Kamimuria lyubaretzi Teslenko

Teslenko, Valentina A., 2006, A new species of Kamimuria (Plecoptera, Perlidae) from the Russian Far East, Zootaxa 1307, pp. 55-62 : 56-61

publication ID	https://doi.org/ 10.5281/zenodo.173792
DOI	https://doi.org/10.5281/zenodo.6261231
persistent identifier	https://treatment.plazi.org/id/039E8782-FF82-F702-4563-B466FDFD88CB
treatment provided by	Plazi
scientific name	Kamimuria lyubaretzi Teslenko
status	sp. nov.

Treatment

Kamimuria lyubaretzi Teslenko View in CoL sp. n.

( Figs. 1–13 View FIGURE 1 – 6 View FIGURE 7 – 9 View FIGURE 10 – 12 View FIGURE 13 )

Description. Adults triocellate and macropterous. General body color yellowishbrown. Male abdominal sternites 1–4 and 7 simple, well developed hairbrushes on sternites 5 and 6; in female, well pronounced hairbrushes on 5, 6 and 7 abdominal sternites. Head ( Fig. 1 View FIGURE 1 – 6 ) pale with dark brown ocellar rectangle, slightly expanded along anterior margins near callosities, interior of ocellar area paler; epicranial suture darkened; pale Mline between compound eyes, a light brown triangle anterior to Mline. Antennae, palpi and legs light brown, cerci pale. Pronotum ( Fig. 1 View FIGURE 1 – 6 ) pale with a narrow median pale band, rugosites brownish, anterior corners and lateral pronotal margins dark. Meso and metascuta with three large, rounded, heavily sclerotized, dark brown spots. Wings transparent, veins brown.

Male. Forewing length 14.2–17.5 mm. Tergites 8 and 9 mesally covered with sensilla basiconica ( Fig. 2 View FIGURE 1 – 6 ). The remnant of the epiproct ( Fig. 2 View FIGURE 1 – 6 ) consists of a pair of weak sclerites and a median membranous swelling. Hemitergites ( Fig. 3 View FIGURE 1 – 6 ) simple, short, fingerlike, sparsely covered with long setae and sensilla basiconica apically and medially on posterior edge. Aedeagus ( Figs. 4 & 5 View FIGURE 1 – 6 ) with oval membranous basal envelope. Tube weakly sclerotized, with poorly developed, small, flat sclerites; 7 small, brown spines arise near ventral tip of the tube, central spines a little larger than others. Sac membranous, short, round apically and bearing a pair of long brown heavily sclerotized spines ventrolaterally.

Female. Forewing length 18.7–20.8 mm. Subgenital plate ( Fig. 6 View FIGURE 1 – 6 ) wide and weakly produced over basal third of sternite 9. Sternites 6–8 with dark, mesal, Tshaped band. Sternite 9 ( Fig. 6 View FIGURE 1 – 6 ) with medial pale area. Vagina ( Fig. 7 View FIGURE 7 – 9 ) membranous, accessory glands absent; spermathecal stalk short; spermatheca resembling a large sac.

Eggs. Length 440 µm, width at equator 320 µm; collar short but wide, with ribs on the sides ( Fig. 10 View FIGURE 10 – 12 ); anchor mushroomshaped with long pedicel. Chorionic sculpturing in the form of puncturelike follicle cell impressions, impressions have equal depth on the equator and poles ( Figs. 11 & 12 View FIGURE 10 – 12 ).

First instar larvae. Body length (mean ± SD) 1064±43 µm (n=9), head capsule width across compound eyes 235±12 µm. Antennae ninesegmented, cerci threesegmented with the last segment only with fine apical sensilla, not setae ( Fig. 8 View FIGURE 7 – 9 ). Thoracic gills absent. Tarsi are threesegmented, the eyes have several ommatidia. A few short setae occur on the occiput, longer setae along the thoracic margins and along posterior margins of the abdominal segments.

Larvae. Length of mature male nymphs (excluding cerci) 12.5–13.5 mm (n=7), female 17.3–19.0 mm (n=5); cerci of males 11.0–11.5; cerci of female 13.0 mm. General body color pale brown with contrasting pale and brown pattern on dorsum of head and thorax ( Fig. 13 View FIGURE 13 ). Occiput with a few long hairs between epicranial arm and complete transverse occipital ridge.

Head ( Fig. 13 View FIGURE 13 ) with brown area delimited by epicranial arms, Mline and Tshaped spot forward of anterior ocellus pale; interocellar area brown with a small, paler, rounded spot; three pairs of pale spots aligned anterior of epicranial arms; occiput pale.

