Lutzomyia itambe Chaves Júnior, Lima, Paranhos & Andrade, 2023

Chaves Júnior, Salvador P., Lima, Guilherme C., Mendonça, Rafael P. & Andrade, Andrey J., 2023, Description of a new species of the genus Lutzomyia França, 1924 (Diptera: Phlebotominae) and of the male of Lutzomyia fonsecai (Costa Lima, 1932), Zootaxa 5277 (3), pp. 521-537 : 524-525

publication ID	https://doi.org/ 10.11646/zootaxa.5277.3.5
publication LSID	lsid:zoobank.org:pub:0B8E44CF-344D-498B-99A2-0B7347F7D055
DOI	https://doi.org/10.5281/zenodo.7890159
persistent identifier	https://treatment.plazi.org/id/C805E66D-136B-FFBE-FF47-FDD366BD53C7
treatment provided by	Plazi
scientific name	Lutzomyia itambe Chaves Júnior, Lima, Paranhos & Andrade
status	sp. nov.

Treatment

Lutzomyia itambe Chaves Júnior, Lima, Paranhos & Andrade View in CoL sp. n.

( Figs 2–5 View FIGURE 2 View FIGURE3 View FIGURE 4 View FIGURE 5 )

Diagnosis. Both sexes: Parallel labial sutures not forked. Male: gonostyle with an apical spine and lacking preapical spiniform seta; paramere with a protuberance on the ventral margin before the digitiform apex; dorsal margin of the paramere convex, with 5–6 straight setae, and tapering abruptly in its median region; area of the preapical spur covered by short and long setae; delta between 120–160 µm. Female: absence of Newstead`s sensillae on the 2 nd and 4 th palpal segments; common duct between 18–25 µm in length; individual ducts between 135–165 µm in length; in the wing delta between 49–151 µm.

Male holotype. Head ( Fig. 2A View FIGURE 2 ): 377 (353–372, n = 4) length, 310 (307–319, n = 4) width; the arrangement of deciduous bristles in the region of the occiput in the form of an`X`; clypeus: 136 (125–145, n = 5) length, 93 (87–90, n = 5) width; eyes: 180 (177–185, n = 5) length, 116 (96–107, n = 5) width; interocular distance: 99 (104– 116, n = 5). Pharynx with striations and absence of teeth ( Fig. 2B View FIGURE 2 ). Cibarium without teeth ( Fig. 2B View FIGURE 2 ). Sclerotized arch complete ( Fig. 2B View FIGURE 2 ). Labrum-epipharynx ( LE): 234 (223–232, n = 5) ( Fig. 2F View FIGURE 2 ). Antenna ( Figs 2C–E View FIGURE 2 , 3A–K View FIGURE3 ): flagellomeres (F) length: FI: 241 (235–249, n = 5), FII: 113 (107–116, n = 5), FIII: 116 (110–113, n = 5), FXIII: 61 (55–58, n = 5) and FXIV: 64 (55–64, n = 5). Ascoids: short posterior spur, atrophied peduncle; anterior spur long on F1, but does not reach the preapical papilla ( Fig. 2C View FIGURE 2 ); external ascoids implanted at a more apical level than the internal on FI; presence of a preapical papilla on FI– FIII ( Figs 2C–E View FIGURE 2 ), papilla absent in FIV– FXI ( Figs 3C–H View FIGURE3 ), presence of three papillae on FXII and FXIII ( Figs 3I and J View FIGURE3 ), and 4 papillae on FXIV ( Fig. 3K View FIGURE3 ); preapical spiniform papilla on FIX, FXI and FXIII ( Figs 3F, H and J View FIGURE3 ); presence of simple setae on FVI– FXIV ( Figs 3C–K View FIGURE3 ). Palpi (P) ( Figs 2G–K View FIGURE 2 ) length: palpomere I: 32 (32–41, n = 5), palpomere II: 136 (128–136, n = 5), palpomere III: 148 (139–145, n = 5), palpomere IV: 116 (107–121, n = 5) and palpomere V: 319 (290–325, n = 5); palpal formula: 1.4.2.3.5; PIII with Newstead’s sensillae concentrated in the median region of the article ( Fig. 2I View FIGURE 2 ). Parallel labial sutures not forked ( Fig. 2a View FIGURE 2 ) .

Cervix: ventro-cervical sensilla present. Cervical sclerites bearing a pair of spiniform sensillae.

