Rumilara suppressa, Linský & Čiamporová-Zaťovičová & Laššová & Čiampor Jr, 2022

Linsky, Marek, Ciamporova-Zatovicova, Zuzana, Lassova, Kristina & Ciampor Jr, Fedor, 2022, Molecular phylogeny of the riffle beetle genus Hexanchorus revealed a presence of a new genus (Coleoptera: Elmidae), Arthropod Systematics & amp; Phylogeny 80, pp. 575-602 : 575

publication ID	https://dx.doi.org/10.3897/asp.80.e84013
publication LSID	lsid:zoobank.org:pub:4A6669D5-7DDD-4AE0-A8B4-55724B9C594A
persistent identifier	https://treatment.plazi.org/id/B916C413-2EFD-4C32-A539-070228BBD7C4
taxon LSID	lsid:zoobank.org:act:B916C413-2EFD-4C32-A539-070228BBD7C4
treatment provided by	Arthropod Systematics & Phylogeny by Pensoft
scientific name	Rumilara suppressa
status	sp. nov.

Treatment

3.2.4. Rumilara suppressa sp. nov.

Figs 2b View Figure 2 , 3b View Figure 3 , 5b View Figure 5 , 6b View Figure 6 , 7b View Figure 7 , 8b View Figure 8 , 9b View Figure 9 , 9f View Figure 9 , 12 View Figure 12

Material examined.

Type material: Holotype ♂ (PUCE) " Ecuador, Morona-Santiago prov., road Indanza - Gualaceo, second tributary of Rio Tinajillas , 03°00′37.5″ S, 78°37′09.1″ W, 2783m a.s.l., 26.8.2013, smaller stream ca 1.5m wide, not fast flowing, with mossy waterfall, mainly mesolithal, Čiampor Jr & Čiamporová-Zaťovičová lgt." GoogleMaps ; Paratypes 3♂♂, 2♀♀ (PUCE, CCB) with the same data as the holotype GoogleMaps ; 1♂, 1♀ " Ecuador, Napo prov., first stream in the Andes , 00°22′32.9″ S, 78°04′29.0″ W, 2723m a.s.l., 12.8.2013, fast flowing stream with a lot of smaller and larger rapids, Čiampor Jr & Čiamporová-Zaťovičová lgt." GoogleMaps ; 1♀ " Ecuador, Morona-Santiago prov., road Indanza - Gualaceo, fourth tributary of Rio Tinajillas , 03°00′41.9″ S, 78°36′32.9″ W, 2669m a.s.l., 26.8.2013, tall, narrow waterfall, underneath a pool with pebbles, gravel, wood, detritus, roots, Čiampor Jr & Čiamporová-Zaťovičová lgt." GoogleMaps Other material: 20 larvae with the same data as the holotype GoogleMaps ; 10 larvae " Ecuador, Morona-Santiago prov., road Indanza - Gualaceo, third tributary of Rio Tinajillas , 03°00′42.9″ S, 78°36′48.3″ W, 2739m a.s.l., 26.8.2013, montane stream ca 2m wide, mainly meso- and microlithal, occasional macrolithal, organic detritus, scarce mossy rocks, Čiampor Jr & Čiamporová-Zaťovičová lgt." GoogleMaps ; 1 larva " Ecuador, Napo prov., first stream in the Andes , 00°22′32.9″ S, 78°04′29.0″ W, 2723m a.s.l., 12.8.2013, fast flowing stream with a lot of smaller and larger rapids, Čiampor Jr & Čiamporová-Zaťovičová lgt." GoogleMaps .

Adult diagnosis.

The species can be distinguished by a combination of following characters: 1) head and clypeus fully clothed by pubescence; 2) femora bare or with a row of dark, long hairs on dorsal margin; 3) elytra without dense pubescence; 4) aedeagus without rod-like sclerite; 5) parameres strongly asymmetrical.

Adult diagnostic description.

Male. Colour: Body (Figs 2b View Figure 2 , 3b View Figure 3 ) black; lateral sides of femora and tibiae brown to pale brown; tarsal claws pale brown with reddish tincture. Pubescence: Head, except middle of frons, and clypeus clothed with short, prone pubescence, most densely set behind eyes, and with numerous slightly longer, curved, semi-erect, hair-like setae. Pronotum (Fig. 6b View Figure 6 ) covered by short, moderately dense, prone pubescence, and with slightly longer, curved, semi-erect, hair-like setae. Elytra at lateral and apical edges with short, recumbent pubescence, and with numerous moderately long, curved, semi-erect, hair-like setae. Femora with long, dark, densely set, hair-like setae near dorsal margin; pro- and metatibiae apically with a fringe of long, dark, hair-like setae on inner margin; mesotibiae without pubescence. Metaventrite very densely clothed with moderately long, golden, prone pubescence. Surface: Head, clypeus and pronotum sparsely microreticulate, partly concealed by pubescence. Elytra with rows of punctures deeply impressed; third interval slightly elevated in anterior 1/5; intervals 2-4 depressed from anterior 1/5 to 2/5 in lateral view. Prosternal process (Fig. 7b View Figure 7 ) subparallel between procoxae, then subtriangular with rounded apex. Aedeagus (Figs 12a-c View Figure 12 ) without long, dorsal, rod-like sclerite on penis; parameres asymmetrical, left one distinctly longer. - Female externally similar to male, except slightly larger.

Measurements.

♂ - CL: 2.87-3.10 mm; PL: 0.77-0.82 mm; PW: 0.82-0.91 mm; EL: 2.09-2.27 mm; EW: 1.12-1.22 mm. ♀ - CL: 2.86-3.18 mm; PL: 0.79-0.89 mm; PW: 0.89-1.01 mm; EL: 2.07-2.30 mm; EW: 1.19-1.33 mm.

Variation.

The greatest differences were observed in distribution of pubescence (mainly on legs, around eyes, partly on pronotum and elytra) due to its often removal.

Etymology.

From Latin suppressus (tucked in, contracted) due to its partly depressed elytral intervals 2-4.

Larva

(Fig. 9b, e View Figure 9 ) with length 4.46-4.88 mm, greatest width 1.21-1.28 mm. Pleurites on abdominal segments 1-4. Abdominal segments 1-3 explanate. Surface around the frontal pair of pronotal gibbosities of the same colour as the rest of pronotum. Tergum of abdominal segments 1-7 without a pair of distinct, longitudinally arranged small gibbosities.

Distribution.

Known from one locality in Napo Province (Fig. 16g View Figure 16 ) and three localities in Morona-Santiago Province (Figs 16h-i View Figure 16 ).