Smeringopina ogooue , Huber, Bernhard A., 2013

Huber, Bernhard A., 2013, Revision and cladistic analysis of the Guineo-Congolian spider genus Smeringopina Kraus (Araneae, Pholcidae, Zootaxa 3713 (1), pp. 1-160: 33-35

publication ID

http://dx.doi.org/10.11646/zootaxa.3713.1.1

publication LSID

lsid:zoobank.org:pub:C5F0BC11-92C0-4B30-9DB3-200882AC8950

persistent identifier

http://treatment.plazi.org/id/B20287ED-FFC4-FFB8-B990-C0CEFC083E95

treatment provided by

Plazi

scientific name

Smeringopina ogooue
status

new species

Smeringopina ogooue  new species

Figs. 8–9View FIGURES 2 – 16, 479– 483View FIGURES 479 – 488, 513–514View FIGURES 509 – 524, 527View FIGURES 525 – 533, 553– 568View FIGURES 553 – 558View FIGURES 559 – 568

Type. ♂ holotype from Gabon, Ogooué-Lolo, near Moudouma  (1 ° 23.5 ’S, 12 °09.6’E), 475 m a.s.l., forest along brook, 24.viii. 2011 (B.A. & S.R. Huber), in ZFMK (Ar 10264).

Other material examined. GABON: Ogooué-Lolo: near Moudouma  : same data as holotype, 10 ♂ 5 ♀ in ZFMK (Ar 10265); same data, 2 juvs. in pure ethanol, in ZFMK (Gab 159). Forest near Lastoursville (0°48.0’S, 12 ° 44.4 ’E), 300 m a.s.l., 21.viii. 2011 (B.A. Huber), 2 ♂ 4 ♀ in ZFMK (Ar 10266); same data, 1 juv. in pure ethanol, in ZFMK (Gab 220). Grotte de Pahon Pira near Lastoursville (0° 48.8 ’S, 12 ° 45.1 ’E), 360 m a.s.l., in cave and near entrance, 22.viii. 2011 (B.A. & S.R. Huber), 6 ♂ 17 ♀ in ZFMK (Ar 10267); same data, 1 juv. in pure ethanol, in ZFMK (Gab 162). Forest at brook near Lastoursville, near Grotte de Pahon Pira (0° 48.8 ’S, 12 ° 45.2 ’E), 290 m a.s.l., 22.– 23.viii. 2011 (B.A. Huber), 1 ♂ 3 ♀ in ZFMK (Ar 10268). Haut Ogooué  : degraded forest at hill near Mouanda (1 ° 34.3 ’S, 13 °11.0’E), 460 m a.s.l., 20.viii. 2011 (B.A. Huber), 1 ♂ in ZFMK (Ar 10269); same data, 1 juv. in pure ethanol, in ZFMK (Gab 163). Forest at Lékoni  River (1 ° 10.7 ’S, 13 ° 32.3 ’E), 305 m a.s.l., 18.viii. 2011 (B.A. & S.R. Huber), 3 ♂ 3 ♀ in ZFMK (Ar 10270); same data, 4 juvs. in pure ethanol, in ZFMK (Gab 215). Forest near Bongoville (1 ° 36.7 ’S, 13 ° 57.4 ’E), 600–650 m a.s.l., 20.viii. 2011 (B.A. Huber), 2 ♂ 2 ♀ 1 juv. in ZFMK (Ar 10271); same data, 1 ♀ 2 juvs. in pure ethanol, in ZFMK (Gab 205). Ogooué-Ivindo: near Mohoba  Mozeye (0° 16.8 ’N, 13 ° 20.9 ’E), 510 m a.s.l., forest along road, 17.viii. 2011 (B.A. & S.R. Huber), 4 ♂ 2 ♀ in ZFMK (Ar 10272); same data, 2 juvs. in pure ethanol, in ZFMK (Gab 168). Monts de Belinga  , forest near Mayebout  (1 °06.7’N, 13 °06.6’E), 500 m a.s.l., 13.– 14.viii. 2011 (B.A. & S.R. Huber), 2 ♂ in ZFMK (Ar 10273); Monts de Belinga  , Mayebout  (1 °06.9’N, 13 °06.4’E), 500 m a.s.l., in building, 13.viii. 2011 (B.A. & S.R. Huber), 1 ♂ in pure ethanol, in ZFMK (Gab 226). Monts de Belinga  , NE Makokou (0°47.0’N, 13 °08.3’E), 530 m a.s.l., degraded forest along road, 15.viii. 2011 (B.A. & S.R. Huber), 2 ♂ 4 ♀ in ZFMK (Ar 10274); same data, 2 ♀ 2 juvs. in pure ethanol, in ZFMK (Gab 224). N Tébé  (0°02.3’S, 13 ° 40.9 ’E), 550 m a.s.l., forest along brook, 17.viii. 2011 (B.A. & S.R. Huber), 1 ♂ 2 ♀ in ZFMK (Ar 10275); same data, 2 juvs. in pure ethanol, in ZFMK (Gab 165).

