ORTHOPTEEA OF INDIANA. 445 



(/(/. Wholly pale greenish or yellowish, translucent; marks on 



antennaj elongate, parallel, distinct _ 



143 quadripunctatus, p. 452 



139. CEcANTHUS LATiPENNis Riley. The Broad-winged Tree Cricket. 



(Ecavthm latlpeiinw Riley, 12 1, 1881, 61 ; Id. , 1 2 2, n, 1884, 182 ; Brun. , 

 23, 1888, 120, Fig. 39; Id., 32, 1895, 69, 113, Fig. 40; McNeill, 

 8 8, VI, 1891, 6; Hart, 7 3, III, 1892, 33, Fig. 6; Beut., 3, VI, 

 1894, 272; Lugg., 84, 1898, 273, Fig. 184; Scndd., 188, 1900, 

 90. 



Size, large. Color of male greenish white; of female, pale yel- 

 lowish green. Antennse with basal joints destitute of black mark- 

 ings; these joints and top of head usually roseate or 

 pinkish. Tip of ovipositor dark. Tegmina of male, 

 when unfolded, four-fifths as wide as long, much 

 wider than in any other species. Inner wings of 

 male shorter than tegmina; those of female equaling 

 or slightly exceeding the tegmina. 



Measurements: Length of body, male and female. Fig. 113. Four ba- 

 12.5 mm.; of pronotum, male and female, 3.1 mm.; sal joints of an- 



„, . iHr £ T -I A f- J?- tenna; of CEcan- 



ol tegmina, male, 15 mm., female, 14.5 mm.; of inner <^„, latipennis 

 wings, male, 12 mm., female, 15 mm.; of hind ^i^ey. (After 

 femora, male and female, 10 mm.; of ovipositor, 6.5 

 mm. Width of dorsal surface of tegmina of male, 7.5 mm. 



This species has been taken only in Vigo and Putnam counties, 

 but probably occurs in all parts of the State, as its range covers the 

 United States east of the Great Plains. It lives mainly on shrubs 

 and vines along the borders of thickets and fence rows, and with us 

 is most abundant from August 10th to October 1st. 



The eggs of the broad-winged tree cricket are laid in the pith of 

 the smaller twigs of shrubs and vines, preferably in the slender twigs 

 of the wild and cultivated grapes. Dr. Eiley has described the 

 method of oviposition as follows: "The jaM^s are first used to slight- 

 ly tear the outer bark. With the antennse stretched straight for- 

 ward and the abdomen bent up ?o as to bring the ovipositor at right 

 angles with the cane, the female then commences drilling, working 

 the abdomen convulsively up and down about twice each second. 

 The eggs are laid lengthwise in the pith, but always in two sets, one 

 on each side of the hole. The number varies according to the size of 

 the cane, and the distance between the holes is also variable. The 

 hole is usually filled up with a white mucous secretion, though there 

 is very little of it about the eggs. This secretion also doubtless serves 

 to facilitate the drilling. The same female will lay over 200 eggs, 

 and will sometimes puncture the same cane at intervals of one-third 

 of an inch for one and a half feet or more." 



