Cissidium glabratum, 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 : 15-16

Cissidium glabratum sp. nov.

urn:lsid:zoobank.org:act:09C451E7-C2F0-4F98-AF07-2A6492B08B72

Fig. 10

Etymology

Johnson ms name after the glabrous dorsal surface.

Material examined

Holotype MADAGASCAR • ♂; Perinet , forest of transition; 928 m a.s.l.; 15 Apr. 1969; H. Franz leg. (Mg10); MMUE.

Paratypes MADAGASCAR • 4 ♀♀, same collection data as for holotype; one mounted verso, two on one pin; MMUE, BMNH .

Description

SIZE. Habitus ( Fig. 10A ), length 0.90 mm.

COLOUR. Dark brown, appearing polished, antennomeres and legs dusky yellow.

HEAD. With a transverse depression interrupted medially behind the eyes, width across eyes 0.23 mm; antennomeres III–XI length 0.45 mm, III–IX length 0.21 mm, very thin and elongate, X–XI length 0.24 mm; mentum as Fig. 4A.

PRONOTUM. Length 0.23 mm, width 0.32 mm, glabrous with two large basal foveae; lateral margins rounded almost parallel in basal third, narrowly bordered to rectangular hind angles, not continued along the posterior border which has a sinuous emargination before the scutellum ( Fig. 10B ).

ELYTRA. Length 0.58 mm, width 0.44 mm, glabrous.

MESOVENTRITE. Collar with a broad medial extension lacking reticulation; mid-keel very short, anterior corners rounded, posterior corners joining mesocoxae with well-defined carinae, sharply raised prior to junction with keel; keel narrow, with ± four setae, slightly widening before termination at interruption of mesocoxal borders; mesoventral lateral margins serrate; humeri toothed ( Fig. 10C ).

METAVENTRITE. Length 0.18 mm, sparsely pubescent towards lateral margins, disc plain, width across the thin, sharply pointed spines 0.15 mm; posterior margins of mesocoxal cavities partially serrate.

WINGS. Macropterous in both sexes.

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

Remarks

Lacks the two ancilliary foveae of C. franzi sp. nov. and distinguished from both that species and C. glabratum sp. nov. by the angulate pronotal side margins.

Figures

Fig. 10. Cissidium glabratum sp. nov. A. Habitus. B. Pronotum, × 380. C. Mesoventrite showing median process of collar, mid-keel and keel, × 685.

Fig. 4. Menta and submenta. A. Cissidium petri Darby, 2015, × 1380. B. Cissidium tigrum Darby, 2015, × 1220. C. Cissidium amboroense Darby, 2015, × 1260. D. Cissidium losbanos sp. nov., × 1100. E. Cissidium triangulum Darby, 2019, × 650. F. Cissidium pilosellum sp. nov., × 1420.

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.