Lasioseius serripes Moraza & Lindquist 2018, n. sp.

Lasioseius serripes n. sp. (Figures 3-7, 11B, 12A, B, G, 13 C-D, 14B) Zoobank: F1A4EE0C-0031-410D-B993-20CDC3D08D71 Diagnosis — Adult female: Sternal shield reticulated over entire surface, its posterolateral corners emarginated lateral to setae st3; poroids iv3 and setae st4 on soft cuticle; epigynal shield fully reticulated, its lateral margins parallel anterior to setae st5; ventrianal shield with posterolateral margins on either side of anus divergent, and with three pairs of opisthogastric setae, JV1 on soft cuticle; metapodal plates connected or coalesced on each side. Dorsal setae r6 usually on soft cuticle; Z5, S5 attenuated like adjacent setae. Adult male: Sternitigenital shield reticulated over entire surface. Leg II with dorsal setae dimorphically short, blunt on genu, tibia, tarsus. Tibiae III-IV with seta pv dimorphically hooked, blunt. Adult attributes: Gnathotectum anterior margin truncate, irregularly denticulate. Fixed chela with file of ca 20 teeth in female, ca 18 in male. Sternal setae st1 inserted on anterior edge of sternal shield. Tarsi II-IV with ventroapical process truncate-spiculate apically; tarsi II-III with seta av-1 slightly longer and thicker at base than pv-1 and both slightly longer than l- (1); tarsus IV with apical setae (v-1) symmetrically thicker than, and about twice as long as d- (1); pretarsal paradactyli small, symmetrical. Description Idiosomatic dorsum — Adult female: Dorsal shield 651 – 695 long, 337 – 385 wide at level of r3, 368 – 397 wide at level of r5 (n=9), lightly reticulated over entire surface, more faintly so behind setae Z4, where also faintly punctate. Shield with 37 pairs of setae, all acutely pointed (Figs. 3A, B), with few barbs, except J5 short (15 – 17), clearly barbed; J1-J4 about as long as longitudinal intervals between their bases, Z1-Z4 and S2-S4 longer than intervals between their bases; r3 erect, similarly as long as r2, r4: j1 (41 – 50), j2 (45 – 55), j3 (60 – 70), j4 (43 – 50), j5 (48 – 55), j6 (58 – 63), z1 (20 – 29), z2 (50 – 55), z3 (52 – 60), z4 (64 – 70), z5 (47 – 55), z6 (60 – 70), s1 (48 – 55), s2 (50 – 60), s3 (53 – 65), s4 (64 – 70), s5 (63 – 75), s6 (57 – 72), r2 (50 – 60), r3 (54 – 62), r4 (55 – 62), r5 (56 – 67), J1 (45 – 55), J2-J4 (48 – 62), Z1-Z3 (71 – 97), Z4 (87 – 102), Z5 (70 – 88), S1 (57 – 70), S2 (66 – 77), S3 (64 – 75), S4 (66 – 78), S5 (64 – 75). Lateral soft cuticle with eight pairs of smooth setae, including r6 (52 – 62), R1 (48 – 55), R2-R6 (44 – 52) and ZV5 (43 – 47) posteriorly. Adult male. Dorsal shield 557 – 587 long, 332 – 357 wide at level of setae r3, 325 – 353 wide at level of r6 (n = 5); shield ornamentation, complement of pore-like structures and setation as in female except slightly more expanded laterally so as to become united with peritrematal shields at level of setae s2 and bear marginal setae r6 and sometimes R1 (Fig. 5A). Dorsal shield with 37-38 pairs of setae, their form and relative lengths as in female, except bases of Z4, Z5, S4, S5 swollen sub-basally. Setae j1 (28 – 33), j2 (40 – 43), j3 (53 – 60), j4 (38 – 40), j5 (38 – 47), j6 (48 – 54), z1 (17 – 20), z2, z3 (45 – 50), z4 (55 – 60), z5 (38 – 44), z6 (50), s1 (46 – 48), s2 (52 – 56), s3 (50 – 61), s4 (58 – 65), s5 (58 – 65), s6 (55 – 58), r2-r4 (48 – 53), r5 (57 – 60), r6 (50 – 52), J1-J4 (40 – 47), J5 (9 – 12), Z1-Z3 (66 – 75), Z5 (61 – 