Lecteria (Lecteria) mitarakanea, 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 : 499-504

Lecteria (Lecteria) mitarakanea n. sp.

( Figs 1K ; 2-4 )

urn:lsid:zoobank.org:act:E4CC2B03-818D-48F8-B2F0-646882BBE942

TYPE MATERIAL. — Holotype. ♂ in 70% ethanol. First label:“ FRENCH GUIANA, Mitaraka, MIT-DZ-RBF2, 02°13’59.3”N / 54°27’00.3”W, 283 m, 28.II.2015 - 5.III.2015, M. Pollet leg. La Planète Revisitée Guyane 2015, MNHN PNI, APA 973-1 /Sample code: Mitaraka/177”. Second label: “ Lecteria (Lecteria) mitarakanea Mederos & Pollet det. 2017”. Third label: “ HOLOTYPE /ED10572” ( MNHN). Genitalia mounted on slide and labelled as follow: First label “ FRENCH GUIANA, Mitaraka, MIT-DZ-RBF2, 02°13’59.3”N / 54°27’00.3”W, 283 m, 28.II.2015 - 5.III.2015, M. Pollet leg.” Second label “ Lecteria (Lecteria) mitarakanea Mederos & Pollet det. 2017 HOLOTYPE ” . Paratypes. 1 ♀ in 70% ethanol. First label: “ FRENCH GUIANA, Mitaraka, MIT-DZ-RBF2,‰ 2°13’59.3”N / 54°27’00.3”W, 283 m, 28.II.2015 - 5.III.2015, M. Pollet leg. La Planète Revisitée Guyane 2015, MNHN PNI, APA 973-1 /Sample code: Mitaraka/177”. Second label: “ Lecteria (Lecteria) mitarakanea Mederos & Pollet det. 2017.” Third label: “ PARATYPE /ED10573” ( MNHN) . — 1 ♂ in 70% ethanol. First label: “ FRENCH GUIANA, Mitaraka, MIT-C-SL, ( MIT08 ), 02°14’07.7”N / 54°26’41.5”W, 373 m, 02.III.2015 - 8.III.2015, tropical moist forest (slope), M. Pollet leg. La Planète Revisitée Guyane 2015, MNHN PNI, APA 973-1 /Sample code: Mitaraka/132”. Second label: “ Lecteria (Lecteria) mitarakanea Mederos & Pollet det. 2017” Third label: “ PARATYPE / MZB 2017-1500 ” ( MCNB) . — 1 ♀ in 70% ethanol. First label: “ FRENCH GUIANA, Mitaraka, MIT-DZ-RBF1, 02°14’03.6”N / 54°27’02.3”W, 270 m, 26.II.2015 - 2.III.2015, tropical wet forest (bas-fond), M. Pollet leg. La Planète Revisitée Guyane 2015, MNHN PNI, APA 973-1 /Sample code: Mitaraka/175”. Second label: “ Lecteria (Lecteria) mitarakanea Mederos & Pollet det. 2017”. Third label: “ PARATYPE / MZB 2017-1499 ” ( MCNB) .

DIAGNOSIS. — Lecteria mitarakanea n. sp. can be distinguished from all other Neotropical Lecteria by the outer gonostylus extending into a single decurved process at apex, with the outer apical angle featuring a rounded pale crest ( Figs 1K ; 4 ), in combination with the morphology of the aedeagal complex: aedeagus short, not surpassing the interbase and parameres almost parallel. In ad- dition, also distinct are the yellowish brown scape and pedicel, the first flagellomere with yellowish brown basal half (the apical half brown); and the tarsi ( Fig. 2E ) with tarsomere I almost completely brown to pale brown, with apical ¼ white, tarsomeres II to IV white, with pale brown apex (apical third in tarsomere IV) and tarsi V entirely pale brown.

ETYMOLOGY. — The name of this species is a latinized adjective which refers to the place where the species has been found, the Mitaraka massif in French Guiana.

DESCRIPTION

Male (holotype)

Body length. 13.2 mm (without antennae); wing length 12.3 mm; antennal length 2.5 mm; length of terminalia 1.0 mm.

Head. Dark brown dorsally, slightly lighter ventrally. Maxillary palpus dark brown, four palpomeres, ovoid, progressively shorter towards the apex. Antenna ( Fig. 2C ) brown, 16-seg- mented. Scape and pedicel yellowish brown. Flagellum with 14 flagellomeres, brown with basal half of first flagellomere yellowish brown. Flagellomeres 1 to 5 oval, decreasing in length towards apex, longer and slightly wider than the remaining flagellomeres. Flagellomeres 1-5 covered with short and thin microsetae and with just one verticil, except the first segment with two ( Fig. 2D ), the outermost verticil being the longest (latter character consistent in all examined specimens). The remaining flagellomeres with four or five verticils, not covered with thin microsetae, and the last flagellomere with eight verticils.

