Serroderus trinacriae, Fanciulli & Caruso & Dallai, 2006

Fanciulli, Pietro Paolo, Caruso, Domenico & Dallai, Romano, 2006, On some Collembola from a Sicily cave, with the description of a new species of Serroderus Delamare, 1948 (Collembola, Cyphoderidae), Journal of Natural History 40 (19 - 20), pp. 1241-1251 : 1243

publication ID	https://doi.org/ 10.1080/00222930600803241
DOI	https://doi.org/10.5281/zenodo.5227622
persistent identifier	https://treatment.plazi.org/id/F76187F8-5943-FFBA-FE13-FB5FF14CFC2C
treatment provided by	Felipe
scientific name	Serroderus trinacriae
status

Treatment

Genus Serroderus Delamare, 1948 View in CoL

Serroderus trinacriae n. sp.

Holotype: „„ and 10 paratypes mounted on slides are conserved in the collection of R. Dallai at the Department of Evolutionary Biology University of Siena.

The species is named according to the ancient name of Sicily: Trinacria.

Description

Body length up to 1.7 mm, white in alcohol. Without eye patch. Ratio ant./head diagonal 86:50. Antennal segment ratios I: II: III: IV as 11:21:22:32. Antennae have numerous slender sensillate elements ( Figure 2A–D View Figure 2 ), which are about 60, 70, 50, and 6, respectively, on antennomeres IV, III, II, and I. Other shorter sensilla are also present at the tip of antennomeres II – IV (arrows in Figure 2A–C View Figure 2 ), and three sensilla are on antennomere I (arrows in Figure 2D View Figure 2 ). Scales present on antennomere II. Mandible and maxilla ( Figure 2E, F View Figure 2 ) show typical morphology; outer maxillary lobe as in Figure 4G View Figure 4 . Labrum with 4/5–5-4 smooth setae disposed as in Figure 3C View Figure 3 . No labral margin structures were observed. Labial area with six setae ( Figure 3B View Figure 3 ). Prefrontal setae plus 1+1 lateral setae all smooth ( Figure 3D View Figure 3 ). Frontal area with barbed setae ( Figure 3D View Figure 3 ): f-0 is a pair of minute sensilla, f-4 is shorter than others while f-5 is the longest one. Dorsal and ventral chaetotaxy of the head as in Figure 3A, B View Figure 3 . Anterior part of ventral tube with 2+2 barbed and 4+4 smooth setae on the lateral flaps ( Figure 4H View Figure 4 ). Posterior part of ventral tube with 2+2 distal and 4+4 basal setae plus one unpaired seta, in addition to 2+2 small pegs ( Figure 4I View Figure 4 ). All these setae are smooth. Furca well developed, ratio manubrium: dens: mucro 37:30:12. Dens ( Figure 4A View Figure 4 ) with two rows of scales without setae between them; there are five scales in the inner and eight in the outer row. Two barbed setae are in the distal part of dens, while a row of these seta is parallel to the outer row of scales; about 10 barbed setae are in the proximal part of the dens. Three ( Figure 4A View Figure 4 ), sometimes four ( Figure 4B View Figure 4 ), spines follow the scales of the inner row toward the basis of dens. Mucro of the multidentate type, apical tooth not curved, followed by two strong teeth and a series of smaller spines; the formula is aAA7-8 ( Delamare-Debouteville 1948) ( Figures 4E View Figure 4 , 5A View Figure 5 ). Two ventral slender scales are present behind the mucro. Clasping organ as in Figure 4C View Figure 4 . Retinaculum with four teeth and one smooth seta on the basal body ( Figure 4D View Figure 4 ). Unguis has one inner tooth and a pair of basal teeth, the outer is larger than the inner one ( Figures 2G View Figure 2 , 5B, C View Figure 5 ). Basal unguis and pretarsus both with small spines ( Figure 2G View Figure 2 ); unguiculus with a broad outer tooth. Tenent hair pointed. Trochanteral organ ( Figure 4F View Figure 4 ) composed of nine smooth setae arranged in a v-form. Anterior margin of Th. II with numerous long blunt ciliated setae as in Figure 3E View Figure 3 . Two, three, and three trichobotria for each emitergites, respectively, on II, III, and IV abdominal segments arranged as in Figure 4K View Figure 4 .