Mamersa rouxi Walter, 1911

Smit, Harry, 2017, New records of water mites from standing waters in Thailand, with the description of nine new species (Acari: Hydrachnidia), Zootaxa 4312 (1), pp. 69-91: 70

publication ID

https://doi.org/10.11646/zootaxa.4312.1.3

publication LSID

lsid:zoobank.org:pub:22847Cbb-05Ae-4839-834E-8Cc91796Ff9C

persistent identifier

http://treatment.plazi.org/id/D81487ED-782F-8A46-A0C1-7ACD7711D3F8

treatment provided by

Plazi

scientific name

Mamersa rouxi Walter, 1911
status

 

Mamersa rouxi Walter, 1911 

( Fig. 1View FIGURE 1)

Mamersa paddicola Jin & Guo, 1993  —new syn.

Material examined. 1/1/0, Nong Chang Yai Reservoir , Ubon Ratchathani Province, 15° 23.874ʹ N, 104° 49.756ʹ E, 25-x-2010. 

Description. See Walter (1911) and Viets (1935). Additional characters: Male idiosoma 834 long and 753 wide, female idiosoma 899 long and 826 wide. Genital field: male 259 long, and 316 wide, female 267 long and 332 wide. The male has an oblique anterior margin of the genital valve, in the female this margin is straight with a short medial extension. The pre-genital sclerite of the male is rhomboid in the male and triangular in the female. The configuration of the mediodorsal plates dg5 and dg6 (cf. Harvey1988) of both sexes is asymmetrical.

Remarks. Jin & Guo (1993) stated that, in describing M. paddicola Jin & Guo, 1993  , the new species differed in the presence of two pairs of posterolateral plates. However, they overlooked M. rouxi  , a species they did not mention in the paper. Their illustrations match the description of the latter species, and we therefore propose to synonymize M. paddicola  with M. rouxi  . The differences in the shape of the pre-genital sclerite and the genital valves was not mentioned by Viets (1935). The species is new for the fauna of Thailand. It has been found on the Aru Islands, Sumatra and Sulawesi ( Indonesia, Wiles pers. comm.), China and Thailand (present study).

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Trombidiformes

Family

Hydryphantidae

Genus

Mamersa

Loc

Mamersa rouxi Walter, 1911

Smit, Harry 2017
2017
Loc

Mamersa paddicola

Jin & Guo 1993
1993