76 
THE CHINCH BUG. 
Fig. 18— Blissus dorice: a. first nymph; c, second: b, third : 
d, fourth. (From illustrations prepared in the Division 
of Entomology.) 
Ferrari, in Genoa, recognized only the wingless form, which with its aborted wings 
looks very much like Hemipteron-nymphs, and probably by all entomologists who 
previously saw it was not considered as a sexually developed adult, but only the 
immature form of some already known species. I discovered the winged form seven- 
teen years ago(1880)in the steppes 
sand desert, called "Nyires" of 
the Kis-Szent-Miklos, and de- 
scribed the same." 
I at that time made known 
the characters of the immature 
forms, which can not be confused 
with the individuals which have 
reached complete sexual devel- 
opment, in that the immature 
individuals are vermilion red 
while adult individuals are dark 
brown. It is interestiug that 
the relationship between the 
winged (macropterous) and the 
wingless (brachypterous) indi- 
viduals of the American and Eu- 
ropean species is very different. 
For while in America those individuals which reach maturity are almost always 
winged, with us in Europe they are in general-only short-winged, and individuals 
capable of flight are not observed; and the fully developed ruacropterous individ- 
uals were not thus far, according to my knowledge, found in any otber place than 
in the central Hungarian sand dunes already named, and here they occurred only 
on a single little portion which only measured a few paces in diameter. It was 
a "Dunenhugel" (sandy hill) covered with high, scattered poplars, whose fallen, 
dried foliage sparsely covered the ground. 
Here lived the colonies of Blissus doHce on the bases of the bushy, growing grass, 
almost under the surface of the 
ground, and well concealed. The 
habits of the European species are 
also in the main similar to those of 
her American relative, since the latter 
also lives only on grasses, and during 
its development also lives very close 
to the surface of the ground. 
It is extremely remarkable that, 
even though B. dorice is very widely 
distributed here, and is met with 
not only on the "Flugsande" (sand 
drifts), but also in the hilly regions 
(e. g., on the southern exposure of 
the hill which stands between Duka 
and Szod, in the midst of bluffs or 
rolling hills), the winged specimens 
were to be found only on the very 
small lc Blissus Island" under the poplars. But here also they were found but 
rarely, and only then when the transformation from the pupa to adult stage was 
in full force. When there were no more pupre to be found, then also the search for 
long-winged individuals was in vain. 
*K. Sajo: Die bisher unbekannte makroptere Form von Blissus dorm Ferr. Ento- 
molog. Nachrichten, 1880, p. 235. 
Fig. 19. — Blissus dorice. Wingless form at left; 
winged form at right. (From illustration pre- 
pared in the Division of Entomology.) 
