Centrorhynchus

Key to the Neotropical species of Centrorhynchus

1 - Proboscis armature without transitional hooks..................................................................................................................................................................................2

1’ - Proboscis armature with transitional hooks......................................................................................................................................................................................4

2 - Hooks true with anterior and posterior roots, 24 – 26 longitudinal rows of hooks, 27 – 28 hooks per rows; 16 – 17 + 0 + C. giganteus Travassos 1919

2 ’ - Hooks true with roots of different shape, 26 – 39 longitudinal rows of hooks................................................................................................................................3

3 - Proboscis armed with 26 longitudinal rows of hooks, 20 – 21 hooks per rows; 13 + 0 + 7 – 8 C. tumidulus (Rudolphi 1819)

3 ’ - Proboscis armed with 39 longitudinal rows of hooks, 17 hooks per rows; 5+ 0 + C. nicaraguensis Schmidh & Neiland 1966

4 - Hooks transitional with lateral alate processes, first transitional hook with 4 processes.................................................................................................................5

4’ - Hooks transitional without lateral alate processes............................................................................................................................................................................6

5 - Proboscis armed with 26 – 35 longitudinal rows and 22 – 27 hooks per row; 7 – 9 + 2+ 14-18 ............................................... C. kuntzi Schmidh & Neiland 1966

5’ - Proboscis armed with 32 longitudinal rows and 18 – 19 hooks per row; 8 – 9 + 4 + 6.............................................................................................. C. guira n. sp .

6 - Proboscis armature with up to 30 longitudinal rows of hooks...........................................................................................................................................................7

6’ - Proboscis armature with more than 30 longitudinal rows of hooks................................................................................................................................................8

7 - Proboscis armed with 20 – 22 hooks per rows; 8 + 4 + 10*........................................................................................................................... C. albidus Meyer 1932

7’ - Proboscis armed with 17 hooks per rows; 7 + 3 + 7**................................................................................................................... C. polymorphus Travassos 1925

8 - Proboscis with 32 – 35 longitudinal rows of hooks, 15 – 17 hooks per rows; 8 – 9 + 3 + 4 – 5 C. crotophagicola Schmidh & Neiland, 1966

8’ - Proboscis with 36 – 38 longitudinal rows of hooks, 17 – 18 hooks per rows; 9 + 3 + 5...................................................... C. microcephalus (Bravo Hollis 1947)

Key to species of the genus Centrorhynchus of the birds of Ukraine and adjacent territories

1а. Pear-shaped proboscis with extension in the middle part. ........................................................................... 2

1b. Proboscis other form...........................................................................................................................................3

2a. In anterior and posterior parts of proboscis same 30–36 longitudinal hook rows. To a level of attachment of the proboscis receptacle 12–13 hooks in row. ................................................................. C. spinosus

2b. In anterior part of proboscis 34 longitudinal hook rows, in posterior part — 40. To a level of attachment of proboscis receptacle 9–10 hooks. ................................................................................................. C. narcisae

3a. Anterior part of proboscis almost cylindrical without evident narrowing in level of attachment of proboscis receptacle..................................................................................................................................................4

3b. Anterior part of proboscis spherical or spade-shaped with evident narrowing in the level of attachment of proboscis receptacle........................................................................................................................................6

4а. Proboscis with 38–42 longitudinal hook rows of 26–27 hooks. ................................................... C. magnus

4b. Proboscis with 26–34 longitudinal hook rows of 19–21 hooks....................................................................5

5а. Proboscis with 26–30 longitudinal hook rows. Blade of the largest hook 42 length. ........... C. amphibius

5b. Proboscis with 30–34 longitudinal hook rows. Blade of the largest hook 50–65 length. ............................ ..................................................................................................................................................... C. globocaudatus

6а. Each longitudinal row with 19–20 hooks. Eggs 45–55 × 25. ......................................... C. polissiensis sp. n.

6b. Each longitudinal row with 13–18 hooks. Eggs 56–72 × 28–35...................................................................7

7а. First 7–10 hooks in each longitudinal row large with strong roots. ........................................... C. buteonis

7b. First 3–6 hooks in each longitudinal row large with strong roots. .............................................................. 8

8а. First 3–5 (usually 4) hooks in each longitudinal row large with strong roots. Eggs 56–65 × 28–30. ........ ................................................................................................................................................................ C. aluconis

8b. First 4–6 (usually 5) hooks in each longitudinal row large with strong roots. Eggs 68–72 × 33–35. ........ ............................................................................................................................................................ C. conspectus