Pronotum ( Fig. 13 View FIGURE 13 ) dark brown on lateral pronotal fields and on anterior and posterior margins, lateral margins pale, median band brownish; disk with contrasting pale rugosities; lateral pronotal fringe complete, consisting of mixed long and short setae. Meso and metanotum ( Fig. 13 View FIGURE 13 ) with pair of anteromedial pale patches, interrupted by brown mesal band anteriorly; a pale spot posteromedially; wingpad bases pale, covered with thick setae anterolaterally; two rows long, sparse, mesal hairs arranged along ecdysial suture, may be more pronounced in younger larvae. Proventriculus with only major, longitudinal bands ( Fig. 9 View FIGURE 7 – 9 ), armed with up to 12 acanthae at base, 7 near midlength, and 10–12 near rounded swollen apex. Those at apex more heavily sclerotized than elsewhere. Legs covered with black clothing hairs. Tibia and tarsi unicolorous, pale, femora with brownish band anterodorsally; femora and tibia covered with short red setae, especially along dorsal and ventral margins, and fringed with silky swimming hairs along dorsal margins.

Abdominal terga unicolorous, brown ( Fig. 13 View FIGURE 13 ), covered with black clothing hairs and sparse intercalary setae; male abdominal sternites pale, female abdominal sternites 9 and 10 light brown; posterior tergal margins with fringe of stout, red setae and sparse long, fine setae; sparse mesal row of long black hairs pronounced on 7–10 abdominal terga. Cerci pale with ventral fringe of long, silky swimming hairs ( Fig. 13 View FIGURE 13 ) most numerous on basal segments. Anal gills absent.

Material examined: Holotype, male. Russia. Primorsky Region, Krounovka River, Razdolnaya River Basin (43º41.8129'N 131º36.5019'E), collected 19.VII.2004, reared, 21.VII.2004, V. Teslenko. Paratypes: 10 males, 6 females, reared, same place, 21–25.VII.2004; 12 larvae, same place, 19.VII.2004; female, Medvediza Stream, Krounovka River Basin, Razdolnaya River Basin (43º 33.7319'N 131º 27.8002'E), 14.VIII.2002, T. Tiunova; female, Kievka River Basin, near Laso settlement (43º 22.9126'N 133º 55.0280'E), 24.VII.2005, S. Storozhenko.

Distribution. This species was found in the southern Primorsky Region, mostly in the East Manchurian Mountains in the Krounovka River, Razdolnaya River Basin. The headwaters of the Razdolnaya River are situated in the East Manchurian Mountains, in China. Probably the distribution of K. lyubaretzi is not restricted to the Russian part of the Razdolnaya River Basin, but this requires confirmation.

Remarks. The male of K. lyubaretzi is similar to K. exilis (McLachlan) , K. tibialis (Pictet) , K. senticosa Harper , and K. himalayana Harper in external genital features ( Harper 1976, Zhiltzova & ZapekinaDulkeit 1986, Uchida & Isobe 1991). The new species has 7 small spines ventrally near the tip of the tube ( Figs. 4 & 5 View FIGURE 1 – 6 ) and a pair of longer spines ventrally on the sac ( Figs. 4 & 5 View FIGURE 1 – 6 ). These spines are lacking on tubes and sacs of K. senticosa , K. himalayana , K. crocea Harper, K. tibialis and K. uenoi Konho whose aedeagal armature have been illustrated by Harper (1976) and Uchida & Isobe (1991). How the male of K. lyubaretzi differs from the male of K. exilis is still unknown, because the aedeagus of K. exilis has not been described. According to preliminary examinations, the aedeagus of K. exilis has a few small and longer spines, which suggests similarity with K. lyubaretzi . To confirm or disprove this suggestion a study of the internal genital features of K. exilis should be carried out. The female genital plate of K. lyubaretze is wider than in the other species mentioned, and has no medial notch. The other Kamimuria species have a notched plate.

Eggs of Kamimuria lyubaretzi sp. n. remind one of the eggs of K. uenoi , but differ in depth of impressions on the chorion: chorionic impressions of K. uenoi are of variable depthand always deeper on the equator than on the poles ( Uchida & Isobe 1991). The depth of impressions on K. lyubaretzi eggs is the same from the equator to the poles ( Figs. 11 & 12 View FIGURE 10 – 12 ). The eggs of other Kamimuria species are unknown. Larvae of the new species differ from that illustrated for K. tibialis , K. uenoi and K. exilis ( Teslenko & Zhiltzova 1989) in that they lack the pale, Tshaped spot forward of the anterior ocellus ( Fig. 13 View FIGURE 13 ).