Philippinozercon makilingensis Gerdeman & Garcia & Herczak & Klompen 2018, sp. nov

Autor: Gerdeman, Beverly S., Garcia, Rufino C., Herczak, Andrew, Klompen, Hans
Rok vydání: 2018
Předmět:
DOI: 10.5281/zenodo.5965976
Popis: Philippinozercon makilingensis Gerdeman, Garcia, Herczak & Klompen sp. nov. (Figs. 1���11) FIGURE 1. Philippinozercon makilingensis sp. nov., chelicera. A, Deutonymph (OSAL 0053228); B, Female (OSAL 0053222); C, Male (OSAL 0053267). Scale bar = 50 ��m. FIGURE 2. Philippinozercon makilingensis sp. nov., chelicera male, confocal microscopy, maximum intensity projection. Diagnosis: with characteristics of the genus. Description.Available specimens. Slide mounted: 6 females, 6 males, 4 larvae, 6 protonymphs, 6 deutonymphs; in fluid (75% ethanol): 11 larvae, 25 nymphs. Gnathosoma Chelicera (Fig. 1). Immatures (Fig. 1A). Basic morphology in larva, protonymph and deutonymph identical. Movable digit without teeth but with basal ���comb-like process��� (Gerdeman & Klompen 2003) composed of densely packed extensions; ventrally with a finger-like excrescence with a bifid tip (larva) or extensive barbs (deutonymph). Fixed digit with two small teeth and prominent pilus dentilis. With a single rounded interdigital membranous excrescence. Cheliceral seta well developed; dorsal and axial lyrifissures present. FIGURE 3. Philippinozercon makilingensis sp. nov., palp. A, Deutonymph (OSAL 0053262), dorsal view; B-C, Male (OSAL 0053267), separate dorsal (B) and ventral (C) views. Scale bars = 50 ��m. FIGURE 4. Philippinozercon makilingensis sp. nov., gnathotectum. A, Deutonymph (OSAL 0053262); B, Female (OSAL 0053269). Scale bars = 50 ��m. Adults. Female (Fig. 1B): movable and fixed digits thin (width 8���12; Table 1), elongate (length/width ratio 11:1). Movable digit with 2 small teeth near tip and a dense fimbriate comb along entire dorsal margin; ventrally with finger-like excrescence terminating in bifid tip. Fixed digit with about 6 small teeth in distal half; pilus dentilis not observed. With two interdigital membranous excrescences. Cheliceral seta short; both cheliceral lyrifissures present. Male (Figs. 1C, 2): Movable digit as in female (width 10���12), ventral finger-like excrescence barbed. Fixed digit strongly reduced; spermatodactyl on fixed digit massive (length 119���130), with two basal twists, terminating in an elongate point. Only one interdigital membranous excrescence observed. Cheliceral seta and lateral lyrifissure present, dorsal lyrifissure not observed. Palp (Fig. 3). Immatures (Fig. 3A). Thin and elongate (length/width ratio in larva 8.7, in protonymph 10.1, in deutonymph 13.7; Table 1), femur and genu at least 5x as long as wide; palps often flexed at femur-genu joint. Tibia and tarsus fused, pretarsal apotele strongly reduced. No axial extensions on trochanter. All setae smooth, setiform; chaetotaxy in larva 0- 4-5-10, in protonymph 1-6-5-10, in deutonymph 2-6-5-15. FIGURE 5. Philippinozercon makilingensis sp. nov., subcapitulum. A, Deutonymph (OSAL 0053262); B-C, Male (OSAL 0201161), ventral view (B), labrum and paralaciniae (C); D, Female (OSAL 0053271). Abbbreviations: Cor, corniculus; LL, lateral lips. Scale bar = 50 ��m. Adults (Fig. 3B���C). Palp relatively thick, stocky (length/width ratio 4.3���5.7). Tarsus and tibia distinct; pretarsal apotele with 2 slender tines. Femoral setae thickened into spines, elongate (59���65); some femoral, genual, and tibial setae with fine barbs; chaetotaxy 2-6-3-14 -12. Trochanter with membranous axial extension in both sexes; trochanteral seta v1 strongly reduced, inserted on axial extension; v2 short, setiform. Gnathotectum (Fig. 4). Immatures (Fig. 4A). Larva: gnathotectum appearing more or less rectangular but with a single, median ���spike���; anterior margin dentate (see Narceoheterozercon). Proto- and deutonymph: with three somewhat irregular points, margin with a few denticles; central point often appearing bifid; surface covered with small denticles. Adults (Fig. 4B): gnathotectum with a single, smooth edged, broadly rounded lobe; surface covered with small spines. Subcapitulum (Fig. 5). Immatures. Larva: corniculi thin, membranous, indistinct; 2 pairs of hypostomal setae (hyp1, hyp2), setae smooth, setiform. Deutonymph (Fig. 5A): corniculi (Cor) long, thin, membranous, indistinct; 3 pairs of hypostomal setae (hyp1-hyp3) in triangular arrangement, subcapitular setae (Sc) medium long; all setae smooth, setiform. Deutosternal borders weakly developed, with 3���4 rows of small denticles; 2���3 small transverse rows of denticles on remaining subcapitulum. Lateral lips (LL) triangular, membranous. Adults: corniculi fairly large, membranous, may have marginal fimbriations; setae hyp1 and hyp3 short, seta hyp2 twice as long, inserted almost at level of hyp1; setae Sc medium long, all setae smooth, setiform. Deutosternum in male weakly delineated, with 3���4 rows of small denticles, in female better delineated but without distinct denticle rows; multiple largely transverse rows of denticles on remaining subcapitulum. Lateral lips well-developed, shaped into a ���plow-like��� structure (Fig. 5B, D); labrum simple, lanceolate in shape, fimbriate throughout; paralaciniae well-developed (Fig. 5C). FIGURE 6. Philippinozercon makilingensis sp. nov., idiosoma, dorsal. A, Larva (OSAL 0118721); B, Protonymph (OSAL 0118723); C, Male (OSAL 0053267).Abbreviations: LAS, long anterior seta; SAS, short anterior seta. Scale bar A, B = 100 ��m; C = 200 ��m. Idiosoma Dorsum (Fig. 6). Immatures. Larva (Fig. 6A): No observable shields. Idiosomal setation reduced to 2 pairs of small setae mid-laterally, and a pair of very long setae on posterior margin (Z5 ?). Protonymph (Fig. 6B): antero-dorsal shield present, with weak reticulations, separated from anterior margin of idiosoma by band of faintly striate cuticle; shield margins very poorly defined. Setation: with 3 pairs of medium-long to long setae (LAS) and 1 pair of shorter setae (SAS) on anterior margin, 4 pairs of short setae central, 1 pair of medium length setae on lateral margin, bundles of long setae posterior lateral (average number 23, range 22���26; N=6), and 2 pairs of medium-short setae on or near posterior margin. Homology assessments for these setae were not attempted, although homologues to setae Z 5 in the larva are assumed to be among the bundle setae. Deutonymph: