Mucotergum nigrum Ripka

Mucotergum nigrum Ripka sp. n.

( Figs 1 –4)

Diagnosis. Bodyspindleform; prodorsalshieldwithgranules, weak shieldpatterniscomposedoftwofaintincomplete, sinuateadmedianlines beginningatposteriormarginoftheshield, twoincompletesubmedianlines, medianlineabsent; tuberclesofscapularsetae sc andsetae sc absent, dorsal palpgenualsetae d simple. Prodorsalshieldanddorsalsemiannulicovered bymucus- likesubstance. Subequalandmicrotuberculatedorsalandventral semiannuli. CoxisternaeIandIIandlegsIandIIwithallstandardsetae; em- podiumentire, 7–8-rayed; femalegenitalcoverflapdividedintwoparts, with differentornamentation. Caudallobesnormalinsize, coneshaped, andorna- mentedwithseverallongitudinalridgesventrallyandlaterally.

Description. Female (n = 11). Bodyshinygreytoblack, spindleform, curved, 202 (153–210), 64 (60–72) wide, 72 (60–73) thick. Prodorsalshieldanddorsalannulicovered bymucus- likesubstance. Gnathosomalarge 46 (39–46), abruptlybentdownnearbase, cheliceraecurvedandbentdown 40 (33–42), pedipalpsattenuate, withpedipalpcoxalse- tae ep present, dorsalpalpgenualsetae d 4 (4–5), simple; distinctcheliceralretainer 2 (2–3). Prodorsalshield 52 (46–56), 71 (65–72) wide, semicircular; withashortandroundedfrontal lobe 3 (2–4); shieldornamentationweak, composedoftwofaintincomplete, sinuateadme- dianlinesbeginningatposteriormarginoftheshield, twoincompletesubmedianlines, medianlineabsent; sparselydashesandgranulesontheprodorsalshield. Tuberclesof scapularsetae sc andsetae sc absent. Finegranuleslaterallyinrowsbetweenshieldmargin anddorsalcoxaeoflegsIandII, andondorsalcoxae.

Legswithallusualsegmentsandsetaepresent. LegI 42 (37–45), femur 16 (14–17), owingtoatransversalridgeventrallyandlaterallyseeminglytwo- segmentedandwith finegranules, basiventralfemoralseta bv 16 (15–19), genu 5 (5–6), antaxialgenualseta l ″ 36 (28–37) closetothedistalend, tibia 10 (8–11), paraxialtibialseta l ′ locatedat ⅔ (⅔–¾) fromdorsalbase, 5 (5–7), tarsus 6 (5–7), paraxial, unguinaltarsalseta u ′ 7 (6–7), solenidion ω 10 (8–10), blunt, curved, empodiumsimple, 9 (8–10), 8-rayed (7–9), somespecimenswith asymmetrical empodium (7/8; 8/9). Leg II 38 (33–40), femur 15 (13–16) with fine granules ventrally, basiventralfemoralseta bv 21 (20–27), genu 5 (4–6), antaxialgenualseta l ″ 10 (10–13), veryfine, tibia 9 (7–10), tarsus 6 (5–7), paraxial, unguinaltarsalseta u ′ 5 (4–6), so- lenidionω 10 (9–10) subequalwithsolenidionωonlegI, blunt, curved, empodiumsimple, 8 (7–9), 7-rayed (7–8), somespecimenswithasymmetricalempodium (7/8). Longitudinal ridgesdorsallyandlaterallyonfemoraIandII. Distinctspinulesdistallyonfemora, genua andtibiaeonbothlegpairs.

CoxisternaeIandIIornamentedwithgranulesandshortlines; anterolateralsetae on coxisternum I, setae 1b 11 (10–13), tubercles setae 1b 15 (13–19) apart, proximal setae on coxisternum I, setae 1a 24 (20–27), tubercles setae 1a 8 (8–10) apart, proximal setae on coxisternumII, setae 2a 29 (26–42), tuberclessetae 2a 24 (23–31) apart, withcurvedlines. Subcapitularplateround, withmanyfinegranules. Prosternalapodeme 6 (6–7). Coxigeni- talareawith 7–8 microtuberculateannuli.