72), S1 (50 – 52), S2 (55 – 57), S3-S5 (57 – 66), Z4 the longest opisthonotal setae (75 – 86). Lateral soft cuticle with usually six pairs of marginal setae (40 – 47). Form of peritrematal shields as in female. Idiosomatic venter — Adult female. Tritosternum base 28 – 33 long, 16 – 20 wide at its base, with paired laciniae fused along basal 15 – 22 of entire length (95 – 115). Presternal region with circumscribed pair of weakly lineated granulated areas adhered to anterior margin of sternal shield. Sternal shield 100 – 112 long, with irregularly concave posterior margin, 118 – 125 wide, well reticulated over entire surface, midsurface with narrower reticula; sternal setae of similar length, st1 (38 – 42), st2 (33 – 39), st3 (35 – 42). Sternal poroids iv3 and setae st4 (26 – 32) inserted on soft cuticle. Endopodal strips narrow between coxae III and IV. Epigynal shield well reticulated over entire surface, with narrower reticula anterior to insertion of st5 (36 – 42), its broadly rounded hyaline anterior margin not reaching posterior edge of sternal shield, its lateral margins nearly parallel anterior to setae st5, and its posterolateral corners slightly to clearly emarginated behind st5; shield 188 – 210 long, 95 – 107 at widest level at posterior angulate margin, 62 – 70 at narrowest width between legs IV. Opisthosomatic venter with two pairs of metapodal platelets connected or coalesced on each side, primary pair ovate, 25 – 30 long, 13 – 17 wide, secondary pair with greatest dimension transverse, 13 – 22; one adjacent set of small, narrow platelets near anterior margin of ventrianal shield, lateral to JV1. Ventrianal shield inversely subtriangular with rounded anterior corners, with posterolateral margins on either side of anus divergent anteriorly; surface strongly reticulate except faintly in anal region where also faintly punctate on either side of postanal seta; shield wider (253 – 295) than long (179 – 205), including cribrum (8 – 12); shield with three pairs of ventral setae and sometimes pores gv3: JV2 (33 – 40), JV3 (35 – 45), ZV2 (34 – 40); with paranal setae (20 – 27) shorter than postanal seta (49 – 62). Soft cuticle with six pairs of simple opisthogastric setae, JV1 and ZV1 (26 – 33) anterior to ventrianal shield, ZV3 (32 – 40), ZV4 (40 – 47), JV5 (55 – 65) flanking the shield, and ZV5 (43 – 47) aligned behind R6; three pairs of poroids (including ivp) and sometimes gland pore gv3 on soft opisthogastric cuticle. Peritrematal-exopodal shield with lines extending from stigma to irregularly rounded posterior margin (Fig. 4A); peritreme extending to level slightly anterior to insertion of setae s1 (Fig. 3A). Spermathecal apparatus with cup-like calyx ca. 30 – 35 long from atrium at base, 23 – 26 wide at distal margin (Fig. 3D). Adult male. Tritosternum much as in female, but with base biarticulate, longer (21 – 24) than wide (13 – 17), and laciniae (78 – 88) fused along basal 10 – 12 of entire length (Fig. 5C). Presternal region weakly granulated, with or without pair of weakly sclerotized transverse strips anteriorly. Sternitigenital shield length 245 – 283 from anterior margin of genital opening, widths 104 – 110 at level between coxae II, 92 – 100 between coxae III, and 58 – 71 between coxae IV; shield nearly fully reticulated, but bare near posterior margin where endopodal apices freely truncated beside coxae IV; shield medial region more weakly