Cissidium sueae, 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 : 131-132

Cissidium sueae sp. nov.

urn:lsid:zoobank.org:act:662078AF-F3BB-49B4-A366-AAB095BF7D06

Figs 3B , 83

Etymology

I have the pleasure in naming this species after my sister Susan Allen.

Material examined

Holotype

BRAZIL • ♀; Santo Caterinay, Chapecosino; Jan. 1950; F. Plaumann leg.; H.F. Dybas # 58-36; FMNH.

Description

SIZE. Habitus ( Fig. 83A ), length 0.86 mm.

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

HEAD. With a shallow foveolate and setose linear depression behind the eyes ( Fig. 3B ), width across eyes 0.17 mm; mentum as Fig 4A ; antennomeres III–XI, length 0.42 mm, III–IX length 0.22 mm, X–XI length 0.20 mm.

PRONOTUM. 0.24 mm long, 0.32 mm wide, pubescent with shallow foveolae in basal half; lateral margins evenly rounded to acute hind angles, narrowly bordered, the borders continuing along the posterior margin to the angulate medial emargination in front of the scutellum ( Fig. 83B ).

ELYTRA. 0.54 mm long, 0.47 mm wide, pubescent and shallowly foveolate.

MESOVENTRITE. Medial extension of collar with terminal fringe of short setae; mid keel effaced before collar, hind angles stopping well short of the mesocoxal anterior borders; keel long, setose, tapering to a sharp point near the base of the mesocoxae; mesoventral lateral margins rounded, without serrations; humeri toothed ( Fig. 83C ).

METAVENTRITE. Sparsely pubescent, length 0.14 mm, disc simple, width across spines 0.12 mm; posterior margin of mesocoxae not serrate.

WINGS. Macropterous.

GENITALIA. Female spermatheca globular. Male not known.

Remarks

One of the five Brazilian species in this group. Distinguished by the setose posterior margin of the median extension of the mesoventral keel.

Figures

Fig. 3. Figures to show differences in morphological features of head between eyes. A. Cissidium upiense sp. nov., × 565. B. Cissidium sueae sp. nov., × 480. C. Cissidium delicatum sp. nov., × 1060. D. Cissidium foveolatum Johnson, 1982, × 730. E. Cissidium basale Motschulsky, 1855, × 385. F. Cissidium ibicarense sp. nov., × 505. G. Cissidium eciton sp. nov., × 650.

Fig. 83. Cissidium sueae sp. nov. A. Habitus. B. Pronotum, × 345. C. Mesoventrite showing median process of collar, lateral margin, mid-keel and keel, × 750.

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.