Rutacarus

Valdecasas, Antonio G., 2008, Revision of the genus Rutacarus (Acari, Parasitengona, Hydrachnidia) with the description of a new species from Central America, Zootaxa 1693, pp. 62-68 : 66

Key to Rutacarus species

1 Palp with two setae on ventral side of P-II and P-IV widened anteriorly ( Fig. 4)..................................... ....................................................................................................... Rutacarus pyriformis Lundblad, 1937

- Palp with one setae on ventral side of P-II and not widened anteriorly ( Fig. 9 )......................................2

2(1) Median margin of fourth coxae reaching the end of genital field ( Figs. 5 , 8 ).........................................3

- Median margin of fourth coxae end about half way of genital field ( Fig. 6 )...........................................5

3(2) Posterior dorsoglandularia on a chitinous swelling on the dorsal furrow. Body circular. Anterior coxae does not project beyond anterior end of ventral shield ( Fig. 3) ................................................................. ......................................................................................... Rutacarus angelieri Orghidan and Gruia, 1983

- Posterior dorsoglandularia not on a chitinous swelling of the dorsal furrow. Dorsal shield with 3 or 4 pairs of glandularia. Body more or less elliptic. Anterior coxae projecting beyond anterior end of ventral shield........................................................................................................................................................4

4(3) Postocularia and four pairs of dorsoglandularia incorporated into the dorsal shield. Body shape elongated .................................................................................................... Rutacarus ferradasae Cook, 1980

- Postocularia and three pairs of dorsoglandularia incorporated into the dorsal shield. Body shape globular .......................................................................................................................... Rutacarus annae n. sp.

5(3) Body shape elongated-oval; with a long seta at the end of IV-leg-6; anteriorly directed ridge from insertion of fourth legs well-developed; ridges in dorsal shield ...................... Rutacarus sasonus Cook, 1986

- Body shape circular; without a long setae at the end of IV-leg-6; without anteriorly directed ridge from insertion of fourth legs; no dorsal ridges ................................................ Rutacarus stygius Harvey, 1990

Figures

FIGURES 7 – 11. Rutacarus anna e n. sp. (holotype). 7, dorsal shield; 8, ventral shield; 9, palp; 10, last segment of fourth leg; 11, chelicera.

FIGURES 5 – 6. Ventral shields from R. angelieri and R. sasonus (from Orghidan and Gruia, 1983 and Cook, 1986).