Eutrachytes flagellatus n. sp. Diagnosis ��� Adults with idiosoma discoidal in shape, as long as wide, with prominent anterior region and scabellum present; dorsal, marginal and peritrematal shields fused at the anteriormost region; posterior region of dorsal shield with a pair of marginal concave depressions present; submarginal shield with setae to the anterior level of coxa I in adult and nymphal instars; pygidial shield nude in all instars, only bearing one pair of poroids. Nymphal instars with a pairs of lateral flagellate tubular structures emerging from the peritreme. Hypostomal setae h2 longer than h1 and p4 divided in two pilose dissimilar branches. Larval podonotal shield with nine pairs of setae, three pairs of mesonothal scutellae; protonymph with five pairs of setae on podonotal shield, nude mesonotal and nude pygidial; deutonymphs with dorsal and marginal shield fused at anterior region and peritrematal shield free as in the protonymphal instar. Legs I-IV with pretarsus, a pair of well developed claws and three acuminate lobes; femora I-IV with ventral keel; femora II in the male with ventral setae modified as a conspicuous thick spine. Female Dorsal idiosoma (Fig. 1A) ��� Idiosoma discoid in shape, almost as long (570 ��m) as wide (522 ��m), with smooth margin and humeral peritremal protrusions. Dorsal and marginal shields fused anteriorly at level of humeral protrusions, and fused with peritrematal shield at level of z2. Anterior dorsal shield rounded acuminate, slightly bent to ventral region. Pygidial shield ca. 18 times wider than long, with posterior margin slightly lobulated, with one pair of poroids (lyrifissures) and at least three pairs of punctiform poroids. Submarginal shield rearchs the posterior margin of peritremes where bends ventrally covering part of distal peritremal loop (Figs 1B, 1D). Dorsal shield with lightly granulate cuticle, c.a 40 pairs of short, homogeneous in length, pilose setae, neotrichy present (podonotal region with several unpaired central setae jx, and duplicate setae j1, j2, j3, j6, z4, z5, s5; marginal shield with 11 pairs of setae (r2-r6, R1-R6) similar in length and shape, and ca. 20 pair of setae with sparse and longer pilosity on the ventral submarginal region (setae UR). Most dorsal setae associated to a punctiform pore like structure. Shield with a pair of concave marginal depressions at the posterior region which remain under the shield and open laterally over the marginal shield. Ventral idiosoma (Fig. 1B) ��� Tritosternum with a strongly dentate base 34-36 ��m long and three pilose laciniae free for most of length; medial lacinia longer (45 ��m) than laterals (19 ��m), devoid of basal pilosity and with bifid end (Fig. 2D). Sternal shield with anterior margin well delineated and a medial convexity. Sternal setae minute, smooth, poorly discernible; setae st1 anterior to epigynal shield, accompanied by a pair of elongated lyrifissures iv1 and a pair of punctiform poroids (gst1); st2 at both sides of epigynal shield, close to st1, distance st1- st2 near one third st2-st3; st3 together with poroids iv2 at margin of genital opening, and pores gst2; st4 behind the shield and the third pair of pores gst3 at the posterior corners of the shield; genital setae st5 behind coxae IV similar to sternal setae. Epigynal shield densely granulated as other idiosomal shields, subtriangular in shape, 125 ��m long 118 ��m wide, with straight posterior margin and acuminate anterior margin; one pair of liryfissures at the posterior region; shield located between coxae II and anterior margin of coxae IV. Endogynum with a pair or cup-like structures. Opisthogaster with three pairs of minute ventral setae (JV1 and two more pairs " Vx " associated to glandular pores at the parapodal