Biscutulumnemus neotropicus, Lofego, Antonio C. & Feres, Reinaldo J. F., 2006

Lofego, Antonio C. & Feres, Reinaldo J. F., 2006, A new genus and species of tarsonemid mite (Acari: Tarsonemidae) from Brazil, Zootaxa 1299, pp. 45-55 : 47-55

publication ID	https://doi.org/ 10.5281/zenodo.173602
DOI	https://doi.org/10.5281/zenodo.6255811
persistent identifier	https://treatment.plazi.org/id/03D587E4-8061-FFEC-FEAF-FC9D32FBEF68
treatment provided by	Plazi
scientific name	Biscutulumnemus neotropicus
status	sp. nov.

Treatment

Biscutulumnemus neotropicus sp. nov.

( Figs. 1–12 View FIGURE 1 View FIGURE 2 View FIGURES 3 – 6 View FIGURE 7 View FIGURE 8 View FIGURES 9 – 12 )

Diagnosis

This species can be distinguished from other species of Tarsonemidae by the combination of characters given in the diagnosis for the genus and by description below.

Female (7 specimens measured).

Gnathosoma: ( Fig. 2 View FIGURE 2 ) slightly beaklike, length 33 (31–33), maximum width 24 (23–24); dorsal apodeme distinct. Setae ch 11 (11–12) and vm 11 (10–11) smooth; seta pp not seen. Palpus moderately long, with one small subterminal setae and terminal coneshaped structures. Pharynx fusiform 11 (10–12) long and 4 (3–4) wide at widest region.

Idiosoma ( Figs. 1 View FIGURE 1 and 2 View FIGURE 2 ): length 209 (194–222; holotype 218), width at level of c1 116 (105–133); prodorsal shield covering partially the gnathosoma. Stigma close and posterolateral to v1. Lengths of the setae: v1 19 (17–23), sc1 15 (14–16), sc2 36 (33–39), c1 12 (10–14), c2 22 (19–28), d 15 (13–17), e 14 (12–17), f 14 (11–17), h 14 (13–17). All setae smooth and setiform except sc1 which is capitate and with tiny spines. Distances between dorsal setae: v1–v1 23 (21–24), sc2–sc2 46 (42–48), v1 –sc2 28 (26–30), c1–c1 61 (54–67) c2–c2 94 (88–100), c1–c2 29 (27–32), d–d 51 (42–56), f–f 24 (18–29), e–f 23 (21–26), h–h 38 (36–42). Seta sc1 inserted anteriorly to sc2.

Coxisternal setae 1a 9 (8–10), near anterior extremity of prosternal apodeme; 2a 12 (12–13), near middle of apodeme II; 3a 13 (11–14), near anterior end of apodeme III; 3b 11 (8–12), on posterior end of apodeme IV. Apodeme I very reduced, not fused to prosternal apodeme, placed just near bases of trochanter I. Apodeme II not conspicuously fused to prosternal apodeme. Prosternal apodeme conspicuous from 1a to level of posterior end of apodeme II, but diffuse and widened from this point to half of distance to sejugal apodeme; the another half is conspicuous and weakly united to sejugal apodeme. Sejugal apodeme weakened on middle third and well developed laterally. Apodeme III extending diagonally from proximity of base of seta 3a to anterior margin of trochanter III; apodemes IV fused with each other and with poststernal apodeme, connected by an inner projection near anterior extremity, forming a Ushaped structure in this junction, from this junction it extends diagonally to base of seta 3b. Poststernal apodeme reduced, distinct just on region of fusion with apodeme IV. Coxisternal plates smooth. Tegula rounded and widened 8 (7–9) long and 13 (12–14) wide. Seta ps smooth.

Legs ( Figs. 3–6 View FIGURES 3 – 6 ): lengths (femur to tarsus): leg I 51 (47–56), leg II 48 (44–56), leg III 47 (44–53), leg IV 32 (30–33). Number of setae (solenidia in parentheses) on femur, genu, tibia and tarsus, respectively: leg I: 446(2)7(1), leg II: 3346(1), leg III: 1+345. Tarsal solenidion of tibiotarsus I 4 (4–6), stout, wider medially. Sensory cluster of tibia I complete, solenidion 5 (4–6), slender, capitate; solenidion 2 (2–3), robust, slightly capitate; famulus k 3; all those inserted on the same level. Seta d of tibia I 11 (11–12), smooth. Solenidion of tarsus II proximal 3 long, stout, wider medially; seta pl´´3 (3–4) spinelike. Seta d of tibia II 13 (11–14), smooth. Femorogenu IV 22 (21–23); tibiotarsus IV 10 (8–12). Length of leg IV setae: v´F 4, v´G 10 (9–11), v´Ti 17 (17–19) and tc´´82 (78–87); all setae smooth; v´Ti laminar.

