Thraulodes luizgonzagai, Lima, Lucas R. C., Mariano, Rodolfo & Pinheiro, Ulisses, 2013

Lima, Lucas R. C., Mariano, Rodolfo & Pinheiro, Ulisses, 2013, New species for Thraulodes Ulmer, 1920 (Ephemeroptera: Leptophlebiidae: Atalophlebiinae) and the first key to adults from Brazil, Zootaxa 3709 (3), pp. 230-242 : 232-235

publication ID

https://doi.org/ 10.11646/zootaxa.3709.3.2

publication LSID

lsid:zoobank.org:pub:1FC2BF4A-79A8-4C20-B95A-4B8CC0D45877

DOI

https://doi.org/10.5281/zenodo.6156361

persistent identifier

https://treatment.plazi.org/id/03F587C3-FFC7-B234-FF46-FD09C277FFA5

treatment provided by

Plazi

scientific name

Thraulodes luizgonzagai
status

sp. nov.

Thraulodes luizgonzagai sp. nov., Lima, Mariano & Pinheiro

( Figs. 2–3 View FIGURES 2 – 9 ; 10–11; 18–22)

Diagnosis. The male adult of this species can be separated from all the other congeners by the combination of the following characters: (1) costal membrane basal to bulla without cross veins ( Fig. 2 View FIGURES 2 – 9 ); (2) costal and subcostal zones of forewing translucent ( Fig. 2 View FIGURES 2 – 9 ); (3) two dark brown bands on femora ( Fig. 22 View FIGURES 18 – 22 ); (4) terga in dorsal view predominantly light brown, in lateral view translucent whitish, with three distinct spots on terga II–VI and one spot on terga VII–VIII ( Figs. 19–20 View FIGURES 18 – 22 ; (5) subapical spines of penes long and narrow, apicolateral area not forming an “ear”, lateral pouch present, and without recurved folds ( Fig. 10–11 View FIGURES 10 – 17 ).

Male imago. Length: body, 5.5 mm; forewing, 5.8 mm; hind wing, 1.1 mm; general coloration brown.

Head ( Figs. 18–19 View FIGURES 18 – 22 ): dark brown; antenna yellowish brown with scape lighter; upper portion of eye yellowish brown, lower portion black; ocelli white with a black ring at base.

Thorax ( Figs. 19–21 View FIGURES 18 – 22 ): general color of pro-, meso and metanotum chestnut, with sutures dark brown. Mesonotum with whitish cup-shaped spot on mesoscutelum, posterior region with scuto scutelar suture whitish. Pleura whitish washed with red. Pro- and mesosternum whitish; furcasternum dark brown.

Wings ( Figs. 2–3 View FIGURES 2 – 9 ): forewing membrane hyaline, with dark spot near base; costal and subcostal zones translucent; veins ICu2 and CuP not joined basally. Costal membrane basal to bulla without cross veins and 8 cross veins distal to bulla. Hind wing hyaline, with dark spot near base and 4 cross veins.

Legs ( Fig. 22 View FIGURES 18 – 22 ): femur with two dark brown bands; apical 1/3 of femur tinged with light brown and inner margin washed with black. Tibiae and tarsi light brown. Tarsi pale yellow.

Abdomen ( Figs. 18–20 View FIGURES 18 – 22 ): terga predominantly light brown. In lateral view translucent brown, with two isolated spots and two stigmatic dots on terga III–VI, and one isolated spot and a blackish stripe on terga VII–IX. In dorsal view, terga segments I, VII–IX brown and II–VI translucent with posterior margin light brown. Terga segments I– III and VI–VII medially with blackish dorsal mark. Sterna I–VI translucent and VII–X brown.

Genitalia ( Figs. 10–11 View FIGURES 10 – 17 ): forceps pale yellow, segment II washed with black. Posterior margin of subgenital plate almost straight, with a medial rounded projection. Penes pale yellow; 2/3 of penes divided apically, with a pair of long and narrow subapical spines, 2.0x the width of penes; apicolateral area not forming an “ear”; external margin forming lateral pouch and without recurved folds parallel to inner margin. Terminal filament whitish, basal area of segments black.

Variations: Some specimens show color patterns overall darker ( Fig. 18 View FIGURES 18 – 22 ) or lighter ( Fig. 19 View FIGURES 18 – 22 ), due to alcohol fixation period making them paler.

Female and nymph. Unknown.

Type material. Holotype: one male imago, Brazil, Bahia State, Juazeiro, Rio São Francisco, 9°25'04.3"S, 40°28'50.9"W, 362m, 05.x.2011, L.R.C. Lima coll. ( MZUESC). Paratype: same data as holotype, three male imagos (1 CZNC and 2 MZUESC); one male, Brazil, Pernambuco State, Petrolina, Base Fluvial Ilha do Fogo, Rio São Francisco, 9°24'22.9"S, 40°30'17.4"W, 362m, 09.x.2011, L.R.C. Lima coll. ( UFPE); two male imagos, Brazil, Pernambuco, Petrolina, Rio da Vitória, afluente do Rio São Francisco, 09°21'814''S, 40°35'409''W, 440 m, 22.x.2008 - luz UV e branca, Calor, Mariano & Mateus colls.

Etymology. The specific epithet is a tribute to Luiz Gonzaga, famous singer from the state of Pernambuco, who sang beautiful songs about the semi-arid region of Pernambuco, collection site of the new species.

Remarks. Thraulodes luizgonzagai sp. nov. appears to be more related to T. paysandensis Traver, 1964 . Both are small species (with body length up to 8 mm), with femora twice banded, and lobes of penes showing lateral pouch and long and narrow subapical spines. Nevertheless, the new species differs from T. paysandensis by the abdominal color pattern, the shape of medial projection of styliger plate (narrow and rounded in the new species, dome-shaped in T. paysandensis ), and by the absence of recurved folds on penes.

MZUESC

Museu de Zoologia da Universidade Estadual de Santa Cruz

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