Bulletin - United States National Museum - si-pddr - Smithsonian ...
Bulletin - United States National Museum - si-pddr - Smithsonian ... Bulletin - United States National Museum - si-pddr - Smithsonian ...
238 BULrLETIN 133, UNITED STATES NATIONAL MUSEUM LEPIDOCOLAPTES ANGUSTIROSTRIS CERTHIOLUS (Todd) Picolaptes hivittatus certhiolus Todd, Proc. Biol. Soc. Washington, vol. 26, Aug. 8, 1913, p. 173. (Curiche Rio Grande, eastern Bolivia.) Four specimens from west of Puerto Pinasco, Paraguay, a female shot at Kilometer 25 on September 1, and three from Kilometer 80 (two males secured September 9 and 13, and a female taken September 17), seem best referred to the present form, described from eastern Bolivia. L. a. certhiolus differs distinctly from L. a. angustirostris in the fainter streaking on the ventral surface that in some specimens becomes nearly obsolete. The four skins from near Puerto Pinasco agree closely with the type of certhiolus (that through the kindness of W. E. Clyde Todd, has been compared directly with them) in color and amount of streaking on the breast and abdomen. The Paraguayan specimens are slightly variable in this respect, some representing a closer approach to typical angustirostris than others. They are slightly duller above than the type of certhiolus, and are also a trifle smaller (in males, wing, 91.6-95.2 mm.). In Mr. Todd's type-specimen the wing measures 100.6 mm. Examination of a small series of these wood hewers shows con- clusively that the bird with unstreaked breast, known as hivittatus, intergrades through certhiolus with the heavily marked group that has been maintained as angustirostr'is. In fact, intergradation seems so complete as to render division into forms difficult, since, when the vast range occupied is considered, comparatively few localities have been represented in the series seen. Since angustirostris of Vieillot is the older name, the forms of the species as at present known will stand as follows : ) LEPIDOCOLAPTES A. ANGUSTIROSTKIS (Vieillot). Dendrocopus angustirostris Vieillot, Nouv. Diet. Hist. Nat., vol. 26, 1818, p. 116. (Paraguay.) Lower surface heavily streaked; streaks of head terminated on nape. Eastern (?) and southern Paraguay, northern Argentina (Chaco, Tucuman), probably south to the limits of the Chaco in the Province of Santa Fe. LEPIDOCOLAPTES A. PRAEDATUS (Cherrie). Picolaptes angustirostris praedatus Chekrie, Bull. Amer. Mus. Nat. Hist., vol. 25, May 20, 1916, p. 187. (Concepcion del Uruguay, Entre Rios, Argentina. Larger than angustirostris with longer bill, and with the streaks on the head and nape extended onto the lower back. Central Argentina (Entre Rios, northern, Buenos Aires, and central Pampa) and Uruguay (Rio Negro).
BIRDS OF AEGENTINA, PARAGUAY, URUGUAY, AND CHILE 239 XEPIDOCOLAPTES A. CERTHIOLUS (Todd). Picolaptcs bivittatus certhiohis Todd, Proc. Biol. Soc. Washington, vol. 26, August S, 1913, p. 173. (Curiche Rio Grande, eastern Bolivia.) Less heavily streaked below than angustirostris, in some with streaks nearly obsolete, more riifescent. Eastern Bolivia and the Chaco of Paraguay for an indeterminate distance southward. LEPIDOCOLAPTES A. BIVITTATUS (Lichtenstein) Dendrocolaptes hivittatus Lichtenstein, Abh. Berlin Akad., 1820-21 (1822), p. 158, pi. 2, fig. 2. (Sao Paulo, Brazil.) Lower surface uniform or nearly so, lighter, more rufescent above. Southern Brazil (Sao Paulo to Matto Grosso?). Four skins in the Carnegie Museum from the Province of Lara, Bolivia, have the streaks on the undersurface nearly obsolete and are somewhat brighter above than the average oi L. a. certhioTus as here taken. These may represent intermediates toward hivittatus or may be that form, but with available material I am at a loss where to place them. It is possible that hivittatus ranges across Matto Grosso into the lower regions of north central Bolivia, while certhiolus may be restricted to the Chaco region of eastern Bolivia, and Paraguay west of the Rio Paraguay. LEPIDOCOLAPTES A. CORONTUS (Lesson). Picolaptes coronatus Lesson, Traitfi Orn., 1831, p. 314. ("Br§sil.") Similar to L. a. hivittatus, but undersurface, save throat slightly duller than a shade between cinnamon buff and clay color. Eastern Brazil (Bahia, Piauhy, Ceara.) Six skins of this form that I have examined in the Field Museum come from Jua and Quixada in Ceara. Doctor Hellmayr informs me that coronatus of Lesson, based on Plate 90 in the first volume of Spix's Avium Brasiliam (vol. 1), is the same as the form that he separated under the subspecific name of hahiae}^ L. a. certhiolus, like other forms of this species, inhabited forested regions, often where the growth was dense and almost impenetrable, but was not averse to working out through the more open palm groves, or palmares, that covered swamp regions, or open groves of hardwoods where brush fires had prevented undergrowth. Like others of its family, it climbed steadily in long hitches, woodpecker fashion, always traveling up the tree trunks or limbs on which it rested. One observed posed before its mate braced firmly with its >• Picolaptes Uvittatvs bahiae Hellmayr, Verb. Zool.-bot. Ges. Wien, 1903, p. 219. (Bahia.) .
