56 FAMILY I. FORFICULID^E. THE EARWIGS. 



Mineral Springs, Oct. 2 (Gerhard). Agricultural College, Mich., 

 July 14 (Weed). Ranges from New Jersey and southern Mich- 

 igan west and south to Nebraska, Georgia and Louisiana. 



Hebard (1917, 322) states that three specimens from Morgan 

 City, La., are the only ones known having the inner wings fully 

 developed. This earwig is usually found only on grasses and sedges 

 growing near or even in water, 15 and probably hibernates as imago 

 beneath rubbish in the vicinity. Burr (1910, 464) and Caudell 

 (1913, 596) have placed aculeatum as a synonym of Doru Hue-are 

 (Esch.), but comparison with specimens of lineare in my collec- 

 tion from Orizaba, Mexico, show that Rehn & Hebard (1914e. 00) 

 are fully justified in considering the two distinct. 



11. DORU DAVISI Rehn & Hebard, 1914e, 95. Davis's Earwig. 



Differs from aculeatum in its much more slender body, in having 

 the forceps of male longer than abdomen, more slender, curving feebly 

 downward in basal third, thence upward to apex, the preapical tooth want- 

 ing; pygidial spine of male distinctly longer and more acicular; the fe- 

 males differ from those of aculeatum only in the more slender form and 

 in being somewhat paler. Length of body, $, 11-5, 9, 8.3 8.5; of prono- 

 tum, $, 1.9, $, 1.6; of tegmina, $, 2.73, $, 2.1 2.6; of forceps, $, 

 6.58.7. $, 3.3 3.5; of pygidial spine, $ , 1.8 2.2 mm. (Fig. 2G d.) 



The types of R. & H. were taken by W. T. Davis, May 2, 1912, 

 from the South Bay of Lake Okeechobee, Fla. He states (R. & H., 

 1914d, 98) : "A winding path led along the shore of South Bay, 

 between the water and the thick growth of custard-apple trees, 

 and on the low tangled vegetation bordering this path we found 

 D. davisi in considerable numbers." On March 2, 1913, this slen- 

 der-bodied earwig was first seen by the writer when three pairs 

 were taken on the north margin of Lake Okeechobee. On March 

 8 two additional males were found at Pelican Bay on the south- 

 eastern shore of the lake. At both places it was beaten or swept 

 from vegetation within 50 feet of the border of the lake. 



In 1918 a second trip was made by me to Lake Okeechobee, 

 one of the objects in view being a search for additional specimens 

 of Doru (Jurifti. On March 2, a single specimen was accidentally 

 discovered while sifting for beetles in a low wet tract about five 

 miles southeast of Moore Haven. The place where found was 

 part of the old custard-apple margin of the lake, now drained 

 and partly grown up to arrow-leaf, saw-grass and other semi- 

 aquatic vegetation. After an hour's search the abiding place of 



15 Caudell, Proc. Ent. Soc., Wash., XVII, 1916, ji/; Fox (1917, 206); Hebard (1917, 

 322). 



