Cacomantis addendus Rothschild & Hartert, 1901

Wu, Meng Yue, Schodde, Richard & Rheindt, Frank E., 2022, Integrating voice and phenotype in a revision of the brush cuckoo Cacomantis variolosus (Aves: Cuculidae) complex, Zootaxa 5091 (1), pp. 69-106 : 100

4.6 Cacomantis addendus Rothschild & Hartert, 1901

Range: Solomon Islands, from Buka and Bougainville south to Makira ( San Cristobal).

Diagnosis: main song of one type or blended with a second ‘where’s the tea’ vocalization, elements of the main song long and flattened, resembling those of blandus from the Admiralty Islands , but still longer and slower paced ( Fig. 2 ); basic morph of Solomons morphotype (see 3.2.2.(5) above); body medium-sized and tail proportionally long: wing c. 113–123 mm, tail/wing ratio 1.09–1.15 ( Table 2 ); barred females with dorsa dully barred black on dark cinnamon, and ventral white heavily barred black and pervasively washed cinnamon; juveniles dark in tone and coarsely mottled and barred black on tawny-cinnamon, extending to very broad rufous barring in outer rectrices. Element length, slow song pace and chimeric character of the main song, where main song and ‘brain-fever’ call run into each other, are unique and render the Solomon population bioacoustically distinct. So does the pervasive rufous wash over the ventrum in barred-morph females and over dorsum and through outer rectrices in juveniles .

Except for Rothschild & Hartert (1901), C. addendus has, until now, been treated as a subspecies of variolosus by all reviewers since Hartert (1925).

Figures

FIGURE 2. The seven element shapes found in the Cacomantis variolosus complex. Taxon names given represent the following geographic song types (see Results): sepulcralis—Sundaland and Philippines, virescens—Sulawesi and Sula, aeruginosus—resident Moluccas, variolosus—Australasia, blandus—Admiralty Islands, addendus—Solomon Islands.