Beardius mileneae, Pinho & Mendes & Andersen, 2013

Pinho, Luiz Carlos, Mendes, Humberto Fonseca & Andersen, Trond, 2013, Revision of Beardius Reiss et Sublette, 1985 (Diptera: Chironomidae), with the description of twenty new species, Zootaxa 3742 (1), pp. 1-78: 47-49

publication ID

http://dx.doi.org/10.11646/zootaxa.3742.1.1

publication LSID

lsid:zoobank.org:pub:78959DF2-CFF7-442A-B7B3-0B1A053A4D73

DOI

http://doi.org/10.5281/zenodo.5271939

persistent identifier

http://treatment.plazi.org/id/DB2587A5-E440-FFE4-FF19-670F7E3DF992

treatment provided by

Felipe

scientific name

Beardius mileneae
status

sp. n.

Beardius mileneae   sp. n.

( Figs 85–88 View FIGURES 85–88 )

Type material. Holotype: male, BRAZIL, Santa Catarina State: Urubici, São Joaquim National Park, Morro da Igreja , Rio Pelotas , 1670 m a.s.l., S28°07'37" W49°28'47", 18.viii–05.xii.2004, Malaise trap, L.C. Pinho & L.E.M. Bizzo ( MZSP) GoogleMaps   . Paratypes: 27 males, as holotype ( MZSP, INPA, ZMBN, MZUFBA, ZSM)   .

Diagnostic characters. The species belongs in the tupinamba   group. The male can be separated from all other members of the genus by the combination of the following characters: coloration brown; R 1 with setae; superior volsella with microtrichia; and basal projection of inferior volsella attached to basal 2/3 of the volsella, not overreaching the volsella, with fringe of lamellae.

Etymology. Named after Dr. Milene Hoehr de Moraes, the senior author’s beloved wife.

Description

Male (n = 9–10, except when otherwise stated). Total length 3.08–3.49, 3.28 mm. Wing length 1.72–2.10, 1.93 mm. Total length / wing length 1.59–1.84, 1.72. Wing length / length of profemur 2.24–2.46, 2.35.

Coloration. Head and abdomen light brown. Thorax stramineous with scutum, vittae, postnotum and preepisternum light to dark brown. Legs light brown.

Head. AR 0.84–0.92, 0.88; ultimate flagellomere 421–477, 439 µm long. Temporal setae 11–13, 12; not well separated in inner and outer verticals and postorbitals. Clypeus with 9–13, 11 setae. Tentorium 99–157, 121 µm long; 25–33, 29 µm wide. Stipes 124–142, 134 µm long. Palpomere lengths (in µm): 33–38, 35; 33–48, 43; 119– 154, 139; 106–149, 124; 121–159, 139. Third palpomere with 2–4, 3 sensillae subapically, longest 13–20, 15 µm long.

Thorax. Scutal tubercle absent. Dorsocentrals 6–9, 7; acrostichals absent; prealars 2–3, 2. Scutellum with 4–8, 6 setae.

Wing ( Fig. 85 View FIGURES 85–88 ). VR 1.32–1.59, 1.42. R with 8–14, 11 setae; R 1 with 5–9, 8 setae; R 4+5 with 2–27, 18 setae. Brachiolum with 2–3, 2 setae. Remaining veins bare.

Legs. Spur of fore tibia (including scale) 48–59, 54 µm long; spur of mid tibia (including comb) 64–86, 75 µm long; spur of hind tibia (including comb) 64–80, 75 µm long. Width at apex of fore tibia 48–59, 54 µm; of mid tibia 48–59, 54 µm; of hind tibia 59–70, 64 µm. Lengths and proportions of legs as in Table 15.

Hypopygium ( Figs 86–87 View FIGURES 85–88 ). Anal point bluntly triangular, 3–8, 5 µm long, not reaching posterior margin of tergite IX. Tergite IX without setae, tergal bands weak to absent. Laterosternite IX with 2–4, 3 setae. Phallapodeme 56–68, 63 µm long. Transverse sternapodeme 43–66, 58 µm long. Gonocoxite 124–152, 137 µm long. Superior volsella digitiform, curved, 48–58, 53 µm long, with 7–10, 8 dorsal, 2 apical, and 2–3, 2 ventral setae, with microtrichia on both dorsal and ventral surfaces. Median volsella 3–5, 4 µm long, with 2–3, 2 apical setae, longest 23–28, 25 µm long. Inferior volsella clavate, 66–83, 73 µm long, with 2 apical thin and 5–7, 6 subapical stout bifid to trifid setae; projection arising from basal 2/3 of the volsella, with microtrichia and fringe of lamellae ( Fig. 88 View FIGURES 85–88 ). Gonostylus 134–159, 142 µm long. HR 0.92–1.02, 0.96. HV 2.33–2.71, 2.50.

Female and immatures. Unknown.

Distribution. The species is collected in the Santa Catarina State in Brazil.

MZSP

Sao Paulo, Museu de Zoologia da Universidade de Sao Paulo

INPA

Instituto Nacional de Pesquisas da Amazonia

ZMBN

Museum of Zoology at the University of Bergen, Invertebrate Collection

ZSM

Bavarian State Collection of Zoology

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Diptera

Family

Chironomidae

Genus

Beardius