Cissidium delicatum sp. nov.

urn:lsid:zoobank.org:act: AC999121-61B9-4EF3-B3B3-1F692F285D33

Figs 3C, 23

Etymology

Johnson ms name, presumably after the delicate nature of this species.

Material examined

Holotype AUSTRALIA • ♀; Queensland, Maiala Nat. Park, Mt Glorious, Brisbane; 4 Aug. 1966; mixed leaf litter; R.A. Crowson leg.; MMUE.

Description

SIZE. Habitus (Fig. 23A), length 0.60 mm.

COLOUR. Yellow.

HEAD. With a shallow linear depression behind the eyes (Fig. 3C); eyes very much reduced, only ± four ommatidia present, presumed blind, width across these 0.15 mm; antennomeres III–XI length 0.27 mm, III–IX length 0.16 mm, X–XI length 0.11 mm globular; mentum as Fig. 4A.

PRONOTUM. Length 0.17 mm, width 0.23 mm, sparsely pubescent, with a pair of foveae at the base; lateral margins evenly rounded almost to rectangular hind angles, narrowly bordered, border extending a short way onto the posterior margin; posterior border without an emargination in front of the scutellum (Fig. 23B).

ELYTRA. Length 0.38 mm, width 0.29 mm, pubescent, setae same length as pronotum, foveae slightly larger in basal third.

MESOVENTRITE. Medial extension of collar short; mid-keel lateral margins sinuate, posterior corners not joining mesocoxae, sharply raised medially before keel; keel with ± four setae, tapering to point at base of the mesocoxae; mesoventral lateral margins obscured; humeri with small tooth (Fig. 23C).

METAVENTRITE. Length 0.11 mm, sparsely pubescent, disc simple, width across spines 0.09 mm; posterior margins of mesocoxal cavities not serrate.

WINGS. Apterous.

Remarks

The rounded pronotal sides almost to the hind angles distinguishes this species from the other Australian Cissidium .