Smeringopus atomarius Simon, 1910

Huber, Bernhard A., 2012, 3461, Zootaxa 3461, pp. 1-138: 83-85

publication ID

http://doi.org/10.5281/zenodo.5256541

publication LSID

lsid:zoobank.org:pub:0704C43A-73D8-4A28-915A-7FF8611C8606

DOI

http://doi.org/10.5281/zenodo.5256541

persistent identifier

http://treatment.plazi.org/id/03FBB532-FFD7-1757-FF6A-0D2E399CFB13

treatment provided by

Felipe

scientific name

Smeringopus atomarius Simon, 1910
status

 

Smeringopus atomarius Simon, 1910  

Figs. 432–433, 442, 453–454, 469–470, 505–508, 520–525

Smeringopus atomarius Simon 1910: 190–191   . Kraus 1957: 229–230, figs. 46–52.

Types. 1♀ syntype (?) from Botswana, Kalahari, no date (L. Schultze), in MNHN ( AR 10491 View Materials ), examined. Unspecified number of female syntypes from Namibia, Erongo Region, Rooibank near Walvis Bay [23°10.7’S, 14°39.0’E] and Otjimbingwe [22°21.3’S, 16°08.0’E] and from Botswana, Kgalagadi District, Lehututu [23°54.9’S, 21°49.7’E] and Kang [23°40.8’S, 22°47.0’E], not examined (not in MNHN) GoogleMaps   .

Notes. Simon (1910) based his description on females from Namibia and Botswana and did not designate a holotype. Slight differences in epigynum shape among the specimens examined suggest that two species might be involved. I follow Kraus (1957) in considering the Namibian specimens as S. atomarius   , but further collecting (especially of males in Botswana) is necessary to solve this problem.

I have not seen the female from Neudamm ( Namibia, 22°30’S, 17°22’E) assigned by Kraus (1957) to S. hypocrita   but the distribution patterns in this species group ( Fig. 475) strongly suggest that it was in fact S. atomarius   .

Diagnosis. Distinguished from similar congeners by shapes of procursus (distal structures, Fig. 505), bulb (processes of embolus, Figs. 506, 507; similar S. uisib   ), cheliceral apophyses (similar S. sederberg   and S. hypocrita   ; cf. Figs. 478, 479), shape of epigynum ( Fig. 469; wide plate with small round pockets; similar S. uisib   ), and spotted leg femora (not only proximally as in S. uisib   ).

Male (Windhoek, CAS). Total body length 4.8, carapace width 1.6. Leg 1: 44.4 (11.7 + 0.7 + 10.6 + 19.5 + 1.9), tibia 2: 7.6, tibia 3: 5.7, tibia 4: 8.5; tibia 1 L/d: 56. Habitus as in female (cf. Figs. 432, 433). Carapace ochreyellow with brown median and lateral marks, clypeus with pair of dark stripes, sternum ochre-yellow with brown pattern, leg femora with many brown spots, femora and tibiae with whitish tips and dark subdistal rings, abdomen ochre-gray with indistinct dorsal and ventral pattern. Distance PME-PME 140 µm, diameter PME 140 µm, distance PME-ALE 45 µm, distance AME-AME 45 µm, diameter AME 140 µm. Ocular area slightly elevated, secondary eyes with small ‘pseudo-lenses’; deep thoracic pit. Chelicerae similar S. hypocrita   (cf. Figs. 478, 479), apophyses slightly closer together and shorter; each apophysis with one modified hair at tip ( Fig. 520). Palps as in Figs. 453 and 454, coxa with distinct retrolateral apophysis, trochanter barely modified, femur with retrolateral furrow with distinct proximal rim, procursus with distinctive distal processes ( Fig. 505; retrolateral view as in S. uisib   , cf. Fig. 509), bulb with distinctive complex embolus ( Figs. 506, 507; very similar S. uisib   ). Legs without spines, few vertical hairs, with curved hairs on tibiae and metatarsi 1; retrolateral trichobothrium on tibia 1 at 2.5%; prolateral trichobothrium present on tibia 1. Gonopore with two epiandrous spigots ( Fig. 523); ALS with eight spigots each ( Fig. 524).

Variation. Tibia 1 in 9 other males: 6.9–13.2 (mean 10.5).

Female. In general similar to male; tibia 1 in 11 females: 7.3–11.5 (mean 10.0). Epigynum a wide plate with pockets ( Figs. 469, 525; very similar S. uisib   ); internal genitalia as in Figs. 470 and 508.

Distribution. Widely distributed in central Namibia ( Fig. 475). Records from Botswana need to be checked. The females from Grootfontein assigned by Kraus (1957) to S. atomarius   are here assigned to S. uisib   .

Material examined. NAMIBIA: Khomas: Windhoek [22°34’S, 17°05’E], iii.1991 ( V. & B. Roth), 1♂ 1♀ in CAS GoogleMaps   ; same locality, date and collector not given, 3♂ 7♀ + juvs (4 vials) in SMF ( RII 3734, 5970 View Materials , 6317 View Materials , 6618 View Materials ) GoogleMaps   ; same locality, 24.iv.–9.v.1911 (W. Michaelsen), 1♀ in ZMH GoogleMaps   . Windhoek, Regenstein [22°43’S, 17°02’E], 9.xi. and 3.xii.1974 (3 vials) (S. Endrödy-Younga), 3♀ in TMP (18754, 18773, 18775) GoogleMaps   . Hardap: 50 km E Gobabeb [~ 23°40’S, 15°25’E], in pitfall traps, iv.–vi.1979 (B. Wharton), 1♂ in CAS GoogleMaps   ; same data but 28.iii.–22.iv.1979, 1♂ in CAS GoogleMaps   . Omaheke: Gobabis [22°27’S, 18°58’E], date and collector not given, 1♂ (only 1 palp, chelicerae missing) in SMF ( RII 5189) GoogleMaps   . Otjozondjupa: Okahandja [21°59’S, 16°55’E], v.1955 (Gaerdes), 1♀ in SMF ( RII 11728 View Materials ex RII 11056 View Materials ) GoogleMaps   . Bona near Okahandja , 2.vi.1911 (W. Michaelsen), 1♂ 1♀ in ZMH   . Erongo: Karibib [21°56’S, 15°51’E], 23.–26.iv.1911 (W. Michaelsen), 1♂ 2♀ 1 juv. in ZMH GoogleMaps   .

SOUTH AFRICA: Northern Cape Prov.: Kalahari, Gemsbok Park [~ 25°55’S, 20°15’E], 4.ii.1987 (E.A. Ueckermann), 1♂ 2♀ 2 juvs in NCP (87/422) GoogleMaps   .

BOTSWANA: Kgalagadi District: Kalahari , 1♀ syntype (?) above   .

MNHN

Museum National d'Histoire Naturelle

V

Royal British Columbia Museum - Herbarium

CAS

California Academy of Sciences

SMF

Forschungsinstitut und Natur-Museum Senckenberg

ZMH

Zoologisches Museum Hamburg

TMP

Transvaal Museum

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Pholcidae

Genus

Smeringopus

Loc

Smeringopus atomarius Simon, 1910

Huber, Bernhard A. 2012
2012
Loc

Smeringopus atomarius

Kraus, O. 1957: 229
Simon, E. 1910: 191
1910