Lecteria (Lecteria) wayana, Mederos & Pollet, 2019

Mederos, Jorge & Pollet, Marc, 2019, Three new species of Lecteria Osten Sacken, 1888 (Diptera: Tipulidae) from a scientific survey in Mitaraka (French Guiana), Zoosystema 41 (25), pp. 497-512 : 507-510

Lecteria (Lecteria) wayana n. sp.

( Figs 1J ; 8-10 )

urn:lsid:zoobank.org:act:74FDF083-3721-4A3B-A116-62ACB7560B2A

TYPE MATERIAL. — Holotype. ♂ in 70% ethanol. First label:“ FRENCH GUIANA, Mitaraka, MIT-C-RBF2, 02°14’03.4”N / 54°26’53.0”W, 299 m,‰ 6.III.2015, on vegetation along muddy trail and in swamp, SW, M. Pollet leg. La Planète Revisitée Guyane 2015, MNHN PNI, APA 973-1 /Sample code: Mitaraka/078”. Second label: “ Lecteria (Lecteria) wayana Mederos & Pollet det. 2017”. Third label: “ HOLOTYPE /ED10575” ( MNHN). Genitalia mounted on slide and labelled as follow: First label “ FRENCH GUIANA, Mitaraka, MIT-C-RBF2, 02°14’03.4”N / 54°26’53.0”W, 299m, 06.III.2015, M. Pollet leg.”. Second label “ Lecteria (Lecteria) wayana Mederos & Pollet det. 2017 HOLOTYPE ”.

DIAGNOSIS. — Lecteria wayana n. sp. can be distinguished by the color pattern of the pleura that offers a discrete effect of two very pale brown, almost white, transverse stripes in the middle of a brown background. Also typical is the dark brown mesoscutum, with two long pale brown longitudinal stripes in the center, parallel, and accompanied by another two, also pale brown, lateral stripes. Finally, the outer gonostylus is divided in two small spike-shaped processes apically, in addition to the aedeagal complex with the interbase featuring a deep cleft in the central posterior margin.

ETYMOLOGY. — The name of this species, a noun in apposition, refers to the Wayana people, one of the two Amerindian peoples that inhabit the territory where the species was found i.e., Maripasoula, French Guiana.

DESCRIPTION

Male (holotype)

Body length. 16.7 mm (without antennae); wing length 12.0 mm; antennal length 2.7 mm; length of terminalia 1.2 mm.

Head. Brown dorsally, lighter brown ventrally. Dorsally with a lighter, longitudinal and thin stripe. Maxillary palpus pale brown to gray ( Figs 8B ; 9A ), 4 palpomeres, ovoid, with the fourth longer than the third. Antenna ( Fig. 8C ) pale brown, 16-segmented. Scape and pedicel pale brown, latter with second half brown. Flagellum with 14 flagellomeres, pale yellowish to white, progressively paler (whiter) towards the apex. Flagellomeres 1 to 5 oval, decreasing in length towards antennal apex, longer and slightly wider than the remaining flagellomeres. As in Lecteria mitarakanea n. sp., basal 5 flagellomeres covered with short and thin microsetae and with one single verticil, except for the first segment of right antennal segment with two, the outermost verticil being the longest. Last 9 segments with 4 or 5 verticils, not covered with thin microsetae, and last flagellomere with 8 verticils.

Thorax. Brown to dark brown, with some pale brown areas. Pronotum brown to dark brown. Mesoscutum dark brown, with two very pale brown longitudinal stripes, parallel, from prescutum to almost transverse suture, both stripes separated by a thin grayish brown strip ( Fig. 9B ). Another two very pale brown lateral stripes, one at each side, of above mentioned stripes, reaching beyond the transverse suture. Scutellum brown. Mediotergite brown on basal half, yellowish pale to white in apical half. Anepisternum and katepisternum pale brown with a small brown area at anterior edge. Anepimeron with pale brown anterior half, and brown posterior half. Laterotergite with brown anterior half, and pale brown posterior half. This color pattern featuring a discrete effect of two very pale brown transverse stripes in the middle of a brown area: the first (anterior) stripe running from the upper part of anepisternum to the middle coxa, the second (posterior) stripe from the upper part of anepimeron to the posterior coxa ( Fig. 9A ). Halter with stem very pale brown, almost white, and knob pale brown.

