Perlomyia

Murányi, Dávid, Jeon, Mi Jeong, Hwang, Jeong Mi & Seo, Hong Yul, 2014, Korean species of the genus Perlomyia Banks, 1906 (Plecoptera: Leuctridae), Zootaxa 3881 (2), pp. 145-154: 150-151

publication ID

http://dx.doi.org/10.11646/zootaxa.3881.2.3

publication LSID

lsid:zoobank.org:pub:51211576-5875-45F2-BBFD-164932141410

DOI

http://doi.org/10.5281/zenodo.3507102

persistent identifier

http://treatment.plazi.org/id/03D0E962-FFBF-FFBA-FF4B-FB1407A5E70E

treatment provided by

Plazi

scientific name

Perlomyia
status

 

Perlomyia   sp. Ko 1

( Figs. 25 –27 View FIGURES 25 – 30 , 33 View FIGURES 31 – 33 )

Rhopalopsole mahunkai Zwick, 1973   — Zwick 1973 a: 163. (a female was assigned as a paratype of P. mahunkai   ).

Literature data. Zwick 1973 a, under Rhopalopsole mahunkai   : ( North Korea), Bagyon san, San-chon-tong, about 20 km SE from Kaesong (North Hwanghae Province, Mt. Bakyon, San-chon tong, N 38 °05’ E 126 ° 35 ’), 0 8.06. 1970 (loc. Korea. 112), leg. Sándor Mahunka, Henrik Steinmann: 1 ♀ ( HNHM).

New material. North Korea, Kangwon Province, Kosŏng-gun, Kumgang Mts., swept along footpath from Kumgang-mun Gate to Kuryong Falls, N 38 ° 40 ’ E 128 ° 10 ’, 27.05. 1985 (loc. Korea 951), leg. András Vojnits, Lajos Zombori: 2 ♀; North Korea, Kangwon Province, Kosŏng-gun, Kumgang Mts., swept in forest at Kwinyon-am Rock, N 38 ° 40 ’ E 128 ° 15 ’, 28.05. 1985 (loc. Korea. 956), leg. András Vojnits, Lajos Zombori: 2 ♀.

Diagnosis. Female: Sternum VII rectangular, with a small hemispherical membranous area posteriomedially, not fused to sternum VIII. Median sclerites on sternum VIII are with dark brown inner keel; remainder of the sclerites light brown, shorter than the keel, the sclerites are much wider than long. Additionally, two pairs of sclerites are present at the lateral edges of median sclerites and at the posterolateral edge of the segment.

Description. Medium sized species, macropterous. Forewing length: females: 5.5 –6.0 mm. Head dark brown with distinct rugosities; antennae brown, palpi pale. Pronotum paler than head, one and half times longer than wide, much narrow than head; rugosities distinct. Meso- and metanotum brown, with longitudinally arranged dark brown patches; meso- and metathoracic basisterna with a pair of longitudinal dark stripes. Legs uniformly brown; wings hyaline, venation light brown. Pilosity generally short.

Female abdomen: Terga I –IX membranous, but with transverse row of four pigmented spots. Tergum X fully sclerotized. Sterna I –VI simple. Sternum VII rectangular, with a small, hemispherical membranous area posteriomedially; not fused to sternum VIII. A thin, horseshoe-shaped spermathecal sclerite is visible after KOHtreatment. Median sclerites on sternum VIII are with dark brown inner keel, that are longer than half of the segment’s length; their surface is wrinkled. Rest of the sclerites are light brown and bald, with inner halves shorter than the keel, the outer, partly separated halves are narrowing laterally; the sclerites are much wider than long. Longitudinally elongated dark patches are joined to the lateral edges of the median sclerites, further pair of rounded, dark sclerites are positioned on the posteriolateral edge of the segment; all these dark areas are setose, contrary to the median sclerites. The segment is membranous and bald posterio-medially. Sternum IX simple, sternum X medially connected. Paraproct and cercus simple.

Distribution and ecology. This species was collected in the central portion of the Korean Peninsula at the end of May and early June ( Fig. 33 View FIGURES 31 – 33 ). Sympatric species were P. kiritshenkoi   , P. mahunkai   , P. smithae   , Sweltsa colorata Zhiltzova & Levanidova, 1978   , females of a Nemoura   and an Alloperla   species at the Kumgang Mountains locality ( Korea. 956). It was found together with S. colorata   at the other Kumgang Mountains locality ( Korea. 951), and as a single specimen at the Mt. Bakyon locality ( Korea. 112).

Affinities. This species is very similar to P. martynovi   , known also only from females, but can be distinguished on the basis of the median sclerites, in Perlomyia Ko   1 the inner keels are longer than remainder of the sclerites, whereas the keels are slightly shorter in P. martynovi   ; in Perlomyia Ko   1, the remainder of the sclerites are wider and lighter; darker brown and narrower in P. martynovi   . The presence of inner keels on median sclerites distinguishes it from the other known Perlomyia   females. However, this species is not named because of possible being conspecific with one of the four Japanese species that are known only from males (P. a i nu Sivec & Stark, 2012 a, P. gifuensis ( Kohno, 1965)   , P. kappa Sivec & Stark, 2012 a   and P. parva (Kawai, 1967 ))   .

HNHM

Hungarian Natural History Museum (Termeszettudomanyi Muzeum)

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Plecoptera

Family

Leuctridae

Loc

Perlomyia

Murányi, Dávid, Jeon, Mi Jeong, Hwang, Jeong Mi & Seo, Hong Yul 2014
2014
Loc

Rhopalopsole mahunkai

Zwick 1973: 163
1973