Thorax. Brown to yellowish brown. Pronotum yellowish brown. Mesoscutum brown, slightly yellowish brown in longitudinal central area, from prescutum to transverse suture. Scutellum brown. Mediotergite brown, dark brown at both lateral edges. Cervical sclerite brown. Anepisternum and anepimeron brown to yellowish brown, with a dark brown longitudinal stripe ( Fig. 3 ), occupying the entire central part of the anepisternum and the upper part of the anepimeron. Lower half of anepimeron yellowish white. Membraneous area adjacent to the anterior spiracle and the anepisternum pale yellow, almost white, giving the effect of a white longitudinal stripe contrasting with the more ventral dark brown longitudinal stripe described above. Laterotergite pale brown on its dorsal half (anatergite), almost yellowish white on ventral half (katatergite). Katepisternum yellowish brown in its upper two thirds, lower third brown. Meron, metakatepisternum and metanepisternum pale brown to yellowish.Halter with stem and knob pale brown, white at basis.

Wing. With pale brown background tinge ( Fig. 2A ), distal half slightly darker, and relatively well defined small brown spots at basis of Rs, R 2+3+4, base of R 5, at R 1+2 (stigma area) and at apex of R 3. Less obvious, poorly defined brown areas at vein r-m, transverse veins of cell dm, at bifurcation of M 1 and M 2, in basal transverse section of CuA 1 and a small dot midway of (and just below) A 1.

Legs. Coxae white, with dorsal apex yellowish to yellowish brown. Trochanters pale brown. All legs ( Fig. 2E ) with the same color pattern. Femora yellowish brown in basal half or slightly more, slightly yellowish towards middle, followed by a dark brown band, another yellow band (subequal in length to anterior brown band) and finally another dark brown band at apex. Scarce and short setae in basal half of femur, until the beginning of the first brown band. Tibiae without tibial spurs, strongly annulated with brown to dark brown and white bands (see Fig. 2E ). All tarsi ( Fig. 2E ) with the same color pattern. Tarsomere I almost completely brown to pale brown, with apical ¼ white. Tarsomeres II to IV white, with pale brown apex (apical third in tarsomere IV). Tarsomere V entirely pale brown. Tarsomeres I to IV with extreme apex pale brown. In all legs, abundant and long setae with the same color as the respective band. Tarsal claws dark brown to black.

Abdomen. All tergites yellowish brown to pale brown, sternites white.Tergites with a narrow dark brown stripe laterally, giving the abdomen the appearance of a continuous dark brown line, along its entire length, separating the yellowish brown dorsal part from the ventral white one. All tergites with a pale brown stripe on anterior and posterior margins, the anterior stripe wider and darker, discretely highlighting the yellowish brown background above. This color pattern paler towards the apical sternites.

Terminalia. Tergite 9 pale brown, approximately twice as wide as long ( Fig. 4C ), gonocoxite cone-shaped, approximately 1.5 × as long as wide ( Fig. 1K ). Inner gonostylus slightly longer than outer gonostylus. Outer gonostylus extending at apex into a single curved process, forming an apical hook, its outer apical angle with a short and rounded pale crest before apex. Aedeagal complex ( Fig. 4D ): aedeagus short, not surpassing the interbase; parameres almost parallel; interbase concave in his posterior border.

Female

Body length. 18.8 mm (without antennae); wing length 13.0 mm; antennal length 2.5 mm; length of ovipositor 3.1 mm.

Thorax. As male except for the following features: thorax slightly darker than male, brown.

Wing. Basal transverse section of CuA 1 ( Fig. 2B ) located shortly before dm cell (in both female paratypes).

Abdomen. In general darker than the male, dorsally with a slightly darker, longitudinal, brown central stripe that stands out against the lighter brown background of the tergites. Sternites yellowish to pale brown.

REMARKS

According to the original description of Alexander (1969) the scape and pedicel of L. cetrata , the morphologically closest species to L. mitarakanea n. sp., are light brown with first flagellomere yellowish (in L. mitarakanea n. sp. scape and pedicel are yellowish brown, with basal half of first flagellomere yellowish brown and the distal half brown). Both species also show differences in the general color pattern of the thorax and abdomen. Lecteria mitarakanea n. sp. has an overall brown to yellowish brown thorax, without any stripe pattern dorsally or any conspicuous black area at the lateral end of the transverse suture as in L. cetrata . Finally, L. mitarakanea n. sp. has yellowish brown to pale brown tergites, with a pale brown stripe at anterior and posterior margin (with the anterior stripe wider and darker) while L. cetrata shows light brown tergites with posterior margin broadly yellowish.

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. 2. — Lecteria (Lecteria) mitarakanea n. sp, male holotype (except otherwise mentioned): A, wing (male);B, wing (female,paratype ED10573); C, head;D, first antennal flagellomeres; E, femur, tibia and tarsus of hind leg (from top to bottom). Scale bars: A, B, 3 mm; C, 0.5 mm.

FIG. 3. — Lecteria (Lecteria) mitarakanea n. sp., thorax, male, holotype: A, lateral view; B, dorsal view. Scale bars: 1 mm.

FIG. 4. — Lecteria (Lecteria) mitarakanea n. sp., terminalia:A, female ovipositor,lateral view;B, female ovipositor,dorsal view;C, terminalia (male,holotype), dorsal view, with tip of left inner gonostylus broken; D, aedeagal complex (dorsal view). Scale bars: A, B, 1 mm; C, D, 0.5 mm.