Cissidium rogeri, 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 : 66-67

Cissidium rogeri sp. nov.

urn:lsid:zoobank.org:act:F2BA9299-E1DB-4804-957D-DE575C7A7AB3

Fig. 42

Etymology

I am pleased to name this species after my brother-in-law Roger Allen.

Material examined

Holotype

RWANDA • ♂; Forest Rugage ; 2200 m a.s.l.; Mar. 1951; N. Leleup I.R.S.A.C. Mus. Congo leg.; MMUE.

Paratypes

RWANDA • 1 ♂, 2 ♀♀; same collection data as for holotype; 1 ♀ in poor condition mounted verso, 1 ♀ missing antennae; MMUE, BMNH.

Description

SIZE. Habitus ( Fig. 42A ), length 0.90 mm.

COLOUR. Yellow brown, head darker, pubescence, legs and antennae dusky yellow.

HEAD. Width across eyes 0.24 mm; antennomeres III–XI, length 0.44 mm, III–IX length 0.25 mm, X–XI length 0.19 mm.

PRONOTUM. Length 0.25 mm, width 0.32 mm, base with series of four foveae on each side, two series slightly separated opposite scutellum, all the foveae of approximately equal size, surface sparsely pubescent without foveolae; sides rounded, concavely narrowed to slightly acute hind angles; sides

bordered, the borders continuing along the entire basal margin, without a median emargination opposite the scutellum ( Fig. 42B ).

ELYTRA. 0.56 mm long, 0.50 mm wide, without foveolae.

MESOVENTRITE. With prominent reticulation; medial extension of collar widely based, sharply tapering to mid-point of mid-keel; mid-keel widest anteriorly then sides almost straight to angular hind angles, raised medially to sharp point before the keel; keel with ± three setae, tapering to narrow parallel-sided termination close to base of mesocoxae; mesoventral lateral margins serrate in posterior half ( Fig. 42C ).

METAVENTRITE. Length 0.15 mm, sparsely pubescent, almost glabrous, disc simple, distance across spines 0.13 mm; posterior margins of mesoventral coxal borders serrate.

WINGS. Macropterous.

GENITALIA. Aedeagus as Fig. 6 Fa–b.

Remarks

The only species of Cissidium to have been described from Rwanda.

Figures

Fig. 42. Cissidium rogeri sp. nov. A. Habitus. B. Pronotum, × 610. C. Mesoventrite showing median process of collar, mid-keel and keel, × 1000.

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.