Tyranniphyllodes pitangi, Hernandes & Valim & Mironov, 2007

Hernandes, Fábio A., Valim, Michel P. & Mironov, Sergey V., 2007, Two new genera and five new species of the feather mite subfamily Proctophyllodinae (Astigmata: Proctophyllodidae) from suboscine birds in Brazil, Journal of Natural History (J. Nat. Hist.) 41 (41 - 44), pp. 2653-2681 : 2659-2661

Tyranniphyllodes pitangi gen. n., sp. n.

( Figures 1–14 )

Type material

Male holotype, six male and seven female paratypes from the Great Kiskadee, Pitangus sulphuratus (Linnaeus, 1766) ( Passeriformes , Tyrannidae ), Rio de Janeiro, RJ, Brazil, August 2003, coll. M. P. Valim. Holotype and paratypes —DZSJRP; female and male paratypes —CAIOC and ZISP.

Description

Male holotype ( Figures 1–6 , 9–11 ) (range for six paratypes in parentheses). Length of idiosoma 253 (242–264), width 127 (110–132). Prodorsal shield split in two pieces, anterior portion narrow and less sclerotized, 49 in length× 22 in width (48–52×24–27), posterior portion as a transverse band bearing setae se and si on its anterior margin, 14 (12–14) in length and 42 (35–46) in width. In two paratypes there is a narrow connection between these two pieces ( Figure 9 ). Posterior margin of prodorsal shield convex, and anterior one concave. Scapular setae se 92 in length (79–95) and separated by 30 (29–34); si separated by 20 (19– 23). Setae c1 on anterior angles of hysteronotal shield; setae c2 set ventrally on striated tegument; setae c3 needle-shaped, 18 in length and 3 in width (19–20×2–3); setae cp set off humeral shield. Distance between prodorsal and hysteronotal shields 30 (24–34). Hysteronotal shield: anterior margin concave, 160 (158–169) in length and 68 (67–73) in width; surface without lacunae or pale sclerotized areas ( Figure 1 ). Opisthosomal lobes as short blunt-angular extensions, margin of opisthosoma between setae h3 as a shallow concavity, bearing a pair of short terminal tongue-shaped lamellae, 30 in length (24–34). Supranal concavity well expressed, long. Setae h3 separated by 35 (34–38). Length of setae: h3 109 (95–114), h2 177 (171–185), ps1 4 (4–5), ps2 27 (22–27), ps3 5 (5). Distance between dorsal setae: si–c1 46 (41–49), c1–c2 27 (22–33), c1–d1 27 (27–30), d1–e1 71 (67– 76), e1–h1 49 (46–54), h1–f2 44 (41–46).

Epimerites I fused as a narrow U. Rudimentary sclerites rEpIIa absent. Trochanters III flanked by narrow sclerotized band connecting bases of epimerites III and IIIa. Epimerites IVa present. Sheath of aedeagus reaching the level of setae g and bifurcated apically ( Figure 11 ), 38 in length (41–44); genital arch 23 (23–27) in length and 38 in width (38– 52). Distance between ventral setae: 3a–4a 19 (18–20), 4a–g 41 (41–44), g–ps3 11 (8–12), ps3–ps3 19 (19–22). Opisthogastral shield H-shaped, its transverse branch with long median extension directed anteriorly and fused with base of genital sheath; setae g on transverse branch; setae ps3 set off of this shield, situated on anal field ( Figures 2 , 11 ). Anal suckers 10 (8–10) in diameter, distance between discs 11 (11–14), corolla with poorly expressed teeth.

Tarsus IV 34 (31–35) in length, modified seta d approximately at mid-level of this segment ( Figure 6 ).

Female ( Figures 7, 8 , 12–14 ) (measurements of seven paratypes). Length of idiosoma 374– 407, width 154–165. Prodorsal shield entire and narrowed anteriorly: 82–92 in length and 68–82 in width, without lacunae or pale sclerotized areas. Posterior margin of prodorsal shield convex. Setae se 101–120 in length and separated by 50–58; pair si separated by 35– 44. Setae c 1 in anterior angles of anterior hysteronotal shield; setae c2 set ventrally on striated tegument; setae c3 spiculiform, 19–22 in length and 2–3 in width; setae cp set off humeral shield. Distance between prodorsal and hysteronotal shields 19–30. Anterior hysteronotal shield: 190–218 in length and 84–95 in width, anterior margin slightly concave, surface without lacunae but with a pair of pale sclerotized areas near posterolateral margin of that shield ( Figure 7 ). Lobar region: 71–82 in length and 73–82 in width. Terminal cleft as a narrow inverted U, 46–54 in length. Supranal concavity absent. Setae h2 182–209 in length, 3–4 in width; and setae h3 46–54 in length and separated by 33–41. Setae h1 inserted on striated tegument between the anterior hysteronotal shield and lobar region. Setae h1 and f 2 in trapezoidal arrangement. Distance between dorsal setae: si–c1 46–57, c1–c2 30–38, c1–d1 42–50, d1–e1 94–101, e1– e2 19–27, e1–h1 61–71, e2–h1 52–60, h1–f2 24–30, f2–h2 5–14.

Epimerites I as a narrow U with slightly divergent anterior ends. Trochanters III flanked by narrow sclerotized band connecting bases of epimerites III and IIIa. Epimerites IVa present. Epigynium horseshoe-shaped, 54–57 in length, 60–63 in width; epigynium tips reaching the level of setae g and 3b. Setae ps2 and ps3 short and setiform, setae ps2 at level of posterior end of anal opening. Distance between ventral setae: 1a–3a 44–52, 3a–g 33–35, 4a–ps3 75–82, g–4a 65–76, ps2–ps3 19–24, ps2–ps2 46–49, ps3–ps3 19–22. Copulatory opening ventral, on soft integument, near to posterior end of anal opening. Spermatheca and spermaducts as in Figure 12 . Legs I and II as in male; genua III and IV with dorsal crest ( Figures 13, 14 ); legs IV extending by ambulacral disc to the level of setae f2 ( Figures 7, 8 ).

Etymology

The specific epithet derives from the generic name of the host and is a noun in the genitive case.

Figures

Figures 1, 2. Tyranniphyllodes pitangi gen. n., sp. n., male: dorsal (1) and ventral (2) views. os, opisthogastral shield.

Figures 3–6. Tyranniphyllodes pitangi gen. n., sp. n., male legs I–IV, dorsal views.

Figures 7, 8. Tyranniphyllodes pitangi gen. n., sp. n., female: dorsal (7) and ventral (8) views. co, copulatory opening.

Figures 9–14. Tyranniphyllodes pitangi gen. n., sp. n. (9–11) Male: (9) variation on shape of prodorsal plate in paratype; (10) lobar region in dorsal view; (11) genital region. (12–14) Female: (12) spermatheca; (13, 14) dorsal crests on genua III and IV, respectively. a, aedeagus; ms, median extension; os, opisthogastral shield; pd, primary duct; s.a., sheath of aedeagus; sd, secondary ducts.