Cissidium cryptophagoides, 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 : 143-144

Cissidium cryptophagoides sp. nov.

urn:lsid:zoobank.org:act:28447343-05AE-485D-9AB3-F713DF6FC22A

Fig. 90

Etymology

Johnson ms name.

Material examined

Holotype

PANAMA • ♀; B[arro] C[olorado] I[sland]; 14 Jul. 1938; FM( HD) #38-7, 1c Au; FMNH.

Paratype

PANAMA • 1 ♂; same collection data as for holotype; FMNH Chicago leg.; the specimen is mounted verso; MMUE.

Description

SIZE. Habitus ( Fig. 90A ), length 0.80 mm.

COLOUR. Yellow.

HEAD. With a shallow median depression between the eyes, width across eyes 0.24 mm; antennomeres III–XI length 0.41 mm; mentum as Fig. 4A.

PRONOTUM. Length 0.19 mm, width 0.36 mm, very sparsely pubescent, without foveolae or foveae; lateral margins sharply angled medially, almost parallel-sided to rectangular (rounded) hind angles, anterior angles marked by a swelling of the lateral border, border not extending onto the posterior margin which has an emargination opposite the scutellum ( Fig. 90B ).

ELYTRA. Length 0.54 mm, width 0.48 mm, pubescent, shallowly foveate.

MESOVENTRITE. Medial extension of collar wide almost as wide as mid-keel at termination; mid-keel lateral margins concave, strongly widened anteriorly before joining collar and posteriorly with carinae joining mesocoxal anterior borders, sharply raised medially before keel; keel with ± four setae parallelsided to a blunt termination beyond the interruption point of the mesocoxal margins; mesoventral lateral margins serrate in posterior half, deep pits present at junction between collar and humeri which may be perforations; humeri wide, sharply toothed ( Fig. 90C ).

METAVENTRITE. Length 0.13 mm, female with disc simple, male with distinctive pattern of radiating setae in triangular, medially depressed area, distance across short triangular spines 0.11 mm; posterior margins of mesocoxal cavities serrate.

WINGS. Micropterous.

GENITALIA. Female spermatheca globular. Male aedeagus not found in dissection.

Remarks

One of the three Brazilian species in this group. Distinguished by the almost parallel-sided lateral margins of the pronotum before the hind angles and by the setae on the metaventrite of the male.

Figures

Fig. 90. Cissidium cryptophagoides sp. nov. A. Habitus. B. Pronotum, × 475 C. Mesoventrite showing median process of collar, mid-keel and keel, × 1100.

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.