Caenocentron immaculatum, FLINT, 1991

Vilarino, Albane, Dias, Everton Santos & Bispo, Pitágoras Da Conceição, 2022, Phylogeny indicates polyphyly in Cnodocentron (Trichoptera: Xiphocentronidae): biogeography and revision of New World species (Caenocentron), Zoological Journal of the Linnean Society 194 (4), pp. 1341-1373 : 1363-1364

publication ID	https://doi.org/ 10.1093/zoolinnean/zlab077
publication LSID	lsid:zoobank.org:pub:FFC8945F-6A97-4DB7-99CD-E08162DD5819
DOI	https://doi.org/10.5281/zenodo.6461401
persistent identifier	https://treatment.plazi.org/id/8F15A94D-FF9D-FF8B-B9F0-F8420D1AFF26
treatment provided by	Plazi
scientific name	Caenocentron immaculatum
status

Treatment

CAENOCENTRON IMMACULATUM FLINT, 1991 View in CoL

( FIG. 17A–C View Figure 17 )

Cnodocentron (Caenocentron) immaculatum Flint, 1991: 34 View in CoL .

Type material: Holotype. COLOMBIA: Antioquia: Quebrada La Jimenez , Mun. Sopetran. 7.ii.1984, U. Matthias leg., (♂ in alcohol, USNM).

Type locality: Colombia, Dpto. Antioquia, Quebrada la Jimenez, Sopetran; USNM; ♂. – Muñoz-Quesada, 2000: 281 [checklist]. – Holzenthal & Calor, 2017: 454 [catalogue].

Diagnosis: Cnodocentron immaculatum is similar to C. galesus and C. pallas by presenting a pair of stout spines on the ventral projection of coxopodite. It can be differentiated by the greatly enlarged base of harpago bearing a brush of setae.

Adult: Forewing length 3.0 mm (N = 1♂). Colour (in alcohol) uniformly dark brown. Maxillary palp formula (I-II-III)-IV-V; segment IV shorter than sum of segments I-II-III; male tibial spurs 2-4-3, male hindleg apical spur unmodified. Venation: forewing fork II and IV present, three anal veins present; hindwing fork II and V present, transverse vein between R1 and SR present. Abdominal sternum V with anterolateral oval region with cuticle modified and reticulate.

Male genitalia ( Fig. 17A–C View Figure 17 ): Tergum, IX in lateral view, narrow, height greater than length. Sternum IX, in lateral view, deltoid, about as high as long, anterior margin truncate, with narrow, elongate apodeme, apical margin rounded, dorsal margin prominent; in ventral view, apical margin concave. Segment X membranous, fused to paraproct. Paraproct, in lateral view, trapezoidal, dorsal margin with short process, ventroapically subacute; in dorsal view, mid-dorsal margins sclerotized, not fused. Pre-anal appendage, in lateral view, strongly sinuous, slender, slightly enlarged apically. Inferior appendage coxopodite and hapago distinct. Coxopodite, in lateral view, median region with short setae; apical margin produced, broad, apex truncate and bearing stout spine near ventral margin; basal surface with ventral projection. Ventral projection with stout spine and rows of setae mesally and along its margin, apical setae longer; in ventral view, ventral projection with long lateral setae, short mesal setae and two stout sublateral spines. Harpago, in lateral view, slender, basal third strongly enlarged, bearing short spine and basal setal brush. Basal plate, in lateral view, directed ventrad; in ventral view short. Phallus tubular, long and slender, base flared, reaching segment V; apex slightly enlarged.

Distribution: Colombia.