Chaetocladius lopatinskiy Makarchenko et Makarchenko

Makarchenko, Eugenyi A., Makarchenko, Marina A. & Semenchenko, Alexander A., 2017, New or little-known species of Chaetocladius s. str. Kieffer, 1911 (Diptera: Chironomidae: Orthocladiinae) from the Amur River basin (Russian Far East), Zootaxa 4247 (3), pp. 313-330 : 320-322

publication ID

https://doi.org/10.11646/zootaxa.4247.3.5

publication LSID

lsid:zoobank.org:pub:DB177717-01CA-4575-93BC-06D0FAEEF769

DOI

https://doi.org/10.5281/zenodo.6029357

persistent identifier

https://treatment.plazi.org/id/7C0E87FE-FF88-FFE3-FF48-F9A2FA79F807

treatment provided by

Plazi

scientific name

Chaetocladius lopatinskiy Makarchenko et Makarchenko
status

sp. nov.

Chaetocladius lopatinskiy Makarchenko et Makarchenko , sp. nov.

( Figs. 19–28 View FIGURES 19 – 28 , 40–41 View FIGURES 40 – 44 )

Chaetocladius laminatus Brundin, 1947 ; Makarchenko et al. 2014: 424, misidentification.

Material. Holotype: adult male, Russian Far East, Jewish Autonomous Region, Obluchie District, Lopatinskyi Spring of Bidzhan River basin (Amur River basin), N 48°37' 810'', E 131°39' 114'', 31.III. 2015, leg. E. Makarchenko GoogleMaps . Paratypes: 1 mature pupa of male, the same data as holotype GoogleMaps , 31.III. 2 015; 2 males, 1 mature pupa of male, the same data as holotype except, Fedotkin Spring of Bidzhan River , N 48°38' 409'', E 131°37' 217'' GoogleMaps , 5. IV. 2014, leg. E. Makarchenko.

Adult male (n=3). Total length 3.5–4.0 mm. Wing length 2.28–2.76 mm. Total length/wing length 1.27–1.62. Colouration brown to dark brown.

Head. Eyes bare, with dorsomedian prolongation. Temporal setae include (from one side) 6–11 verticals and 5– 10 postorbitals. Clypeus with 8–10 setae. Antenna with 13 flagellomeres and well developed plume; top of flagellomere 13 pointed; AR 2.14–2.33. Lengths of palpomeres 2–5 (in µm): 60–64: 164–182: 164–172: 244– 264. Third palpomere in distal part with 10 sensilla clavata.

Thorax. Dark brown. Antepronotum with 2–7 lateral setae. Acrostichals 16–23, beginning close to antepronotum; dorsocentrals 11–15; prealars 5–6; scutellum with 6–8 setae in 1 row.

Wing. Halteres dark brown. R with 9–13 setae, R1 with 1–2 setae, R4+5 with 0–2 setae subapically. Costa extension 60–96 µm. Apex of R4+5 distal of apex M3+4. Cu1 curved in apical quarter. Anal lobe developed, rectangular-rounded. Squama with 13–16 setae.

Legs. Spur of fore tibia 64–84 µm. Spurs of mid tibia 28–32 µm and 24–28 µm long, of hind tibia 64–72 µm and 22–28 µm long; ta1 of fore leg with 0–2 pseudospurs; ta1– ta3 of mid and hind legs 2 pseudospurs. Hind tibial comb with 15–18 setae. Pulvilli small. Length (in µm) and proportions of leg segments as in Table 3 View TABLE 3 .

continued.