dorsal shield more defined than in protonymph, with distinct reticulations; shield forming an oval from the anterior border of the idiosoma posterior to include the most posterior pair of short setae. Setation: similar to protonymph, but additional pairs of setae in anterior marginal (1 pair), central (1 pairs), lateral marginal (1 pair) groups, and posterior margin (1 pair) groups, and an average of 36 (range 32���41; N=10) setae in postero-lateral bundles. Adults (Fig. 6C). Well-sclerotized holodorsal shield with faint reticulate patterning (Fig. 6C, detail inset), leaving only anterolateral area unsclerotized; peritrematal shield not fused to dorsal shield. Setation: hypertrichous, nearly all setae minute (3���7), setae j 1 12���22) Venter (Figs. 7���8). Immatures. Larva (Fig. 7A): No shields observed. Three pairs of sternal setae (st1-st3; 20���39) of medium length, a pair of medium long paranal setae (pa) inserted distinctly anterior of anus, and a very long postanal seta (po). Protonymph (Fig. 7B): no shields observed; peritreme minute, without visible peritrematal shield. Cribrum pentagonal, width similar to distance between setae pa, depth half that distance. Relative length setae pa as in larva, seta po much shorter. In sternal region st5 added posterior to coxae IV; one pair of setae added lateral at level of peritreme; ventral region with 3���4 pairs of ventral setae in addition to pa and po. Deutonymph: no shields observed; peritreme only slightly longer than in protonymph; cribrum shape and length of pa and po setae as in protonymph. Ventral region adding 2 pairs of setae. FIGURE 7. Philippinozercon makilingensis sp. nov., idiosoma, ventral. A. Larva (OSAL 0118721); B. Protonymph (OSAL 0118723). Scale bar = 100 ��m. Adults. Female (Fig. 8A): tritosternal base widened basally. Setae s t1 each on separate shield with pore iv1; each seta s t2 with pores iv2 and iv3 on sternal / endopodal shield. Sternal / endopodal shield connected posterior to coxa IV with fused metapodal, exopodal and peritrematal shields; posterior lateral corner of metapodal shield sharply angled. Peritremes extending anterior to coxae I; peritrematal / metapodal shields with about 3 lyrifissures and 5 gland openings each. Geniti-ventral shield well-developed, with faint reticulate patterning except in anterior region which is more membranous; anterior region seemingly fused with curved sclerite extending as a distinct strip between the geniti-ventral shield and the sternal shield remnants. Setae st3 on soft cuticle between lateral arms of the sclerite and the geniti-ventral shield; setae st5 inserted on geniti-ventral shield at base of genital portion of that shield; setae st4 not added. Geniti-ventral shield partially fused with anal shield, separated medially by a distinct fusion line between the ventral suckers; ventral suckers well-developed, positioned in ventro-lateral corners of ventral shield. Setae Jv1, Zv2 (small), Sv2 (small) and Sv3 inserted antero-lateral of suckers, setae Jv2 anterior to partial fusion line, Jv5 posterior to that line; setae pa inserted posterior to anus, almost in line with short seta po. Cribrum wide but thin, width similar to