Temnalges hoazin, Hernandes, Fabio A. & Mironov, Sergey V., 2015

Hernandes, Fabio A. & Mironov, Sergey V., 2015, The feather mites of the hoatzin Opisthocomus hoazin (Müller) (Aves: Opisthocomiformes), with the description of two new genera and six new species (Acari: Analgoidea, Pterolichoidea), Zootaxa 4034 (3), pp. 401-444 : 416-418

Temnalges hoazin sp. nov.

( Figs. 11–13 )

Type material. Male holotype (DZUNESP-RC #3126), 1 male and 11 female paratypes from Opisthocomus hoazin (Müller, 1776) (Opisthocomiformes: Opisthocomidae ), BRAZIL, Pará State, Fazenda Fartura, 09°40'S / 50°23'W, Santana do Araguaia, 0 8 September 2013, D.V. Boas-Filho coll. (#1112); other paratypes: 2 females, same data (#1110), 4 females, same data (#1111).

Depository. Holotype and 14 female paratypes at DZUNESP-RC; 1 male and 3 female paratypes at ZISP.

Description. MALE (holotype). ( Figs. 11 , 13 A–F). Length of idiosoma 214, width 136. Prodorsal shield: length 70, width at posterior margin 40; posterior margin rounded; longitudinal crests divergent posteriorly extending to level of setae si. Setae vi absent. Scapular setae si, se situated off prodorsal shield, si situated slightly anterior to se. Setae se separated by 60. Length of hysterosoma 139. Hysteronotal shield: length from anterior margin to level of setae h3 131, width at anterior margin 65; anterior margin rounded; lateral margins slightly concave at level of trochanters III. Setae d1 absent, setae e1 equidistant from hysteronotal gland openings gl and setae e2. Supranal concavity distinct. Opisthosomal lobes poorly developed, body terminus almost rounded ( Fig. 11 A). Distances between idiosomal setae: d2: d2 57, e2: e2 46, d2: e2 53, h3: h3 32, ps1: ps1 16.

Epimerites I free with diverging tips, without sclerotized areas, shortest distance between arms 6. Epimerites II almost touching epimerites III. Coxal fields I–IV open. Epimerites IV with roughly triangular sclerotized areas close to trochanters IV, bearing setae 4a. Genital apparatus situated at anterior level of trochanters III, 14 long and 15 wide at base; aedeagus minute ( Fig.13 F). Paragenital and adanal apodemes absent. Setae 4b anterior to level of genital apparatus, setae g slightly posterior to this level. Diameter of anal suckers 11. Distance between ventral setae: 4b: 4b 24, 4b: g 23, g: ps3 42.

Tarsi I, II with well-developed apicodorsal claw. Tarsus II with small and acute ventral spine. Tibiae I and II with a pair of well-developed acute ventral spines ( Fig. 13 A,B). Tibia III with strongly reduced paraxial spur. Length of tarsi: I 31, II 35, III 58, IV 9 ( Fig. 13 C–E). Setae d, e of tarsus IV barrel-shaped with cap, situated apically ( Fig. 13 D, E). Length of solenidia: σ 1 I 56, σ II 9, σ III 50, φ I 64, φ II 66, φ III 64, φ IV 24, ω 1 I 19, ω 3 I 25, ω 1 II 20.

FEMALE ( Figs.12 , 13 G, H) (range for 5 paratypes). Length of idiosoma 235–256, width at level of humeral shields 141–160. Prodorsal shield: lateral margins without incisions at level of setae si, posterior margin rounded; length 91–98, width 67–71; setae vi absent; setae se separated by 77–82. Length of hysterosoma 149–163. Hysteronotal shield roughly rectangular in shape; anterior and posterior margins slightly concave, lateral and posterior margins slightly sinuous; greatest length 87–91, greatest width at anterior half 58–67 ( Fig. 12 A). Setae d1 absent; setae d2 moved posteriorly from anterior margins of this shield; gland openings gl situated off hysteronotal shield. Distance between dorsal setae: c2: d2 42–52, d2: e2 55 –58, d2: d2 55–67, e2: e2 55 –63.

Epimerites I free with diverging tips, without sclerotised areas ( Fig. 12 B). Coxal fields I-IV open. Epigynum semi-circular, 32–38 long, 45–50 wide, with short median acute extension on inner margin. Setae g on soft tegument posterior to tips of epigynum. Copulatory opening ventral, posterior to anal opening. Setae ps1, ps2, f2, h3 minute, filiform about 9 long.

Legs I and II as in male. Setae d of tarsi III, IV filiform, longer than other tarsal seta, all tarsal setae filiform ( Fig. 13 G, H). Length of tarsi I 26–34, II 36 –37, III 47 –52, IV 52 –57. Length of solenidia: σ 1 I 50-56, σ II 7-9, σ III 26–3, φ I 62 –68, φ II 82 –88, φ III 53 –58, φ IV 29–38, ω 1 I 20–26, ω 3 I 22–27, ω 1 II 21–25.

Differential diagnosis. Among the five previously known Temnalges species, the new species Temnalges hoazin sp. n. is most similar to T. megalonyx by the absence of setae vi and in having both pairs of scapular setae se, si off the prodorsal shield. Temnalges hoazin differs from T. megalonyx and also from T. mesalgoides by the characters as follows. In males, the ventral extension of tarsi II are spine-like, both the paraxial and antiaxial dorsal spurs of tibia III are strongly reduced and scarcely distinct ( Fig. 13 C), ambulacral discs IV are strongly reduced, the epiandrum is absent, the opisthosoma is widely rounded, the terminal cleft is shallow and scarcely distinct, and the adanal apodemes are absent; in females, the posterior margin of the prodorsal shield has a small median extension, and the humeral shields are absent.

In males of T. megalonyx and T. mesalgoides , the ventral extensions of tarsi II are short blunt-angular, the paraxial dorsal spur of tibia III is well developed, as long as 1/3 of tibia length, ambulacral discs of pretarsi IV are normally developed, approximately as wide as the tarsus, the epiandrum is present, the opisthosomal lobes are distinct, with small semi-rounded terminal cleft and three pair of short lateral extensions bearing setae e2, f2, ps2, and the adanal apodemes are present; in females, the posterior margin of the prodorsal shield is straight, and the humeral shields are well developed.

Etymology. The epithet is taken from the specific name of the host, and is a noun in apposition.

Figures

FIGURE 11. Temnalges hoazin sp. n., male. A—dorsal view, B—ventral view.

FIGURE 12. Temnalges hoazin sp. n., female. A—dorsal view, B—ventral view.

FIGURE 13. Temnalges hoazin sp. n., details. A – F—male, G, H—female, A—leg I, dorsal view, B—leg II, dorsal view, Ctibia and tarsus III, dorsal view, D—leg IV dorsal view, E—leg IV ventral view, F—genital apparatus, G—tibia and tarsus III, dorsal view, H—tibia and tarsus IV, dorsal view.