Phryssonotus, Scudder, 1885

Phryssonotus View in CoL sp. ( Figs 5 View FIG ; 6 View FIG )

MATERIAL EXAMINED. — Immature female, specimen number SA 5.1, deposited in the MNHN.

Locality and horizon: from the amber of Salignac (Haute-Provence, France). Albo-Cenomanian period (100-95 million years). The amber piece is mounted between coverslips in Canada balsam medium.

DESCRIPTION

Immature female ( Figs 5 View FIG ; 6 View FIG )

The posterior part of body is lacking; only the head, seven tergites and 10 pairs of legs are present; only the tarsus II and telotarsus of the eleventh pair remain ( Fig. 6A View FIG ) because the posterior part of the body is broken. The slightly elongated vulval sacs demonstrates that the specimen is not an adult; it is probably an immature female with 12 or 14 pairs of legs (adults have 17 pairs of legs), the stage with 11 pairs of legs does not exist in Synxenidae .

Measurements. Body length up to eleventh pair of legs = 2.40 mm.

Head. Only four right ocelli are visible, the remaining ocelli cannot be observed; left antenna with eight articles; only some setiform sensilla are visible on the articles. Right antenna with only three basal articles. Labrum not visible. Lateral expansion of gnathochilarial palp very long ( 200 µm), with 16 visible sensilla on right palp and 18 on left palp ( Fig. 6B View FIG ).

Trunk. The scale-shaped trichomes of the tergites are often lacking or detached from their insertion ( Fig. 6C View FIG ). One easily visible seta on tarsus II longer than telotarsus and one seta on the posterior edge of each article ( Fig. 6D View FIG ). The caudal penicil is unknown because the posterior part of the body is missing.