Male: (3 specimens measured).

Gnathosoma: ( Fig. 8 View FIGURE 8 ) slightly beaklike, length 30 (30–31), maximum width 23 (21–24); dorsal apodeme conspicuous. Setae ch 11 (10–11) and vm 12 (11–12) smooth, seta pp not observed. Palpus short, bearing one small subterminal seta. Pharynx elongate, 10 (10–11) long and 4 (3–4) wide at widest region.

Idiosoma ( Figs.7 View FIGURE 7 , 8 View FIGURE 8 and 13 View FIGURE 13 ): length 165 (139–178), maximum width 95 (81–105). Prodorsal shield trapezoidal. Length of dorsal setae: v1 23 (21–24), v2 19 (17–22), sc1 50 (44–56), sc2 26 (22–28), c1 26 (22–28), c2 32 (27–36), d 24 (22–24), f 18 (17–19). All setae setiform and serrate. Distances between dorsal setae: v1–v1 11 (11–12), v2–v2 18 (17–20), sc1–sc1 30 (28–32), sc2–sc2 40 (39–41), v1–v2 12 (11–13), v2 –sc2 12 (11–13), sc1–sc2 7 (6–9), c2–c2 80 (74–83), c1–c1 66 (59–70), d–d 46 (43–48), c1–d 14 (11–17), c1–c2 33 (30–37), f–f 23 (22–26). Seta c1 closer to d than to c2, posterior to the latter. All dorsal shields with faint puncta.

Coxisternal seta 1a 11, in the middle of coxisternal plate 1, a little near to prosternal apodeme; seta 2a 11 (10–11), in the central region of coxisternal plate 2; seta 3a 14 (13–14), near anterior middle of apodeme III; seta 3b 13 (11–14), near middle of apodeme IV. Apodeme I fused to anterior end of prosternal apodeme; apodeme II slightly fused to prosternal apodeme. Prosternal apodeme conspicuous on anterior half and diffuse on posterior half. Sejugal apodeme absent. Apodemes III, IV and poststernal slightly fused on anterior extremity, enclosing the coxisternal plates III and IV. Poststernal apodeme bifurcate posteriorly, forming apodemes V. All ventral plates smooth.

Legs ( Figs. 9–12 View FIGURES 9 – 12 ): length (femur to tarsus): leg I 52 (44–56), leg II 52 (44–56), leg III 57 (49–62), leg IV 47 (39–52). Number of setae (solenidia in parentheses) on femur, genu, tibia and tarsus: leg I: 446(2)9(1), leg II: 3346(1), leg III: 1344. Solenidion of tarsus I 4 (3–4), stout, wider medially. Sensory cluster of tibia I complete, solenidion

3, capitate; solenidion 3, wider medially; famulus k 3, inserted at the same level of

and. Seta d of tibia I 12 (11–13), smooth. Solenidion of tarsus II proximal, 5 (4–6) long, stout, wider medially. Seta pl´´3, spinelike. Seta d of tibia II 12 (9–14), smooth.

Leg IV robust. Trochanter IV slightly wider than long, seta v´ smooth, 12 (11–12) long. Femorogenu IV, 30 (23–33) long and 26 (22–29), with a well developed round flange on internal margin. Seta v´F 6; setae v'G 21 (20–22), serrate; l"G 11 (9–13). Tibia IV 13 (11–14) long; solenidion (7–8), bacilliform; seta v'Ti 72 (61–78), smooth. Tarsus IV 4 (3–4) long, bearing 3 smooth setae of following lengths: tc" 3, pv" 7 (6–8) and u' 7 (6–8). Claw well developed.

Type material

Holotype female, from Croton floribundus Spreng (Euphorbiaceae) , October 30, 2002, São José do Rio Preto (20°46'55”S, 49°19'35”W), São Paulo, Brazil, R. Buosi coll.. Paratypes: 6 females and 3 males same collection data as holotype; 1 female, April 12, 2002, same host, type locality and collector as holotype; all deposited at DZSJRP. Two females and one male, same collection data as holotype, deposited at USNM.