Amerodectes, Valim and Hernandes, 2010

Mironov, Sergey & González-Acuña, Daniel, 2011, New feather mites of the subfamily Pterodectinae (Acariformes: Proctophyllodidae) from passerines (Aves: Passeriformes) from Chile and Cuba, Zootaxa 3057, pp. 1-48 : 5-6

Key to Amerodectes species

(Males and females)

1. In both sexes, setae cG of genua I, II strongly enlarged, blade-like. In males, hysteronotal shield with wide median groove.. 2

- In both sexes, setae cG of genua I, II filiform or spiculiform. In males, hysteronotal shield without a median groove....... 3

2. In both sexes, setae cG of genu I not longer than 45 and subequal to segment length. In males, median groove of hysteronotal shield extending to its anterior margin; epimerites IVa with long, narrow and acute posterior projections................................................................................................. A. bilineatus ( Berla, 1958)

- In both sexes, setae cG of genu I about 65 long, almost twice as long as segment. In males, median groove of hysteronotal shield extending to level of humeral shields and definitely not extending to its anterior margin; epimerites IVa without posterior projections................................................................... A. storkani (Č erný, 1974)

3. In males, setae h3 equal to or longer than distance between setae se, whip-like, never widened in medial part........... 4

- In males, setae h3 shorter than distance between setae se, narrowly lanceolate or spiculiform, rarely lanceolate with filiform apex (in A. gracilis )................................................................................... 10

4. In both sexes, anterior margin of hysteronotal shield deeply concave, this concavity extending beyond level of setae c1. In males, aedeagus not extending to anterior end of anal opening; prodorsal shield with narrow incisions posterior to bases of setae se. In females, prodorsal shield with angular incisions around bases of setae se ........... A. pitangi ( Mironov, 2008)

- In both sexes, anterior margin of hysteronotal shield straight or slightly concave, but this concavity not extending to level of setae c1. In males, aedeagus extending at least to anterior end of anal opening, prodorsal shield without incisions posterior to setae se. In females, lateral margins of prodorsal shield without incisions around setae se ............................ 5

5. In males, humeral shields developed dorsally, represented by narrow longitudinal sclerites. In females, humeral shields developed as in corresponding males or represented by ventral rudimentary sclerites of irregular form (in A. maculatus )....... 6

- In both sexes, humeral shields absent or represented by rudimentary sclerites on ventral side of hysterosoma............ 9

6. In both sexes, humeral shields (or their rudiments in female) incorporate bases of humeral setae cp. In males, humeral shields fused with bases of epimerites III....................................................................... 7

- In both sexes, bases of humeral setae cp not incorporated into humeral shields. In males, humeral shields free from epimerites III................................................................................................ 8

7. In males, a pair of small adanal shields of irregular form present anterior to anal suckers, rudimentary sclerites rEpIIa present at level of posterior tips of epimerites IIa. In females, humeral shields well developed dorsally and their ventral parts fused with bases of epimerites III, hysteronotal shield without circular lacunae, primary spermaduct extremely long and mostly wound up like a loose skein...................................................... A. thraupicola (Č erný, 1974)

- In males, adanal shields absent, rudimentary sclerites rEpIIa absent. In females, humeral shields represented by rudimentary ventral sclerite separated from bases of epimerites III, hysteronotal shield with numerous circular lacunae, primary spermaduct of moderate length, not wound up.................................................... A. maculatus (Č erný, 1974)

8. In males, aedeagus extending to anterior end of terminal cleft. In females, setae h1 situated immediately near anterior margin of lobar shield, setae ps2 situated far postero-lateral from corresponding ps3 and approximately at level of posterior end of anal opening, distance ps3:ps2 1.3–1.5 times longer than distance between setae ps3 ................ A. sialiarum ( Stoll, 1893)

- In males, aedeagus extending only to anterior margin of anal suckers. In females, setae h1 situated noticeably distant from anterior margin of lobar shield, slightly posterior to level of supranal concavity, setae ps2 close to corresponding ps3 and situated approximately at midlevel of anal opening, distance between these pairs of setae less than distance between setae ps3 ................................................................................ A. molothrus ( Mironov, 2008)

9. In males, aedeagus extending to anterior end of terminal cleft, minute rudiments of humeral shield present anterior to bases of setae cp ( Fig. 4 B). In females, lateral parts of lobar shield connected by narrow transverse band bearing supranal concavity, rudiments of humeral shield minute as in male ( Figs. 5 A, B)....................................... A. sicalis sp. n.

