Serroderus Delamare 1948, n. sp.
Creators: name: Fanciulli, Pietro Paolo
name: Caruso, Domenico
name: Dallai, Romano
Publisher: name: Zenodo
Year: 2006
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Collembola
Entomobryomorpha
Paronellidae
Serroderus

description: Genus Serroderus Delamare, 1948   
 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), 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), and three sensilla are on antennomere I (arrows in Figure 2D). Scales present on antennomere II. Mandible and maxilla (Figure 2E, F) show typical morphology; outer maxillary lobe as in Figure 4G. Labrum with 4/5–5-4 smooth setae disposed as in Figure 3C. No labral margin structures were observed. Labial area with six setae (Figure 3B). Prefrontal setae plus 1+1 lateral setae all smooth (Figure 3D). Frontal area with barbed setae (Figure 3D): 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. Anterior part of ventral tube with 2+2 barbed and 4+4 smooth setae on the lateral flaps (Figure 4H). 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). All these setae are smooth. Furca well developed, ratio manubrium: dens: mucro 37:30:12. Dens (Figure 4A) 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), sometimes four (Figure 4B), 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, 5A). Two ventral slender scales are present behind the mucro. Clasping organ as in Figure 4C. Retinaculum with four teeth and one smooth seta on the basal body (Figure 4D). Unguis has one inner tooth and a pair of basal teeth, the outer is larger than the inner one (Figures 2G, 5B, C). Basal unguis and pretarsus both with small spines (Figure 2G); unguiculus with a broad outer tooth. Tenent hair pointed. Trochanteral organ (Figure 4F) 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. Two, three, and three trichobotria for each emitergites, respectively, on II, III, and IV abdominal segments arranged as in Figure 4K.
description: Published as part of 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), pp. 1241-1251 in Journal of Natural History 40 (19 - 20) on page 1243, DOI: 10.1080/00222930600803241, http://zenodo.org/record/5227573