NO. 3558 MALLOPHAGA—ELBEL 35 
Chapinia muesebecki is named for Mr. C. F. W. Muesebeck, Division 
of Insects, U.S. National Museum, in appreciation for the loan of 
Mallophaga from that museum. 
Chapinia hirta (Rudow) 
Fiaures 19, 22, 47, 48 
Colpocephalum hirtum Rudow, 1866, p. 474. [Type host: Buceros ruficollis 
=Rhyticeros plicatus ruficollis (Vieillot, 1816).] 
Colpocephalum hirtum Rudow, 1869, p. 399. 
Chapinia hirta (Rudow).—Hopkins and Clay, 1952, p. 67. 
Hopkins and Clay state that the generic position of hirtum is doubt- 
ful. Examination of specimens from the type host shows them to be 
Chapinia. Therefore, the male, BM 13376, is designated hereby as 
neotype of C. hirta. The slide has been so labeled. 
Both sexes are smaller than corresponding sexes of Chapinia traylori 
in all measurements except length of head (tables 1, 2). 
Male: Abdominal sternite II with 60-64 total setae. Terminal 
abdominal segments as shown in figure 22. Genitalia as shown in 
figure 19. 
Female: Resembles the male except that terminal abdominal seg- 
ments have a tergite with 12 long and 10 short setae on posterior 
margin; abdominal sternite VIII has 18-22 setae on posterior margin 
(fig. 48). Anal fringe with 46-48 setae (fig. 47). 
Discussion: Chapinia hirta resembles most closely C. muesebecki. 
Also, C. hirta superficially resembles C. lydae. Abdominal sternite II 
in these three species has approximately the same number of total 
setae in females as in males, and three median rows of setae. Male 
terminal abdominal segments are longer in C. hirta than in C. muese- 
becki, and the partial division between abdominal sternites VII and 
VIII is more pronounced in C. hirta than in C. muesebecki. The 
sclerite of male genital sac is approximately as wide as long in C. harta 
but nearly twice as long as wide in C. muesebecki, and this sclerite is 
approximately one-third as long in C. hirta as in C. muesebecki. The 
male genitalia in C. hirta are narrower than in C. lydae; the parameres, 
straight-sided in C. hirta, are enlarged anteriorly in C. lydae; the 
endomeres apparently are absent in C. hirta, but have an inner plate 
and paired outer rims in C. lydae. The female terminal abdominal 
tergite has on the posterior margin in C. hirta 5 long setae on each 
side of the midline, these 10 setae being evenly spaced; however, in 
C lydae 3 or 4 long setae on each side of the midline have the two 
median setae as widely spaced as four times the distance between 
each of the 3 or 4 long setae. 
Material examined: 3 males and 2 females from fresh and dried 
material collected in the Oriental and Australasian regions; neotype 
male, BM 13376, and female, BM 13375, from New Guinea, BMNH; 
291-522 674 
