Hahnia ngai, Rivera-Quiroz & Petcharad & Miller, 2020

Rivera-Quiroz, Francisco Andrés, Petcharad, Booppa & Miller, Jeremy A., 2020, First records and a new genus of comb-tailed spiders (Araneae: Hahniidae) from Thailand with comments on the six-eyed species of this family, European Journal of Taxonomy 724, pp. 51-69 : 59-61

publication ID

https://doi.org/ 10.5852/ejt.2020.724.1157

publication LSID

lsid:zoobank.org:pub:F8E5876F-1438-4055-9DB8-656969643176

DOI

https://doi.org/10.5281/zenodo.4328863

persistent identifier

https://treatment.plazi.org/id/03EE8794-FFB9-FFCB-FD02-FAB0FD061CB6

treatment provided by

Plazi

scientific name

Hahnia ngai
status

sp. nov.

Hahnia ngai View in CoL sp. nov.

urn:lsid:zoobank.org:act:F9A7FE4B-77C4-4D9B-AFDB-A2FC6F5E0739

Figs 4 View Fig , 6 View Fig a–c

Diagnosis

Hahnia ngai sp. nov. can be easily separated from other members of this genus by the simplified female genitalia. Copulatory ducts show only slightly swollen areas with glandular insertions ( Figs 4g View Fig , 6 View Fig b–c) but do not form a receptacle or secondary spermathecae (as seen in Figs 5g View Fig , 6 View Fig e–f).

Etymology

The species epithet is a derivation of the Thai ngai (simple), in reference to the relatively simple vulva without the well-formed secondary spermathecae commonly seen in other species of Hahnia .

Type material

Holotype THAILAND • ♀; Chiang Mai Province, Doi Suthep National Park; 18º48.502′ N, 98º53.528′ E; 1409 m a.s.l.; 24–28 Jul. 2018; Booppa Petcharad, Jeremy Miller and F. Andrés Rivera-Quiroz leg.; montane evergreen forest with pine; Winkler extractor; RMNH.ARA.18415 (four legs used for DNA extraction). GoogleMaps

Paratypes

THAILAND • 1 ♀; Chiang Mai Province, Doi Inthanon National Park ; 18º35.268′ N, 98º29.240′ E; 2572 m a.s.l.; 24–28 Jul. 2018; Booppa Petcharad, Jeremy Miller and F. Andrés Rivera-Quiroz leg.; cloud forest; Winkler extractor; RMNH.ARA.18414 GoogleMaps 1 ♀; same collection data as for preceding; hand coll.; RMNH.ARA.18413 GoogleMaps .

Description

Female

Carapace pear-shaped, reddish-brown, slightly darker in cephalic region; texture smooth ( Fig. 4c View Fig ). AME 0.04 mm, ALE 0.06 mm, PME 0.07 mm, PLE 0.04 mm, AME–AME 0.03 mm, AMEALE 0.02 mm, PME–PME 0.05 mm, PME–PLE 0.03 mm ( Fig. 4d View Fig ). Chelicerae with three promarginal and three retromarginal teeth ( Fig. 4e View Fig ). Legs pale brown, slightly darker on distal segments. Abdomen dark grey with light patches forming five to six chevron bands, oval, longer than wide ( Fig. 4c View Fig ). Tracheal spiracle near middle of abdomen ( Fig. 4a View Fig ).

VULVA. Epigynal plate semitransparent, spermathecae well visible due to transparency. Copulatory openings close together, forming small semi-circular atrium ( Figs 4 View Fig f–g, 6c). Spermatheca sub-spherical with brownish-red coloration ( Fig. 4f View Fig ). Copulatory ducts very simple, slightly swollen centrally ( Figs 4f View Fig , 6 View Fig b–c).

MEASUREMENTS (in mm). Total length 2.8, carapace 1.25 long, 0.91 wide; clypeus 0.09; chelicera 0.45 long, 0.25 wide; leg I: femur 0.95, patella 0.37, tibia 0.71, metatarsus 0.72, tarsus 0.55; leg II: femur 0.94, patella 0.34, tibia 0.72, metatarsus 0.68, tarsus 0.55; leg III: femur 0.89, patella 0.33, tibia 0.63, metatarsus 0.71, tarsus 0.51; leg IV: femur 1.12, patella 0.34, tibia 0.93, metatarsus 1.01, tarsus 0.62; leg formula IV-I-II-III; abdomen 1.65 long, 1.23 wide.

Distribution

Known from two localities in Chiang Mai, Thailand ( Fig. 8 View Fig ): Doi Suthep National Park (type locality), and the neighboring Doi Inthanon National Park.

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Hahniidae

Genus

Hahnia

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