region of coxae IV), similar to sternal setae, and seven pairs at the posterior region laterals to anal opening which are similar in shape and length to the three circumanal setae such as in figure 1B; at least two pairs of liryfissures ivo and eight pairs of pores (at least four are glandular pores). Anal opening framed, small and rounded (diameter 16 ��m), with nude anal valves; paranal and postanal setae ciliate, similar to other ventral lateral setae, and posterior to anal opening. Between setae JV1 and st5 a circular subcutaneous structure is observed with a pair of sigillar area at both sides of it. Endopodal elements between legs I-II, II-III and III-IV fused to sternal shield; endopodal I with a strong anterior apophysis with lateral corner acuminate and internal corner rounded; exopodal I-II as a hemispherical apophysis; exopodoal elements between coxae II-III and III-IV free from endopodal; parapodal IV semilunar in shape, well developed, at the botton of pedofosae IV. Pedofosae II, III and IV well delimited, separated by longitudinal bridges. Peritrematal shield with one pair of dorsal setae at both side of peritreme distal loop (Fig. 1A). Respiratory stigmata situated in pedofosae III; from the stigmata the peritreme ascends to lateral conical protuberance at level of pedofossae II and descends for a shorter and narrow stretch; peritreme curved dorsally at level of the humeral conical protuberance (Figs. 1C, 1D). Gnathosoma ��� Gnathotectum (Figs. 2A,B). with a broad dentate base and medial projection with ventral surface provided of minute spines (Fig. 2A), lateral margins with 5-6 strong long spines (Fig. 2B), and a series of marginal strongly ciliate long setae; at the base of the medial projection, bent to ventral side, a strong dorsal bifid tectum (Fig. 2B); dorsally, at the basal region of central projection, three pairs of marginal long barbed straight setae (Figs. 2A,B). Corniculi hornlike, short (32 ��m), stout (18 ��m), inserted midway between insertions of subcapitular setae h1 and h2, (Fig. 2C); h1 smooth, shorter (32 ��m) than slightly pilose h2 (40 ��m); pilose h3 the longest setae (64 ��m), twice the length of h1, capitular setae (h4) the shortest (20 ��m) with a distal pilosity and a widened pilose process at the medial region (Fig. 2C). Internal malae short with lateral margins pilose, extending to medial length Moraza M.L. et al. of palpfemora (Fig. 2C). Deutosternum with two smooth and wide groves between h3 and h4. Palpal setation and form of setae as described by Krantz (1969) (2-5-5-14); palp- trochanter with inner setae (47 ��m) twice as long as external seta (Fig. 2C), the last spinose; palp-claw two-tined. Chelicerae (Fig. 2E) with fixed digit edentate, (52 ��m long) overlapping movable digit and nodulus present; digit with a socket subterminally which receives the hooked tip of the movable digit when the two are appressed (Fig. 2E); a densely pilose surface (brush) at masticatory region; terminally with a spine or lateral mucro. Movable digit of female 61-63 ��m long, with a dentate comb at distal region (c.a 17 teeth) followed by a prominent alveolar remnant (or two opposed teeth), and basal region smooth; dorsal cheliceral setae no discernible if present; without conspicuous arthrodial process (Fig. 2E). Legs ��� Legs relatively short, clearly shorter than dorsal shield. Coxae I with two groups of coxal glands, dorsal concavity and laterodorsal surface with rounded prominences (Fig. 3E); coxae II-IV with numerous ventro basal glandular openings; except tarsus I-IV, all other segments with a dorso distal striate tectum overlapping the articulation with the following segment; femora I-IV with a conspicuous ventral tectum (Fig. 3A). Tarsus I with a pair of claws and a series