Cissidium dividuum sp. nov.

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Fig. 91

Etymology

Johnson ms name, derivation not clear.

Material examined

Holotype PANAMA • ♀; Chiriqui Prov., Castita Alta, Finca Larida nr Boquete; 18 Mar. 1959; 6900 ft a.s.l.; berlese (543), cont. floor debris in deep ravine; H.S. Dybas leg.; FM(HD) #59.261; FMNH.

Description

SIZE. Habitus (Fig. 91A), length 0.72 mm.

COLOUR. Dark brown, shining, pubescence, antennae and legs paler, head darker.

HEAD. With a linear depression behind the eyes, width across eyes 0.19 mm; antennomeres III–XI length 0.32 mm, III–IX length 0.17 mm, X–XI length 0.15 mm; mentum and prementum obscured.

PRONOTUM. Length 0.20 mm, width 0.28 mm, pubescent, shallowly foveolate in basal half; lateral margins sharply angled and strongly bordered, the borders with prominent rounded angles at the anterior corners and running a short distance along the posterior margin, hind angles markedly acute, posterior margin with an emargination opposite the scutellum (Fig. 91B).

ELYTRA. Length 0.47 mm, width 0.41 mm, pubescent, setae same length as pronotum, without foveolae.

MESOVENTRITE. Collar without a medial extension; mid-keel narrow, posterior corners clearly joining mesocoxal anterior margins, sharply raised at junction with keel, with ± two setae; keel with ± four setae, parallel-sided to bluntly pointed termination below the mesocoxae; mesoventral lateral margins almost obliterated, without serrations; humeri toothed (Fig. 91C).

METAVENTRITE. Length 0.17 mm sparsely pubescent, with shallow medial depression, disc simple, width across spines 0.11 mm, posterior margins of mesocoxal borders without serrations.

WINGS. Macropterous.

GENITALIA. Female spermatheca globular. Males not known.

Remarks

One of the three Brazilian species in this group. Only likely to be confused with C. cryptophagoides sp. nov. if the mesoventral characters are studied, but unlike that species the pronotal lateral borders are concave and the hind angles sharply acute.