F-514869 
Figure 123.—Mature larvae and galleries of the hemlock 
borer, Melanophila fulvoguttata, on the surface of the 
sapwood. 
broader, if any, than the first abdominal segment. The adults are small and oval, and 
they feed on the leaves of hardwoods, sometimes riddling them with holes. The 
larvae mine the tissues of the leaves. B. tesselatus F. is very common on scrub oak 
in the sandhills of the southeastern Coastal Plain. Heavy annual defoliation is not 
unusual (/2/2). B. ovatus (Weber) also mines the leaves of oak. B. aeruginosus 
Gory mines the leaves of elms. 
Numerous other species of bark- or wood-boring buprestids are also encountered 
in eastern trees. Ptosima gibbicollis (Say) breeds in living redbuds. The adult is 
dark blue, about 6 mm long, and has two yellow spots on each wing cover. Damage 
is sometimes severe. Trachykele lecontei (Gory) breeds in dead baldcypress in 
Southern States. The adult is dark, ashy bronze, with black, velvety spots, and is 
about 9 mm long. The larvae feed in both the sapwood and heartwood, often 
causing a serious degrade of lumber. Actenodes acornis (Say) breeds in the dry 
heartwood of red maple, birch, beech, oak, and hickory; Poecilonota cyanipes 
(Say) breeds beneath the bark at wounds on living poplars; P. thureura (Say) breeds 
beneath the bark at wounds on willow; Agrilaxia flavimana (Gory) breeds in the 
small branches of white oak; and Cinyra gracilipes (Melsheimer) breeds in the dead 
branches of oak and eastern hophornbeam. 
Family Cerambycidae 
Longhorned Beetles or Roundheaded Borers 
The family Cerambycidae is one of the largest and most important of the families 
of wood-boring beetles. More than 1,400 species have been recorded from the 
United States, about 450 of which occur east of the Mississippi River (373). A list 
of 262 species either known or believed to occur in Ohio alone was published (682); 
285 