Hypopygium ( Figs. 19–22 View FIGURES 19 – 28 , 40 View FIGURES 40 – 44 ). Tergite IX with 24–35 long setae and narrow naked anal point 28–40. Laterosternite IX with 6–8 setae on each side. Transverse sternapodeme rounded, 144–156 µm long, with oral projections like tubercles. Virga 16–32 µm long, consists of 2–3 small spines. Gonocoxite 268–304 µm long; inferior volsella as a rounded projection covered with microtrichia and setae ( Figs. 19 View FIGURES 19 – 28 , 40 View FIGURES 40 – 44 ). Gonostylus 11 2–120 µm long, triangular shape, with megaseta 16 µm long and strong long seta close ( Figs. 19–21 View FIGURES 19 – 28 ). In some positions gonostylus might look like with projection ( Fig. 22 View FIGURES 19 – 28 ).

Pupa (n=2). Total length 4.0– 4.65 mm.

Cephalothorax. Frontal apotome with 2 setae 56–88 µm long. Antepronotum with 2 median and 1 lateral antepronotals 80–96 µm long. Thorax yellowish-brown and smooth. Thoracic horn 232–280 µm long, with pointed apex and covered with small spinules in distal 2/3, but sometimes spinules only in subapical part ( Figs. 23–25 View FIGURES 19 – 28 ). Precorneal setae hair-like, 64–112 µm long. Dorsocentrals hair-like, 44–120 µm long. Distance between Dc1 and Dc2 96–136 µm; between Dc2 and Dc 3 28–32 µm; between Dc3 and Dc 4 20–30 µm.

Abdomen. Tergite I with shagreen of not numerous spinules. Tergites II–VIII uniformly covered with shagreen spinules of one size and with large spines (20–44 µm long) along posterior edge ( Figs 26–28 View FIGURES 19 – 28 ); anal lobes with not numerous spinules in proximal part ( Figs. 27–28 View FIGURES 19 – 28 ). Sternites I–II without shagreen of spinules; sternite III with group of 7–16 spinules in middle part near posterior edge; sternites IV–VIII with shagreen of spinules as in tergites but spines near posterior edge not so large. Segment I with 0–1 pair of hair-like lateral setae. Segments II–VII with 2 pairs of seta-like lateral setae on tubercles and 2 pairs of hair-like setae. Length of lateral setae of segment IV: LS1 (seta-like on tubercle) 116 µm; LS2 (hair-like) 136 µm; LS3 (seta-like on tubercle) 116 µm; LS4 (hair-like) 80 µm. Segment VIII with 3–4 pairs of hair-like lateral setae 60–88 µm long. Anal lobe 280–320 µm long, with 3 spinelike macrosetae; anterior macroseta (AM1)104–136 µm long and 8 µm wide; middle macroseta (AM2) 148–168 µm long and 8 µm wide; posterior macroseta (AM3) 112–164 µm long and 8 µm wide. Distance from base of anal lobe to AM1 0.44–0.52 of anal lobe length. Distance between AM1 and AM2 64–80 µm; between AM2 and AM 3 24–32 µm. Location of anal megasetae illustrated in Figs. 27–28 View FIGURES 19 – 28 , 41 View FIGURES 40 – 44 . Male genital sac extending 40 µm beyond anal lobe.

Diagnostic characters. This new species is closely related to C. laminatus Brundin , but the pupa of C. lopatinskiy sp. nov. has a longer body (3.95–4.1 mm vs. 3.0– 3.5 mm), thoracic horn (232–280 µm vs 120–138 µm)

TABLE 3. Lengths (in µm) and proportions of leg segments of Chaetocladius lopatinskiy sp. nov., male (n = 3).

  fe ti ta1 ta2 ta3 ta4 ta5
P1 912–1024 1040–1200 704–800 400–480 320–352 192–240 144–160
P2 944–1088 1008–1136 464–512 280–320 224–256 144–176 128–144
P3 1008–1216 1184–1360 688–768 400–448 304–352 192–208 144–160

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Diptera

Family

Chironomidae

Genus

Chaetocladius

Loc

Chaetocladius lopatinskiy Makarchenko et Makarchenko

Makarchenko, Eugenyi A., Makarchenko, Marina A. & Semenchenko, Alexander A. 2017
2017
Loc

Chaetocladius laminatus

Makarchenko 2014: 424
2014