Cissidium modestum, Darby, 2020

Darby, Michael, 2020, A revision of Cissidium Motschulsky (Coleoptera: Ptiliidae) with seventy seven new species, European Journal of Taxonomy 622, pp. 1-188 : 177-178

Cissidium modestum sp. nov.

urn:lsid:zoobank.org:act:54EC643C-B544-4F30-9B34-4C978304D294

Fig. 111

Etymology

Johnson ms name, after the Latin adjective modestus meaning sober, restrained.

Material examined

Holotype

MALAYSIA • ♂; Selangor, Gombak, vicinity of University of Malaya Field Station , 9 th mile; 9 Feb. 1967; D.H. Murphy leg.; FMNH.

Description

SIZE. Habitus ( Fig. 111A ), length 0.57 mm.

COLOUR. Dark red brown, pubescence, legs and antennae dusky yellow.

HEAD. With two slightly elongate setose foveolae inside eyes, width across eyes 0.18 mm; antennomeres III–XI length 0.27 mm, III–IX length 0.13 mm, X–XI length 0.14 mm globular; mentum and prementum obscured.

PRONOTUM. Length 0.15 mm, width 0.22 mm, sparsely pubescent with a row of ten foveae along the base and 3 or 4 smaller ones scattered on the disc; sides rounded, almost parallel-sided posteriad to rectangular hind angles, bordered, the border not continuing along the posterior margin, medial emargination in front of scutellum sinuous, barely marked ( Fig. 111B ).

ELYTRA. Length 0.37 mm, width 0.28 mm, pubescent and foveolate markedly contrasting with the pronotum.

MESOVENTRITE. Median process of mesoventral collar short; mid-keel widest anteriorly, the posterior angles stopping just short of the mesocoxal anterior borders, raised sharply to a medial blunt point before joining the keel; keel with ± four setae, narrow anteriorly, wider and more rounded posteriorly, terminating below the mid-point of the mesocoxae; mesoventral lateral margins serrate posteriorly; humeri toothed ( Fig. 111C ).

METAVENTRITE. Length 0.11 mm, setose, disc simple, width across spines 0.09 mm spines. WINGS. Macropterous.

GENITALIA. Male aedeagus as Fig. 6 Fa–b but slightly longer. Females not known.

Remarks

This is the only species of Cissidium from Malaysia in this group.

Figures

Fig. 111. Cissidium modestum sp. nov. A. Habitus. B. Pronotum, × 645. C. Mesoventrite showing median process of collar, mid-keel and keel, × 1380.

Fig. 6. Figures to show genitalia types. – Spermathecae. A. Cissidium bilineatum sp. nov. B. Cissidium amboroense Darby, 2015. C. Cissidium sawadai Darby, 2015. D. Cissidium arcuatum sp. nov. E. Cissidium murphyi sp. nov. – Aedeagi. F. Cissidium petri Darby, 2015. G. Cissidium clareae sp. nov. H. Cissidium fraternum sp. nov. I. Cissidium tigrum Darby, 2015. J. Cissidium apterum sp. nov. K. Cissidium brachypterum sp. nov. L. Cissidium greensladei sp. nov. M. Cissidium kolombangaricum sp. nov. N. Cissidium mindanao sp. nov.