Monographis tamdaoensis, Huynh, 2022

Huynh, Cuong, 2022, Four new species of Monographis Attems, 1907 (Diplopoda, Polyxenida, Polyxenidae) from Vietnam, Zootaxa 5214 (3), pp. 393-420 : 407-409

publication ID

https://doi.org/ 10.11646/zootaxa.5214.3.4

publication LSID

lsid:zoobank.org:pub:395A3FB5-DA5E-4145-B9EA-7801C67D6CE3

DOI

https://doi.org/10.5281/zenodo.7389482

persistent identifier

https://treatment.plazi.org/id/038987F7-BC1C-087C-9495-FA4F0CB99AA6

treatment provided by

Plazi

scientific name

Monographis tamdaoensis
status

sp. nov.

Monographis tamdaoensis new species

Figures 13–17 View FIGURE 13 View FIGURE 14 View FIGURE 15 View FIGURE 16 View FIGURE 17

Material examined: Holotype, adult male (IEBR-Myr 989) and paratypes: Adult, two males (IEBR-Myr 990) two females (IEBR-Myr 991) and, two subadults with 12 pairs of legs (IEBR-Myr 992) were collected from Tam Dao National Park , 21.458611N, 105.649444E, elevation 1017 m, Vinh Phuc Province, northern Vietnam. All types were deposited in the Institute of Ecology and Biological Resources , Vietnam. Specimens were collected by author CH in the field trip organised by Dr Duc Anh Nguyen, on 17 th July 2017. GoogleMaps

Diagnosis: Body length 2.4–3.2 mm. Antennal article VI with 16–18 bacilliform sensilla forming crescent shape, setiform sensillum located in anterior position, conical sensillum present near centre of crescent. Labrum asetose, long slender anterior setae in anterior margin. Telotarsus with posterior lateral process shorter than half-length of claw, anterior lateral and lamella processes present, anterior setiform process shorter than half-length of claw.

Description:

Holotype male body 2.4 mm; paratypes: males 2.2–2.4 mm, females 3.0– 3.2 mm; caudal bundle 0.5 mm, nest trichomes 0.2 mm.

Head: Arrangement of post vertex trichomes as for Monographis cattienensis with the holotype having 13 sockets (L) and 14 ( R) in anterior rows, posterior rows with 3 sockets on both sides ( Figures 13A & 13B View FIGURE 13 ). Paratype showed anterior rows with 12–14 sockets, posterior rows with 2–3 sockets ( Figure 16A View FIGURE 16 ). Clypeo-labrum: Holotype, labrum posterior margin with 8 setae (Se), these setae longer in length than labrum width (paratype with 8–10 setae). Labrum surface asetose (l), labrum posterior margin has a row of minute backward-pointing setae (sb). Lateral lamella (Ll) and single broad lamella each side median cleft (mc), 12–14 slender setae (sa) present on anterior margin of labrum ( Figures 13C View FIGURE 13 & 16D View FIGURE 16 ) .

Antennae: Antennal article VI with 16–18 bacilliform sensilla. Holotype with 16 bacilliform sensilla forming a crescent shape with 3 thick ( T), 9 thin bacilliform sensilla (t) and 4 medium-length thin bacilliform sensilla (tm), setiform sensillum (S) located in anterior position, conical sensillum (C) present near centre of crescent ( Figures 14C View FIGURE 14 , 17B &17C View FIGURE 17 ).

Telotarsus: Claw slender, posterior lateral process (p) shorter than half-length of claw, anterior lateral (a) and lamella processes (la) present, anterior setiform process (s) less than half-length of claw (c). ( Figures 15B View FIGURE 15 & 17D View FIGURE 17 ).

Telson: Arrangement of dorsal ornamental trichome sockets similar to M. cattienensis with 17 sockets of trichomes a left side and 18 sockets on right side of the telson in the holotype (paratype with 16–18 sockets). ( Figure 15C View FIGURE 15 ).

Remarks: Monographis tamdaoensis sp. n. is distinguished from congeners in its labrum structures and anterior setiform process equal to half-length of claw.

Etymology: Monographis tamdaoensis is named after Tam Dao National Park in Vinh Phuc Province, Vietnam.

R

Departamento de Geologia, Universidad de Chile

VI

Mykotektet, National Veterinary Institute

T

Tavera, Department of Geology and Geophysics

Kingdom

Animalia

Phylum

Arthropoda

Class

Diplopoda

Order

Polyxenida

Family

Polyxenidae

Genus

Monographis

GBIF Dataset (for parent article) Darwin Core Archive (for parent article) View in SIBiLS Plain XML RDF