Neopilizetes thoracicus, Amorim & Norton & Oliveira, 2018

Amorim, Saulo S., Norton, Roy A. & Oliveira, Anibal R., 2018, The Neotropical mite genus Neopilizetes (Oribatida: Galumnidae): redescription of N. neotropicus, rediagnosis of the genus, and descriptions of four new species, Zootaxa 4410 (3), pp. 567-599 : 574-580

Neopilizetes thoracicus n. sp.

( FIgS. 5–9 , TAbLE 1)

Diagnosis. ANTERIOR HALf Of NOTOgASTER WITH DEEP CENTRAL, LONgITUDINAL DEPRESSION, fORMED bY PAIR Of CENTRAL CRESTS. WITH 2–3 PAIRS Of TRANSVERSE LATERAL CRESTS ORIgINATINg fROM CENTRAL CRESTS AND RESEMbLINg ‘HUMAN THORACIC CAgE’ SCULPTURE; LATERAL CRESTS AbSENT IN POSTERIOR HALf Of NOTOgASTER; POSTEROLATERAL NOTOgASTRAL MARgIN ANgULARLY bENT VENTRALLY; LYRIfISSURES ih, im AND ips POSITIONED IN DORSAL fLAT AREA Of NOTOgASTER; POROSE AREAS A1 AND A2 fORMINg fOUR LARgE POSTERIOR PROTUbERANCES COVERED WITH THICK LAYER Of CEROTEgUMENT; SETAL PAIR p1 ON TWO LARgE TERMINAL PROTUbERANCES.

Etymology. THE SPECIES NAME ALLUDES TO THE NOTOgASTRAL SCULPTURINg, RESEMbLINg A HUMAN THORACIC CAgE.

Dimensions. BODY LENgTH (N=7) 338–383µM AND WIDTH 256–291µM.

Integument. MODERATELY COVERED WITH CEROTEgUMENT IN THE PRODORSUM AND VENTRAL REgION. DENSELY COVERED IN THE NOTOgASTER.

Prodorsum. MEDIALLY WITH LONgITUDINAL fLAT-TOPPED ( FIg. 5F ) CUTICULAR CRESTS, bETWEEN LEVELS Of ROSTRAL (ro) AND INTERLAMELLAR (in) SETAE, INTERRUPTED bY TRANSVERSE fLAW IN PROXIMAL THIRD; CRESTS Of LATERAL RETICULATION SLIgHTLY LOWER ( FIgS. 5A, F, G , 6D–F ). ROSTRUM WITH SMALL, SMOOTH, SUbRECTANgULAR MEDIAL PROjECTION bETWEEN INSERTIONS Of ROSTRAL SETAE ( FIgS. 5G , 6D ). ROSTRAL (ro), LAMELLAR (le) AND INTERLAMELLAR (in) SETAE DIRECTED MEDIALLY AND WITH SIMILAR LENgTHS, ~22µM ( FIgS. 5A, C, D, G , 6D–F , 7B ); ro THIN, LENgTH AbOUT 3/4 THEIR MUTUAL DISTANCE WITH fEW, bARELY VISIbLE bARbS; le THIN AND SMOOTH, LENgTH AbOUT 1/4 THEIR MUTUAL DISTANCE; in THICK, bARbED, LENgTH AbOUT 1/4 THEIR MUTUAL DISTANCE. SENSILLUS (ss) THICK, SHARP–TIPPED, WITH TWO PARALLEL SERIES Of bARbS OCCUPYINg ALMOST ITS ENTIRE EXPOSED LENgTH, ~120µM ( FIgS. 5A, B , 6A ).

