First records and three new species of the family Symphytognathidae (Arachnida, Araneae) from Thailand, and the circumscription of the genus Crassignatha Wunderlich, 1995

By

Rivera Quiroz, Francisco Andres
Petcharad, Booppa
Miller, Jeremy A.

Type

Article

Date of Publication

2021

Original Publication

ZooKeys

Volume

1012

Pages

21--53

Subjects

3D reconstruction , Anapistula , Borneo , computed tomography , micro-CT , Patu , Sabah , symphytognathoids

Contributed by

Pensoft Publishers

Language

English

Published by

Sofia, Bulgaria Pensoft Publishers

Identifiers

DOI: https://doi.org/10.3897/zookeys.1012.57047

 

Abstract

The family Symphytognathidae is reported from Thailand for the first time. Three new species:Anapistula choojaiaesp. nov.,Crassignatha seeliamsp. nov., andCrassignatha seedamsp. nov.are described and illustrated. Distribution is expanded and additional morphological data are reported forPatu shiluensisLin & Li, 2009. Specimens were collected in Thailand between July and August 2018. The newly described species were found in the north mountainous region of Chiang Mai, andPatu shiluensiswas collected in the coastal region of Phuket. DNA sequences are provided for all the species here studied. The relations of these symphytognathid species were tested using previously published phylogenetic analyses on micro orb-weavers. Also, we used micro CT analysis to build 3D models of the male genitalia and somatic characters of two species ofCrassignathaWunderlich, 1995. The molecular phylogeny and 3D models were used to discuss the taxonomy and circumscription of the currently valid symphytognathid genera, with focus onCrassignathaandPatuMarples, 1951. Based on this, three new combinations are suggested:Crassignatha bicorniventris(Lin & Li, 2009),comb. nov.,Crassignatha quadriventris(Lin & Li, 2009),comb. nov., andCrassignatha spinathoraxi(Lin & Li, 2009),comb. nov.A new record ofCrassignatha danaugirangensisMiller et al. 2014 is reported from Brunei.