Opisthosomawith 64 (56–65) dorsal, 66 (60–69) ventralsemiannuli. Dorsalsemian- nuliwithpointedmicrotuberclesonrearannularmargin. Onventralsemiannulithemicro- tuberclesarepointedclosetotherearannularmargin, exceptforthe 8–10 ventralsemian- nulifromcaudallobes, whichareelongateandlinear. Opisthosomalsetae c2 57 (30–62), on annulus 9 (9–12), 42 (40–53) apart; opisthosomal setae d 79 (51–79), on annulus 22 (20–26), 35 (33–43) apart; opisthosomal setae e 65 (45–65), on annulus 41 (38–44), 25 (23–28) apart; opisthosomal setae f 37 (35–40), on annulus 58 (53–62), or 7 (7–9) from the rear, 19 (18–26) apart, all very fine at apex. Opisthosomal seta h2 85 (85–98), 8 (8–10) apart; seta h1 absent. Caudallobesnormalinsizeandconeshaped, ornamentedwith 11–14 longitudinalridges ventrallyandlaterally.

Genitalplate 22 (15–22), 24 (23–25) wide, amoderatedistancebehindcoxae, notap- pressedtocoxae. Femalegenitalcoverflapdividedintwoparts, anteriorpartwithirregu- leg I, LO = lateral view of annuli, PM = lateral view of posterior opisthosoma.

larshortridges, dashesandlinesofgranules, oronlydashesandgranules; posteriorly 10–14 ridges; coxisternal III setae 3a 23 (22–31), 19 (18–20) apart. Male (n = 2). Similartothefemale, shinygreytoblack, spindleform, 163–170, 57 wide,

60 thick. Prodorsalshieldanddorsalannulicoveredbymucus- likesecretion. Gnathosoma 35–37, pedipalpsattenuate, dorsalpalpgenualsetae d 2–3, simple; distinctcheliceralre- tainer 1–2. Prodorsalshield 47–49,60–63 wide, semicircular; withashort, bluntlyrounded frontallobe 3; theshieldornamentationweak, composedoftwofaintincomplete, sinuate admedianlinesbeginningatposteriormarginoftheshield, twoincompletesubmedian lines, medianlineabsent; sparselydashesandgranulesontheprodorsalshield. Tubercles of scapular setae sc and setae sc absent. Fine

granuleslaterallyinrowsbetweenshield marginanddorsalcoxaeoflegsIandII, and ondorsalcoxae.

Legswithallusualsegmentsandse-

tae present. Leg I 32–33, femur 12–13, due toatransversalridgeventrallyandlater-

allyseeminglytwo- segmentedandwithfine

granules, basiventralfemoralseta bv 16–17,

genu 5, antaxialgenualseta l ″ 25–29 closeto thedistalend, tibia 7–8, paraxialtibialseta l ′

locatedat ⅔–¾ fromdorsalbase, 7–8, tarsus

6, paraxial, unguinaltarsalseta u ′ 5, solen-

idionω 9, blunt, curved, empodiumsimple,

7, 7-rayed (7–8). Leg II 30–31, femur 12–13;

basiventralfemoralseta bv 17–18, ventrally

withfinegranules, genu 5, antaxialgenual seta l ″ 7–8 very fine, tibia 6, tarsus 5, parax-

ial, unguinaltarsalseta u ′ 5, solenidionω 9

subequalwithsolenidionωonlegI, blunt,

curved, empodiumsimple, 6, 6-rayed (5–6).

LongitudinalridgesdorsallyonfemoraI andII. Distinctspinulesdistallyonfemora,

genuaandtibiaeonbothlegpairs.

CoxisternaeIandIIornamentedwith

granulesandshortlines; anterolateralsetae oncoxisternumI, setae 1b 12, tuberclessetae

1b 13 apart, proximal setae on coxisternum I,

setae 1a 15, tubercles setae 1a 8 apart, proxi-

mal setae on coxisternum II, setae 2a 35, tu-

berclessetae 2a 20 apart, withcurvedlines.

Subcapitularplateround, withmanyfine

granules. Prosternalapodeme 5. Coxigenital areawith 7–8 microtuberculateannuli.

Opisthosoma with 56–58 dorsal, 63–64

Figs 2–4. Mucotergum nigrum Ripka sp. n.: ventralsemiannuli. Dorsalsemiannuliwith

2 = ventralaspectoffemale, 3 = dorsalas- pointedmicrotuberclesonrearannularmar-

pectofprobablyfemale, 4 = ventralaspect gin. Onventralsemiannulithemicrotuber-

ofopisthosomaoffemalewithcaudallobes cles are pointed close to the rear annular

(SEMmicrographsbyL. Szabó).

margin, exceptforthe 5–6 ventralsemiannulifromcaudallobes, whichareelongateand linear. Opisthosomal setae c2 28, on annulus 11, 40 apart; opisthosomal setae d 48, on an- nulus 22, 29 apart; opisthosomal setae e 40, on annulus 38, 22 apart; opisthosomal setae f 25, on annulus 56, or 7–8 from the rear, 19 apart, all very fine at apex. Seta h1 absent. Caudallobesnormalinsizeandconeshaped, ornamentedwith 11–14 longitudinalridges ventrallyandlaterally.

