Perlodinella kozlovi Klapálek, 1912

Huo, Qing-Bo, Du, Yu-Zhou, Zwick, Peter & Murányi, Dávid, 2022, Notes on Perlodinella Klapálek, 1912 (Plecoptera: Perlodidae) with a new species and a new synonym, Zootaxa 5162 (4), pp. 378-396 : 379-383

Perlodinella kozlovi Klapálek, 1912

Perlodinella kozlovi: Klapálek, 1912: 28 ; Wu, 1938: 28; 1973: 98; Claassen, 1940: 116; Ricker, 1952: 138; Illies, 1966: 388; Li & Murányi, 2015: 49; Yang & Li, 2018: 52.

Description and data: See Klapálek (1912) and Wu (1938). Original illustration ( Fig. 1 ) and type series of this species ( Figs. 2–3 ) are shown below.

Supplementary description: Male and female macropterous. General body color black, except ventral head and sides of female abdomen yellowish ( Fig. 4 ). Yellow spots present between the hind ocelli and median occiput, sometimes also on clypeus (at least four patterns in male and two patterns in female, see Figs. 5 , 9 ). Antennae are brown, palpi dark brown. Pronotum with a yellow median band. Wings brown, veins dark brown, sometimes slightly asymmetrical ( Fig. 6 ). Legs and cerci mostly dark brown.

Male: Terga 8–9 slightly sclerotized medially. Median hairs on tergum 8 thick and long. Tergum 9 bearing two sparse patches of sensilla, and a pair of small, sclerotized dots near the lateral margin. Tergum 10 sclerotized, caudally constricted and extended upwards, bearing multiple sensilla basiconica of similar size. Paraprocts divided into a basal sclerite and a subtriangular, eversible apical membrane covered with fine spines. Apical half of the sclerite slender, fingerlike, and straight, with a hook at tip ( Figs. 3 , 7–8 ). Epiproct membranous, with small, round, dorsal process on apex; ventral surface with asperities in a patch ( Fig. 8B–C ). Penis membranous, base with a pair of short arms bearing fine cuticular asperities; median part swelling and bearing larger asperities; apex bilobate, smooth on surface ( Fig. 8C–E ).

Female: Coloration similar to males ( Figs. 2 , 4 ). There are two morphs of female subgenital plates, with the posterior margin either truncate ( Fig. 9C ) or M-shaped ( Fig. 9D ).

Nymph: Unknown.

Egg: General color brown to dark brown. Slender, trilateral, with three longitudinal ridges ( Fig. 10 ). Collar is a short brown ring, cylindrical with a broad base. Anchor mushroom-shaped with massive stem, evenly covered with small globular bodies. Each side of the egg with 3–6 short transverse rows of micropyles.

Material examined: Lectotype male (present designation), paralectotypes 1 male, 2 females, China, Sichuan Province, Kham area, Yangtze River Basin , Yalong River , approximately 33°N, 98°E (see Li & Murányi 2015), 1901-IV, leg. P. K. Kozlov ( NMP); 18 males, 25 females, China, Qinghai Province, Haixi Mongol and Tibetan Autonomous Prefecture , Tianjun County, 2021-VII-13, 37.56869°N, 98.65726°E, 3545 m. Leg. Huo Qing-Bo, Zang Hao-Ming, Wang Ya-Meng, Sun Chen-Tao, Li Cong ( ICYZU).

Distribution: China (Tibet, Qinghai and Sichuan).

Remarks: Specimens were found in groups under rocks along the broad river shoreline ( Fig. 11 ). Tibetisoperla wangluyui Huo & Du, 2021 was also collected together with this species at the same time and environment.

Figures

FIGURE 1. Published illustrations of terminalia of Perlodinella kozlovi (from Wu, 1938).

FIGURE 2. Type series of Perlodinella kozlovi Klapálek, 1912. A: dried specimens (2 males, 2 females) deposited in NMP – the first male with the “Cotype” label is designated as lectotype; B: collecting labels of the lectotype.

FIGURE 3. Lectotype of Perlodinella kozlovi Klapálek, 1912, male terminalia.A: dorsal; B: ventral; C: everted epiproct.

FIGURE 4. Perlodinella kozlovi Klapálek, 1912 from Tianjun County, Qinghai, male and female habitus.

FIGURE 5. Perlodinella kozlovi Klapálek, 1912 from Tianjun County, Qinghai, male. A–D: head and pronotum with variable color patterns. The positions of variation are marked with red arrows.

FIGURE 6. Perlodinella kozlovi Klapálek, 1912 from Tianjun County, Qinghai, left and right wings of the same male, veins asymmetrical. Differences in wing cells are marked in red.

FIGURE 7. Perlodinella kozlovi Klapálek, 1912 from Tianjun County, Qinghai, male terminalia.A: dorsal; B: ventral; C: terga 9 and 10.

FIGURE 8. Perlodinella kozlovi Klapálek, 1912 from Tianjun County, Qinghai, male terminalia.A: paraprocts, caudal view; B: everted epiproct, dorsal view; C: everted epiproct and penis, lateral view; D: penis, dorsal view; E: penis, ventral view.

FIGURE 9. Perlodinella kozlovi Klapálek, 1912 from Tianjun County, Qinghai, female. A–B: head and pronotum with different color patterns, the positions of variation are marked with red arrows; C–D: variability of subgential plates, the outlines are marked in red.

FIGURE 10. Perlodinella kozlovi Klapálek, 1912 from Tianjun County, Qinghai, egg mass and single egg.

FIGURE 11. Perlodinella kozlovi Klapálek, 1912 from Tianjun County, Qinghai. A–B: adults under the rocks; C: the habitat.