Cissidium bomjesus, 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 : 141-142

Cissidium bomjesus sp. nov.

urn:lsid:zoobank.org:act:82221C1C-A852-4E0B-99FF-B24A65B2040A

Fig. 89

Etymology

Named after the place of capture, noun in apposition.

Material examined

Holotype

BRAZIL • ♂; Bom Jesus ; 28°40′ E, 50°12′ S; 1200 m a.s.l.; Dec. 1962; F. Plaumann leg.; FMNH.

Description

SIZE. Habitus ( Fig. 89A ), length 0.68 mm.

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

HEAD. Linear depression behind the eyes with a row of foveolae, width across eyes 0.20 mm; antennomeres III–XI length 0.33 mm, III–IX length 0.24 mm, X–XI length 0.11 mm globular; mentum as Fig. 4D.

PRONOTUM. Length 0.21 mm, width 0.28 mm, without either foveae or foveolae; lateral margins ± sharply angled then concave to rectangular hind angles, bordered, the border not extending along the posterior margin which has an emargination opposite the scutellum ( Fig. 89B ).

ELYTRA. Length 0.44 mm, width 0.37 mm, pubescent, setae same length as those on pronotum.

MESOVENTRITE. Medial extension of collar broad; mid-keel widest anteriorly then tapering posteriorly before rising sharply to junction with keel, posterior corners reaching anterior margin of mesocoxal borders; keel without setae, almost parallel to a rounded tip at midpoint of the mesocoxae; mesoventral

lateral margins not serrate, almost rectangular before meeting mesocoxal borders; humeri bluntly toothed ( Fig. 89C ).

METAVENTRITE. Length 0.15 mm, width across spines 0.09 mm, with sparse pubescence medially, disc simple; posterior margins of mesocoxal cavities serrate.

WINGS. Macropterous.

GENITALIA. Male aedeagus as Fig. 6 Fa–b. Females not known.

Remarks

One of the five Brazilian species in this group. Only likely to be confused with C. reitteri ( Matthews, 1889) but distinguished by the less angulate pronotal sides and the narrower and longer mid-keel.

Figures

Fig. 89. Cissidium bomjesus sp. nov. A. Habitus. B. Pronotum, × 570. C. Mesoventrite showing median process of collar, mid-keel and keel, × 1320.

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.