Genital part 14, 20 wide, not appressed to coxae. Coxisternal III setae 3a 22–23, 18 apart.

Nymph (n = 1). Similartothefemale, shinygrey, spindleform, 170, 70 thick. Gnatho- soma 40. Prodorsalshield 45, 53 wide. Tuberclesofscapularsetae sc andsetae sc absent. Legswithallusualsegmentsandsetaepresent. LegI 28, femur 11, genu 4, antaxialgenual seta l ″ 22, tibia 6, paraxialtibialseta l ′ locatedat ½ fromdorsalbase, 4, tarsus 4, solenidion ω 6, slightlycurved, blunt, empodiumsimple, 6, 6-rayed. LegII 25, femur 9, basiventral femoralseta bv 9, genu 3, antaxialgenualseta l ″ 7, veryfine, tibia 6, tarsus 5, solenidionω 7, slightlycurved, blunt, empodiumsimple, 6, 6-rayed.

ProximalsetaoncoxisternumI, 1a 12. Opisthosomawith 52 dorsal, 52 ventralsemi- annuli. Microtuberclesfinepointsclosetotherearannularmarginsdorsallyandventrally. Opisthosomal setae d 35, on annulus 19; setae e 28, on annulus 31; setae f 20, on annulus 46, or 6 fromtherear. Setae h1 absent. Caudallobesnormal. CoxisternalIIIsetae 3a 15.

Larva: notseen.

Hostplant. Cockbamboo, Phyllostachysiridescens C.Y. Yao & S.Y. Chen ( Poaceae : Bambuseae ).

Relationtothehostplant. Thisvagrantmitewasfoundsparselyonlowersideof leaves. Leafdiscolorationandslightyellowingwereobserved.

Locality. Szada, PestCounty (CentralHungary), 47°38’9.5” N, 19°20’3.2” E, 260 m elev. Thehostgrowsinaprivategardenofthethirdauthor.

Typematerial. Holotypefemalecircledwithblackinkamong 12 paratypefemales and 1 femaleof Abacarusturulae Ripka, 2011 ononeslide, 15 November 2013, slide # 1333a, coll. A. Neményi. Paratypes: 11 femalescollectedfromthesamelocalityanddatemounted onslide # 1333c, coll. A. Neményi , 6 femalesand 1 malecollectedfromthesamelocalityon 16 September 2013, fromundersideofleaves, mountedonslide # 1332 K; coll. A. Neményi intheseniorauthor’ scollectiondepositedintheDepartmentofPestManagementDevelopmentandCoordination, DirectorateofPlantProtection, SoilConservationandAgri- environment, NationalFoodChainSafetyOffice, Budapest, Hungary. Thenewspecies wasfoundtogetherwiththespecimensof Abacarusturulae Ripkacoveredwithwaxplates. A. turulae wascollectedfromtheundersideoftheleaves, amonghairsnearthemidrib, closetotheleafbase .

Etymology. Thespecificname, nigrum , isderivedfromtheLatin‘ nigrum ’, meaning blackishordark, relatingtotheuncommoncolourofthemite.

Differentialdiagnosis. Thenewspecieshereindescribedissimilarto Asetacuslinderae Wang, WeietYangdescribedfrom Lindera sp. (Lauraceae) (WANg etal. 2010). Thescapulartuberclessetaheadofrearshieldmargin, prodorsalshieldsculpturedwithgranulesand 12 irregularlines, thegenital coverflapsculpturedwithbasal 23 anddistal 26 longitudinalridges. Ithas 6-rayedempodium, andseta h1. Thebasiventralfemoralsetaeabsentonleg I and leg II. Whereas characters of Mucotergum nigrum Ripka gen. et sp. n. arethetuberclesofscapularsetae sc andsetae sc absent, the 7–8-rayedem- podium, irregularshortridges, dashesandlinesofgranules, oronlydashes andgranulesanteriorly, and 10–14 ridgesposteriorlyongenitalcoverflap, pointedmicrotuberclesonannuli, presenceofbasiventralfemoralsetae bv onbothlegpairs, seta h1 absent, andespeciallymucus- likesecretiononpro- dorsalshieldanddorsalsemiannuli. Caudallobesnormalinsizeandcone shaped, andornamentedwithlongitudinalridgesventrallyandlaterally. Its hostplantis Phyllostachysiridescens, leafdiscolorationoccurred.