Brevipalpia minima, Zacharda, 1980

Andre, H. M., Zacharda, M. & N'Dri, J. K., 2010, From Parataxonomy To Molecular Data: The Case Of Rhagidiidae (Acari) From Belgian Soils, Acarologia 50 (4), pp. 501-512 : 502-504

Brevipalpia minima

( Figs 1A , 2A , 3A , 4 , 5 A-C, 7A-B)

The rhagidial organ on tarsus I is composed of two grooves, the paraxial groove receives two recumbent solenidia while the antixial shelters only one. Between the two grooves arises the stellate organ, e. On tibia I, the recumbent solenidion and its groove are flanked antiaxially by a distal seta, k", and a second solenidion which is as small as k" and erected more or less behind the first one ( Fig. 7A, B ).

On tarsus II, the rhagidial organ comprises three grooves, each with a recumbent solenidion. Tibia II has a distal k" and a recessed solenidion, both located antiaxally along seta d Fig. 7D, E .

Formulae are as follow.

Epimera: 3-1-4-3.

Legs:

I (17(3)-10(1)-11-7-1 with (ft), (tc), (it) and (p) as tarsal eupathidia,

II (14(3)-5(1)-7-9-1 with (tc), (it), (p) as tarsal eupathidia and a recessed solenidion on tibia,

III (12-5-6-(4-3)-1) with (it), (p) as tarsal eupathidia,

IV (12-6-5-(3-3)-1) with ft ", (tc) and p ’ as tarsal eupathidia.

Palp: 9-1-2-0.

Figures

FIGURE 1: Dorsal aspect of different soil Rhagidiidae. A – Brevipalpia minima Zacharda, 1980; B – Coccorhagidia clavifrons (Canestrini, 1886); C – Hammenia macrostella Zacharda, 1980; D – Parallelorhagidia evansi (Strandtmann and Prasse, 1976); E – Crassocheles virgo Zacharda, 1980 (from Zacharda 1980).

FIGURE 2: Brevipalpia minima and Hammenia macrostella in ventral view. Scale bar = 50 µm.

FIGURE 3: Prodorsum of Brevipalpia minima and Hammenia macrostella. Scale bar = 25 µm.

FIGURE 4: Brevipalpia minima Zacharda, 1980: A – dorsum, B – venter, C – trichobothrium, D – palp, E – tarsus I in lateral aspect, F – chelicera, G – subcapitulum, H – rhagidial organ I (from Zacharda 1980).

FIGURE 5: Rhagidial organs I in dorsal (A, D) and lateral (B, E) views and rhagidial organs II in latero-dorsal view (C, F) of Brevipalpia minima (A-C) and Hammenia macrostella (D-F). Insert of famulus in C. Scale bar = 100 µm.

FIGURE 7: Legs III and IV in antiaxial (A, B) and paraxial (C, D) views of Brevipalpia minima (A-B) and Hammenia macrostella (C-D). Insert showing the microsculpture in B and D. Scale bar = 100 µm.