Kribiodorum pulchrum Kieffer 1921
Creators: name: Cranston, Peter S.
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Chironomidae
Kribiodorum
Kribiodorum pulchrum

description: Kribiodorum pulchrum Kieffer, 1921
(Fig. 2D,I)
Kribiodorum pulchrum Kieffer, 1921: 46; Epler et al., 2013; Ekrem et al., 2018.
Lauterborniella pulchra (Kieffer); Freeman, 1958: 321.
Stelechomyia pulchra (Kieffer); Reiss, 1990: 300.
Material examined. 4 Ƌ, 4♀, Elfenbeinküste [IVORY COAST] leg. C. Déjoux (ZSM); 1 Ƌ, A.E. Sudan [SUDAN], Khartoum, 'at light'. x.1952 (D.J. Lewis) B.M. 1953–679 (ZSM); 1 Ƌ, Zaire [error: DEMOCRATIC REPUBLIC OF CONGO], Irangi, Fluss Luoho, 3– 7.3.1984 (E.G. Burmeister).
Description. Male (n=2–6 variably badly preserved and/ or mounted; missing especially many leg parts.) Freeman 1958 in []).
B.l. 3.1–3.2, W.l. 1.6–1.86 mm [1.75–2.0].
Head: Antenna Fl1–12 420–500, Fl13 550–575, A.R. 1.1–1.37 [about 1]. 23–30 clypeals, 5 aligned verticals. Palpomeres (2–5) 35–37, 110–125, 185–200, 175–200.
Thorax. Ac? 7–9, Dc 8–9 with 1 in humeral position; Pa 2–3, Scts 4.
Wing. Pattern as in female. V.R. 1.25. Vein setation: R with 14–16, R1 with 7–10, R4+5 with 16–18 in distal half only.
Legs with P1 femur dilate, 2x width at apex compared to base, distal 1/3 dark with dark setae, tibia pale with darkened distal 1/4, tarsomere1 distally dark, all other tarsomeres darkened. Lengths: P1 850–980, 510–560, 1060– 1350, 590–700, 410–450, 370–400, 170–180; P2 700–800, 550–560, 380–400, 140, 90–100, 50–60, 40–50; P3 920– 930, 750–800, –; Calculable ratios: LR1 1.96–2.6 ['about 2'], BV1 1.63; SV1 1.1–1.3; LR2 0.73, BV2 5.16, SV2 3.1. Foretibial spine 50 long, slender, curved outward.
Genitalia (Fig. 2D, I). TIX with cluster of 11–12 strong anal tergite setae extending to near base of anal point and apex of TIX. Anal point spatulate, protruding from anal tergite by 34. Superior volsella (Fig. 2I) 37–50 long, curved, tapering from microtrichiose base evenly to fine point. mv squat, 10–12, with 6 fine setae. Gcx 62, bulging, Gst 130, with tapered and curved apex.
Female (n=1–3) B.l. 3.4–3.9 mm, W.l. 1.7–1.8 mm. Head: Antenna flagellomere lengths 42–50, 38–57, 58–65, 65–67, 65–68, 100–113, A.R. 0.36–0.38; paired hyaline sensilla 25–30 long. 31 long clypeals, 3–4 aligned verticals. Palpomeres 25–35, 130–157, 220–227, 175–250.
Thorax. Ac uncountable, Dc 8 with 1 in humeral position; Pa 3–4, Scts 2.
Wing. Pattern as in Fig. 1C (from Freeman 1958: plate 2o). V.R. 1.27. Vein setation: R with 13–17, R1 with 14– 16 and R4+5 with 17–18.
Legs. All fore-femora slightly dilate, all depilate, thus length, strength and pigmentation of distal setae not discernible. Leg lengths: P1 1050, 550, –; P2 760–800, 580–650, 365–400, 150–170, 60–70, 55–60, 50–60; P3 1100, 880, –. Calculable ratios: LR2 0.61–0.63, BV2 5.1–5.5, SV2 3.61–3.67; Foretibial scale 50 long, gently curved (Fig. 1F).
Genitalia. Seminal capsule (Fig. 3D) pale, ovoid- spherical, 70 x 53, with thin neck prior to thicker-walled, gently curved spermathecal duct, becoming slightly dilate prior to fusion at apparent common opening. Cerci large, quadrate, 110 long by 88 wide in lateral view.
description: Published as part of Cranston, Peter S., 2018, Kribiodorum Kieffer (= Stelechomyia Reiss) (Diptera: Chironomidae) extends into the Oriental region: three new species and expanded diagnoses, pp. 535-547 in Zootaxa 4486 (4) on pages 542-543, DOI: 10.11646/zootaxa.4486.4.7, http://zenodo.org/record/1442332