4 
The metasternum, usually feebly convex, is in some species distinctly 
inflated, particularly in the males, and in the males of Anoplodera isabellae 
Hop. and sexspilota Lee. it bears distinct longitudinal carinse. 
The metepisternum varies from a short and broad subtriangular 
shape, common in most of the genera, to a very elongate condition with the 
sides parallel for the greater part of the width, as in the genera Pidonia 
and Grammoptera . This condition varies in Anoplodera , the metepisternum 
being noticeably slender in some species, particularly in aspera Lee. and 
mutai Us Newm. 
The Pubescent Sole 
'he underside of the first three segments of the fore and middle tarsi, 
and of the third segment of the hind tarsi, are invariably clothed with a 
dense carpet of erect, slender, pile-like setae, known as the pubescent sole. 
This condition is in many cases present on the second hind tarsal segment 
and is present on the first segment also throughout the first division of the 
tribe, from Pyrotrichus to Pidonia, and in the genera Grammoptera 
and Alosterna. It is rarely found in the succeeding genera; but it is dis- 
tinctly present in a few species, such as Anoplodera mutabilis Newm., 
A. aspera Lee., A. valida Lee., A. insignis Fall, A. obscura n. sp., A. 
matthewsi Lee., and A. biforis Newm. Usually, in the latter part of the 
tribe, the underside of the first hind tarsal segment is clothed with 
stiff setae, little more densely than the normal condition; but in a number 
of species, such as Anoplodera instabilis Hald., and A. proximo Say, this 
area is covered by a brush of very stiff, stout, suberect setae, forming a 
distinct tarsal brush, in some cases deceptively similar to the true pubescent 
sole, until examined very carefully. The recurrence of this pubescent sole 
in species of the genus Anoplodera suggests a closer relationship with 
Pidonia and Acmaeops. 
There is considerable variation in the relative lengths of the tarsal 
segments. In Leptura propinqua Bland, for example, the first segment of 
the hind tarsus is exceptionally long. In some species the third segment 
of the hind tarsus is cleft nearly to the base; in others it is strongly emar- 
ginate or not cleft beyond the middle. In a few cases these characters 
have been utilized in separating the species and genera. 
Sexual Differences 
The males of this group are, as a rule, smaller than the females and 
usually have longer and more slender antennse; but in some species males 
and females occur with the antennae of equal length, and there may be 
great variation in this regard even in the same sex. The ante rinse of the 
males are commonly somewhat serrate, and that condition is present also 
in the females of some species to a lesser degree. 
The differences in the terminal segments of the abdomen provide the 
most reliable distinction between the sexes. The last tergite of the female, 
the seventh visible segment, is elongate, subtriangular, usually margined 
along the sides, rounded or rarely truncate or feebly emarginate at the 
apex. It bears few distinctive characters, but in a few species, Anoplodera 
proximo Say and allies, it is variably carinate on the middle line near the 
apex. In the male, this segment is represented by two shorter tergites, in 
