R. L. Edards.
Notes on Some of Osborn's Mallophaga Types and the Description of a New Genus, Rotundiceps (Philopteridae).
Psyche 59(1):26-30, 1952.

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NOTES ON SOME OF OSBORN'S MALLOPHAGA
TYPES AND THE DESCRIPTION OF A NEW GENUS, ROTUNDICEPS (PHILOPTERIDAE)
BY ROBERT L. EDWARDS
Biological Laboratories, Brandeis University There is a small series of Herbert Osborn's Mallophaga types, comprising nine species, in the Museum of Com- parative Zoology. These were described as new in his 1896 paper, Insects Affectin,g Domestic animal^.^ I should like to express my indebtedness to the late Mr. James E. Peters, Curator of Birds, Museum of Comparative Zoology, who permitted me on numerous occasions to examine bird skins for lice to help determine the validity of host designations, and to Dr. Joseph Bequaert, Curator of Insects, for the loan of the type material. Mr. Louis Lipovsky, Department of Entomology, University of Kansas, supplied me with additional material. Dr. K. C. Emerson has given me many valuable suggestions concerning the material. A grant- in-aid from the Society of the Sigma Xi made it possible for me to complete this study.
The Osborn types are mounted on roughly cut thick glass slides, and many of them have cover glasses of the same material. The insects are in relatively good condi- tion, although only partially cleared, and are undoubtedly those referred to in the descriptions. The type catalog numbers are contained in parentheses with the initials (MCZ).
Penenirmus tyrannus (Osborn)
Nirmus tyrannus Osborn, 1896, p. 228.
One slide with two females in fairly good condition (MCZ 27341).
Published with a grant from the Museum of Comparative Zoology at Harvard College.
"896. U.S.D.A. Bull., No. 5 (N.S.).
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Psiffte 59:26-10 (1952). hup Wpsycht enlclub orgtS9159-026 html



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19521 Edwards - Mallophaga 27
Type host : Tyrunnus t yrannus (Linn. ) , the Eastern Kingbird.
Philopterus fusco-ventrails (Osborn)
Docophorus fusco-ventralis Osborn, 1896, pp. 221-222. Two slides containing seven adults and three immatures in good condition (MCZ 27342).
Type host : Contopus virens (Linn.) , the Eastern Wood Pewee.
Philopterus osborni, nom. nov.
Docophorus corvi Osborn, 1896, pp. 220-221. Three slides containing five adults and three immatures in good condition although uncleared. Since Clay and Hopkins3 have designated Philopterus corvi as the correct name for Pediculus corvi Linn. from Corvus c. corax Linn., Osborn's name must fall as a homonym (MCZ 27344). Type host: Corvus brachyrhynchus Brehm, the Crow. Quadraceps boephilus (Kellogg)
Nirmus boephilus Kellogg, 1896, New Mallophaga I, pp. 107- 109.
Nirmus parallels Osborn, 1896, pp. 229-230. Three females on one slide, in goo,d condition (MCZ 27336).
Type host: Charadrius vociferus Linn., the Killdeer. Picicola rnwrqinatulus (Harrison)
Nirrnus marginatus Osborn, 1896, p. 228. Degeeriella rnarginatulus Harrison 1916, Parasitology 9, p. 117. Nomen novum.
One slide with three adult females in good condition (MCZ 27339).
Type host : Dryocopzbs pileatus (Linn.) , the Pileated Woodpecker.
1950. The Early Literature on Mallophaga. Bull. Brit. Mus. (Nat. Hist.), Ent. Ser., l(3) : 231-233, figs. 6-9.



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28 Psyche
[March
Picicola orpheus (Osborn)
Nirmus orpheus Osborn 1896, pp. 227-228. One slide containing two males, both of which are ap- parently terminating their last instar or are very recently adult. Dr. K. C. Emerson believes that they are possibly members of the genus Lagopoecm, while I believe they are more closely related to Picicda (as does Miss T. Clay, per- sonal communication). This species is particularly difficult to determine since Osborn's host reference, Galeoscoptes carolinensis, presently Dumatella carolinensis (Linn.) is apparently incorrect. The genitalia certainly show affinities with PicicoZa. This species must remain an enigma until additional material is obtained. (MCZ 27340). Type host: Yet to be determined, probably a woodpecker. Bruelia abruptus ( Osborn)
Nirqnus abruptus Osborn, 1896, p. 229.
One adult female and an immature in good condition (MCZ 27338).
Type host: Unknown. The reference to Colinus virgini- anus (Linn.) is almost certainly incorrect. The louse has, in all probability, a passeriform host.
Rot undiceps gen. nov.
(Plate 3)
The genus is described for Osborn's Nirmus cordatus. It is closely related to Lunaceps, and is another example of ecological adaptation, Lunaceps frequenting the wings and back of the host while Rotundiceps is usually found about the head.
Description: Head broadly rounded, slightly broader than long, only slightly buttressed marginally. Relatively strongly buttressed around the bases of the antennae and mandibular articulations. Signature only barely repre- EXPLANATION OF PLATE 3
Fig. 1. Dorso-ventral view of male Rotundiceps cordatus Osborn. Fig. 2. Male genitalia.




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30 Psyche
[March
sented by small irregular sclerotized area. Posterior margin of head armed with short,
stout setae. Rounded, lightly
sclerotized gular area. Posterior margin of pterothorax with complete although irregular row of long setae. Ab- domen slightly longer than broad, lightly sclerotized with- out obvious delineation of tergites and sternites. Spiracles six, on morphological segments 3-8. Mid-dorsal and mid- ventral double rows of setae on proximal seven segments. All spiracles except first and last with long seta posterior to each on border of tergite. In male, the first six tergites narrowed medially, with seventh separated into two parts, the eighth complete. Male genital opening dorso-terminal. Genotype : Nirmus cordatus Osborn.
Type host: Limosa fedoa (Linn.), the Marbled Godwit. Although Osborn lists L. haemastica as the host in his text, I have failed to find any specimens in many collections from this bird. Collections from L. fedoa however contain abundant specimens of this louse. The type slide (MCZ 27337) label lists the host as Limosa hudsonica. Rhynonirmus infuseatus (Osborn)
Lipeurus infuseatus Osborn, 1896, pp. 234-235. The type material consists of three slides as follows : No. 340 with an adult female Lunaceps; No. 314 with an adult female Rhynonks; and No. 334 with two adult males, Rhgnonirmus, from Bartramia longicauda (Bechstein) . The male specimen centrally located in slide No. 334 is hereby designated as the lectotype (MCZ 27343). Type host: Bartraw'a longicauda, the Upland Plover. The louse has been taken commonly from his host. Con- trarywise, I failed to locate it in several collections from Philohela minor (Grnelin) .




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