Cissidium ceylonicum, 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 : 29-30

publication ID	https://doi.org/ 10.5852/ejt.2020.622
publication LSID	lsid:zoobank.org:pub:9CD3B2CD-F072-4994-8CA9-24145D343401
DOI	https://doi.org/10.5281/zenodo.3795522
persistent identifier	https://treatment.plazi.org/id/92DE2EED-460C-4482-9AD2-6EEAE0CBA59A
taxon LSID	lsid:zoobank.org:act:92DE2EED-460C-4482-9AD2-6EEAE0CBA59A
treatment provided by	Valdenar
scientific name	Cissidium ceylonicum
status	sp. nov.

Treatment

Cissidium ceylonicum View in CoL sp. nov.

urn:lsid:zoobank.org:act:92DE2EED-460C-4482-9AD2-6EEAE0CBA59A

Fig. 18 View Fig

Etymology

Johnson ms name after the country where the insect was collected.

Material examined

Holotype

SRI LANKA • ♀; Sabaragamuwa, 2 miles east of Kalawana; 20 Jan. 1970; Mussard, Besuchet and Löbl leg.; MMUE.

Paratypes

SRI LANKA • 3 ♂♂, 1 ♀ (1 ♂, 1 ♀ mounted verso); same collection data as for holotype; MMUE .

Description

SIZE. Habitus ( Fig. 18A View Fig ), length 0.69 mm.

COLOUR. Dark yellow brown, head slightly darker, pubescence, legs and antennae yellow.

HEAD. Without a clear linear depression behind the eyes, width across eyes 0.21 mm, antennomeres III–XI length 0.38 mm, III–IX length 0.22 mm, X–XI length 0.16 mm, mentum and prementum as Fig 4A View Fig but sides a little more concave.

PRONOTUM. Length 0.19 mm, width 0.28 mm, sparsely pubescent with a series of ± eight foveae along the posterior margin, the six medial ones united into two large transverse ones; lateral margins rounded to rectangular hind angles, bordered, the border not extending along the posterior margin which has a sinuous emargination before the scutellum ( Fig. 18B View Fig ).

ELYTRA. Length 0.43 mm, width 0.41 mm, pubescent, the setae arising from shallow foveolae.

MESOVENTRITE. Medial extension of collar pointed; mid-keel wider anteriorly, posterior corners with carinae to anterior margins of mesocoxal borders, sharply raised medially before keel; keel with a series of ± eight setae, parallel-sided to a blunt termination beyond the interruption of the mesocoxal margins; mesoventral lateral margins serrate in posterior half; humeri toothed ( Fig. 18C View Fig ).

METAVENTRITE. Length 0.13 mm, pubescent, width across narrow finely pointed spines 0.11 mm, disc simple; posterior margins of mesocoxal cavities serrate.

WINGS. Macropterous.

GENITALIA. Female spermatheca globular. Male aedeagus as Fig. 6 View Fig Fa–b.

Remarks

The only species of Cissidium from Sri Lanka in this group.