Aetana indah Huber, 2015
Huber, Bernhard A., Nuñeza, Olga M. & Ung, Charles Leh Moi, 2015, Revision, phylogeny, and microhabitat shifts in the Southeast Asian spider genus Aetana (Araneae, Pholcidae), European Journal of Taxonomy 162, pp. 1-78 : 48-53
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|Aetana indah Huber|
Distinguished from closest known relative ( A. poring Huber , sp. nov.) by shape of prolatero-ventral apophysis of male palpal femur ( Fig. 150 View Figs 150–154 ; pointed tip much longer), by distal cheliceral apophyses ( Fig. 152 View Figs 150–154 ; wide and distally rounded), and by female genitalia ( Figs 153 View Figs 150–154 , 175 View Figs 163–177 ; without pair of dark lines; posterior rim curved toward anterior); from all other congeners also by long apophysis on male palpal trochanter (in A. poring Huber , sp. nov. present but more slender and shorter).
The species name is the Malay word for ‘beautiful’; used here as noun in apposition.
MALAYSIA-BORNEO: ♂, Sabah, Crocker Range between Kota Kinabalu and Tambuan, S-slope, forest along river (5.783° N, 116.338– 116.340° E), 1430–1480 m a.s.l., near ground, 3 Aug. 2014 (B.A. Huber, S.B. Huber), ZFMK (Ar 13982).GoogleMaps
MALAYSIA-BORNEO, Sabah: 3 ♂♂, 5 ♀♀, 3 juvs, same data as holotype, ZFMK (Ar 13983-84); 1 ♀, 2 juvs, in pure ethanol, same data, ZFMK (Bor 170). – 1 ♂, 3 ♀♀, Crocker Range between Kota Kinabalu and Tambuan, N-slope, forest along river (5.834° N, 116.336° E), 1600 m a.s.l., near ground, 3 Aug. 2014 (B.A. Huber, S.B. Huber), ZFMK (Ar 13985); 2 ♀♀, in pure ethanol, same data, ZFMK (Bor 168).
MEASUREMENTS. Total body length 2.8, carapace width 1.2. Leg 1: 36.8 (8.8 + 0.4 + 8.8 + 15.3 + 3.5), tibia 2: 5.2, tibia 3: 3.5, tibia 4: 5.3; tibia 1 L/d: 84. Distance PME-PME 500 µm, diameter PME 115 µm, distance PME-ALE 35 µm; AME absent.
COLOR. Carapace pale ochre with black lateral bands and wide brown median band including ocular area. Clypeus pale ochre with indistinct pair of brown marks at rim. Sternum medially ochre, laterally slightly darker. Legs ochre to light brown, indistinct darker rings on femora (subdistally) and tibiae (proximally and subdistally); tips of femora and tibiae whitish. Abdomen grey with dorsal and lateral pattern of black and indistinct white marks; ventrally with small brown mark near spinnerets and in genital area.
BODY. Habitus as in Fig. 109 View Figs 105–110 ; ocular area slightly raised, each triad on short stalk directed toward lateral; carapace without thoracic furrow (only dark line in anterior part); clypeus slightly more protruding than usual; sternum wider than long (0.65/0.50), unmodified.
CHELICERAE. As in Figs 152 View Figs 150–154 and 161 View Figs 155–162 , with pair of proximal lateral apophyses and distinctive pair of wide distal apophyses in very lateral position, with additional pair of small processes on frontal side of distal apophyses ( Fig. 160 View Figs 155–162 ); without modified hairs; without stridulatory ridges.
PALPS. As in Figs 150–151 View Figs 150–154 , coxa unmodified; trochanter with long ventral apophysis with small teeth prolaterally ( Fig. 158 View Figs 155–162 ); femur with rounded retrolatero-ventral apophysis, very long prolatero-ventral apophysis with two side branches, with small prolateral apophysis proximally close to trochanter. Procursus complex ( Figs 155–158 View Figs 155–162 ); retrolatero-ventral process with bifid tip. Bulb simple, with short and wide embolus ( Fig. 159 View Figs 155–162 ), weakly sclerotized.
LEGS. Without spines, with curved hairs dorsally on metatarsi 1 and 2 only (mostly on proximal half), with few vertical hairs; retrolateral trichobothrium on tibia 1 at 2.5%; prolateral trichobothrium absent on tibia 1, present on other tibiae. Tarsus 1 with ~35 pseudosegments, fairly distinct.
Tibia 1 in 4 other males: 8.7, 8.8, 8.9, 9.0. Female
In general similar to male; triads closer together (distance PME-PME 210 µm), not on stalks; clypeus less protruding; no curved hairs on metatarsi; abdomen with continuous ventral dark band between epigynum and spinnerets. Tibia 1 in 8 females: 6.3–7.2 (mean 6.7). Epigynum large brown plate, slightly protruding, with internal pockets and other sclerites visible through cuticle ( Figs 153 View Figs 150–154 , 175 View Figs 163–177 ). Internal genitalia as in Figs 154 View Figs 150–154 and 177 View Figs 163–177 , with pair of membranous pockets near posterior margin.
The spiders were found very close to the ground in small holes and cavities and barely reacted to disturbance (similar only to A. poring Huber , sp. nov.; see above). They share the locality with A. kinabalu which lives higher among the vegetation.
Known from Crocker Range only ( Fig. 5 View Fig ).
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