Beardius abbadi, 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: 18-20

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.5271883

persistent identifier

http://treatment.plazi.org/id/DB2587A5-E47F-FFC7-FF19-666979CFFB7E

treatment provided by

Felipe

scientific name

Beardius abbadi
status

sp. n.

Beardius abbadi   sp. n.

( Figs 13–15 View FIGURES 13–15 )

Type material. Holotype: male, BRAZIL, Amazonas State : Novo Airão, AM 352 Km 9, 123 m a.s.l., “Igarapé no Sítio do Sr. Valdenor”, #6, S02°42'04.5" W06°55'23.4", 11–14.viii.2008, Malaise trap suspended 3 m above the ground, A.M.O. Pes et al. ( MZSP) GoogleMaps   . Paratypes: 2 males, as holotype ( INPA)   . 1 male, Manaus, AM 010 Km 26, 43 m a.s.l., Adolfo Ducke Forest Reserve, #66, Afluente Igarapé Acará (Ig. 23), S02°57'07.4" W59°57'27.6", 04– 07.xi.2008, Malaise trap suspended 3 m above the ground, U.G. Neiss et al. ( ZMBN) GoogleMaps   . 1 male, Rio Preto da Eva , Ramal baixo do Rio, ponte Km 10, 14.iv.2008, at light, N. Hamada et al. ( ZSM)   .

Diagnostic characters. The species belongs in the parcus   group. The male can be separated from all other members of the genus by the ventral, narrowly triangular projection of the inferior volsella projecting caudad.

Etymology. Named after MSc. Guilherme Abbad Silveira for all help and encouragement.

Description

Male (n = 4–5, except when otherwise stated). Total length 2.00–2.30, 2.16 mm. Wing length 0.98–1.07, 1.03 mm. Total length / wing length 1.98–2.20, 2.11. Wing length / length of profemur 1.94–2.12, 2.04.

Coloration. Head, thorax and abdomen pale. Legs pale.

Head. AR 1.04–1.17 (3), ultimate flagellomere 449–487 (3) µm long. Inner verticals 0–1, 0; outer verticals 4– 6, 5; postorbitals 2–5, 4. Clypeus with 11–15, 13 setae. Tentorium 63–94, 78 µm long; 20–23, 22 µm wide. Stipes 111 (1) long. Palpomere lengths (in µm): 28–40, 33; 23–28, 25; 73–99, 83; 71–104, 96; 119–149, 139. Third palpomere with 2 sensillae subapically, longest 13–18, 15 µm long.

Thorax. Scutal tubercle absent. Antepronotum without setae. Dorsocentrals 5–6, 5; acrostichals absent; prealars 2. Scutellum with 4 setae.

Wing ( Fig. 13 View FIGURES 13–15 ). VR 1.34–1.47, 1.39. R with 2–6, 5 setae; R 4+5 with 1–2, 2 setae at apex. Brachiolum with 2 setae. Remaining veins bare.

Legs. Spur of fore tibia (including scale) 37–48, 43 µm long; spur of mid tibia (including comb) 54–75, 70 µm long; spur of hind tibia (including comb) 64–80, 70 µm long. Width at apex of fore tibia 37–48, 43 µm; of mid tibia 37–43, 40 µm; of hind tibia 37–48, 43 µm. Lengths and proportions of legs in Table 2.

Hypopygium ( Figs 14–15 View FIGURES 13–15 ). Anal point bluntly triangular, 4–8, 6 µm long, not reaching posterior margin of tergite IX. Tergite IX without setae, tergal bands absent. Laterosternite IX with 2 setae. Phallapodeme 40–48, 46 µm long. Transverse sternapodeme 28–33, 30 µm long. Gonocoxite 91–114, 104 µm long. Superior volsella digitiform, 30–43, 38 µm long, with 7–8, 7 dorsal and 4 ventral setae, with microtrichia on ventral surface. Median volsella 2–4, 3 µm long, with 2–3, 3 apical setae, longest 18–25, 23 µm long. Inferior volsella clavate, 40–51, 46 µm long, with 2 apical setae and 4–5, 4 stout and 2 thin setae subapically; projection narrowly triangular, arising from base of volsella, 8–15, 11 µm long, covered with microtrichia. Gonostylus 111–127, 119 µm long. HR 0.72– 1.00, 0.88. HV 1.74–2.18, 2.00.

Female and immatures. Unknown.

Distribution. The species is collected in the Amazonas 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