Wellsomina tam, Cartwright, David I., 2010

Cartwright, David I., 2010, Descriptions of 2 new genera and 13 new species of caddisflies from Australia (Trichoptera: Ecnomidae), Zootaxa 2415, pp. 1-21 : 8-10

publication ID

https://doi.org/ 10.5281/zenodo.194387

DOI

https://doi.org/10.5281/zenodo.6202146

persistent identifier

https://treatment.plazi.org/id/AA598020-186A-FF9E-9DE8-3FA9FD7118D6

treatment provided by

Plazi

scientific name

Wellsomina tam
status

sp. nov.

Wellsomina tam sp. nov.

Figs 12–14 View FIGURES 12 – 20 , 46 View FIGURES 45 – 53

Diagnosis. Males of this species can be separated from others in the genus by the distinctive semi-equally branched superior appendages.

Description. Head, body and wings light brown, abdomen paler ventrally; wings similar to those of W. stuarti ( Fig. 7 View FIGURES 7 – 11 ), length of forewing: male 2.4–2.8 mm, female 2.6–2.9 mm. Wing venation: forewing length nearly 3.5 times width; each with forks 2, 3, 4 and 5 present; fork 2 relatively short, fork 2 footstalk relatively very long, length about 2.0–3.6 times length of cross-vein r -m, length of fork 2 about 1.4–2.0 times length of fork 3; fork 3 short, length of fork 3 about 0.6–1.1 times length of footstalk, footstalk of fork 3 very long, length about 3.6–4.3 times length of cross-vein m. Hind wing length about 4.3 times width, each with forks 2, 3 and 5 present, all relatively short; fork 2 footstalk relatively long, length about 2.8–3.0 times length of crossvein r -m.

Male. Tergum X membranous with 2 lobes ( Fig. 14 View FIGURES 12 – 20 ), and ventrally directed intermediate process forming large apical spine (hidden in lateral views by ventral branches of superior appendages) ( Fig. 12 View FIGURES 12 – 20 ). Superior appendages branched, each with 2 semi-equal branches, inner dorsal branch with few apical spines on mesal lobe and single long spine on the outer lobe, outer ventral branch with 3 robust, spine-like setae apically ( Figs 12–14 View FIGURES 12 – 20 ). Phallus simple, tube-like ( Fig. 12 View FIGURES 12 – 20 ). Inferior appendages slightly depressed, fused in basal half, with pair of robust digitiform processes apically, separated widely in apical half by mesal split ( Fig. 13 View FIGURES 12 – 20 ); in lateral view slender, tapering slightly and upturned apically ( Fig. 12 View FIGURES 12 – 20 ).

Female. Genitalia with abdominal sternite VIII relatively broad, basally with robust, mesal process, tapered to apical point; segment IX relatively short, broad-based, tapered slightly distally, segment X relatively long, relatively robust with 1 pair of small cerci ( Fig. 46 View FIGURES 45 – 53 ).

Holotype male: Queensland, Dulhunty R., Telegraph Crossing, 11°50'S, 142°30'E, 8–9 Feb 1992, D. Cartwright and A. Wells ( NMV, T- 20747).

Paratypes. Queensland. 23 males (specimen CT-422 figured), 6 females (specimen CT-423 figured), collected with holotype ( NMV).

Other material examined. Queensland. 5 males, 4 females, same site and collectors as holotype, 10 Feb 1992; 1 male, 1 female, Bertie Ck, Telegraph xing, 11°50'S, 142°30'E, 5 Feb 1992, D. Cartwright and AW; 8 males, 7 females, Cockatoo Ck, Telegraph xing, 11°39'S, 142°27'E, 5–6 Feb 1992, D. Cartwright and AW; 4 males, 14 females, Cockatoo Ck-McDonnell Ck jn, 11°39'S, 142°28'E, 13–14 Feb 1992, D. Cartwright and AW; 36 males, 25 females, same site and collectors, 18 Feb 1992; 1 male, Upper Jardine R., Cape York Peninsula, 11°19'S, 142°37'E, 22 Oct 1979, M.S. and B.J. Moulds; 1 male, Upper Jardine R., Cape York Peninsula, 11°14'S, 142°36'E, 24 Oct 1979, M.S. and B.J. Moulds; 1 male, Jardine R., Cape York Peninsula, 11°09'S, 142°33'E, 13 Oct 1979, M.S. and B.J. Moulds; 1 male, Jardine R. xing, 16–17 Feb 1992, G. Byron and D. Black ( NMV).

Etymology. Tam - North Queensland aboriginal word for branch (superior appendages).

Remarks. This is a distinctive, relatively common species found on Cape York Peninsula, northeastern Queensland (latitudinal range 11°09'– 11°50'S).

NMV

Museum Victoria

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Trichoptera

Family

Ecnomidae

Genus

Wellsomina

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