Glyptotendipes (Glyptotendipes) paratestaceus, Saether, Ole A., 2011

Saether, Ole A., 2011, Glyptotendipes Kieffer and Demeijerea Kruseman from Lake Winnipeg, Manitoba, Canada, with the description of four new species (Diptera: Chironomidae), Zootaxa 2760, pp. 39-52 : 42-44

Glyptotendipes (Glyptotendipes) paratestaceus sp. n.

( Fig. 2 A, B)

Type materia l. Holotype male, CANADA: Manitoba, Lake Winnipeg, 3 km off George Island, 27.vi.1969, P.S.S. Chang ( CNC).

Diagnostic characters. The male imago is characterized by having the front legs coloured reddish-brown and much darker than the ochraceous to light reddish-brown middle and hind legs, the frontal tubercles which are about 1.5 times as long as their basal diameter, a BR1 of about 7.5, ta2/ta3 of front leg is about 1.04, and the scarlike mark on base of sixth tergite is about 0.4 times as long as the tergite and 1.3 times as long as the mark at the base of the second tergite.

Etymology. From Latin, para, equal, like, referring to the similarity to G. testaceus Townes.

Description. Male imago (n = 1)

Total length 8.76 mm. Total length 4.49 mm. Total length/wing length 1.95. Total length/length of profemur 3.07. Coloration blackish testaceous. Haltere knob brownish. Wing veins brown, wing very slightly tinged with brown and barely seamed with pale gray. Whole p l and coxa and trochanter of p2 and p3 dark reddish-brown, femur of p2 and p3 pale reddish-brown, ta l of p l and p2 ochraceous.

Head. AR 3.94. Temporals 41. Clypeus with 53 setae. Tentorium 235 µm long. Stipes 265 µm long. Frontal tubercles 16 µm long, 10 µm wide. Palpomere lengths (in µm): 61, 95, 272, 252, 340.

Thorax. Antepronotum bare. Dorsocentrals 36, prealars 9, scutellum with about 48 setae.

Wing. VR 1.05. Brachiolum with 4–5 setae, R with 30–35, R1 with 30–31, R4+5 with 16 setae. Squama with 34 setae.

Legs ( Fig. 2 A). Sensilla chaetica 36 at 0.49–0.92 of ta1 of p2, 1 at 0.50 of ta1 of p3, ta2 of p1 1.04 times as long as ta3. Bristle ratios of ta2–ta4 of p l as: 8.44, 9.50, 9.03. Lengths and proportions of legs as in Table 2.

fe ti ta1 ta2 ta3 ta4 ta5 LR BV SV BR p1 1462 1496 1832 908 874 756 269 1.22 1.71 1.61 7.5 p2 1647 1698 874 538 471 336 168 0.51 2.79 3.83 4.4 p3 1799 2152 1412 891 723 454 193 0.66 2.37 2.80 5.1 Abdomen. Lengths of scarlike marks on T II–VI/lengths of T II–VI as: 0.31, 0.36, 0.42, 0.42, 0.43. Scarlike mark of T VI 1.33 times as long as mark on T II.

Hypopygium ( Fig. 2 B).T IX with 11 oromedian setae and 56 setae near base of anal point, laterosternites IX each with 7–8 setae. Phallapodeme 206 µm long. Transverse sternapodene 116 µm long. Anal point 137 µm long. Gonocoxite 343 µm long; gonostylus 299 µm long. HR 1.15, HV 2.93.

Remarks. This species has a coloration like Glyptotendipes (G.) testaceus Townes (Townes 1945: 140) , but is otherwise more generally like G. (G.) paripes (Edwards) ( Townes 1945: 141 and present paper).

Figures

FIGURE 2. Glyptotendipes (Glyptotendipes) spp. A, B. G. (G.) paratestaceus sp. n. male; A – legs; B – hypopygium. C – E. G. (G.) barbipes (Staeger); C – hypopygium; D – female genitalia, ventral view; E – lobes of gonapophysis, apodeme lobe (ApL), ventrolateral lobe (VlL) and dorsomesal lobe (DmL).