Wing. Almost hyaline, with a very subtle brownish pale tinge, without spots or any color pattern except the light brownish stigmal area ( Fig. 8A ). Veins light brownish, distinct against the hyaline background color of the wing.

Legs. Coxae pale brown, almost white in dorsal half. All legs with the same color pattern. Femora pale brown in slightly more than basal half, followed by a brown band, another pale brown band, slightly shorter than more basal brown band, and finally another dark brown band at apex, approximately as long as the more basal pale brown band. Scarce, short brown setae in the basal half of femur, until the beginning of the most basal brown band, latter with many brown setae. The pale brown band, in between the two brown bands, with white setae. Tibiae with tibial spurs lacking; with basal short pale brown band, followed by a whitish equal-sized band. Next, the entire central extension pale brown, interrupted by another whitish band, longer than more basal whitish band, and short pale brown band at apex. Tarsi with tarsomere I almost completely pale brown, whitish at apex. Tarsomeres II to IV whitish, all subtle pale brown at extreme apex. Tarsomere V pale brown. All legs with many long setae in the colored bands, concolorous with the respective bands. Tarsal claws dark brown.

Abdomen. All tergites brown to dark brown, with some paler areas, without any distinct pattern. Sternites brown with some pale brown areas. Tergites and sternites progressively darker towards the apex of the abdomen. Sides of the abdomen with a dark brown stripe.

Terminalia. Tergite 9 dark brown, approximately twice as wide as long ( Fig. 10A ). Gonocoxite cone-shaped ( Figs 1J ;

10A, B ), almost cylindrical, about twice as long as wide. Outer gonostylus slightly longer than inner gonostylus. Outer gonostylus at apex divided in two small spike-shaped processes. Aedeagal complex ( Fig. 10C ): aedeagus short and straigh, not surpassing the interbase; interbase with a deep cleft in the central posterior margin.

Female

Unknown.

REMARKS

According to the key by Alexander (1969) L. wayana n. sp. would fit the species group with “a darkened pattern of wing restricted”, which includes L. armillaris and L. mattogrossae . These two species, described from specimens with broken abdomen and therefore of unknown sex ( Alexander 1969), however, show many differences with respect to L. wayana n. sp. Lecteria wayana n. sp. features brown pleura with two very pale brown, almost white, transverse stripes in the middle and a dark brown mesoscutum with two long pale brown longitudinal stripes in the center, parallel, and accompanied by another two, also pale brown, lateral stripes. On the contrary, in L. armillaris the mesonotum is reddish brown and pleura somewhat pruinose, with a row of brown spots, whereas L. mattogrossae shows a brown mesonotum with three darker brown bands, and grayish yellow pleura with a dark brown longitudinal stripe.

Figures

FIG. 1. — Terminalia of Neotropical species of Lecteria (Lecteria) Osten Sacken, 1888: A, L. acanthosoma Alexander, 1969; B, L. acanthostyla Alexander, 1969; C, L. bicornuta Alexander, 1969; D, L. cetrata Alexander, 1969; E, L. fuscitarsis Alexander, 1969; F, L. retrorsa Alexander, 1969; G, L. simplex Alexander, 1969; H, L. upsilon Alexander, 1969; I, L. calopus (Walker, 1856); J, L. wayana n. sp.; K, L. mitarakanea n. sp.; L, L. teko n. sp. A-H, modified by Alexander (1969); I, modified by Ribeiro & Blagoderov (2009).

FIG. 8. — Lecteria (Lecteria) wayana n. sp. male, holotype: A, wing; B, head; C, detail of the first antennal flagellomeres. Scale bar: A, 1 mm.

FIG. 9. — Thorax of Lecteria (Lecteria) wayana n. sp. male, holotype: A, lateral view; B, dorsal view. Scale bars: 1 mm.

FIG. 10. — Lecteria (Lecteria) wayana n. sp. male, holotype: A, terminalia, dorsal view; B, terminalia, ventral view; C, aedeagal complex (dorsal view). Scale bars: 0.5 mm.