Thorax. Mesonotum: 482 (453–504, n = 5) length. Pronotum, metanotum and post-notum light brown; paratergites and pleura off-white. Presence of five proepimeral setae; eight upper anepisternal setae; Absence of setae in the anterior region of the katepisternum. Wing ( Fig. 3L View FIGURE3 ): 1,831 (1,702 –1,795, n = 6) length, 470 (432–470, n = 5) width. Veins: R 5 : 1,165 (1,073 –1,128, n = 6), alfa: 330 (274–339, n = 6), beta: 255 (255–304, n = 6), gamma: 304 (243–261, n = 6), delta: 58 (26–90, n = 6), pi: 124 (131–160, n = 5). Legs: anterior, median and posterior. Coxa: 298 (284–311, n = 6), 298 (279–307, n = 6), 293 (293–311, n = 6); Femur: 730 (671–709, n = 4), 708 (664–679, n = 3), lost (672–774, n = 4); Tibia: 795 (758–795, n = 4), 943 (925–943, n = 3), lost (1,165 –1,184, n = 3); Tarsomere I: 460 (445–453, n = 4), 532 (526–649, n = 3), lost (642–649, n = 3); Sum of the tarsomeres II+III+IV+V: 599 (584–613, n = 4), 657 (650–708, n = 3), lost (700–723, n = 3).

Abdomen: 1,480 (1,221 –1,572, n = 6) length; tergal papillae absent. Genitalia ( Fig. 3M View FIGURE3 ): gonocoxite: 261 (246–261, n = 6) length, 116 (90–122, n = 6) width, with basal tuft of 4 setae, with the apical smaller and thinner than the others; two long, slender setae and one semifoliaceous seta longer than the others, with sickle-shaped tip/ apex; gonostyle: 154 (142–150, n = 6) length, without preapical seta and with 4 well-developed spines: one apical, one upper external, one lower external and one internal. Upper external spine implanted in the apical third of the gonostyle and the lower external spine is situated at a more basal level than the inner spine. Paramere ( Fig. 3N View FIGURE3 ): dorsal margin: 145 (145–180, n = 4) length, ventral margin: 136 (136–159, n = 4) length; convex dorsal margin, with 4 straight setae; apical extremity of the dorsal margin curved upwards; tubercule of the dorsal margin: upper edge 35 (35, n = 6), lower edge 17 (14–30, n = 6), 12 (12, n = 6) width, with three setae with hook-shaped apex; digitiform apex of the paramere: 20 (17–26, n = 6) length and 14 (12–14, n = 6) width; ventral margin with preapical spur covered by a row of short setae and one of longer setae. Parameral sheath sclerotized and coniform. Epandrial lobe: 299 (284–310, n = 6) length, 35 (32–38, n = 6) width. Sperm pump ( Fig. 3O View FIGURE3 ): 148 (148–160, n = 6); ejaculatory apodeme: 119 (116–128, n = 6); aedeagal ducts: 377 (377–409, n = 6) length and 3 (3, n = 6) width, with bevelshaped apex ( Fig. 3O View FIGURE3 ) and approximately 2.5 times longer than the sperm pump. Cerci: 122 (101–150, n = 6) length and 43 (29–43, n = 6) width.

Female. Head ( Fig. 4A View FIGURE 4 ): 391 (377–404, n = 7) length, 354 (313–362, n = 7) width; arrangement of deciduous bristles in the occiput region forming an “X” shape; clypeus: 139 (122–151, n = 7) length, 93 (87–101, n = 7) width; eyes: 203 (177–206, n = 7) length, 119 (96–122, n = 7) width; interocular distance 110 (107–133, n = 7). Pharynx with striations and small teeth ( Fig. 4B View FIGURE 4 ). Cibarium with 4 well-developed posterior teeth, two internal, pointing to the pharynx, two lateral inclined outwards, and 15–16 small, anterior teeth arranged in an undulating transverse row ( Fig. 4B View FIGURE 4 ); sclerotized arch complete ( Fig. 4B View FIGURE 4 ). Labrum-epipharynx (LE) ( Fig. 4F View FIGURE 4 ): 310 (261–287, n = 7); mandible as shown ( Fig. 4H View FIGURE 4 ). Apical region of the hypopharynx with 14–15 serrated teeth ( Fig. 4G View FIGURE 4 ). Lacinia of maxilla with 25 internal teeth and 5 external teeth ( Fig. 4I View FIGURE 4 ). Antenna ( Figs 4C–E View FIGURE 4 , 5A–K View FIGURE 5 ): flagellomeres (F) length: FI: 241 (203–235, n = 6), FII: 110 (99–104, n = 6), FIII: 107 (99–107, n = 6), FXIII: 61 (55–64, n =6) and FXIV: 61 (55–64, n =6). Ascoids: short posterior spur, atrophied peduncle; anterior spur is long on FI, but does not reach the level of the preapical papilla ( Fig. 4C View FIGURE 4 ); insertion of the ascoids on FI is variable; presence of a preapical papilla on FI–FIII ( Figs 4C–E View FIGURE 4 ), papillae absent on FIV–FXI ( Figs 5A–H View FIGURE 5 ), presence of three papillae on FXII and FXIII ( Figs 5I and J View FIGURE 5 ), and four on FXIV ( Fig. 5K View FIGURE 5 ); preapical spiniform papilla on FIX, FXI and FXIII ( Figs 5F, H and J View FIGURE 5 ); presence of simple setae on FIV–FXIV ( Figs 5A–K View FIGURE 5 ). Palpi (P) ( Figs 5L–P View FIGURE 5 ) length: palpomere I: 46 (35–43, n = 7), palpomere II: 159 (139–159, n = 7), palpomere III: 165 (154–162, n = 7), palpomere IV: 130 (93–133, n = 7) and palpomere V: 348 (310–385, n = 7); palpal formula: 1.4.2.3.5.; PIII with Newstead’s sensillae concentrated in the median region in the article ( Fig. 5N View FIGURE 5 ). Parallel labial sutures not forked ( Fig. 4a View FIGURE 4 ).

