Two new genera and two new species of eriophyoid mites (Acari: Eriophyoidea) from North Bengal, India Chakrabarti, Samiran Sur, Surajit Roy, Sourav Sarkar, Sanjay Zootaxa 2017 4236 1 172 182 [151,441,1253,1279] Magnoliopsida Betulaceae Propeaciota Plantae Fagales 3 175 Tracheophyta species genusetosis sp. nov.   Diagnosis.Distinct 1lateral and broad medio-longitudinal shallow trough flanked by furrows on either side till end of dorsal opisthosoma, admedian lines on prodorsal shield distantly apart and epigynum with 7 longitudinal scorings, each dorsal annulus laterally meeting almost 4 ventral annuli.  FEMALE ( holotype): Body fusiform, white, 135 ( 135–165 in 13 paratypes) long, 59 (54–59) wide. Gnathosoma 18 (17–20) long, almost straight with pedipalp coxal seta 4 (4–5) long. Prodorsal shield 44 (38–44) long, 63 (48–63) wide, almost triangular with anterior acute lobe; admedian lines 28 (25–28) apart, sinuate, reaching base of dorsal tubercles and effaced anteriorly, median and submedian lines not discernible; dorsal tubercles on rear shield margin, 3 long and 25 (25–28) apart, scapular seta sc4 (4–5) and directed posteriorly. Leg I from base of trochanter 26 (26–32); femur 11 (11–17), basiventral femoral seta bv6 (6–8); genu 4 (4–7), antaxial genual seta lʺ17 (12–18); tibia 6 (4–6) without seta; tarsus 5 (4–5); paraxial fastigial tarsal seta ftʹ17 (14–17), antaxial fastigial tarsal seta ftʺ16 (13–16); tarsal solenidion ωcurved, knobbed, 6 (6–10); tarsal empodium em 5 (3–6), 4-rayed. Leg II from base of trochanter 26 (26–32); femur 11 (11–16), basiventral femoral seta bv7 (4–7), genu 5 (5–8), antaxial genual seta lʺ4 (4–10); tibia 5 (3–5) without paraxial tibial seta lʹ; tarsus 5 (4–7), paraxial fastigial tarsal seta ftʹ17 (15–18), antaxial fastigial tarsal seta ftʺ4 (3–5), paraxial unguinal tarsal seta uʹabsent, tarsal solenidion ωcurved, knobbed 5 (4–6); tarsal empodium em 5 (4–5) with stout base and 4-rayed. Coxae I 14(10–14), connate with sternal line, base of coxae I with few granules, 1btubercles and setae present, setae 1b5 (5– 7) and 9 (9–10) apart, 1atubercles with setae present, setae 1a15 (11–15) and 6 (5–7) apart, distance between setae 1aand 1b8 (8–9); coxae II 14(12–15) and separated from setae 2a26 (19–26) and 20 (18–20) apart. Opisthosoma with 1 lateral ridge on either side and broad medio-longitudinal shallow trough flanked by 1 deeper furrow on either side and extending almost up to end of opisthosoma, with 20 (19–20) dorsal annuli and 49 (49–51) ventral annuli, each dorsal annulus either flat or little depressed dorsally and with elongated wax secreting glands, without microtubercles or striations on dorsal surface; ventral annuli with small striations; seta c218 (12–18) and present on annulus 7 (7–8), seta d19 (13–19) on annulus 16 (16–17), seta e7 (5–7) on ventral annulus 26 (24–26), seta f19 (19–21) on ventral annulus 43 (42–44), seta h1absent and seta h230 (28–33). Epigynium elliptical, 12 (10–14) long, 21 (21–24) wide, with 7 longitudinal scorings, seta 3a8 (8–9), 2–3 oblique lines on upper half of epigynium; 5 ventral annuli present between coxae II and epigynium. Internal genitalia with anterior apodeme curved downward. MALE: Not found.     Typematerial. Holotype: Female(marked) on slide (no.1805/55/2015),  INDIA: West Bengal, Darjeeling, Rishop, 27˚09’N, 88˚58’E, altitude  2591m.  18 October 2015from  Acersp. ( Aceraceae), coll. S. Chakrabarti. Paratypes: 13 females on 4 slides (nos. 1806–1809/55/2015); collection data same as in holotype.  Relation to host.This white and fusiform mite occurs on under surface of leaf as leaf vagrant.   Etymology.The specific epithet is neuter gender and is derived from Latin word genu (knee, part of the leg) + seta (bristle) used here as an objective ( sis) referring to its presence on genu of leg II.   Differential diagnosis.This new species differs from  Propeaciota secundum( Flechtmann et al., 1995)in having one lateral ridge and shape of the median part of the opisthosoma, admedian lines situated laterally apart, dorsal tubercles and scapular setae directed posteriorly, coxae with granulations at their bases. But in the case of  P. secundumthe following characters are found: two lateral ridges on each side, dorsum of the opisthosoma flat or little elevated, paired admedian lines on rear two third of the shield, dorsal tubercles and scapular setae laterally divergent, outwardly directed and coxae smooth. 1434661005 2015-10-18 S. Chakrabarti India Female 2591 Rishop Darjeeling 4 176 2 West Bengal holotype