Cissidium mindanao, 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 : 88-89

Cissidium mindanao sp. nov.

urn:lsid:zoobank.org:act:05800208-5A5F-48D0-AC96-2616B8A34B4B

Figs 6N , 56

Etymology

Named after Mindanao, the second largest island in the Philippines where the specimen was collected. Noun in apposition.

Material examined

Holotype

PHILIPPINES • ♂; Mindanao, E slope of Mt McKinley , Davao Prov.; 3300 ft a.s.l.; 28 Aug. 1946; flight dusk; Werner leg.; FMNH.

Description

SIZE. Habitus ( Fig. 56A ), length 0.67 mm.

COLOUR. Dark brown, pubescence, legs and antennae dusky yellow. HEAD. Densely setose; antennomeres III–XI length 0.37 mm, III–IX length 0.20 mm, X–XI length 0.17 mm; width across eyes 0.22 mm; mentum parallel-sided, otherwise obscured.

PRONOTUM. Length 0.21 mm, width 0.30 mm, densely pubescent and foveolate, without foveae along basal margin; sides sharply angled, concave to rectangular hind angles slightly concave to obtuse front angles, bordered, the border continuing along the entire posterior margin including the sinuous emargination in front of the scutellum ( Fig. 56B ).

ELYTRA. Length 0.49 mm, width 0.40 mm, pubescent without distinct foveolae markedly contrasting with the pronotum.

MESOVENTRITE. Median process of mesoventral collar narrow, parallel-sided; mid-keel anterior angles joining collar, posterior angles not reaching mesocoxal anterior borders, raised medially at junction with keel; keel with ± eight setae, parallel-sided, with rounded termination at the interruption of the mesocoxal borders; mesoventral lateral margins angled below humeri, serrate posteriorly; humeri toothed ( Fig. 56C ).

METAVENTRITE. Length 0.18 mm, setose, disc simple, width across spines 0.11 mm.

WINGS. Macropterous.

GENITALIA. Male aedeagus ( Fig. 6N ). Female not known.

Remarks

One of the only two species of Cissidium in this group from the Philippines. Distinguished from C. werneri sp. nov. by the more densely foveolate pronotum.

Figures

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.

Fig. 56. Cissidium mindanao sp. nov. A. Habitus. B. Pronotum, × 430. C. Mesoventrite showing median process of collar, mid-keel, keel and lateral margin, × 660.