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Classification
Allodia rindeni Kjaerandsen, 2007
Distribution of Allodia rindeni
Allodia rindeni distribution
- General description:
The text is based on Kjærandsen (2007): Two new species of Allodia subgenus Brachycampta Winnertz from Norway and Sweden (Diptera: Mycetophilidae).
Diagnostic description:Allodia rindeni belongs to the Allodia barbata-group as defined by Kjærandsen (2007). Judged by characters of the male terminalia it is closest to Allodia racemosa and Allodia huggerti. It can be separated from the former in having hypandrial lobe with a basal cordate cushion covered with trichia and an apical blunt hook, and from both in having large, setose apicoventral projections from the gonocoxite. Unlike in Allodia huggerti the second flagellomere is distinctly longer (1.67– 1.72 x) than wide, the medial branch of gonostylus is apically club shaped with small, stiff setae, and the ventral branch of gonostylus is smaller and apically tapered.
Morphology:Male (n = 2).
Coloration: (paratype, moderately paled after 10 years in alcohol). Scape pedicel and first half of first antennal segment yellow, rest of flagellum light reddish brown. Palp and mouth parts pale yellow. Head and clypeus dark brown. Mesonotum dark brown without yellow humeral areas and thoracic stripes. Propleuron pale brown, rest of pleura dark brown. Scutellum and mediotergite dark brown. Wings pale yellowish tinted, without fascia. Halters pale yellow. Legs all yellow. Abdomen reddish brown with large yellow patches laterally on tergite II–V forming yellow triangles anterolaterally on tergite III–IV. Terminalia yellow.
Head: Round, width / length to frontal tubercle 1.39–1.44. Antenna 1.22–1.34mmlong. First flagellomere 1.67–1.72 times as long as second flagellomere. Second flagellomere 1.33–1.67 times as long as wide. Two ocelli present, set close to compound eyes. Clypeus ovate, length / width 1.22–1.34. Antepenultimate segment of maxillary palp 0.08–0.1 mm long, palpomere ratios 1: 1.34–1.56: 2.34–2.84.
Thorax: Proepisternum with 1–2 strong and one weaker bristles. Scutum with strong prealar and postalar bristles, and single row of large dorsocentrals extending entire length of scutum. Otherwise covered with small pale, decumbent setae. Scutellum with one pair of strong bristles.
Wings: Stem of radius with dorsal setae only, R1 and R5 with both dorsal and ventral setae. Rs, ta, tb, M and Cu without setae. Wing length to length of R1 2.5–2.51. R5 straight, wing length to length of R5 1.84–1.85. Length of ta to length of M-petiole 1–1.18. Fork length ratio (A/B) 1.48– 1.61. Fork width ratios (C/D and E/F) 1.1–1.15 and 0.62–0.68. M-ratios 0.64–0.66 and 0.7–0.72. CuA-ratios 0.42–0.47 and 0.51–0.52. CuP length to length of wing 0.45–0.48. A1 length to length of wing 0.24–0.26.
Legs: Mid tibia with 14–16 anterior, 3–4 posterodorsal, 3–5 posterior, 5 posteroventral bristles, and 3 short, spinules-like setae apicoventrally. Hind tibia with 5–6 anterior, 4 posterodorsal bristles, and 4 short, spinules-like setae apicoventrally. Leg ratios given for fore, mid and hind leg: LR 1.11–1.13: 1.05–1.09: 0.84–0.85; SV 1.71–1.79: 1.86–1.91: 2.33–2.35; BV 1.47– 1.53: 1.88–1.9: 2.6–2.7; TR 1.56–1.67: 1.8–1.89: 2.26–2.3.
Terminalia: Gonocoxite (A) open dorsally and divided ventrally; with large, setose projections apicovetrally. Hypandrial lobe (B) prominent, ventrobasally with narrow cordate cushion, covered with strong trichia; apically forming a blunt hook projected ventrad, narrow trapezoid in ventral view. Hypoproct large, medially produced to a bluntly tapered plate with two bristles and some small setae. Gonocoxal apodeme long, narrow, sclerotized. Accessory copulatory appendages hyaline and difficult to interpret; forms a semicircular plate with a small ejaculatory apodeme and a pair of small parameres. Gonostylus (C) with five branches. Basal half of dorsal branch club shaped covered with dorsal setae; apical half slender, slightly sinusoid, apically with some tiny stiff setae. Dorsointernal branch absent. Medial branch basally slender; apically with a caudally directed club, bearing row of short stiff setae. Ventral branch with some long lateral setae; gradually tapered to a long, slender digitus; apically with row of 6 setae. Internal branch forms a subcircular pouch, partly striated, ventroapically with two strong setae. Anterior branch present as tapered hyaline lobe, devoid of setae. Tergite IX (D) reduced to medially divided, narrow plates; each with two strong bristles. Cercus small, tapered apically, in dorsal view 3.18–3.22 times as long as basally wide.
Female unknown.
Size:Male (n=2): Total length 3.5–3.8 mm.Wing length 2.5–2.66 mm, or 3.55–3.57 x as long as profemur. Mesonotum length 0.68–0.75 mm, or 0.27–0.28 x as long as wing.
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