Notogaster. CIRCULAR TO PENTAgONAL IN SHAPE IN DORSAL VIEW, WITH DEEP ARCH-LIKE POSTERIOR DEPRESSION fORMED bY TWO TERMINAL PROTUbERANCES ( FIgS. 5A , 6A ). POSTEROLATERAL MARgIN Of NOTOgASTER fLATTENED, VERTICAL bETWEEN SHARP ANgULAR bEND AND VENTRAL EDgE ( FIg. 7A ). ANTERIOR HALf Of NOTOgASTRAL WITH CENTRAL DEPRESSION fORMED bY PAIR Of LARgE LONgITUDINAL CRESTS; WITH 2–3 PAIRS Of LATERAL, TRANSVERSE CRESTS, MOSTLY CONNECTINg TO RESPECTIVE LONgITUDINAL CREST, fORMINg PATTERN RESEMbLINg ‘HUMAN THORACIC CAgE’. POSTERIOR HALf Of NOTOgASTER fLAT WITH fINE STRIAE LATERALLY ( FIgS. 6A–C ). PTEROMORPH WITH RADIALLY ORIENTED CRESTS ( FIgS. 5A , 6D , 7A, B ). NOTOgASTRAL SETAE (c2, la, lm, lp, h1, h2, h3, p1, p2 AND p3), RIgID AND SHORT, MOST Of THEM SIMILAR IN SHAPE TO in SETAE; SETA c2 SMOOTH, ~10µM; la, lm, lp, h1, h2 AND h3 fINELY bARbED, ~17–20µM; p1, p2 AND p3 SMOOTH, ~10µM, PAIR p1 ON LARgE TERMINAL PROTUbERANCES. LYRIfISSURES ih, im AND ips ObSERVED IN DORSAL VIEW AND ip ObSERVED IN LATERAL VIEW, ia AND im LARgER THAN OTHERS, ih AND ips CLOSE TO EACH OTHER, bETWEEN THE LEVELS Of LYRIfISSURE im AND SETA p3 ( FIg. 5A ). OPISTHONOTAL gLAND (gla) LOCATED bETWEEN LYRIfISSURES ih, im, ips, IN REgION Of SETAE p3 AND h3. OCTOTAXIC SYSTEM INCOMPLETE, COMPRISINg TWO PAIRS Of POROSE AREAS, A1 AND A2, EACH ON SEPARATE LARgE PROTUbERANCE COVERED WITH A THICK LAYER Of CEROTEgUMENT ( FIgS. 5A , 6A–C , 7A ).

Ventral region . COXISTERNUM IRREgULARLY TUbERCULATE; ANOgENITAL REgION WITH RAISED RIDgES fORMINg IRREgULAR MAzE. EPIMERAL SETATION 2 –0(1)–1–2 . SETAE 1 b, 2a, 3b, 4a AND 4 b RIgID, SMOOTH, ACUMINATE AND SHORT, ~4µM; 2a AbSENT IN MOST SPECIMENS; 1c REPRESENTED ONLY bY ALVEOLUS ( FIgS. 5H , 7D, E ). CIRCUMPEDAL CARINAE (cp) APPEARINg AS THICK LOW RIDgES ( FIg. 7C ). DISTANCE bETWEEN gENITAL AND ANAL APERTURES VARIES fROM AbOUT HALf TO SLIgHTLY SHORTER THAN LENgTH Of gENITAL PLATE, INDEPENDENTLY Of gENDER ( FIgS. 5H , 7C ). GENITAL PLATE COVERED WITH CEROTEgUMENT, APERTURE SUbqUADRATE, SLIgHTLY WIDER ANTERIORLY. GENITAL SETAE SIMILAR IN fORM TO EPIMERAL SETAE: g1 AND g2, ~10µM, INSERTED ON ANTERIOR MARgIN Of PLATE; g3, g4 AND g5, ALIgNED IN MIDDLE Of PLATE, g6 SIMILAR, bUT ON POSTERIOR MARgIN Of PLATE ~4µM ( FIgS. 5H , 7E ). AggENITAL SETA (ag) APPROXIMATELY IN MIDDLE Of DISTANCE bETWEEN ANAL AND gENITAL PLATES, SIMILAR TO EPIMERAL SETAE IN SHAPE, ~4µM. ANAL APERTURE WITH NEARLY PENTAgONAL SHAPE, WIDER POSTERIORLY; PLATES COVERED WITH CEROTEgUMENT; ANAL SETAE (an1, an2) SMOOTH, ACUMINATE, ~3µM; ADANAL SETAE (ad1, ad2, ad3) SMOOTH AND ACUMINATE, ~3µM. LYRIfISSURE iad PARALLEL TO LATERAL MARgIN Of ANAL PLATE ( FIgS. 5H , 7F ).

Gnathosoma. SUbCAPITULUM SMOOTH bUT DENSELY POROSE. TWO PAIRS Of ADORAL SETAE (or) SHORT, ~7µM; SETA a LONg, ~14µM; SETA h AND m SHORT, ~6µM ( FIgS. 5E , 7C, D ). CHELICERAE DENSELY POROSE bETWEEN LINE en AND bASE Of MOVAbLE DIgIT; SETAE cha AND C hb LONg AND bARbED, ~36 AND 26µM, RESPECTIVELY. TRägARDH'S ORgAN (trg) PARALLEL TO AXIS Of CHELICERA, ~35µM ( FIgS. 8B , 9A ).