of long terminal setae. Pretarsus of legs I to IV with slender claws at the end of a relatively long stalk; legs II-IV with three slender acuminate lobes (Figs. 3D,G). Tarsus II-IV about twice as long as tibia, telotarsus twice longer than basitarsus (2.2 ��m); apical ventral process absent; with 17 setae, apical setal processes ad1, pd1 minute ("d1"), spinelike (Fig. 3B), and telotarsal seta md twice as long as lateral setae al1, pl1; basitarsal setae feather-like, dorsal setae short (9 ��� 10 ��m), al3 reaching al2 setae (29 ��� 31 ��m) and pl3 the longest (51 ��� 53 ��m) reaching pair of lateral setae al1, pl1 (Figs. 3B,H). Other leg setae simple or slightly barbed. Full complement of setae: coxae, 2-2-2-1; trochanters, 5-5-5-5; femora, 9 (1 2/1 2/2 1) ��� 9 (1 2/1 2/2 1) ��� 7 (1 3/2 1) ��� 7 (1 3/2 1); genua, 8 (1 2/1 2/1 1) ��� 8 (1 2/1 2/1 1) ��� 8 (1 2/1 2/1 1) ��� 5 (1 2/0 2/0 0); tibiae, 7 (1 1/1 2/1 1) ��� 7 (1 1/1 2/1 1) ��� 7 (1 1/1 2/1 1) ��� 7 (1 1/1 2/1 1). Leg lengths, excluding pretarsi: I 330 ��� 340 ��m, II 320 ��� 2325 ��m, III 300 ��� 310 ��m, IV 300 ��� 310 ��m. Male Dorsal idiosoma ��� Similar to female in shape; dorsal shielding and dorsal setae as for the female. Ventral idiosoma ��� Anterior region of sternal region as in the female (Fig. 1E), with four pairs of minute sternal setae, two pairs of poroids (iv1, iv3), two or three pairs of glandular pores (gst1, gst3), and one pair of punctiform pores; setae st5 behind genital opening betwee coxae IV, similar to other sternal setae. Genital opening (23 ��� 24 ��m long) between legs III. Other ventral characteristics as in female. Gnathosoma ��� As in female. Legs ��� Legs segments not strongly differentiated on either sex, except for a ventral thick claw like setae in femur II (Fig. 3C), spine like setae pv 1 in genua and tibia I-IV, and seta pv2 with a bulbose base in tasus II-IV (Fig. 3D). Anterior lateral ventral margin of the segments, except tarsi, strongly serrate (Figs. 3C,F). Legs length: I 310 ��� 315 ��m, II 310 ��� 315 ��m, III 290 ��� 295 ��m, IV 300 ��� 305 ��m. Deutonymph ��� Idiosoma 497 ��m long, 420 ��m wide at level of coxae III-IV (n=1). Dorsal idiosoma ��� Dorsum (Fig. 4A) discoidal, with acuminate anterior region and humeral angles absent. Marginal shields completely differentiated, separated form dorsal shield by a fine suture which became indistinct anteriorly; pygidial shield undifferentiated except for the presence of a pair of poroids set on conical tubercles. Dorsal shield fused with marginal shields at level of setae j3, with granulate cuticle ornate with rounded shallow pits; shield holotrichous with 23 pairs of similarly short ciliate setae (Fig. 4C) (j3-j6, z3-z6, s3-s6, J1-J5, Z1-Z5, S1-S5), except posteriormost Z5 elongate and slightly curved (87 ��m long); sometimes two setae "x" between j3 and j4 present). Marginal shield with setae j2, z1, z2 on the anterior acuminate region of shield, similar in shape to j1 (30 ��� 34 ��m long); other marginal setae (s2, r2-r6, R1-R6) apparently shorter, similar to setae on dorsal shield. Interior region of marginal shield lacks setae, only with three pairs of gland pores (including pygidial pores). Complement of pores as in figure 4A; dorsal shield with four pairs of lyrifissures, six pairs of glandular pores, and five pairs of punctiform poroids (the three pairs of glandular pores at the marginal region of dorsal shield may be related to concave formations in the adult); most setae on marginal shields associate to poroids set on conical tubercles. Submarginal region poorly sclerotized with j1 and ca. 25 pair of curved and ciliate setae (setae UR) similar in length and shape to anteriormost podonotal setae (Fig. 4C); no discernible poroids in this region. All dorsal