distance between setae pa. Narrow well sclerotized postero-marginal shield with 1 pair of long setae (Z5; often broken off) and numerous minute, setiform setae. Additional minute, setiform, setae on soft cuticle posterior (most) and lateral (few) to postero-marginal shield. Male (Fig. 8B): Pair of small presternal shieldlets anterior to tritosternum carrying no setae or pores. Sternal setae st1-st3 plus pores iv1-iv3 on pair of fused sternal / endopodal shields which are connected to fused metapodal, exopodal, and peritrematal shields (as in female). Genital shield square, presternal, partially overlapping base of tritosternum; (geniti-)ventral shield completely separating the 2 sternal / endopodal shields, adjoining the genital shield anteriorly. Setae st5 on geniti-ventral shield at level of coxae IV. All other characteristics as in female. FIGURE 8. Philippinozercon makilingensis sp. nov., idiosoma, ventral. A, Female (OSAL 0063222); B, Male (OSAL 0053267). Scale bar = 200 ��m. Legs (Figs. 9���11) Immatures. Larva (Figs. 9A, 10A, 11A): Leg I elongate, relatively thin. Chaetotaxy (legs I���III): coxae 2, 1, 1; trochanters 4, 4, 4; femora 2-2/1-2/1-2, 0-2/1-2/0-1, 0-2/1-1/0-0; genua 2-2/1-1/1-1, 1-2/0-2/0-1, 1-2/0-2/0-1; tibiae 1-1/1-2/1-1, 1-1/1-2/1-1, 1-1/1-2/1-1; tarsus I not studied, tarsi II���III 16, 16. Some setae on legs I and III unusually elongate, on leg I: tarsal, distal (170), median (292), tibial ad1 (251), av1 (292) and pd1 (253) and genual pl1 (219), av1 (236), ad1 (154) (Note: these setal designations are tentative. The lack of matching between long setae on the larval leg I and the nymphal setae (see below) is unusual and somewhat disturbing); on leg III: tarsal pd2, pd4, tibial pd1 (161), and genual pd1 (203). Protonymph: Chaetotaxy as in larva but with addition of one seta to femora II (1-2/1-2/0 1) and one to femora III (1-2/1-1/0-0); tarsi II���IV 17 (addition ad2 / md). Legs IV: coxae 1; trochanters 4; femora 1-2/0-0/0-1, genua 1-2/0-2/0-1, tibiae 1-1/1-2/1-1. Elongate setae restricted to legs I: tarsi, distal (168) and median (313); tibiae al1 (318), genua al1 (227), av1 (248), pl1 (320). Setae pl1 on basitarsi, tibiae, and genua IV slightly thickened, with prominent, long barbs (Fig. 11B, inset). Deutonymph (Figs. 9B, 10B, 11B): Leg I elongate, relatively thin. Chaetotaxy (legs I���IV): coxae 2, 1, 1, 1; trochanters 6, 5, 5, 5; femora: 2-3/1-2/1-2, 2-3/1-2/1-1, 1-2/1-2/1-0, 1-2/1-1/1-1; genua 2-2/1-2/1-2, 2-2/1-2/1-1, 2-2/1 3/1-1, 2-2/1-3/1-1; tibiae 2-1/1-2/1-2, 2-1/1-2/1-1, 2-1/1-2/1-1, 2-1/1-2/1-1; tarsi II���IV 18 (addition av3 / mv). Elongate setae as in protonymph: tarsi, distal (227), median (390); tibiae al1 (403), genua al1 (286), av1 (344), pl1 (344). Setae pl1 on basitarsi, tibia and genua IV as in protonymph. FIGURE 9. Philippinozercon makilingensis sp. nov., legs I. A, Larva (OSAL 0053229); B, Deutonymph (OSAL 0053259); C, Male (OSAL 0053267). Scale bars = 100 ��m. Adults (Figs. 9C, 10C). Legs I antenniform. Chaetotaxy: coxae 2, 2, 2, 1; trochanters: 6, 5, 5, 5; femora 2-3/1- 2/1-2, 2-3/1-2/1-1, 1-2/1-2/1-0, 1-2/1-2/1-0; genua 2-2/1-2/1-2, 2-2/1-2/1-1, 2-2/1-3/1-1, 2-2/1-3/1-1; tibiae 2-1/1- 2/1-2, 2-1/1-2/1-1, 