Erro brookei, Darby, Michael, 2019

Darby, Michael, 2019, New Ptiliidae (Coleoptera) from Sarawak in the spirit collection of the Natural History Museum, London, European Journal of Taxonomy 512, pp. 1-50 : 10-11

Erro brookei sp. nov.

urn:lsid:zoobank.org:act:D407C41C-3E0F-4A89-9B7C-081834E13585

Fig. 4

Diagnosis

Separated fom E. impiger and E. angolensis by the foveolate pronotum with acute hind angles.

Etymology

Named after James Brooke, the British explorer who became the first Rajah of Sarawak in 1841 and whose descendants continued to govern the kingdom until 1946.

Type material

Holotype MALAYSIA-BORNEO • ♂; Sarawak, 4 th division, Gunung Mulu National Park , comp 5; May–Aug. 1978; P.M. Hammond and J.E. Marshall leg., BM 1978-49 ; alluvial forest litter; BMNH.

Paratype

MALAYSIA-BORNEO • ♂; same data as for holotype; BMNH.

Description

SIZE. Habitus ( Fig. 4A ), length 0.84 mm (including abdomen) 0.68 mm (excluding abdomen).

COLOUR. Dark brown antennae and legs dusky yellow; dorsal surface pubescent.

HEAD. Antennomeres III–XI, length 0.34 mm. Width across eyes 0.26 mm. Head with a pair of foveolae on a level with the front of the eyes ( Fig. 4C ) and a longitudinal fossa behind the eyes. Mentum and submentum chaetotaxy ( Fig. 4D ).

PRONOTUM. Strongly foveolate in posterior third the foveolate area extending forward into two shallow depressions either side of disc, lateral margins strongly sinuate before acute hind angles, median portion of hind margin projected slightly backwards, length 0.21 mm, width 0.33 mm.

ELYTRA. Pubescence arising from foveolae but no additional depressions as on the pronotum, widest about middle, hind margin slightly truncated. length 0.43 mm, width 0.43 mm.

VENTRUM. Mesoventrum coarsely reticulate medially and with sharply pointed teeth at the anterior angles, collar sinuate with a narrow medial ridge extending posteriorly to a sharply pointed keel between the contiguous mesocoxae, posterior margins sinuate ( Fig. 4E ). Metaventrum pubescent without evidence of epiventral sutures, metacoxae separated by ± ¼ the width of the sclerite.

ABDOMEN. Pygidium margins barely rounded, tip slightly flattened without a central tooth.

FEMALE GENITALIA. Not known.

MALE GENITALIA. Aedeagus difficult to make out ( Fig. 4B ).

Figures

Fig. 4. Erro brookei sp. nov. A. Habitus. B. Aedeagus. C. Head and pronotum ×460. D. Mentum and submentum ×1420. E. Mesoventrum ×610.