Salfacarus antsirananensis Vázquez & Klompen,

Ma. Magdalena Vázquez G. & Hans Klompen, 2010, The genus Salfacarus (Acari: Opilioacarida) in Madagascar, Zootaxa 2482, pp. 1-21: 5-8

publication ID 10.5281/zenodo.893912

persistent identifier

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scientific name

Salfacarus antsirananensis Vázquez & Klompen

n. sp.

Salfacarus antsirananensis Vázquez & Klompen  n. sp.

( Figs. 2–12View FIGURES 2 – 5View FIGURES 6 – 9View FIGURES 10 – 11View FIGURE 12 – 13)

Diagnosis. With an unusually large number of papilliform setae on the palp femur of the adults (15–19, relative to 6–12 in other species). Ovipositor with a pair of large spinose structures and 1–2 pairs of small structures (gland ducts?).

Description. Based on observations on 1 larva, 2 protonymphs, 10 deutonymphs, 3 tritonymphs, 7 females, 4 males.

Gnathosoma. Chelicera ( Fig. 2View FIGURES 2 – 5). Basal segment without setae in L, PN and DN. One seta added in TN, fixed digit with 3 setae in all instars. All setae lightly barbed. Dorsal and antiaxial lyrifissure well developed in nymphs and adults, not observed in L. Fixed digit with 1 distinct tooth, movable digit with 2 teeth and a well developed terminal hook. Movable digit with one ventral denticle in L, PN and most DNs, two in some DNs and TN, and 3–5, in adults. Most distal denticle in adults largest. Internal surface of movable digit with a small sensillum ( Fig. 28View FIGURES 28 – 31, arrow).

Subcapitulum ( Fig. 3View FIGURES 2 – 5). All 4 pairs of paralabial setae present: pl1 small, conical; With’s organ (pl2) membranous with a distinct, undivided (not forked) support structure; rutella (pl3) with 1 row of 5 teeth, inserted dorso-laterally; pl4 very small, inserted dorsally on subcapitulum. In addition, 4 circumbuccal (cb), and 10–11 median and subcapitular (vm (in part), lvm, ldm, vp, lvp) setae. Sexual dimorphism absent. L, PN, DN and TN similar but number of median and subcapitular setae smaller, 0, 2, 3, and 7–10, respectively. Lateral lips with distinct canals in all instars (dl1 and/or dl2 of Grandjean (1936)) ( Fig. 3View FIGURES 2 – 5, arrow).

Palps. Adult ( Figs. 4–5View FIGURES 2 – 5). Trochanter with 6–7 ribbed, tapering (r-type) setae; femur with 7–8 r-type and 18–19 papilliform or mucronate (= p-type) setae in female, 10–13 r and  15–16 p-type setae in male; genu with 31–43 r and  8 (females) or 5–6 (males) p-type setae. Tibia and tarsus partially fused. Tibia with approximately 12 smooth (s-type) and 51 r-type setae. Palp tarsus with lyrifissures i π and i α. Setation including 3 s, 5 d (leaflike), and approximately 26 ch, 11 sm, and 10 v setae. Sexual differentiation in tibiotarsus absent or indistinct. Pretarsus in shape of a pair of well developed sessile claws. Immatures ( Figs. 6-9View FIGURES 6 – 9). Trochanter: L, PN, 0 setae; DN, 1 (rarely 2) r-type, TN, 3–5. Femur: L 4–5 r-type and 0 p-type setae; PN, 3–4 r and  1–2 p; DN, 3–4 r and  2–3 p; TN, 3–5 r and  5– 9 p. Genu: L, 8 r and  0 p setae; PN, 6 r and  1 p; DN, 8–9 r and  0–2 p; TN, 15 r and  2– 3 p. Tibia: L, 11 setae; PN, 12; DN, 28; TN, 34. Palp tarsus of L, PN, DN and TN with, respectively, 0, 2, 3 and 4 d setae; L with 2 s setae, other instars with 3; numbers of v, ch, and sm setae not scored for immatures.

Idiosoma. Anterior dorsal shield of adults with 78–92 (N=3) papilliform setae, and two pairs of eyes. Lyrifissures absent. Rostrum more or less blunt. L, PN, and DN with, respectively, 24, 24–28, and 44–54 shield setae (setae could not be counted in tritonymph). Remaining idiosoma with lyrifissures arranged in more or less transverse rows. Setation limited to 1 dorsal and 2 ventral setae on preanal segment in L and PN; subsequent instars all with more than 200 papilliform setae. Setae predominantly mid-dorsal and mid-ventral. Anal valves each with 21–22 papilliform setae in adults; L, PN, DN and TN with, respectively, 1, 2, 6–10, and 9–11 setae on each valve.