- In males, aedeagus extending to midlevel of anal suckers, any remnants of humeral shields absent ( Fig. 1 B). In females, lobar shield entire, without area of soft tegument posterior to supranal concavity; rudimentary humeral shields with indented lateral margins present and joined to bases of setae cp ( Figs. 2 A, B)..................................... A. phrygilus sp. n.

10. In males, genital arch with aedeagus running forwards and then bending backwards at level of trochanters III, tip of aedeagus extending to midlevel of terminal cleft, setae h3 lanceolate with filiform apex. In female, anterior part of lobar region with narrow neck almost half as wide as the greatest width of this region (at level of setae h2)........ A. gracilis ( Trouessart, 1885) - In males, genital arch with aedeagus running backwards immediately from its apex, which is approximately at midlevel between trochanters III and IV, tip of aedeagus not extending to terminal cleft, setae h3 lanceolate or spiculiform, without filiform apex. In female, anterior part of lobar region without strong narrowing..................................... 11

11. In both sexes, setae f2 absent. In males, setae ps3 far postero-lateral to level of anal suckers and situated near bases of setae ps2, setae h1 situated close to lateral margins of opisthosoma ( Figs. 11 A, B)....................... A. caribaeus sp. n.

- In both sexes, setae f2 present. In males, setae ps3 situated at level of anal suckers or slightly posterior, but never close to bases of setae ps2, setae h1 equidistant from midline and corresponding lateral margin of opisthosoma.................... 12

12. In both sexes, prodorsal shield with small incisions posterior to bases of setae se. In males, length of setae h3 less than half the distance between their bases....................................................... A. troglodytis (Č erný, 1974)

- In both sexes, prodorsal shield with lateral margins entire. In males, length of setae h3 longer than half the distance between their bases......................................................................................... 13

13. In both sexes, humeral shields present, represented by narrow dorsal or lateral sclerites1........................... 14

- In both sexes, humeral shields absent.................................................................... 19

14. In females, lobar shield entire (not split longitudinally); supranal concavity well developed, circular with well sclerotized border............................................................................................... 15

- In females, lobar shield split longitudinally, supranal concavity absent......................................... 17

15. In males, fused posterior ends of epimerites I not connected with epimerites II, epimerites IVa without long and acute posterior projection. In females, setae h1 and f2 arranged in transverse row......................... A. nordestensis ( Berla, 1958)

- In males, fused posterior ends of epimerites I connected with middle parts of epimerites II by narrow transverse bands, epimerites IVa without posterior acute projection. In females, setae h1 and f2 arranged in low trapezium.............. 16

16. In males, setae h3 (35–40 long) shorter than distance between bases of setae h2, bases of trochanters IV flanked by narrow sclerotized band, aedeagus extending to midlevel of anal suckers. In females, setae h2 spindle-like without filiform apex, supranal concavity flanked laterally by 2-4 small circular lacunae on each side....................... A. plumbeus sp. n.