2-1/1-2/1-1, 2-1/1-2/1-1; tarsi II���IV 18, 18, 18. Modified setae. In male: most setae on trochanters I (exception pv1, pv2), and femora I (exception pl1, pl2) spinose, femoral setae al1 (88), al2 (79), v1 (104), and v2 (55) distinctly elongate spines with rounded tips; tibial and genual setae av1 elongate (116), thickened, with relatively pointed tips. Female with femora I setae v1 (117) and al2 (104) long spines and longer than in males, but setae al1 and v2 shorter than in male. Setae ad1 on femora I in both sexes about twice as long as pd1. Tarsal setae ad1 and pd1 II���IV small, somewhat leaf-like in shape. Legs II in male: femora, genua, and tibiae inflated (rel. to female). Nearly all femoral setae spinose (exception av1 (36) which are setiform): setae pl1 small, curved spines, pv1 massive, blunt-tipped spines (72, basal width 18); genual and tibial setae pv1 small, blunt spines; genual pv1 length 16, basal width 8. FIGURE 10. Philippinozercon makilingensis sp. nov., legs II. A, Larva (OSAL 0053229); B, Deutonymph (OSAL 0053265); C, Male (OSAL 0053267). Scale bars = 100 ��m. Deposition of types. Holotype male (OSAL 0053267) and most paratypes at (UPLB); paratypes at OSAL. Material examined (unless stated otherwise, all specimens are slide mounted). Luzon Is., Laguna prov., UPLB campus, DITRI, Los Ba��os, 14.1530 N 121.2458 E, 14-Jul-2001, Garcia, R. C., ex old/fresh millipede frass & fungus litter, coll. event no. 0163-E: 1-M, OSAL 0 0 53267 (holotype); 1- PN, OSAL 0053264; 1- DN, OSAL 0 0 53265; 1- DN, OSAL 0 0 53266. Same locality, 24-Jan-2000, Garcia, R C, ex downed log (tree species unknown), coll. event no. BSG 00-0124-1/2. 1-(PN), OSAL 0 0 53270. Same locality, 11-Aug-2000, Garcia, R C, ex unidentified forestry millipede with yellow legs, coll. event no. BSG 00-0811-1: 1-F, OSAL 0 0 53269. Same locality, 14-Jul-2001, Garcia, R C, ex old & fresh millipede frass & fungus litter, coll. event no. 0161-C: 1- DN, OSAL 0 0 53258;1- DN, OSAL 0 0 53259; 1- DN, OSAL 0 0 53262;1-F, OSAL 0 0 53260;1-L, OSAL 0 0 53261. UPLB campus, Hortorium, 14.1650 N 121.2378 E, 14-Mar-2000, Gerdeman, B. S., Garcia, R. C., ex coconut shell, coll. event no. BSG 00-0314-2: 1-M, OSAL 0 0 99469; 1-M, OSAL 0 102161; 1-M, OSAL 0 102162. UPLB Forestry Campus, 14.1520 N 121.2361 E, 11- Dec-2000, Garcia, R. C., coll. event no. 0171: 2- DN (in 75% ethanol), OSAL 0 128359. Same locality, 11-Jan-2001, Garcia, R. C., coll. event no. 0141-A: 2-L 1-N (in 75% ethanol), OSAL 0 128368; 17-Jan-2001, Garcia, R. C., ex frass & litter, coll. event no. 0 142 1/17-B: 1-L 5-N (in 75% ethanol), OSAL 0 128354; 29-Jan-2001, Gerdeman, B. S., Garcia, R. C., ex frass/litter with fungi, coll. event no. 0143-A: 1-L, OSAL 0 118721; 29-Jan-2001, Gerdeman, B. S., Garcia, R. C., ex frass/litter with fungi, coll. event no. 0148-A: 1-L, OSAL 0 118722; 1- PN, OSAL 0 118723; 1- PN, OSAL 0 118724; 9-Apr-2001, Garcia, R. C., ex litter mixed with millipede frass w fungus, coll. event no. 0132-B: 1-L 1-N (in 75% ethanol), OSAL 0 128360; 7-May-2001, Garcia, R. C., ex fresh frass under decomposing log, coll. event no. 0153-A: 1- DN (in 75% ethanol), OSAL 0 128372; 7-May-2001, Garcia, R. C., ex millipede