ornamented but punctate between setae iv1 and st3, and with poroids iv3 appearing as distinctively rounded pits; setae st1 on anterior margin of sclerotized region of shield; setae st1-st5 of dissimilar lengths as in female, st1-st3 (27 – 30), st4 shortest (20 – 23) and st5 longest (30 – 35). Ventrianal shield strongly reticulate as in female, its greatest width (282 – 305) larger than its length (178 – 220, including cribrum ca. 9 – 11 long, 75 – 86 wide); shield with seven pairs of opisthogastric setae; lateral margins irregular or eroded near where setae ZV4 on adjacent soft cuticle; setae JV1 (30 – 32), JV2 (37 – 42), JV3 (37 – 44), ZV1 (27 – 30), ZV2 (35 – 38), ZV3 (28 – 33), ZV4 (35 – 40), and JV5 the longest (50 – 59) inserted in bluntly angled lateral corners; postanal seta smooth (40 – 48), about twice as long as paranal setae (19 – 25). Soft opisthogastric cuticle with two pairs of setae, including ZV5 aligned behind R6, and one pair of lyrifissures, ivp (Fig. 5E). Gnathosoma — Adult female. Gnathotectum anterior margin broadly truncate, variably with two lateral, short, smooth prongs or with few denticles, sometimes with smaller denticles between lateral prongs (Fig. 3C). Cheliceral shaft, excluding basal section, 136 – 148 long, with slender digits (Figs 3E, F); dorsal seta blunt (8 – 11); fixed digit with tiny offset subapical tooth and row of 19-24 very fine teeth (Fig. 3E), pilus dentilus minute (1 – 2) at level of 4 th apical tooth; movable digit (62 – 72) tridentate. Subcapitulum rows of deutosternal denticles each with numerous (ca 25-40) fine denticles, those of most anterior row slightly coarser (ca 25-30), 2 nd- 5 th rows with ca 35-40 teeth, 6 th and sometimes 7 th rows slightly wider and slightly more denticulate (Fig. 4D); subcapitular setae hp1 (30 – 37) slightly shorter than capitular setae pc (36 – 42), hp3 slightly longest (40 – 47), much longer than hp2 (23 – 27). Salivary styli and corniculi as in figure 4C. Palp length (193 – 202); apical margin of palptrochanter without spines anterolaterally; palptrochanter setae dissimilar in length, v1 45 – 63 and v2 34 – 42 (Figs 4E, F). Adult male. Gnathotectum as in female (Fig. 5C). Cheliceral shaft, excluding short basal section, 110 – 120 long (Fig. 5F); fixed digit with offset subapical tooth followed by pilus dentilis behind hollow area and row of 10-16 small-sized teeth (Figs. 5F, G); movable digit (42 – 45) unidentate; spermatodactyl 40 – 57 long, 6 – 7 wide at base, slightly wider (8) at medial region, extending anteriorly ca 35 beyond apex of digit, with narrowed neck and small head apically (Figs 5F, H). Corniculi slightly more widely spaced and arched inwardly than in female, 25 – 30 long, and flanked medially by pair of short (7 – 8) spiculate processes (Figs 5I, 11B); internal malae and labrum as in female. Subcapitulum with seven or rarely eight rows of deutosternal denticles formed much as in female; hypostomatic setae hp1 not attenuated (21 – 27), slightly shorter than capitular setae pc (22 – 32), hp3 (30 – 37) slightly longest, hp2 shortest (15 – 20) (Fig. 5I). Palpi (length 173 – 188) similar in structure, form of setae as in female; palptrochanter with inner

Récupéré en direct depuis OpenAlex et désinversé. Les résumés ne sont pas conservés dans cette base de données : les index inversés représentent 8,6 Go des 9,3 Go de texte de la base, et le serveur dispose de 13 Go libres.