Sternitogenital region ( Figs. 10-11View FIGURES 10 – 11). Sternal verrucae in adults with 1 long, tapering, and 4 (rarely 3–6) shorter setae each. Remaining sternal area with 2 pairs of long tapering and 8–9 (female) or 4-6 (male) pairs of papilliform setae, plus 3 pairs of lyrifissures (two pairs very large, the third smaller; all different in shape and size from “standard” opisthosomal lyrifissures). L, DN and TN with, respectively, 0, 1, and 3–4 shorter setae on sternal verrucae, and 0, 1, and 4–8 papilliform setae in remaining sternal area (numbers unclear in PN).

Pregenital capsules of adults with 1 long tapering (lt) and 4–5 (rarely 6) papilliform setae each (0, 2, and 2–4 papilliform setae, respectively, in L, DN and TN). Pregenital area and genital sclerite in male with, respectively, 6–9 papilliform and 7–10 ribbed, tapering setae. Pregenital and genital areas in female with, respectively, 2 papilliform and 0 setae. Numbers for the L, DN and TN, respectively, 0 and 0, 0 and 0, 0–1 and 0–2. Ovipositor ( Fig. 12View FIGURE 12 – 13). Without long, lightly barbed terminal setae. With two large spinose basal structures and 1–2 pairs of very small structures (gland ducts?).

Legs. Tarsi II each with a dorsal bifurcate seta and two smooth sensilla resembling solenidia. Tarsi II –IV of adults with distinct acrotarsus; first visible on tarsi II –III in TN, on tarsi IV in DN. Trochanters III –IV subdivided in TN and adults. Pretarsi II –IV each with two pairs of setae and a pair of claws.

Collection information. Multiple numbers refer to multiple slides representing a single, dissected, individual. Holotype female ( OSAL007754–57View Materials), MADAGASCAR: Antsiranana, Forêt de Orangea , 3.6 km 128° SE Remena, 90 m, 12°15’32”S 49°22’29”E, coll. Fisher, B L & Griswold, C E, 22–28 Feb 2001, ex littoral rainforest, sifted litter (BLF3200)GoogleMaps  . Paratypes, same data as holotype: L ( OSAL007728View Materials), PN ( OSAL007729View Materials), PN ( OSAL007730View Materials), DN ( OSAL007731View Materials), DN ( OSAL007736View Materials), DN ( OSAL007739View Materials), DN ( OSAL007740–41View Materials), DN ( OSAL007746View Materials), TN ( OSAL007732–33View Materials), TN ( OSAL007742–43View Materials), TN ( OSAL007744–45View Materials), TN ( OSAL007734–35View Materials), TN ( OSAL007737–38View Materials), TN ( OSAL007747–48View Materials), TN ( OSAL007749View Materials), TN ( OSAL007750–51View Materials), F ( OSAL007752–53View Materials), F ( OSAL007766View Materials), F ( OSAL92012–13View Materials), F ( OSAL92014–16View Materials), F ( OSAL92017–18View Materials), F ( OSAL92022–23View Materials), M ( OSAL007758–59View Materials), M ( OSAL007760–61View Materials), M ( OSAL007762–63View Materials), M ( OSAL92019View Materials)GoogleMaps  . Same locality, coll. Boutin, L J, 22 Feb 2001, ex remnant dry forest: M (OSAL007764–65), M (OSAL007767).

Additional material (non-paratype): MADAGASCAR: Antsiranana, Montagne des Français , 7.2 km 142° SE Antsiranana, elev. 180 m, 12°19’22”S 49°20’17”E, coll. Boutin, L J, 23–25 Feb 2001, ex unknown: M ( OSAL007768–7770View Materials), M ( OSAL007771–7772View Materials), F ( OSAL007773View Materials)GoogleMaps  . MADAGASCAR: Antsiranana, R.S. de l'Ankarana, 22.9 km 224° SW Anivorano Nord, Camp Anglaise, elev. 80 m, 12°54’32”S 49°06’35”E, 10–16 Feb 2001, coll. Boutin, L J, ex general collecting: TN ( OSAL007774–7776View Materials), M ( OSAL007777–7778View Materials), M ( OSAL007781–7782View Materials), M ( OSAL007783–7784View Materials)GoogleMaps  ; same locality, coll. Fisher, B L & Griswold, C E, 10–16 Feb 2001, ex tropical dry forest; sifted litter (EF19, BLF2858): M ( OSAL007779–7780View Materials).GoogleMaps 

Deposition of types. Holotype female at CAS ( CAS 18500View Materials) (4 slides OSAL 007754–57). Other specimens at CAS, OSAL, UQRoo.

Etymology. The species is named after the province of Antsiranana in which all available collections were made.


California Academy of Sciences


Ohio State University Acarology Laboratory