frass & litter, coll. event no. 0154-B: 1- PN (in 75% ethanol), OSAL 0 128367; 7-May-2001, Garcia, R. C., coll. event no. 0173-B: 2-L 2-N (in 75% ethanol), OSAL 0 128362; 2-Jun-2001, Garcia, R. C., ex old frass with fungus & litter, coll. event no. 0155-A: 1- DN (in 75% ethanol), OSAL 0 128356; 2-Jun-2001, Garcia, R. C., ex mix of old and new litter, coll. event no. 0157-A: 1- DN (in 75% ethanol), OSAL 0 128370; 2-Jun-2001, Garcia, R. C., coll. event no. 0158-B: 2-N (in 75% ethanol), OSAL 0 128358; 14-Jul-2001, Garcia, R. C., ex mix old & new frass and litter near decomposing log, coll. event no. 0142-D: 1-L 1-N (in 75% ethanol), OSAL 0 128371; 14-Jul-2001, Garcia, R. C., ex fresh and old frass with fungus & litter near base of tree, coll. event no. 0150-C: 1-N (in 75% ethanol), OSAL 0 128365; 14-Jul-2001, Garcia, R. C., ex mix of old and new frass with fungus & litter, coll. event no. 0159-A: 1- DN (in 75% ethanol), OSAL 0 128364; 14-Jul-2001, Garcia, R. C., ex old frass with fungus & litter near base of tree, coll. event no. 0160-B: 1-L 2-N (in 75% ethanol), OSAL 0 128366; 18-Aug-2001, Garcia, R. C., coll. event no. 172-A: 1-N (in 75% ethanol), OSAL 0 128355; 18-Aug-2001, Garcia, R. C., ex mix of old and new litter, coll. event no. 0174-C: 1-N (in 75% ethanol), OSAL 0 128369; 19-Aug-2001, Garcia, R. C., coll. event no. 0170: 3-L (in 75% ethanol), OSAL 0 128361; 9-Feb-2009, Garcia, R. C., ex millipede frass with fungi at base tree, coll. event no. 0145-A: 1-N (in 75% ethanol), OSAL 0 128357. College, 14.1642 N 121.2415 E, 14-Mar-2000, Garcia, R C, ex leaf litter & fungus at base of tree, coll. event no. 0149-B: 1- DN, OSAL 0 0 53228; 1- DN, OSAL 0 0 53227; 1-L, OSAL 0 0 53229; 1- PN, OSAL 0 0 53225; 1- PN, OSAL 0 0 53226. Same locality, 21-Mar-2000, Gerdeman, B. S., Garcia, R. C., ex unidentified millipede, coll. event no. BSG 00-0321-1: 1-E, OSAL 0 0 53224; 1-F, OSAL 0 0 53221; 1-F, OSAL 0 0 53222; 1-M, OSAL 0 0 53223; 2- Ad (in 75% ethanol), OSAL 0 103369. Luzon Is., Laguna prov., Mount Makiling, 4 km SE Los Ba��os, 14.1358 N 121.1901 E, 8-Mar-2000, Gerdeman, B. S., Garcia, R. C., ex unidentified millipede, coll. event no. BSG 00-0308-1: 1-F, OSAL 0 0 53271. Luzon Is., Quezon prov., nr. ranger station, Famy & Real, Quezon/Laguna Landgrant, 320m, 14.4781 N, 121.5321 E, 20-Jan-2016, Garcia, R. C., Naredo, J. C., Klompen, H., ex Trigoniulidae (Spirobolida), coll. event no. HK 16-0120-7: 1-F, OSAL 0 128336,; 1-M, OSAL 0 128337; 4-F 5-M (in 95%
Published as part of Gerdeman, Beverly S., Garcia, Rufino C., Herczak, Andrew & Klompen, Hans, 2018, Philippinozercon, a new genus of Heterozerconidae (Parasitiformes: Mesostigmata), with description of all active instars, pp. 7-22 in Zootaxa 4540 (1) on pages 11-21, DOI: 10.11646/zootaxa.4540.1.4, http://zenodo.org/record/2616196
{"references":["Gerdeman, B. S. & Klompen, H. (2003) A new North American heterozerconid, Narceoheterozercon ohioensis, n. gen., n. sp., with first description of immatures of Heterozerconidae (Acari: Mesostigmata). International Journal of Acarology, 29 (4), 351 - 370. https: // doi. org / 10.1080 / 01647950308684352"]}
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