ENTOMOLOGY 817 
Pneumonyssus Banks 
The genus Pnewmonyssus was established by N. Banks! for a parasitic 
mite taken from the lungs of an East Indian monkey (‘‘Cynocephalus’’), from 
southern Sumatra. A number of lung mites have now been described, generally 
from monkeys kept in captivity, as may be seen from the subjoined list; but 
some of these species are doubtfully distinct. 
Pneumonyssus simicola N. Banks, 1901, Geneesk. Tijdschr. Nederl. Indié, XLI, p. 335 ( ?); 
1904, Proc. U.S. Nat. Mus., XXVIII, p. 53, figs. 94-96. In the lungs of a monkey (“‘ Cynocephalus’’) 
from southern Sumatra. 
Pneumonyssus duttoni Newstead and Todd, 1906, Liverpool School Trop. Med., Memoir 
XVIII, p. 42, Pl., figs. 1-10 (9). Newstead, Dutton and Todd, 1907, Ann. Trop. Med. Paras., I, 
p. 97. In the bronchial passages of Cercopithecus schmidti, in the Kasongo district, Belgian Congo. 
Pneumonyssus griffitht Newstead, 1906, Liverpool School Trop. Med., Memoir XVIII, p. 48, 
Pl., figs. 1-8a(¢). In the lungs of an Indian monkey, Macacus rhesus, kept in captivity in England. 
Pneumotuber macact Landois and Hoepke, 1914, Centralbl. Bakt. Parasitenk., Abt. 1, Orig., 
LXXIII, p. 3938, figs. 1-3, Pl., figs. 1-3 ( ¢). In the lungs of Macacus rhesus, kept in captivity at 
Breslau. The genus Pnewmotuber is most probably identical with Pnewmonyssus. 
Pneumonyssus fort Weidman, 1915, Jl. of Parasitology, II, p. 44, Pl., figs. 1-10(a# 9). In 
nodules under the pleura of Macacus rhesus, kept in captivity at Philadelphia. This parasite was at 
first doubtfully referred to Pneumotuber macaci (Weidman, 1915, Jl. Comp. Path. Therap., XXVIII, 
pp. 326-330). The following investigators also found mites in the lungs of Macacus rhesus, which 
they referred to P. fori: Duncan, 1920, Jl. Roy. Micr. Soc. London, XLIII, pp. 163-168, Pl. IV 
(monkeys in captivity in England); Helwig, 1925, Amer. Jl. Path., I, pp. 389-395, Pls. LXI-LXII 
(monkeys in captivity at the University of Kansas); and Gay and Branch, 1927, Amer. Jl. Trop. 
Med., VII, pp. 49-55, figs. (in 20 out of 25 monkeys recently arrived in New York from India). 
Pneumonyssus sp. n., regarded as distinct from those known to him, but not named; Wurm, 
1926, Centralbl. Bakt. Parasitenk., Abt. 1, Orig., XCVIII, pp. 514-521, fig. 6( 9). In the lungs of 
Macacus rhesus, in captivity at Tubingen. 
J. A. Murray, 1919, Proc. Zool. Soc. London, p. 14, also mentions the occurrence of unnamed 
parasitic mites in the lungs of Macacus rhesus at the London Zoélogical Gardens. 
A parasitic mite, found by the Harvard Expedition in a baboon of the 
eastern Belgian Congo, was referred for study to Dr. H. E. Ewing, who has 
recently described it as a new species of Prewmonyssus. In his paper Dr. Ewing 
also gives a key to the four lung mites from monkeys that give every evidence 
of being distinct species.” 
Pneumonyssus congoensis Ewing 
Pneumonyssus congoensis Ewing, 1929, Proc. Ent. Soc. Washington, XX XI, p. 129 ( ¢). 
BELGIAN ConGco.— Lulenga, in the windpipe of a young baboon, Papio 
tessellatus Elliot, March 4, 1927. The animal was apparently in perfect health. 
The following is a copy of the original description: 
“ Adult female. — Capitulum quadrangular, about one and a half times as long as broad, with 
retracted chelicerae occupying most of internal space. Palpi greatly reduced, in length not equal to 
width of capitulum; first segment very short, disclike, about three times as broad as long; second 
1 Banks, N. 1901. ‘A new genus of endoparasitic acarians.’ Geneesk. Tijdschr. Nederl. Indié, 
XLI, pp. 334-836. 
See also: Grijns, G. and De Haan, J. 1901. ‘Acariden als endoparasieten.’ Geneesk. Tijdschr. 
Nederl. Indié, XLI, pp. 176-178, figs. 9-11 (on PI.). 
2 Ewing, H. E. 1929. ‘Notes on the lung mites of primates (Acarina: Dermanyssidae), including 
the description of a new species.’ Proc. Ent. Soc. Washington, XX XI, pp. 126-130. 