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BIRDS OF AEGENTINA, PARAGUAY, URUGUAY, AND CHILE 239<br />
XEPIDOCOLAPTES A. CERTHIOLUS (Todd).<br />
Picolaptcs bivittatus certhiohis Todd, Proc. Biol. Soc. Washington, vol.<br />
26, August S, 1913, p. 173. (Curiche Rio Grande, eastern Bolivia.)<br />
Less heavily streaked below than angustirostris, in some with<br />
streaks nearly obsolete, more riifescent.<br />
Eastern Bolivia and the Chaco of Paraguay for an indeterminate<br />
distance southward.<br />
LEPIDOCOLAPTES A. BIVITTATUS (Lichtenstein)<br />
Dendrocolaptes hivittatus Lichtenstein, Abh. Berlin Akad., 1820-21<br />
(1822), p. 158, pi. 2, fig. 2. (Sao Paulo, Brazil.)<br />
Lower surface uniform or nearly so, lighter, more rufescent above.<br />
Southern Brazil (Sao Paulo to Matto Grosso?).<br />
Four skins in the Carnegie <strong>Museum</strong> from the Province of Lara,<br />
Bolivia, have the streaks on the undersurface nearly obsolete and<br />
are somewhat brighter above than the average oi L. a. certhioTus as<br />
here taken. These may represent intermediates toward hivittatus<br />
or may be that form, but with available material I am at a loss<br />
where to place them. It is pos<strong>si</strong>ble that hivittatus ranges across<br />
Matto Grosso into the lower regions of north central Bolivia, while<br />
certhiolus may be restricted to the Chaco region of eastern Bolivia,<br />
and Paraguay west of the Rio Paraguay.<br />
LEPIDOCOLAPTES A. CORONTUS (Lesson).<br />
Picolaptes coronatus Lesson, Traitfi Orn., 1831, p. 314. ("Br§<strong>si</strong>l.")<br />
Similar to L. a. hivittatus, but undersurface, save throat slightly<br />
duller than a shade between cinnamon buff and clay color.<br />
Eastern Brazil (Bahia, Piauhy, Ceara.)<br />
Six skins of this form that I have examined in the Field <strong>Museum</strong><br />
come from Jua and Quixada in Ceara. Doctor Hellmayr informs<br />
me that coronatus of Lesson, based on Plate 90 in the first volume<br />
of Spix's Avium Bra<strong>si</strong>liam (vol. 1), is the same as the form that<br />
he separated under the subspecific name of hahiae}^<br />
L. a. certhiolus, like other forms of this species, inhabited forested<br />
regions, often where the growth was dense and almost impenetrable,<br />
but was not averse to working out through the more open palm<br />
groves, or palmares, that covered swamp regions, or open groves<br />
of hardwoods where brush fires had prevented undergrowth. Like<br />
others of its family, it climbed steadily in long hitches, woodpecker<br />
fashion, always traveling up the tree trunks or limbs on which it<br />
rested. One observed posed before its mate braced firmly with its<br />
>• Picolaptes Uvittatvs bahiae Hellmayr, Verb. Zool.-bot. Ges. Wien, 1903, p. 219.<br />
(Bahia.)<br />
.