Legs. TRIDACTYLOUS. NOT COVERED WITH CEROTEgUMENT; MOST ARTICLES SMOOTH, EXCEPT TROCHANTER III–IV AND fEMUR I–IV STRIATED. PRETARSI WITH LATERAL CLAWS THINNER THAN EMPODIUM ( FIgS. 8A, C, D, G ). SETAL fORMULAE (LEgS I–IV): TROCHANTER 1–1–1–1, fEMUR 4–4–2–2, gENU 3–3–1–2, TIbIA 4–4–3–3 AND TARSUS 20–15–15–12 ( TAbLE 1). LEg I fAMULUS (ε) SHORT, ~6µM, WITH EXPANDED TIP, INSERTED POSTEROLATERAL TO SOLENIDION ω1 ( FIg. 8F ). LYRIfISSURE ly AT bASE Of TARSUS, NEAR ARTHRODIAL MEMbRANE SLIgHTLY TO ANTIAXIAL SIDE. SOLENIDIA NUMbER, fORM AND DISTRIbUTION AS SHOWN IN TAbLE 1.

Material Examined. HOLOTYPE MALE AND 85 PARATYPES (8 MOUNTED ON SLIDES ENTIRE AND 12 DISSECTED, 15 MOUNTED ON A STUb fOR SEM AND 50 PARATYPES PRESERVED IN 70% ALCOHOL) COLLECTED ON 10–I–2008 AND 13 –VIII–2013 bY ANIbAL R. OLIVEIRA fROM SOIL –LITTER INTERfACE SAMPLES IN A CACAO PLANTATION AT UESC, ILHÉUS, BAHIA, BRAzIL , 14°47'49"S, 39°10'23"W. THE HOLOTYPE AND 35 PARATYPES ARE DEPOSITED IN THE ACAROLOgICAL COLLECTION AT UESC, 25 PARATYPES ARE DEPOSITED IN THE ACAROLOgICAL COLLECTION AT THE ESCOLA SUPERIOR DE AgRICULTURA “LUIz DE QUEIROz” ( ESALQ), UNIVERSIDADE DE SãO PAULO ( USP), PIRACICAbA, SãO PAULO, BRAzIL , AND 25 PARATYPES ARE DEPOSITED IN THE ACAROLOgICAL COLLECTION AT DEPARTAMENTO DE ZOOLOgIA E BOTâNICA, UNIVERSIDADE ESTADUAL PAULISTA ( UNESP), DZSJRP, SãO JOSÉ DO RIO PRETO, SãO PAULO, BRAzIL .

Figures

FIGURE 5. Neopilizetes thoracicus n. sp.: A) dorsal view; B) ss, sensillus; C) in, interlamellar seta; D) ro, rostral seta; E) subcapitulum; F) prodorsum crest in cross-section; G) prodorsum frontal view; H) ventral view (legs and gnathosoma removed).

FIGURE6. Neopilizetesthoracicus n. sp.:A) dorsalview; B) dorsolateralview; C) notogaster dorsal view; D) frontal view; E) prodorsum dorsal view presenting ro setae and crests; F) prodorsum dorsal view presenting in setae.

FIGURE7. Neopilizetes thoracicusn.sp.: A) lateral view;B) prodorsumlateral view and part of pteromorph; C) ventral view; D) subcapitulum and part of epimeral region; E) genital region and part of epimeral region; F) anal region, part of ventral region and ventral view of posterior portion of notogaster.

FIGURE 8. Neopilizetes thoracicus n. sp.: A) leg I antiaxial view; B) chelicera antiaxial view; C) leg II antiaxial view; D) leg III antiaxial view; E) palpantiaxial view; F) leg IV antiaxial view; G) region of seta ε (famulus) detail.

FIGURE 9. Neopilizetes thoracicus n. sp.: A) gnathosoma presenting palp and chelicerae in antiaxial view; B) palp tarsus detail; C) leg I antiaxial view; D) leg I tibia and tarsus detail; E) region of seta ε (famulus) detail; F) leg I tarsus and pretarsus detail.