Vol. 57, 2018
A Review of the Harvestman Genus Metadentobunus (Opiliones:
Sclerosomatidae: Gagrellinae) With A Description of A New Species From
Ssu-Li Chen1 and Hsi-Te Shih1,2,*
of Life Science, National Chung Hsing University, 250 Kuo Kuang Road,
Taichung 402, Taiwan
2Research Center for Global Change Biology, National
Chung Hsing University, 250 Kuo Kuang Road, Taichung 402, Taiwan
(Received 2 July 2018; Accepted 18 October
2018; Communicated by Benny K.K. Chan)
Ssu-Li Chen and Hsi-Te Shih (2018) The harvestman genus Metadentobunus is endemic to Taiwan, and has two taxa, M. formosae formosae Roewer, 1915 and M. formosae garampiensis Suzuki, 1944. The two subspecies have been raised as two species, and this study redescribes the type species M. formosae based on the type specimen and a neotype of M. garampiensis Suzuki, 1944 is assigned. A new species, Metadentobunus brevispinus
sp. nov., is also established from central Taiwan based on
morphological and molecular evidence. This new species differs from
other congeneric species by having one pair of shorter (than other
congeners) spines at frontal margin of the ocularium. It can also be
distinguished from M. garampiensis
by the basal shape of the penile shaft (constricted vs. parallel),
location of the seminal receptacle in ovipositor (5th-6th segment vs.
6th-7th segment) and number of ampullas in the terminal of the seminal
receptacle (2 vs. 3). Molecular evidence from mitochondrial 16S rDNA
and cytochrome oxidase subunit I (COI) further supports the identity of this new species. An identification key for this genus is included as well.
Key words: Metadentobunus brevispinus, M. garampiensis, Morphology, New species, Neotype, Redescription, 16S rDNA, COI.
*Correspondence: E-mail: firstname.lastname@example.org