Cervix: ventro-cervical sensilla present. Cervical sclerites bearing a pair of spiniform sensillae.

Thorax: mesonotum: 584 (555–584, n = 6) length. Pronotum, metanotum and post-notum light brown; paratergites and pleura off-white. Presence of three proepimeral setae; eight upper anepisternal setae. Absence of setae in the anterior region of the katepisternum. Wing ( Fig. 5Q View FIGURE 5 ): 2,164 (1,868 –2,109, n = 6) length, 591 (526–577, n = 6) width. Veins: R 5: 1,332 (1,184 –1,295, n = 6), alfa: 414 (335–446, n = 7), beta: 335 (270–339, n = 7), gamma: 316 (284–307, n = 7), delta: 84 (49–151, n = 7), pi: 161 (117–182, n = 6). Legs: anterior, median and posterior. Coxa: 330 (279–339, n = 7), 335 (288–330, n = 7), 344 (293–330, n = 7); Femur: 777 (684–795, n = 7), 740 (647–740, n = 6), 851 (684–851, n = 5); Tibia: 832 (721–832, n = 7), 999 (795–980, n = 6), 1.276 (832–1.239, n = 5); Tarsomere I: 482 (409–467, n = 7), 569 (445–532, n = 6), 693 (481–671, n = 5); Sum of tarsomeres II+III+IV+V: 664 (584–650, n = 7), 686 (606–664, n = 5), 759 (606–752, n = 5).

Abdomen: 1,554 (1,295 –1,682, n = 7) length. Spermathecae ( Fig. 5R View FIGURE 5 ): body of spermathecae ringed, 20 (17– 26, n = 7) in length, 14 (14–17, n = 7) in width, with subspherical apical ring; junction between the body of the spermathecae and the individual duct marked by a slight constriction; common duct of the spermathecae: 17 (20–23, n = 2) in length, 9 (12–14, n = 2) in width; individual ducts: 142 (136–165, n = 7) in length, 6 (6, n = 7) in width; common and individual sperm ducts are membranous with smooth walls ( Fig. 5R View FIGURE 5 ). Cerci: 139 (116–136, n = 7) in length, 61 (35–46, n = 7) in width.

Material examined: Holotype, ♁, BRAZIL: Gruta do Itambé (21º04′08″ S, 47º26′15″ W), municipality of Altinópolis, state of S„o Paulo, 01.iv.2021, col. Lima, G. C. & Paranhos, trap CDC, aphotic zone. GoogleMaps

Paratypes: BRAZIL, 6♁♁, 8♀♀, Gruta do Itambé (21º04′08″ S, 47º26′15″ W), municipality of Altinópolis, state of São Paulo, 30.iii. to 3.vi.2021, col. Lima, G. C. & Paranhos , trap CDC, photic zone (3♁♁: 31.iii.2021), disphotic zone (1♀: 31.iii.2021; 1♀: 01.iv.2021; 1♀: 02.vi.2021; 1♀: 03.vi.2021), aphotic zone (1♁: 01.iv.2021; 1♁: 11.v.2021; 1♁. 01.vi.2021 / 2♀♀: 30.iii.2021; 2♀♀: 01.iv.2021). The material will be deposited in the FSP-USPLESP-Phlebotominae GoogleMaps .

Etymology: the specific epithet itambe , derives from the type-locality where the specimens were collected at Gruta do Itambé, municipality of Altinópolis, state of S„o Paulo, Brazil. The epithet is noun in apposition.

Distribution: BRAZIL. São Paulo: Altinópolis.