Daidalotarsonemus somalatus Attiah, 1970

Rezende, José Marcos, Bauchan, Gary, Lin, Jian-Zhen, Ochoa, Ronald & Lofego, Antonio Carlos, 2024, Review of the genus Daidalotarsonemus De Leon (Acari: Prostigmata: Tarsonemidae), Zootaxa 5426 (1), pp. 1-170 : 124-134

Daidalotarsonemus somalatus Attiah, 1970

( Figs. 108–114 )

Daidalotarsonemus somalatus Attiah, 1970: 191 ; Smiley, 1972: 93; Lindquist, 1986: 320; Lin & Zhang, 2002: 62.

Diagnosis. Female: Gnathosoma : Palpal length about 1/4 length of gnathosoma. Dorsum: Reticulate ornamentation on prodorsum. Tergites C and D with reticulate ornamentation. Tergite C with four transverse rows of well-defined cells grouped between setae c1, and same number of cells per row (four). Tergite D with four transverse rows of well-defined cells grouped between setae d. Setae v1, sc2, c1, c2 and h unmodified in shape. Setae v1 shorter than sc2 (~ 26 and ~39, respectively). Setae c1 longer than c2 (~ 25 and ~18, respectively). Setae c1 inserted near midlength of tergite C. Setae d, e and f leaf-shaped. Setae d and f similar in shape (ensiform with two lateral veins), length (~ 45) but slightly different in width (~ 5 and ~4, respectively). Setae e asymmetrical in shape, width (~28), shorter than d and f, but longer than h (~ 32 and ~18, respectively). Setae f ~17 distant from each other, on rounded tubercles. Venter: Tegula truncate, slightly arched posteriorly. Apodemes distinct, except for prosternal and poststernal interrupted. Apodemes 2 not fused to prosternal apodeme. Poststernal apodeme bifurcated anteriorly. Legs: sensory cluster of tibiotarsus I complete. Seta tc” of tarsus II distinctly serrate and robust. Male & larva: unknown.

Redescription:

Gnathosoma : round-subtriangular in ventral view, length 36 (35–38), maximum width 25 (24–26); dorsal apodeme distinct. Setae dgs 15 serrate and vgs 10 (9–11) smooth; palps length 12, with two small subterminal setae and terminal projections. Pharynx length 21 (19–23), maximum width 11 (11–12).

Idiosoma—dorsum: length 235 (229–242), width at level of c1 148 (146–150). Prodorsal shield with coarse ornamentation. Tergites C and D completely reticulate. Lengths of setae: v1 26 (25–27), sc1 16 (16–17), sc2 39, c1 25, c2 18 (18–19), d 45 (44–46), e 32 (30–34), f 45 (41–48) and h 18. Maximum widths of expanded setae: d 5, e 28 and f 4. All dorsal setae serrate, except for c2. Setae v1, sc2, c1 and c2 slender; d and f ensiform with two veins; e asymmetric with two veins. Distances between dorsal setae: v1–v1 32 (31–33), sc2–sc2 58 (58–59), v1–sc2 33 (33–34), c1–c1 59 (59–60), c2–c2 141 (130–152), c1–c2 41 (41–42), d–d 47 (47–48), f–f 17 (16–18), e–f 13 and h–h 23 (23–24). Setae sc2 inserted anteriorly to sc1.

Idiosoma—venter: setae 1a 5 (5–6); 2a 11 (11–12); 3a 14 near anteromedial margins of apodemes 3; 3b 9 on posterior ends of apodemes 4. Apodeme 1 conspicuous, fused to anterior end of prosternal apodeme. Apodeme 2 short and not fused to prosternal apodeme. Prosternal apodeme conspicuous from junction with apodeme 1 to sejugal apodeme. Sejugal apodeme uninterrupted. Apodeme 3 extending diagonally from proximity of base of seta 3a to anterior margin of trochanter III. Apodeme 4 extending diagonally from midlength of poststernal apodeme to base of seta 3b. Poststernal apodeme bifurcated anteriorly. Tegula 16 (16–17) wide and 4 (4–5) long; posterior margin slightly arched. Setae ps 19 (18–20) smooth.

Legs: Lengths: leg I 70, leg II 72 (71–73), leg III 107 (104–110). Number of setae: leg I: 3-4-5(2)+7(1), leg II: 3-3-4-4(1), leg III: 1+3-4-4. Tarsal solenidion ω of tibiotarsus I 6. Sensory cluster of tibiotarsus I complete, solenidion φ1 3, slender, capitate; solenidion φ2 4, slightly capitate; famulus k 7; all inserted at approximately same level. Seta d of tibiotarsus I 30 (30–31), serrate. Solenidion ω of tarsus II length 5. Seta d of tibia II 30 (30–31), serrate. Femorogenu IV 23; tibiotarsus IV 12 (12–13). Length of leg IV setae: v’ F 12 (12–13), v’ G 21 (20–22), v´ Ti 30 (28–33) and tc” 50 (50–51); setae smooth, except for v’ G; v’ Ti tapered.

Type material deposition: holotype ♀ and one paratype ♀ deposited at USNM .

Locality: Previous Records: Vero Beach, State of Florida, USA ( Attiah 1970 — type series locality) . New Records: Miami, State of Florida, USA ; Alva, State of Florida, USA ; Gainesville, State of Florida, USA ; Ridge Manor, State of Florida, USA .

Figures

FIGURE 108. Dorsal surface of Daidalotarsonemus somalatus Attiah, 1970 (female).