Etymology. The name is derived from the Ogooué  River whose watershed drains nearly the entire country of Gabon; noun in apposition.

Diagnosis. Easily distinguished from similar congeners (large species with long abdomen, cone-shaped modified hairs on male chelicerae, simple unbranched procursus) by distinctive prolatero-ventral process on male palpal femur ( Fig. 481View FIGURES 479 – 488); also by shape of procursus (distally not curved toward ventrally; Fig. 554View FIGURES 553 – 558) and male cheliceral armature (cone-shaped hairs small, short distal apophyses with only 1–4 modified hairs each, Fig. 555View FIGURES 553 – 558); female not easily distinguished from similar species (e.g., S. bioko  , S. etome  ).

Male (holotype). Total body length 7.1, carapace width 1.8. Leg 1: 79.7 (18.4 + 0.8 + 18.1 + 39.1 + 3.3), tibia 2: 12.4, tibia 3: 8.4, tibia 4: 10.8; tibia 1 L/d: 105. Distance PME-PME 205 µm, diameter PME 170 µm, distance PME-ALE 70 µm, distance AME-AME 45 µm, diameter AME 160 µm. Carapace ochre-yellow with brown mark posteriorly and brown lateral margins; ocular area posteriorly light brown, clypeus with pair of brown marks at rim, sternum dark brown; legs ochre-yellow, slightly darker rings subdistally on femora and tibiae (indistinct) and in patella area, tips of femora and tibiae whitish; abdomen ochre-gray with distinct black pattern dorsally, laterally, and ventrally. Habitus as in Figs. 479–480View FIGURES 479 – 488, ocular area slightly elevated, secondary eyes with distinct ‘pseudolenses’; clypeus unmodified but with longer than usual hairs; deep thoracic pit and pair of shallow furrows diverging behind pit. Chelicerae as in Fig. 555View FIGURES 553 – 558, with lateral proximal apophyses and short distal apophyses; distal apophyses and frontal cheliceral face provided with several small modified (cone-shaped) hairs ( Fig. 562View FIGURES 559 – 568). Palps as in Figs. 481–483View FIGURES 479 – 488; coxa unmodified; trochanter with wide retrolatero-ventral apophysis; femur proximally with ventral sclerotized ridge but without pocket, with long retrolateral apophysis and distinctive prolateral process; prolateral femur-patella joint strongly shifted toward ventrally; tarsus with several strong hairs dorsally; procursus very simple, apparently without hinge between proximal and distal part ( Figs. 553–554View FIGURES 553 – 558, 559– 560View FIGURES 559 – 568); bulb with widened but weakly sclerotized proximal part of embolus ( Figs. 556View FIGURES 553 – 558, 561View FIGURES 559 – 568). Legs without spines and curved hairs, with few vertical hairs, retrolateral trichobothrium on tibia 1 at 1 %; prolateral trichobothrium present on all tibiae; pseudosegments barely visible. ALS with eight spigots each ( Figs. 564, 566View FIGURES 559 – 568); gonopore with two epiandrous spigots ( Fig. 563View FIGURES 559 – 568).

Variation. Tip of procursus slightly longer in males from near Bongoville. Distal cheliceral apophyses with variable number of cone-shaped hairs (1–4 each). Tibia 1 in 28 other males: 15.1–19.9 (mean 17.2).

Female. In general similar to male; clypeus variably dark (often darker than in males). Tibia 1 in 39 females: 12.5–15.6 (mean 14.0). Epigynum consisting of trapezoidal anterior plate slightly indented between anterior and posterior half and weakly sclerotized medially near posterior rim, and large posterior plate ( Figs. 513–514View FIGURES 509 – 524, 557View FIGURES 553 – 558); internal genitalia as in Figs. 527View FIGURES 525 – 533, 558View FIGURES 553 – 558, 565, 568View FIGURES 559 – 568. Spinnerets as in male ( Fig. 567View FIGURES 559 – 568).

Natural history. S. ogooue  was found in well preserved forests (e.g. near Mohoba  Mozeye; near Moudouma  ) and in disturbed forest patches (e.g. NE of Makokou; near Mouanda). Juveniles often built their webs quite freely among the vegetation but the large webs of adults were mainly built among large tree buttresses; as a result, adult specimens were difficult to find in forests where the large trees were missing (e.g. near Tébé  ; at Lekoni  River). At Mayebout  , S. ogooue  was found to share the forest with the superficially similar S. mayebout  . While S. mayebout  was rather found in hollow trees and cavities in the ground, S. ogooue  was collected among tree buttresses. Strategies to avoid predation seemed to vary among localities: in the forests near Bongoville and Moudouma  , the spiders fled extremely rapidly at the slightest disturbance, making capture very difficult; at the entrance to the Pahon Pira cave near Lastoursville they just vibrated and were easy to catch.

Distribution. Known from several localities in eastern Gabon ( Fig. 468View FIGURE 468).