SUBFAMILY II. BATRACIIIIUX.K. 18o 



T. latcralia ranges from New Jersey and central Indiana west 

 and south to Florida, Louisiana, Oklahoma and New Mexico, and 

 is said by Relin ( 1!)<>9, 201) to occur "all over the Island of Cuba." 

 Tctrlr iioli/iiiorplia Burmeister (1838, 059) is a name given to the 

 short form while Tcttighlca nicdialis Hancock (1902, 152) is an 

 intermediate form connecting typical latcralis with its northern 

 race parvipennis. 



An examination of the type of Tctt'uj'nlca acuta Morse (1895, 

 15) leads me to place it as a form representing an individual 

 variation of T. lateral!*. It is, as it were, a sort of connecting link 

 between lateralis and arntata, being lateral-is with a short, acute 

 projection of front margin of pronotum and arniata, with shorter 

 cusp than usual and a more convex pronotum. It is known only 

 from three females in the Cambridge collection in New York and 

 one in the Hebard collection taken by Davis on Staten Island. 



77a. TETTIGIDEA LATERALIS PARVIPENNIS (Harris), 1841, 152. Sedge Grouse 

 Locust. 



This, the northern race of lateralis, differs from the typical form 

 mainly by the characters given in the key. In general the body is more 

 robust, the humeral angles more pronounced and the outline of the dorsal 

 surface of pronotum more irregular in front of the shoulders. The shorter, 

 stouter joints of the antenna?, less prominent eyes, and the usually more 

 distinct angulation of the front border of the 'pronotum (PL II, Fig. 5.) in 

 parvipennis are the most obvious characters separating the two forms. 

 In color they are alike, while in Indiana specimens the pronotum is more 

 strongly rugose than in lateralis. The measurements are approximately 

 the same, those of the short form, or typical parvipennis, being slightly 

 less than those of the corresponding form of lat'eralis. 



T. parvipennis is a very common grouse locust throughout 

 northern Indiana, frequenting dry upland woods, fence rows, 

 and low marshy tracts; but in the southern portion it is largely 

 replaced by lateralis. Its mating season appears to be the whole 

 year round, as I have taken specimens in copulation in nearly 

 every month, even on sunny days in mid-winter. It hibernates 

 usually in small colonies or groups as many as eleven having been 

 found huddled together within the space of a few square inches 

 on the under side of a log or chunk. Walker has found it hibernat- 

 ing in a beetle-boring in a log, the hole being completely hidden by 

 the bark. The general color of the pronotum varies greatly in 

 different examples, each insect seemingly seeking that local habi- 

 tat which corresponds closely to its hue. 



It ranges throughout the Transition and Tpper Austral life 



