42 PROCEEDINGS OF THE NATIONAL MUSEUM VOL. 120 
and postspiracular seta; females with approximately the same number 
of abdominal sternal setae as males; both sexes having abdominal 
sternite I with fewer than 20 total setae and abdominal sternite II 
with fewer than 44 total setae; male terminal abdominal sternite IX 
projecting posteriorly as rounded lobe and with complete division 
from abdominal sternite VIII; male genitalia with parameres poste- 
riorly split and curved inwardly; female terminal abdominal tergite 
with fewer than 12 setae on posterior margin; female abdominal 
sternite VIII with fewer than 24 setae on posterior margin. 
Hosts: Bucerophagus forcipatus has been found only on the genera 
Buceros and Rhinoplaz of the avian family Bucerotidae. 
Bucerophagus forcipatus (Nitzsch) 
Fiaures 51, 52, 60, 66, 67 
Menopon forcipatum ‘‘Nitzsch.””—Giebel, 1874, p. 289, pl. 15 (figs. 7, 8.) [Type 
host: Buceros rhinoceros—=Buceros rhinoceros sumatranus Schlegel and Miiller, 
1840. 
gee forcapatum ‘‘Nitzsch in Giebel.’’—Kichler, 1947, pp. 3, 20, figs. 3-5. 
Bucerophagus forcipatus (Nitzsch).—Hopkins and Clay, 1952, p. 64. 
Eichler’s description and figures are not recognizable. He des- 
ignated specimens from Buceros rhinoceros from Sumatra as neotype 
material, but he did not select a neotype. His slide specimens have 
been remounted and examined; the male, 2275 ji, is designated hereby 
as neotype. The slide has been so labeled. The female, 2275 jf, 
is mounted on the same slide with the neotype. 
Male: As illustrated in figure 67. Smaller than Bucerophagus 
africanus in all measurements except length of head and width of 
metathorax (table 12). Metasternal plate trapezoidal, expanded 
anteriorly, with 6-12 setae (fig. 66c). Abdominal sternite I with 
6-18 total setae and abdominal sternite II with 30-36 total setae. 
Terminal abdominal segments as shown in figure 67d. Genitalia as 
shown in figure 60. 
Female: As illustrated in figure 66. Smaller than Bucerophagus 
africanus in all measurements except width of metathorax (table 12). 
Resembles the male except that abdominal sternite II has 34-42 
total setae. Terminal abdominal tergite with 8 long and 2 short 
setae on posterior margin; abdominal sternite VIII with 18-22 long 
and 4 short setae on posterior margin (fig. 51). Anal fringe with 
44-54 setae (fig. 52). 
Material examined: 49 males and 66 females from fresh and dried 
material collected in the Oriental region; neotype male and specimens 
from the same series, 1 male and 4 females, from WEC 2275, SMNH. 
According to Eichler (1947), WEC 2275 was collected in Sumatra by 
E. Mjéberg; from the type host: 23 males and 29 females from 