- In males, setae h3 (48–54 long) equal to or slightly longer than distance between setae h2, bases of trochanters IV not flanked by sclerotized band, aedeagus extending to anterior margin of anal suckers. In females, setae h2 spindle-like with filiform apex, supranal concavity flanked laterally by one large circular lacuna on each side.............. A. turdinus ( Berla, 1959)

17. In males, epimerites IVa well developed and extending to tips of genital arch, rudimentary sclerites rEpIIa present. In females, lobar shield separated medially by relatively wide band (about 15) of soft cuticle.............................................................................................. A. atyeoi ( OConnor, Foufopoulos and Lipton, 2005)

- In males, epimerites IVa not developed, rudimentary sclerites rEpIIa absent. In females, lobar shield separated medially by narrow groove, lateral parts almost touching.................................................................. 18

18. In both sexes, prodorsal and hysteronotal shields entirely covered with numerous large circular lacunae up to 8 in diameter. In males, posterior end of fused epimerites I acute...................................... A. paroariae ( Mironov, 2008)

- In both sexes, lacunae on dorsal shield minute (less than 3 in diameter) and sparsely disposed; anterior areas of prodorsal and hysteronotal shields usually without lacunae. In males, posterior end of fused epimerites I with pair of acute lateral extensions.............................................................................. A. tangarae ( Mironov, 2008)

19. In males, aedeagus extending to anterior end of terminal cleft, setae h3 shorter than distance between their bases. In females, lobar shield split completely or partly into two pieces by wide median band (about 15) of soft tegument............... 20

- In males, aedeagus scarcely extending to anterior margin of anal suckers, setae h3 longer than distance between their bases. In females, lobar shield entire, or split into two pieces by narrow median groove.................................... 21

20. In males, entire surface of prodorsal shield with small circular lacunae, setae h1 anterior to supranal concavity, epimerites I usually connected with epimerites II by narrow transverse bands or their fused part with acute lateral extensions ( Figs. 9 A, B). In females, lateral parts of lobar shield remain connected at anterior margin ( Fig. 10 A)................ A. contopus sp. n.

- In males, prodorsal shield without lacunae, or small circular lacunae present only in anterior part, setae h1 at level of supranal concavity, epimerites I not connected with epimerites II, their fused part without lateral extensions ( Figs. 6 A, B). In females, lobar shield completely split along midline by wide band of soft tegument ( Fig. 7 A).................. A. wilsoniae sp. n.

21. In males, setae h3 narrowly lanceolate or thick spiculiform, setae h1 closer to level of setae f2 than to level of setae e2, plate connecting posterior tips of epimerites I usually tridentate. In females, lobar shield entire, without median groove......................................................................................... A. geothlypis ( Berla, 1973)

- In males setae h3 gradually attenuate from base to nearly filiform apex, setae h1 approximately equidistant from levels of setae f2 and e2, plate connecting tips of epimerites I usually bidentate. In females, lobar shield with narrow median groove........................................................................................ A. havliki (Č erný, 1974)

Figures

FIGURE 1. Amerodectes phrygilus sp. n., male. A — dorsal view, B — ventral view. hn—hysteronotal shield, ov—opisthoventral shield, pr—prodorsal shield, sc—scapular shield, su—supranal concavity.

FIGURE 2. Amerodectes phrygilus sp. n., female. A — dorsal view, B — ventral view. ae—apodemes of oviporus, ah—anterior hysteronotal shield, co—copulatory opening, lb—lobar shield, pr—prodorsal shield, rh—rudimentary humeral shield, scscapular shield, su—supranal concavity, ta—terminal appendage, tl—translobar apodeme.

FIGURE 4. Amerodectes sicalis sp. n., male. A — dorsal view, B — ventral view. rh—rudimentary humeral shield.

FIGURE 5. Amerodectes sicalis sp. n., female. A — dorsal view, B — ventral view. rh—rudimentary humeral shield.

FIGURE 6. Amerodectes wilsoniae sp. n., male. A — dorsal view, B — ventral view.

FIGURE 7. Amerodectes wilsoniae sp. n., female. A — dorsal view, B — ventral view.

FIGURE 9. Amerodectes contopus sp. n., male. A — dorsal view, B — ventral view.

FIGURE 10. Amerodectes contopus sp. n., female. A — dorsal view, B — ventral view.

FIGURE 11. Amerodectes caribaeus sp. n., male. A — dorsal view, B — ventral view.