Cenaca decorata, Flechtmann, Carlos H. W. & Etienne, Jean, 2002

Flechtmann, Carlos H. W. & Etienne, Jean, 2002, New records of plant mites (Acari, Acaridae, Tetranychidae) from Guadeloupe and Marie Galante with descriptions of five new eriophyid species, Zootaxa 47, pp. 1-16 : 12-13

Cenaca decorata n.sp. ( Fig. 5 )

DIAGNOSIS ­ Four­rayed empodia; caudal dorsal opisthosomal annuli with minute microtubercles on rear margin; prodorsal shield with complete median

and admedian lines.

FEMALE ­ (n = 3). Wormlike, 146 (156­185), 49 (53) wide. Gnathosoma projecting downwards, 16 (17); basal seta 3 (2­3); antapical seta missing; chelicerae 13 (12­15). Prodorsal shield broad, anteriorly rounded, 19 (18­19); design consisting of complete median and admedian lines, one pair of partial submedian lines and a transverse, arched, posterior line; no anterior lobe. Dorsal tubercles near rear shield margin, 15 (14­18) apart, directing scapular setae (sc) divergently to rear; seta 24 (22­25). Legs lacking femur I and tibia I seta. Leg I 20 (21­23); femur 8 (9­10), femoral seta (bv) absent; genu 2 (3), genual seta (l") 13 (14­15); tibia 4 (4), tibial seta (l') absent; tarsus 6 (5), solenidion 7 (6), empodium 5, 4­ rayed, dorsal seta (ft') 11 (10), lateral seta (ft") 15 (17­18), unguinal seta (u') 3 (3). Leg II 18 (19­22); femur 9 (7), bv 8 (7­9); genu 2 (2), l" 10 (9­12); tibia 2 (3); tarsus 4 (4­5), solenidion 8 (7), empodium 6 (5), 4­rayed, ft' 3 (3), ft" 18 (19­20), u' 2 (2). Coxae I fused, with a very thin sternal line. Coxal seta I (1b) missing. Coxal seta II (1a) 16 (14­15), 8 (7) apart; coxal seta III (2a) 23 (28­31), 16 (13­18) apart. Coxisternal area with coarse granules. Genitalia 17 (16­19) wide, 10 (9­11) long; epigynium distally smooth, basally with coarse granules, partly in transverse irregular lines. Genital seta (3a) 5 (7­8). Opisthosoma evenly arched in cross section; annuli continuous dorsoventrally. Lateral seta (c2) 17 (14­16), on annulus 3 (2) from genitalia rear margin. Ventral seta I (d) 33 (31­42), 30 (29­31) apart, on annulus 14 (13­16); ventral seta II (e) 28 (31­37), 19 (17­18) apart, on annulus 29 (32); ventral seta III (f) 13 (14­15), 13 (12­14) apart, on annulus 49 (53­55) or 5th from rear. Total ventral annuli 53 (57­59), microtuberculate. Total dorsal annuli 67 (70­71), with prominent, oval microtubercles except on caudal 8 (9­10) annuli, whose microtubercles are minute. Caudal seta (h2) 58 (51); accessory seta (h1) 2 (2).

MALE ­ (n =1). Smaller than female, 101, 37 wide. Gnathosoma 13; basal seta 2; apical seta missing; chelicerae 11. Prodorsal shield 18, 24 wide. Sc 17, 13 apart. Leg I 19; femur 7, bv missing; genu 2, l" 12; tibia 2, l' missing; tarsus 4, solenidion 6, empodium 4, 4­rayed, ft' 7, ft" 11, u' 2. Leg II 17; femur 7, bv 6; genu 2, l" 7; tibia 2; tarsus 4, solenidion 8, empodium 4, 4­rayed, ft' 3, ft" 13, u' 2. Coxal seta II (1a) 11, 7 apart; 2a 18, 14 apart. Genitalia 15 wide, 5 long; 3a 6. Opisthosoma: c2 14, on annulus 2; d 28, 26 apart, on annulus 10; e 19, 16 apart, on annulus 23; f 11, 11 apart, on annulus 41 or 5th from rear. Total ventral annuli 45, microtuberculate; total dorsal annuli 56, microtuberculate, as in female. Caudal seta (h2) 30; h1 2.

TYPE MATERIAL ­ Holotype female, four female, one male paratypes, from Beurreria succulenta (Boraginaceae) , Bouillante, Pigeon, Guadeloupe, coll. J. Etienne, 2 Sept. 2001, on two microscopic preparations in the collection of Departamento de Entomologia, Fitopatologia e Zoologia Agrícola, Universidade de São Paulo, ESALQ, Piracicaba, São Paulo, Brazil.

RELATION TO HOST ­ vagrant on lower leaf surface.

ETYMOLOGY ­ The specific designation, decorata , is derived from the Latin decoro, ­atus, meaning ornamented, and refers to the elaborate prodorsal shield design.

REMARKS ­ C. decorata , the third known species in the genus, differs from the type species, C. syzygioidis Keifer, 1972 and from C. dorestei Boczek & Oleczek, 1987 in presenting prodorsal shield design (absent in the type species; only a few broken submedian lines in C. dorestei ) and, in the caudal dorsal opisthosomal annuli with minute microtubercles (caudal dorsal annuli smooth in C. syzygioidis , dorsal annuli evenly beset with elongate, large microtubercles in C. dorestei ). In the new species the empodia are 4­rayed as in the type species, but, are 5­rayed in C. dorestei .

Figures

FIGURE 5. Cenaca decorata n. sp. AD, anterior dorsal aspect; CD, caudal dorsal aspect; CGF, coxigenital area of female; E, empodium; GM, genitalia of male; L 1, leg I; L 2, leg II.