Aetana paragua 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 : 26-28

publication ID 10.5852/ejt.2015.162

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scientific name

Aetana paragua Huber

sp. nov.

Aetana paragua Huber View in CoL , sp. nov.

Figs 54 View Figs 51–56 , 70–74 View Figs 70–74 , 90–92 View Figs 87–95


Distinguished from closest known relatives ( A. kiukoki Huber , sp. nov., A. loboc Huber , sp. nov., A. pasambai Huber , sp. nov.) by distinctive modification of male clypeus ( Fig. 72 View Figs 70–74 ; similar only in A. kiukoki Huber , sp. nov.), and tongue-shaped posterior projection of epigynum ( Fig. 73 View Figs 70–74 ; very similar to A. kiukoki Huber , sp. nov.; much shorter in A. loboc Huber , sp. nov.; female of A. pasambai Huber , sp. nov. unknown). Distinguished from A. kiukoki Huber , sp. nov. also by shorter male eye stalks ( Fig. 72 View Figs 70–74 ), weakly curved apophysis on male palpal femur ( Fig. 71 View Figs 70–74 ), different shape of distal procursus elements ( Fig. 71 View Figs 70–74 ), and pore plates wider apart ( Fig. 74 View Figs 70–74 ). Distinguished from A. loboc Huber , sp. nov. and A. pasambai Huber , sp. nov. also by modification of male palpal femur (only one large retrolateral process) and absence of median process in male ocular area.


Named for the type locality; noun in apposition.

Material examined


PHILIPPINES: ♂, Dinagat Isl., near Libjo, Paragua Forest , ‘site 1’ (10.222° N, 125.553° E), 130 m a.s.l., forest at brook, near ground, 20 Feb. 2014 (B.A. Huber), ZFMK (Ar 13952).


Other material

PHILIPPINES: Dinagat Isl., 2 ♂♂, 4 ♀♀, same data as holotype, ZFMK (Ar 13953); 1 ♂, in pure ethanol, same data, ZFMK (Phi 230). – 1 ♀, 1 juv., Paragua Forest, ‘site 2’ (10.241° N, 125.545° E), 240 m a.s.l., forest along brook, near ground, 20 Feb. 2014 (B.A. Huber), ZFMK (Ar 13954).


Male (holotype)

MEASUREMENTS. Total body length 3.0, carapace width 1.2. Leg 1: 35.2 (8.0 + 0.5 + 8.2 + 15.5 + 3.0), tibia 2: 4.9, tibia 3: 3.4, tibia 4: 4.9; tibia 1 L/d: 67. Distance PME-PME 230 µm, diameter PME 135× 110 µm, distance PME-ALE ~ 35 µm; AME absent.

COLOR. Carapace ochre-yellow with narrow lateral marginal bands and wide dark brown median band including ocular area and clypeus; sternum with pair of wide brown bands converging posteriorly, labium proximally dark brown; legs greenish ochre with barely visible darker rings on femora (subdistally, with light tip), and tibiae (proximally and subdistally, the latter followed by light tip); abdomen ochre-gray, dorsally and laterally covered with many black marks, with few indistinct white marks, ventrally with dark band behind gonopore and very indistinct mark in front of spinnerets.

BODY. Habitus as in A. kiukoki Huber , sp. nov. (cf. Figs 51–52 View Figs 51–56 ); ocular area raised, each triad on additional hump directed toward lateral, without median process; carapace with very shallow median furrow in anterior part only; clypeus with large distinctive process ( Fig. 72 View Figs 70–74 ), strongly protruding in upper part, with two pairs of rounded apophyses set with small scales; sternum wider than long (0.80/0.55), unmodified.

CHELICERAE. As in Fig. 72 View Figs 70–74 , with pair of dark lateral apophyses proximally, barely visible lateral humps more distally; without modified hairs; without stridulatory ridges.

PALPS. As in Figs 70–71 View Figs 70–74 ; very similar to A. kiukoki Huber , sp. nov., but retrolateral apophysis of femur less strongly curved, distal elements of procursus different, and semitransparent pointed process on bulb smaller.

LEGS. Without spines; with curved hairs on metatarsi 1–3 (few curved hairs also on tibiae 1–2); few vertical hairs; retrolateral trichobothrium on tibia 1 at 3%; prolateral trichobothrium absent on tibia 1, present on other tibiae; tarsus 1 with ~30 pseudosegments, only distally distinct.

Male (variation)

Tibia 1 in 2 other males: 8.2, 8.3.


In general similar to male but clypeus unmodified; eye triads much closer together (distance PME-PME 125 µm); without stridulatory apparatus between carapace and abdomen. Tibia 1 in 4 females: 5.5, 5.6, 5.6, 5.8; dark and light rings on legs often more distinct than in males. Epigynum and internal genitalia very similar to those of A. kiukoki Huber , sp. nov., but tongue-shaped posterior projection slightly shorter and wider ( Figs 73 View Figs 70–74 , 90 View Figs 87–95 ), and pore plates wider apart ( Fig. 74 View Figs 70–74 ).

Natural history

The spiders were found in domed webs very close to the ground. At the same locality, A. libjo Huber , sp. nov. occurred higher among the vegetation.


Known from two neighboring localities on Dinagat Island only ( Fig. 4 View Figs 3–4 ).


Zoologisches Forschungsmuseum Alexander Koenig













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