MACROTRACHELIA. 319 
Division ANTHOCORARIA, Reuter. 
The species of this section of the Anthocorine have the third and fourth antennal 
joints comparatively stout, and the wings with a hamus in the cell. | 
MACROTRACHELIA. 
Macrotrachelia, Reuter, Ofv. Vet.-Ak. Férh, 1871, p. 566; Monogr. Anthocorid, pp. 55, 57 (1884). 
The type and only known species of this genus is Anthocoris nigronitens, St&l, from 
Rio Janeiro. Macrotrachelia proves to be well represented in Central America, whence 
six species are now recorded, all abundantly distinct and easily distinguishable by the 
table given below. The genus is one of the best marked amongst the Anthocoride, 
and at once recognizable by the broad black stripe which extends down the middle of 
the membrane to the apex. In two of the Central-American species the eyes are long 
and coarsely faceted in the males. ‘The orifice of the odoriferous sac varies in form 
according to the species, and the length of the rostrum also. 
The Macrotrachelie closely resemble various species of Thrips. 
a. Elytra shining, each with a very broad whitish or pale flavous vitta 
occupying the greater part of the clavus and corium (leaving a sutural . 
and a marginal black stripe); rostrum very short, not nearly reaching 
the anterior coxe. 
a’, Antenne elongate, all the tibiz ochreous at the apex; eyes small in 
both sexes. 
a”, Antenne with joint 3 ochreous at the base, joints 1 and 2 moderately 
stout . 2. 1. . . . ee ee ee we 8 ww. elongata, n. sp. 
6”. Antenne with joints 3 and 4, ochreous, 1 and 2 rather slender . . albovittata, n. sp. 
6’. Antenne comparatively short, entirely black, and the tibize also; eyes 
largerin the male . 2. 1 6 6 1 ee ee we we ew . . nitida, n. sp. 
b. Elytra opaque, with a shining space down the outer portion of the corium, 
and with lines of glistening golden pubescence ; eyes large and coarsely 
faceted in the male, small in the female; rostrum about reaching the 
anterior cox. . 
e’, Antenne with joint 3 entirely ochreous ; elytra with a flavo-testaceous 
vitta on the outer portion of the corlum . . . - + 6 « « © thripiformis, n. sp. 
d’, Antennz with the basal half of joint 3 ochreous ; elytra not or 
obscurely vittate. . . se ee ee se e 6 6 « Migronitens, Stal, 
e. Elytra aJmost entirely opaque, with lines of silvery pubescence ; antenne 
short, with joint 3 entirely ochreous; eyes small in the male; rostrum 
nearly reaching the anterior cox. . . . . . . « + 6 « + | 6Opacipennis, n. sp. 
1. Macrotrachelia elongata, n. sp. (Tab. XIX. figg. 14,144, 9.) 
Elongate, narrow, very sparsely pilose, almost smooth, shining; black, each elytron with a broad pale 
flavous vitta extending down the clavus and corium from the base and continued along the outer portion 
of the membrane to near the tip; the base of the third antennal joint and the apices of all the tibiz 
ochreous, the tarsi obscure testaceous. Eyes rather small and similar in both sexes. Antenne elongate, 
