Homolophus pallens ( Kulczyński, 1901 )

Snegovaya, Nataly Yu. & Cokendolpher, James C., 2021, Further studies on harvestman genus Homolophus (Opiliones: Phalangiidae), with descriptions of two new species, Zootaxa 4908 (3), pp. 301-353 : 342-344

publication ID

https://doi.org/ 10.11646/zootaxa.4908.3.1

publication LSID

lsid:zoobank.org:pub:F2774810-3C77-426E-A1BC-0F42F21E7F9B

DOI

https://doi.org/10.5281/zenodo.4450808

persistent identifier

https://treatment.plazi.org/id/039C113F-0951-FFAB-98EB-DBCCFC34FC38

treatment provided by

Plazi

scientific name

Homolophus pallens ( Kulczyński, 1901 )
status

 

Homolophus pallens ( Kulczyński, 1901)

Figures 14 View FIGURE 14 , 30 View FIGURE 30

Phalangium pallens Kulczyński, 1901: 320 View in CoL , 361–363

Opilio pallens — Roewer 1911: 41, pl. 3, fig. 8; Roewer 1912: 136, pl. 3, fig. 23; Roewer 1923: 776, fig. 949; Roewer 1956: 293

Euphalangium transbaicalicum (nec Kulczyński, 1901)—sensu Staręga 1964: 1964, figs. 18–19; Šilhavý 1972: 101–102 (misidentified)

Homolophus pallens — Tsurusaki et al. 2000: 83–84

Homolophus przewalskii (nec Staręga, 1978)—sensu Tchemeris et al. 1998, 192–193, figs. 8–14; Snegovaya 2012: 7–9, figs. 26–30 (misidentified)

Diagnosis. This species differs from all species, including the most closely related, H. nordenskioeldi (L. Koch, 1879a) and H. arcticus Banks, 1893 , by the following: body covered with different sized denticles, from large (mostly in rows on abdomen) to microdenticles; penis with very long and slender truncus and even more slender glans (in lateral view). In dorsal view penis truncus broad and only slightly less wide distally until slender (same as glans width) at apex.

Type Locality. Mongolia, Tuguruk , [now Mongolia, Gobi-Altai Aimak, Tugreg (= Tuguruk), ca. 45°50’N, 94°59’E)] GoogleMaps .

Distribution. Russia (S. Siberia), Kazakhstan, and here newly recorded from Mongolia ( Fig. 14 View FIGURE 14 ).

Specimens Examined. MONGOLIA, Ulan Bator (formerly Urga), Khursu Mt. , 31.07– 27.08.1925, leg. P. Kozlov (1 male, ZIN) .

Description. Large harvestman; male body rectangular, with rounded corners; heavily sclerotized body cuticle, less slender, 1.6 times longer than wide; length 8.0 mm, width 5.0 mm. Body covered with different sized denticles, from large, whitish-cream color (mostly in rows on abdomen) to darkly colored microdenticles. Body with longitudinal indistinct light-colored dashed stripe running entire length; body color yellowish orange to various shades of brown and black. Ocularium low, slightly wider than long, not large, its length from anterior margin of cephalothorax, with 8–9 denticles on each side. Legs not very long, angular in cross-section, I and III pair swollen, segments of legs covered with black-tipped denticles. Leg lengths (mm): I 2.8 + 1.5 + 3.7 + 4.5 + 6.5 = 19.0, II 7.5 + 2.0 + 5.7 + 5.4 + 9.0 = 29.6, III 4.0 + 1.8 + 3.2 + 5.5 = 14.5, IV missing. Pedipalps thickened and noticeably armed, Fe ventrally covered with large pointed denticles, dorsally and laterally with smaller denticles. Pa and Ti dorsally and ventrally with pointed denticles. Ta ventrally with strip of sensory microdenticles. Pedipalp segment lengths (mm): 2.0 + 1.0 + 1.4 + 2.1 = 6.5. Chelicerae enlarged (sexually dimorphic) with some tabby marks, both segments dorsally / anteriorly with black-tipped denticles. Cheliceral basal segment ventrally smooth without bulge, length 2.5 mm, distal segment length 3.7 mm. Penis with very long and slender truncus and even more slender glans (in lateral view). In dorsal view, penis truncus broad and only slightly less wide distally until slender (same as glans width) apex. Penis long, truncus dorsoventrally flattened, only slightly bowed, recurved in lateral view, length (mm): truncus 6.0, glans 0.65, stylus 0.1.

Female unknown.

Comments. Specimen almost 100 years old, colors likely faded.

ZIN

Russian Academy of Sciences, Zoological Institute, Zoological Museum

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Opiliones

Family

Phalangiidae

Genus

Homolophus

Loc

Homolophus pallens ( Kulczyński, 1901 )

Snegovaya, Nataly Yu. & Cokendolpher, James C. 2021
2021
Loc

Homolophus przewalskii

Snegovaya, N. Yu. 2012: 7
2012
Loc

Homolophus pallens

Tsurusaki, N. & Chemeris, A. N. & Logunov, D. V. 2000: 83
2000
Loc

Euphalangium transbaicalicum

Silhavy, V. 1972: 101
Starega, W. 1964: 1964
1964
Loc

Opilio pallens

Roewer, C. F. 1956: 293
Roewer, C. F. 1923: 776
Roewer, C. F. 1912: 136
Roewer, C. F. 1911: 41
1911
Loc

Phalangium pallens Kulczyński, 1901: 320

Kulczynski, W. 1901: 320
1901
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