Shilovia rara Makarchenko,

Makarchenko, Eugenyi A., Semenchenko, Alexander A. & Palatov, Dmitry M., 2020, Review of the genus Shilovia Makarchenko (Diptera: Chironomidae: Diamesinae Boreoheptagyiini) from the mountains of Central Asia, with morphological description and DNA barcoding of known species, Zootaxa 4895 (2), pp. 196-210: 199-202

publication ID

https://doi.org/10.11646/zootaxa.4895.2.2

publication LSID

lsid:zoobank.org:pub:8F5516C4-D6EC-46C1-8008-23683AB5DF6F

DOI

http://doi.org/10.5281/zenodo.4329116

persistent identifier

http://treatment.plazi.org/id/03830441-FFE5-FFD9-FF57-FC9D49FBFE23

treatment provided by

Plazi

scientific name

Shilovia rara Makarchenko
status

 

Shilovia rara Makarchenko 

( Figs. 1–9View FIGURES 1–9, 21, 24–25View FIGURES 21–27)

Shilovia rara Makarchenko, 1989: 140  ; Saether et al. 2000: 134, Ashe & O’Connor 2009: 106.

Material examined. 1 adult male (holotype), TAJIKISTAN: Varzod District , Gissar Ridge spurs, Varzob River near Kondara Gorge, 1100 m above sea level, 25.III.1987, N 38°48.677’, E 68°49.375’, leg. L. ZhiltsovaGoogleMaps  ; 2 adult males, KYRGYZSTAN: Tien Shan Mountains , Jalal-Abad Region , Chatkal District , Itelgi River , about 20 km above the mouth on the Chatkal River, under a serpentine road to the Chap-Chyma Pass, altitude 2401 m above sea level, 8.VI.2016, N 41°32.822’, E 70°46.459’, leg. D. Palatov.GoogleMaps 

Description

Adult male (n = 3, except when otherwise stated). Total length 1.5–2.5 mm. Total length/wing length 0.94– 1.11.

Coloration. Brown to dark-brown. Mesonotum brown to brownish yellow, as shown in Fig. 4View FIGURES 1–9. Legs spotted: basal 1/3 or half of femur and tibia yellow, distal 2/3 or 1/2 brown; ta 1 –ta 5 brown ( Fig. 2View FIGURES 1–9). Wings grayish to grey. Abdomen dark brown.

Head. Eyes bare. Temporal setae 37–51, including frontals, verticals, postorbitals which can not be easy separated ( Fig. 1View FIGURES 1–9). Clypeus with 4–9 setae. Palpomere length (μm): 28–36, 48–52, 68–79, 84–96, 116–148. Head width/ palp length 0.98–1.02. Antenna with 5 flagellomeres and reduced plume of setae ( Fig. 6View FIGURES 1–9); number and length of these setae on 1–4 flagellomeres respectively: 7–10 (44–64 μm), 4–6 (20–72 μm), 4–6 (24–64 μm), 4 (24–68 μm); terminal flagellomere with 2–4 setae, 28–40 μm in subapical and apical area. Flagellomeres 1–5 length (μm): 60, 28–36, 24–30, 24–32, 60–68; AR 0.41–0.44. Antennal length/palp length 0.52–0.63.

Thorax.Antepronotum with 10–12 ventrolateral setae, 44–68 μm long.Acrostichals 19–30, 10–16 μm long, start from anteropronotum, in 1–2 rows. Dorsocentrals 20–22, 16–24 μm long, in 2–3 rows in anterior 1/3, in posterior 2/ 3 in 1 row and they are not converge with acrostichal setae; prealars 22–30, 40–56 μm long, in 2–3 rows; supraalars 4–6, 32–40 μm long ( Fig. 4View FIGURES 1–9). Scutellum with 23–53 setae, 64–80 μm long. Postnotum without setae. Preepisternum with 5–15 setae, 32–40 μm long. MAII with 2–5 setae, 30–34 μm long.

Wing. Length 1.6–2.1 mm, width 0.56–0.60 mm. Costal extension 20–40 µm long. Anal lobe slightly reduced, rounded angular. Squama with 7–8 setae. R and R 1 with 27–38 setae, R 4+5 with 8–18 setae, R 2+3 absent, Cu with 6–23 setae ( Fig. 3View FIGURES 1–9). RM/MCu 2.0–2.2.

Legs. BR 1 0.9–1.3, BR 2 1.0–1.3, BR 3 1.0–1.1. Spur of front tibia 28–44 µm long. Spurs of mid tibia 32–44 µm and 32–40 µm long. Spurs of hind tibia 52–63 µm and 40–50 µm long. Hind tibial comb with 6–9 setae. Fore legs with 1–2 pseudospurs, 26–28 µm long on ta 1; middle legs with 2 pseudospurs, 28 µm long on ta 1; hind legs with 2 pseudospurs, 36–40 µm long on ta 1. Length (μm) and proportions of leg segments are as in Table 1.

Hypopygium ( Figs. 5, 7–9View FIGURES 1–9, 21, 24–25View FIGURES 21–27). Tergite IX with 80–84 setae, 20–32 µm long; posterior edge concave. Laterosternite IX with 3–5 short setae. Sternapodeme long and narrow, 80–82 µm long and 44–48 µm wide in basal part, 26–28 µm wide in subapical part ( Fig. 5View FIGURES 1–9). Aedeagal lobe weakly sclerotized, apical part hooked ( Fig. 25View FIGURES 21–27), 100– 118 µm long. Gonocoxite 340–368 µm long, with 44–56 µm long apical projection (“heel”) which densely covered with thin setae, 28–40 µm long, and “heel” posterior to gonostylus 0.35–0.44 times as long asgonostylus ( Figs. 8–9View FIGURES 1–9); inferior volsella in form of tubercle, densely covered with macrotrichiae and setae, 16–24 µm long; basal lobe of gonocoxite as in Fig.24View FIGURES 21–27. Gonostylus slightly curved in distal 1/4, 124– 128 µm long, in distal half covered with setae, 8–12 µm long, on the outer edge with a rounded extension, apically with a tooth and short megaseta ( Figs. 7–9View FIGURES 1–9, 21View FIGURES 21–27); gonostylus length/gonostylus width 3.1–3.2. HR 2.70–2.72.

Ecology. Adults were collected from stones and bowlders in mountain rivers, located at an altitude of 1100– 2401 m, at a flow rate of 0.3–0.6 m /s, with water temperature ca 12°C

Distribution. Known from the mountains of Tajikistan (Gissar Range) and Kyrgyzstan (Chatkal District, Tien Shan Mountains) ( Figs. 28–29View FIGURES 28–31).

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Diptera

Family

Chironomidae

Genus

Shilovia

Loc

Shilovia rara Makarchenko

Makarchenko, Eugenyi A., Semenchenko, Alexander A. & Palatov, Dmitry M. 2020
2020
Loc

Shilovia rara

Ashe, P. & O'Connor, J. P. 2009: 106
Saether, O. A. & Ashe, P. & Murray, D. A. 2000: 134
Makarchenko, E. A. 1989: 140
1989