Diptilostatus nudipalpus Flechtmannn.

Flechtmann, Carlos H. W., De, Gilberto J. & Moraes, 2003, New genus and species of eriophyid mites (Acari, Eriophyidae) from Myrtaceae in Brazil, with notes on damages caused by Aculus pitangae Boczek & Davis, Zootaxa 153, pp. 1-10 : 7-10

Diptilostatus nudipalpus Flechtmannn. sp. ( Fig. 3 )

FEMALE (n= 6) ­ Body robust, spindle shaped, whitish when alive; 167 (165­220), 84 (70­94) wide. Gnathosoma: projecting down; basal seta 4 (4­5); antapical setae absent in 24 females examined; chelicerae 57 (55­60). Prodorsal shield 34 (29­37), 77 (61­76) wide; shield tubercles present, 22 (21­23) apart, scapular setae (sc) missing. Shield design with admedian, submedian and transverse lines as in Fig. 3 D. Legs with all usual segments present; tibia I, genu II and femora I and II setae missing. Leg I 35 (35­36); femur 14 (12­15), ventral proximal half granulated, femoral seta (bv) missing; genu 6 (4­6), genual seta (l") 46 (44­46) on a large tubercle extending like a hood over dorsodistal half of femur; tibia 4 (4), tibial seta (l') missing; tarsus 12 (10­12), solenidion 6 (6­8), strongly knobbed, straight to slightly curved, empodium divided, each branch 5­rayed, dorsal seta (ft') 32 (31­33), lateral seta (ft") 33 (32­34), unguinal seta (u') 5 (5­7). Leg II 30 (28­33); femur 11 (11­12), bv missing; genu 2 (2­3), l" missing; tibia 3 (3­4), with a distal spine; tarsus 9 (8­10), solenidion knobbed, 7 (6­7), empodium 9 (8­9), divided, each branch 5­ rayed; ft' 10 (8­10), ft" 26 (26­30), u' 4 (4­6). Coxigenital area: coxae granulated, touching medially without indication of a sternal line. Coxa seta I (1b) 13 (10­14), 12 (11­14) apart; coxal seta II (1a) 20 (15­22), 11 (11­13) apart; coxal seta III (2a) 36 (36­51), 31 (28­ 34) apart. Coxigenital area with 10 (10­12) annuli, microtuberculate. Genitalia 40 (38­40) wide, 21 (21­18) long; genital seta (3a) 6 (5­9); epigynium with 14 (12­16) irregular longitudinal/radial lines distally and with many short dashes basally. Opisthosoma with a faint mediodorsal furrow, with a short median ridge on its anterior end. Lateral seta (c2) 31 (31­36), on annulus 1 (1) counting from genitalia rear margin; ventral seta I (d) 40 (broken) (66­80), 46 (44­51) apart, on annulus 15 (11­16); ventral seta II (e) 48 (48­60), 30 (27­33) apart, on annulus 34 (29­36); ventral seta III (f) 29 (27­29), 30 (26­30) apart, on annulus 54 (46­55) or 10 (10­11)th from rear. Total ventral annuli 63 (55­65), microtuberculate; total dorsal annuli 72 (72­78), with irregularly spaced minute pinlike structures (excretory ducts of glands? tiny microtubercles?). Caudal seta (h2) 61 (broken) (69­75); accessory seta (h1) minute.

MALE (n = 4) ­ Smaller than female, 135­154, 70­74 wide. Gnathosoma: basal seta 3­4; antapical seta missing in 6 specimens examined; chelicerae 45­46. Prodorsal shield 28­31, 53­58 wide; tubercles 18­20 apart. Legs: leg I 30­32; femur 11­13; genu 3; tibia 4; tarsus 9­10, solenidion 6­7, empodium divided, 7­8, 5­rayed, ft' 25­26, ft" 26­28, u' 4­5. Leg II 25­27; femur 11­12; genu 2­3; tibia 3­4; tarsus 7­9, solenidion 5­7, empodium 6­8, 5­rayed, ft' 6­8, ft" 23­25, u' 4­5. Coxigenital area: 1b 9, 9­11 apart; 1a 14­15, 9­10 apart; 2a 33­37, 22­26 apart. Coxigenital area with 9­11 annuli, microtuberculate. Genitalia granulate, 23­25 wide, 15­18 long, 3a 6­8. Opisthosoma: c 2 24­28, on annulus 1; d 50­65, 33­38 apart, on annulus 10­12; e 45­48, 23­26 apart, on annulus 26­29; f 25­26, 22­25 apart, on annulus 41­46 or 9th from rear. Total ventral annuli 50­55; total dorsal annuli 55­ 61; h2 54­55; h1 minute.

TYPE MATERIAL ­ Female holotype, 23 female and 6 male paratypes, from Euge­

nia uniflora L. ( Myrtaceae ), "pitanga", Piracicaba, São Paulo, Brazil (22° 40' 32" S, 47° 38' 00" W), 08 July 2002, coll. C.H.W. Flechtmann, on 12 microscopic preparations.

RELATION TO HOST ­ vagrant on the lower leaf surface; no visible damage.

ETYMOLOGY ­ The specific designation, nudipalpus , from the Latin, nudus, bare, refers to the absence of the antapical seta on the palp.

Figures

FIGURE 3. Diptilostatus nudipalpus Flechtmann n. g., n. sp. CGF, coxigenital area of female; D, dorsal aspect of female; Ep, epigynium of a paratype female; GM, male genitalia (enlarged); IGF, internal genital structures of female; L, lateral aspect of female; L 1 DL, dorsolateral aspect of leg I (enlarged); L 1 VL, ventrolateral aspect of leg I (enlarged); L 2, leg II (enlarged).