setae set on conical tubercles. Ventral idiosoma (Fig. 4B) ��� Anterior acuminate prominence with four dentate marginal lobes. Sternal shield well sclerotized and ornamented with polygonal cells from setae st2 to posterior margin of the shield; shield free from endopodal extensions between coxae II and III, with five pairs of setae st1- st5, three pair of glandular pores (gst1-3), and three pairs of no glandular poroids (iv1, iv3, iv5); shield 246 ��m long, 76 ��m wide at level of st2, 27 ��m long at level of st5; eroded at level of gv1 and narrowed behind st4: st5 and iv5 at the posterior margin of the shield at level of coxae IV (Fig. 4B). Setae st1, st3-st5 minute and smooth (2-3 ��m), st2 rod-like, thicker and almost twice longer (5 ��m). Ventrianal shield well sclerotized and ornamented, almost three times wider than long (67 ��� 69 ��m long, 262 ��m wide), with pilose circumanal setae similar in length (ca. 27 ��m), three pairs of ventral setae at the anterior margin of the shield, JV3 (16 ��� 18 ��m) poorly ciliate, JV4 and JV5 similar to other posterior most opisthogastric setae, two pairs of glandular pores, each associated with ventral setae JV3 and JV5, and gv3 at the posterior margin at level of postanal setae; one pair of poroids associated to JV4; cribrum narrow as in adult. Opisthogaster with five pairs of ventral setae on soft tegument, JV1 shortest (8 ��m) and smooth and four pairs of ciliate setae set on tubercles at the lateral sides (ZV1, ZV3- ZV5); two pairs of glandular pores and one pair of discernible poroids on soft opisthogastric cuticle (Fig. 4B). Endopodal strips between legs II and III present and free; endopodal between coxae III and IV fused with parapodal elements, and pedofossae IV well developed bearing one anterior liryfissure and one posterior glandular poroid: exopodal elements II and III fused and contiguous with exopodal I-II. One pair of poroids distinct on soft cuticle between legs III and IV. Rim of exopodal plate behind coxa IV inconspicuous. Peritrematal shield from coxae I to anterior margin of coxae III ornate as exopodal elements; respiratory stigmata at level of coxae II, peritremes extending to a point between coxae I and II and continues outside the body given way to a long, flagellate and tubular structure (Fig. 4B). This hollow cuticular structure has heavily ringed surface and its diameter decreases progressively at the distal end (Fig. 5A). Gnathosoma ��� Gnathotectum, chelicerae and other mouthpart structures, corniculi and adjacent structures as in adult female; palpi similar to those in adult female, including similar form of setae on palptrochanter. Legs ��� Pretarsal structures, chaetotaxy and form and shape of leg setae similar to those on adult female, except that femora I-IV lack ventral tectum. Legs length: I 330 ��� 340 ��m, II 290 ��� 300 ��m, III 300 ��� 305 ��m, IV 325 ��� 330 ��m. Chaetotaxy of legs I-IV as in adult, including fanlike setae on basitarsi II-IV. Protonymph ��� Idiosoma 302 ��m long, 242 ��m wide at level of coxae III (n=1). Dorsal idiosoma ��� Dorsum (Fig. 5A) with well sclerotized rhomboidal podonotal shield with rounded corners and eroded lateral margins; shield ca. 171 ��m long, 138 ��m wide, with central region punctate and lateral regions ornate with round shallow pits; one pair of nude, slightly ornate mesonotal shield at both sides of posterior region of podonotal shield, 49 ��� 53 ��m long, 25 ��� 26 ��m wide, and nude pygidial shield narrow (13 ��� 14 ��m long, 84 ��m wide), as a concave strip, and with one pair of poroids at the lateral corners. Dorsal setation holotrichous, with addition of setae j2, J1, Z1, Z2, s5, S2, r2, r3, r5, R1; paravertical poroids associate to j1 distinct and tuberculate (Fig. 5A). Podonotal