Coryssiphus Simon 1903
Creators: name: Bosselaers, Jan
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Araneae
Liocranidae
Coryssiphus

description: Coryssiphus Simon, 1903: 31.
Type species: Coryssiphus praeustus Simon, 1903, by subsequent designation (Simon 1903b)
Diagnosis. Coryssiphus is vaguely similar to Arabelia Bosselaers, 2009 and Drassinella Banks, 1904 by the absence of C, MA and other tegular apophyses in the male palp (Fig. 4A, B). For the same reason, it differs from all other Liocranidae. Moreover, it differs from Liocranum L. Koch, 1866, Mesiotelus Simon, 1897 and Hesperocranum Ubick & Platnick, 1991 by the parallel tapeta in the PME (Fig. 3D) and the absence of ventrolateral erectile bristles on the anterior legs (Ubick & Platnick 1991). Coryssiphus differs from Arabelia and Drassinella by the shape of the male palpal bulbus, which is circular in ventral view instead of oval, by the long and basally inserted embolus, and by the short and simple ID. It differs from Systaria Simon, 1897 (Miturgidae: Systariinae) by the somewhat smaller AME, stronger vsp on ti and mt I and II, trochanters that are only weakly notched, and a vulva with anterior CO (Fig. 6A, E).
Description. Small to medium sized spiders (3–7 mm), females 20–50% larger than males. Carapace orange-brown, smooth and shiny, with thin brown lining, abruptly narrowed towards the cephalic region, somewhat darker around eye area (Fig. 3A). Width of cephalic region about half the width of carapace (Figs 3A, 8A). Carapace gently sloping upwards from front towards fovea, then steeply sloping down towards petiolus. Fovea pronounced and narrow, dark brown. Faint, darker streaks radiating from fovea towards intercoxal spaces. Clypeus vertical, similar in size to diameter of AME. All eyes ringed with black, subequal in size (Fig. 3D). AME black, other eyes pearl. PME with parallel tapetum. ALE close to PLE, separated by less than one eye diameter. AER slightly recurved from above, slightly procurved from front. PER procurved dorsally and frontally (Figs 3D, 4F). MOQ trapezoidal, narrower anteriorly, distance between anterior and posterior end larger than distance between PME. Chelicerae orange-brown, smooth, with darker fangs. Paturon with two rl and three pl teeth, the smallest pl tooth positioned basally (Figs 4E, 7D). Labium subrectangular with thickened frontal rim, as long as wide. Endites orange-yellow, without oblique depression or lateral notch, but with marked thin, diagonal groove (Fig. 3F). Sparse apical hair tuft and very thin serrula present. Sternum shield-shaped, longer than wide or as long as wide, yellow, smooth, not rebordered, with somewhat thicker brown border. No PLB, PCT or ICS. LOP subrectangular, consisting of two consecutive plates connected by membrane. PSP arrow-shaped, reddish-brown. Abdomen without fringe of frontal setae, do grey with median white stripe in anterior half (Figs 1A, 3A). Two light brown oval anterior sigilla and two dark elongate posterior sigilla. Venter creamy-white (Figs 3B, 7B). ALS rather short and subcylindrical, with rounded tip, separated by half their diameter. PMS small, conical in males and subcylindrical in females. PLS relatively large, with conical apical segment (Figs 3G, H, 4D, 8C, D; Deeleman-Reinhold 2001: figs 230, 231, 234, 235). PMS and PLS with large cylindrical gland spigots in females.Anal tubercle a blunt triangle with fringe of long hairs. RH large, oval, hyaline (Fig. 5D). Legs yellow, without feathery hairs. Leg formula I IV II III in males and IV I II III in females. Trochanter notch shallow. Patellar indentation (Ledoux & Canard 1991) not very wide, ¼ to ½ l of pa. Tibia I with 6–7 vsp, ti II with 5–6 vsp, in both cases sometimes slightly irregular, e.g. 6 on pl side and 7 on rl side. Metatarsi I and II with two vsp, seldom three (Fig. 2). Femora III and IV with one do terminal spine pair. No preening brushes on mt III and IV, ta IV straight, ti III and IV with three vsp, mt III and IV with one vts. All ta with dense claw tuft, tarsal claws with three (leg I) or four (leg IV) teeth (Fig. 3I). Male palp with cylindrical ti, RTA an elongated triangle with sharp apical hook directed inwards (Figs 4A, B, 6D). Bulbus simple, a flattened circular disc without C or MA. Embolus sickle-shaped, implanted basally, running along pl edge of bulbus, ending in sharp thin point anteriorly (Figs 4A, 6D). Cymbium elongate-oval, with blunt triangular tip. Epigyne with elongated depression flanked by two longitudinal sclerotised rims (Fig. 6B, C). Copulatory openings in two inconspicuous anterior grooves. Vulva with elongate-oval anterior ST2, connected by short wide canal to smaller, subglobular posterior ST1 (Fig. 6A, E).
description: Published as part of Bosselaers, Jan, 2024, A revision of the genus Coryssiphus Simon, 1903, with its transfer to Systariinae (Araneae: Miturgidae), pp. 153-168 in Zootaxa 5415 (1) on pages 154-155, DOI: 10.11646/zootaxa.5415.1.7, http://zenodo.org/record/10692812