211 



Phasmid^ 



Diaphcromcra fcmorata Say. Forest Walking-stick. (PI. LVI, fig. 6.) 



These insects were abundant in the upland forest (Sta. IV, a) ; 

 the following observations were made on them. A fuscous male (No. 

 64) was taken Aug. 16 crawling on hickory. When disturbed it fell 

 to the ground and remained quiet. A female was taken at the base 

 of a tree in a resting position with the antennse closely applied and 

 stretched forward. On August 17 a nymph was taken in an open 

 area; Aug. 20 (No. 103), a large gray female; a copulating pair 

 (No. 134), in which the female was gray and the male fuscous; and, 

 finally, a small immature male (No. 163) in the before-mentioned 

 resting position, on hickory. 



On the ravine slope (Sta. IV,h), memoranda are as follows: 

 Aug. 22 (No. 124a) three fuscous males, and a large gray female in 

 the resting position, and (No. 132), in copulation, a fuscous male 

 and a green female, the latter lacking the hind pair of legs. A green, 

 nearly mature nymph was taken in a wood-lot adjacent to the Bates 

 area Aug. 28 (No. 99). A large fuscous male was taken east of 

 Charleston on the Embarrass River at the "Rocks" Aug. 10 (No. 17). 



This walking-stick is distinctly a forest-inhabiting insect, but we 

 have another, Baciinculiis hlatchleyi Caud., which frequents the 

 prairie, though it was not found about Charleston. Occasionally 

 fcmorata becomes of economic importance. Riley (Rep. U. S. Dept. 

 Agr., 1878, pp. 241-245) studied its life history and habits and found 

 that some predaceous bugs prey upon it. The Severins (Jour. Eco- 

 nomic Ent., Vol. 3, pp. 479-481. 19 10) have shown experimentally 

 that the hatching of the eggs is facilitated by moisture. T. T,. Hank- 

 inson found a phasmid nymph, about an inch long, June 28, 191 1, in 

 the woods (No. 7678). 



The behavior of our species is wortliy of more attention than it 

 has received. In such a study, reference should be made to a sugges- 

 tive paper by Stockard on the "Habits, Reactions and Mating In- 

 stinct of the 'Walking-Stick' Aplopus Mayeri" (Pub. No. 103, Car- 

 negie Institution, pp. 43-59. 1908) ; or, if the color changes are 

 studied, Schleip's paper on "Der Farbenwechsel von Dixippus moro- 

 sus (Phasmidae)" (Zool. Jahrb. Bd. 30. Abt. Allgem. Zool. u. Phy- 

 siol., pp. 45-132. 1910) should be consulted. Cf. Caudell, Proc. U. S. 

 Nat. Mus., Vol. 26, pp. 863-885, 1903. 



ACRIDIID^ 



Tettigidea lateralis Say. (PI. LVII, fig. 3.) 



A grouse locust was found in the dry upland forest (Sta. IV, a) 

 on the ground Aug. 20 (No. 109). 