shield with five pair of ciliate setae (j3-j6, z5), similar in length and shape to larval setae and four pairs of poroids (three pairs appear to be glandular pores). Other podonotal and opisthonotal setae on soft cuticle, including setae J1, J2, Z1 similar to setae on podonotal shield (short and curved), with sparse and long ciliae and set in conical tubercles; other dorsal setae longer, slightly curved with few ciliae; setae z4, r3, R1 (9 ��� 11 ��m); other podonotal setae, Z5 and S2 (ca. 22 ��m long), s5 and other opisthonotal setae longer (29 ��� 40 ��m). Soft tegument with 18 pairs of poroids as in figure 23 (eight pododontal and 10 opisthonotal); pores associate at the base of dorsal setae j1, r2, z4, s4, s5, s6, J2, J5, S4, S5. Peritremal shields narrow, laterally with a conical peritremal extension at level of setae s4 and r5, of which emerges a tubular flagellate tubular structure similar to the subsequent deutonymphal instar (Fig. 5B). Ventral idiosoma (Fig. 5B) ��� Sternal shield as in deutonymph, well sclerotized, pear like in shape, 115 ��m long, 82 ��m wide and level of setae st2; shield entire, without endopodal extensions between coxae II-III and III-IV, and with sternal setae st1-st3 on rounded rounded tubercles, and poroids iv1; setae st1 (4 ��� 5 ��m long) and st3 (6 ��� 7 ��m) shorter than st2 (28 ��� 29 ��m); thin and smooth st5 behind coxae IV (4 ��� 5 ��m long). Intercoxal soft cuticle with a subcutaneous clear spot between coxae IV. Opisthogaster with well sclerotized subpentagonal anal shield of moderate size (65 ��m long, 89 ��m wide), relatively longer than in subsequent deutonymphal instar, and with three circumanal pilose setae similar in shape and length to JV5 (15 ��� 16 ��m), glands gv3 on the margin posterior to postanal setae, and cribum. Opistogaster with one pair of porelike structures and two pairs of pilose setae (JV1, JV5) on tubercles. Rim of exopodal plate not discernible behind coxae IV, but inguinal gland pores gv2 and poroids present there. A pair of poroids lateral to coxae III-IV. Reduce peritrematal shields with short and narrow peritremes between coxae II and III. Gnathosoma ��� Gnathotectum and tritosternal base as in subsequent instars. Form of corniculus and internal malae much as in subsequent instars; deutosternum similar to those in deutonymphs. Palps with normal complement of setae (1-2-5-12); chelicera not clearly discernible in a single available specimen; palp-trochanter nude. Legs ��� Legs I to IV with pretarsi, welldeveloped claws and pulvillus. Legs complement of setae as follows: coxae, 2-2-2-1; trochanters 5-5-5- 5; femora 9 ��� 9 ��� 6 ��� 6; genua 6 (1 2/0 2/0 1) ��� 6 (1 2/0 2/0 1) ��� 6 (1 2/0 2/0 1) ��� 5 (0 2/0 2/0 1); tibiae 7 (1 1/1 2/1 1) ��� 7 (1 1/1 2/1 1) ��� 7 (1 1/1 2/1 1) ��� 7 (1 1/1 2/1 1). Basitarsus II-IV as long as telotarsus excluding the pretarsus. Coxa, trochanter, femora, genua and t, Published as part of Moraza, M. L., Kontschan, J., Sahoo, G. & Ansari, Z. A., 2016, A new species of Eutrachytes (Acari: Uropodina: Eutrachytidae) associated with the Indian mangrove (Avicennia officinalis), pp. 73-89 in Acarologia 56 (1) on pages 75-85, DOI: 10.1051/acarologia/20162189, http://zenodo.org/record/4640182, {"references":["Krantz G. W. 1969 - The Mites of Quintana Roo. I. A new species of Eutrachytes from the Yucatan Peninsula, with observations on the classification of the genus - Ann. Entomol. Soc. Am., 62 (1): 62 - 70.","Moraza M. L., Lindquist E. E. 2015 - Systematics and biology of mites associated with neotropical hispine beetles in unfurled leaves of Heliconia, with descriptions of two new genera of the family Melicharidae (Acari: Mesostigmata: Gamasina: Ascoidea) - Zootaxa 3931 (3): 301 - 351 doi: 10.11646 / zootaxa. 3931.3.1"]}