, abdomen crimson, conspicuously marked on the median 

 dorsal line with four quadrangular black spots; lateral margins spotted with 

 four quadrangular black markings; ventral surface of abdomen red, lateral mar- 

 gins spotted with black. 



Second Instar. Body longer, broadly pyriform, length 1.90 mm. — 2.6 mm. 

 Head, quadrate, anterior outline slightly curved, posterior margin curved, tylus 

 distinct, not shorter than juga, eyes prominent. Width, including eyes, .845 mm. 

 Prothorax, one-third wider than head, curving anteriorly. Anterior and posterior 

 margins nearly parallel, divergent at sides, lateral margins explanate. M esothorax 

 of nearly equal length and width to prothora.x, curving anteriorly, shorter at 

 lateral margins, anterior margin slightly curved, posterior margin broadly angled. 

 Metathorax very short at median dorsal line, from thence widening to lateral 

 margins, width scarcely exceeding mesothorax. Abdomen rounded, dorsum con- 

 ve.x, venter slightly convex. Antennae, more slender, pubescent; length, 1.93 

 mm.; 1st segment, .16 mm.; 2nd segment, .6 mm.; 3rd segment, .5 mm.; 4th 

 segment, .6 mm. Legs, strong, tarsi furnished with a few short hairs, claws 

 strong, recurved; length of hind tibia, .96 mm. Color, dorsal surface of head 

 and thorax black with a greenish metallic sheen, eyes red to brownish-black, 

 under surface of thorax, legs and rostrum piceous; antennae brownish-black; 

 abdomen crimson, with four quadrangular greenish-black spots on median dorsal 

 line, lateral margins spotted as before, the spots being relatively smaller than 

 in the first instar; ventral surface of abdomen crimson, lateral margins spotted 

 with black. 



Third Instar. Shape of body similar to previous instar, but abdomen more 

 rotund. Average length, 3.86 mm. Head, sub-uadrate, eyes prominent, anterior 

 margins of juga and tylus rounded, juga slightly longer than tylus, vertex rough; 

 width, including eyes, 1.6 mm. Prothorax, two and one half times wider than 



