Pholcus krabi

Berhard A. Huber, Booppa Petchard, Charles Leh Moi Ung, Joseph K. H. Koh & Amir R. M. Ghazali, 2016, The Southeast Asian Pholcus halabala species group (Araneae, Pholcidae): new data from field observations and ultrastructure, European Journal of Taxonomy 190, pp. 1-55: 27

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Pholcus krabi


Pholcus krabi  species group

This species group is newly proposed to include three species previously part of the Ph. halabala  group ( Ph. chiangdao Huber, 2011  ; Ph. khene Huber, 2011  ; Ph. kinabalu Huber, 2011  ) as well as three newly described species ( Ph. krabi Huber  , sp. nov.; Ph. narathiwat Huber  , sp. nov.; Ph. kipungit Huber  , sp. nov.). They share three putative synapomorphies: (1) absence of AME ( Figs 116–117View Figs 116 – 123); (2) absence of modified hairs on distal male cheliceral apophyses ( Fig. 118View Figs 116 – 123); and (3) reduction of ALS spigots to two (one widened, one pointed; Fig. 122View Figs 116 – 123; confirmed in Ph. kinabalu  and Ph. krabi  sp. nov. only). In addition, live males of the three newly described species share highly distinctive reddish to orange palps ( Figs 102, 106, 108View Figs 102 – 109), and females of at least Ph. chiangdao  , Ph. kinabalu  , and Ph. narathiwat  sp. nov. share dimorphic color patterns on the prosoma. Species newly observed in the field ( Ph. kipungit  sp. nov.; Ph. narathiwat  sp. nov.; Ph. krabi  sp. nov.) built very similar domed webs among the vegetation (0.5–2 m above the ground), usually with the apex of the dome attached to the underside of a leaf. They are also very similar in general appearance (the three species are indistinguishable in the field; Figs 102–109View Figs 102 – 109). Very low abundances and/or patchy distributions were observed in all three species. However, most specimens known of Ph. kinabalu  were collected by canopy fogging ( Huber 2011), suggesting that abundances of at least this species may be different in higher forest strata. Egg-sacs are carried in front of the body ( Figs 105, 109View Figs 102 – 109) as in typical pholcids. This species group is known from mainland Southeast Asia and Borneo ( Fig. 110View Fig. 110). The RMNH has an additional species from East Kalimantan ( Fig. 110View Fig. 110) that is not described here because only a single poorly preserved male specimen is available.


USA, Florida, Gainesville, University of Florida, Florida Museum of Natural History, Allyn Museum


Netherlands, Leiden, Nationaal Natuurhistorische Museum ("Naturalis") [formerly Rijksmuseum van Natuurlijke Historie]