June, 1909.] Ohio Forms of the Genus Lepidocyrtus. 
533 
Still smaller individuals than the above have been found and 
it is believed that 0.20 mm. would be a good average for the length 
of freshly hatched larvae. 
One Week after the larval forms were first noticed the insects 
averaged 0.40 mm. in length, an increase of not quite 0.10 mm. 
The eves were still not visible. 
Three weeks later the average length was 0.55 mm. When 
the forms showed little change other than an increase in size. 
One specimen, however, was covered with drops of moisture as 
if just ready to molt. In a short time the skin split along the 
mid-dorsal line of the thorax, and the old skin was cast off. For 
the first time in the life of the now probably five week’s old 
larva the very minute, red, bead-like eyes were visible at the 
sides of the head at the bases of the antennae. In other words, 
twenty-eight days had elapsed after the larval forms of 0.32 mm. 
were first observed before there was any sign of eyes. The 
forms were now positively identified as L. sanguineus. 
From the appearance of the eyes of L. sanguineus until the 
adult stage is reached the growth is very slow. Nearly four 
weeks after the appearance of the eyes the average length of the 
specimens was 0.7 mm., which may be considered that of the 
adult form. 
The following table will show in brief the relative growth of 
the insects from the larval to the adult stages: 
AVERAGE LENGTH 
OF INSECT. EYES. 
March 25. 0.32 mm. Absent. 
April 1. 0.40mm. Absent. 
April 22. 0.55 mm. Present. 
May 4. 0.575 mm. Present. 
May 19. 0.70 mm. Present. 
Specimens of the above species have been kept alive in 
artificial cells for over ten weeks, but we can not say at present 
just how long the life of the average individual may be. 
Lepidocyrtus Luteus n. sp. PI. XXXI. 
(Description taken from living and mounted specimens.) 
Color: a light bronze or clay color, with iridescent scales reflecting 
shades of blue and pink. Antennae: I short; II twice as long as I; III 
shorter than II; IV not quite so long as II plus III. Eyes: black, eye 
spot much elongated, very characteristic in the arrangement of the eight 
ocelli. A prominent fringe of clubbed hairs on the mesonotum. An 
extreme type of Lepidocytrus in the strongly projecting mesonotum, 
which comes to a decided point over the head, nearly concealing the head 
beneath it. Barbed hairs are found on various parts of the body, scat¬ 
tered over the spring, abdomen and legs. Legs: with two claws, both 
curved in the same direction; the larger unusually broad and bearing two 
teeth, the smaller very slender. Abdomen long and slender; IV about 
seven times as long as III. Spring: manubrium shorter than dentes; 
dentes sub-annulated; mucrones as usual, with two hooks, and a long spur 
extending from base to opposite ante-apical hook; long barbed hairs 
extending to tip and beyond mucrones. Length, 1-1.5 mm. 
