Callitrichia pilosa, (WUNDERLICH, 1978), 2022

Lin, Shou-Wang, Lopardo, Lara & Uhl, Gabriele, 2022, Evolution of nuptial-gift-related male prosomal structures: taxonomic revision and cladistic analysis of the genus Oedothorax (Araneae: Linyphiidae: Erigoninae), Zoological Journal of the Linnean Society 195, pp. 417-584 : 476-478

CALLITRICHIA PILOSA ( WUNDERLICH, 1978) COMB. NOV.

( FIGS 19K , 22K , 24K , 34 ; SUPPORTING INFORMATION, FIG. S2H )

Oedothorax pilosus Wunderlich, 1978: 258 , figs 1–3 (Dm).

Type material: Holotype: Ethiopia: Shewa Province, det. Wunderlich 1977 (SMF 11353, examined).

Diagnosis:

Males: Can be identified by the shape of palpal tibial prolateral apophysis, the embolic division morphology and the lack of prosomal modification.

Description:

Male (holotype, SMF): Total length: 1.85. Prosoma: 0.81 long, 0.64 wide, unmodified ( Fig. 19K ). Eyes: AME-AME: 0.02, AME width: 0.05, AME-ALE: 0.01, ALE width: 0.09, ALE-PLE: 0, PLE width: 0.08, PLE-PME: 0.03, PME width: 0.06, PME-PME: 0.07. Clypeus: not hirsute, one sub-AME seta. Sternum: 0.52 long, 0.46 wide. Chelicerae: mastidia absent; stridulatory striae rows widely and evenly spaced ( Fig.22K ).Legs:Tm I: 0.74.Pedipalp:patella prolateral proximal vertical macrosetae absent; TPA distally with a broader retrolateral lobe and a narrower prolateral lobe, both scaly, with hollow in-between ( Fig. 34C ); PC base not visible from dorsal view, distal setae close to distal clasp, distal-setae-bearing area wide, distal clasp extended apically ( Fig. 34A ); T without papillae, PT with longitudinal folds along distal rim; TS short, without papillae ( Fig. 34D ); MSA present; DSA wide, tip angled at ventral side; EM flat, without papillae, not exceeding ARP; ARP pointed; LER absent; VRP long; radical part close to ARP wrinkled; TP tip pointed; E retrolaterally spiral ( Fig. 34E ). Opisthosoma: anterior half light-grey, posterior half dark-grey, with continuous transition in the middle ( Fig. 24K ); PMS with mAP, two AC; PLS with triad, 3+ AC ( Fig. 34F ).

Female: Unknown.

Distribution: Ethiopia, only known from the type locality.

Habitat: Unknown.

Remarks: Following the results of our phylogenetic analysis, this species is transferred to Callitrichia , a placement also consistent with morphological traits of the species. The specific epithet of this species has priority over the later published Callitrichia pilosa ( Jocqué & Scharff, 1986) , the latter is given a new replacement name Ca. hirsuta (see above).

Figures

Figure 2. The first part of the three most-parsimonious trees generated from the analysis of Matrix II, with Bremer/ Jackknife support valuesshown beside nodes.The presence/absence of clades in the consensus trees of the most-parsimonious trees of the implied weights analysis with different k values are shown in the box under/on the branches: black for presence when considering all taxa; grey for presence only when Callitrichia convector (Tanasevitch, 2014) and Ca. usitata (Jocqué & Scharff, 1986) are not considered; white for absence.

Figure 3. Continuation of Figure 2, showing Clade 36.

Figure 4. Character transformation of selected prosomal characters reconstructed on the first among the three most- parsimonious trees generated from the analysis of Matrix II.

Figure 19. Male prosomal morphology, lateral. A, ‘Oedothorax’ meghalaya Tanasevitch, 2015 (traced from photograph). B, ‘Oe.’ uncus Tanasevitch, 2015 (traced from photograph). C, Holmelgonia basalis Jocqué & Scharff, 1986 (Jocqué & Scharff, 1986, fig. 18). D, Callitrichia holmi (Wunderlich, 1978) (traced from photograph). E, Ca. picta (Caporiacco, 1949) (Holm 1962, fig. 58). F, Ca. gloriosa (Jocqué, 1984) (traced from photograph). G, Ca. convector Tanasevitch, 2014 (traced from photograph). H, Ca. sellafrontis Scharff, 1990 (traced from photograph). I, Ca. juguma (Scharff, 1990) (Scharff 1990a, fig. 164). J, Ca. uncata (Jocqué & Scharff, 1986) (Jocqué & Scharff, 1986, fig. 130). K, Ca. pilosa (Wunderlich, 1978) (traced from photograph). L, Ca. usitata (Jocqué & Scharff, 1986) (traced from photograph). M, Ca. legrandi (Jocqué, 1985) (Jocqué, 1985, fig. 21). N, Ca. macrophthalma (Locket & Russell-Smith, 1980) (traced from photograph). O, Ca. muscicola (Bosmans, 1988) (traced from photograph). P, Ca. latitibialis (Bosmans, 1988) (traced from photograph). Q, Ca. longiducta (Bosmans, 1988) (traced from photograph). R, Nasoona setifera (Tanasevitch, 1998) (Tanasevitch, 1998a, fig. 3). S, N. crucifera (Thorell, 1895) (Tu & Li, 2004, fig. 6A).

Figure 22. Male chelicerae, stridulatory striae on lateral side. A, ‘Oedothorax’ meghalaya. B, ‘Oe.’ uncus. C, Holmelgonia basalis. D, Callitrichia holmi. E, Ca. picta. F, Ca. gloriosa. G, Ca. convector. H, Ca. sellafrontis. I, Ca. juguma. J, Ca. uncata. K, Ca. pilosa. L, Ca. usitata. M, Ca. legrandi. N, Ca. macrophthalma. O, Ca. muscicola. P, Ca. latitibialis. Q, Ca. longiducta. R. Nasoona setifera. S, N. crucifera. Scale bars 0.05 mm.

Figure 24. Male opisthosoma, dorsal view. A, ‘Oedothorax’ meghalaya Tanasevitch, 2015. B, ‘Oe.’ uncus Tanasevitch, 2015. C, Holmelgonia basalis Jocqué & Scharff, 1986. D, Callitrichia holmi (Wunderlich, 1978). E, Ca. picta (Caporiacco, 1949). F, Ca. gloriosa (Jocqué, 1984). G, Ca. convector Tanasevitch, 2014. H, Ca. sellafrontis Scharff, 1990. I, Ca. juguma (Scharff, 1990). J, Ca. uncata (Jocqué & Scharff, 1986). K, Ca. pilosa (Wunderlich, 1978). L, Ca. usitata (Jocqué & Scharff, 1986). M, Ca. legrandi (Jocqué, 1985). N, Ca. macrophthalma (Locket & Russell-Smith, 1980). O, Ca. muscicola (Bosmans, 1988). P, Ca. latitibialis (Bosmans, 1988). Q, Ca. longiducta (Bosmans, 1988). R, Nasoona setifera (Tanasevitch, 1998). S, N. crucifera (Thorell, 1895). Scale bars 0.1 mm.

Figure 34. Callitrichia pilosa (Wunderlich, 1978). A–E, male right palp, images flipped horizontally. A, retrolateral view. B, prolateral view. C, dorsal view. D, ventral view. E, apical view. F, male posterior median spinnerets and right posterior lateral spinneret. Scale bars 0.1 mm.