Tanaostigmodes anamariae Perioto and Lara, 2022

Wanderley Perioto, Nelson & Lara, Rogéria Inês Rosa, 2022, A new species of Tanaostigmodes Ashmead, 1896 (Hymenoptera: Tanaostigmatidae) from Brazil associated with Machaerium acutifolium Voguel, 1837 (Fabaceae), Revista Chilena de Entomología (Rev. Chil. Entomol.) 48 (1), pp. 47-53 : 49-52

Tanaostigmodes anamariae Perioto and Lara , sp. nov.

( Figs. 1-10 )

Diagnosis. Females of T. anamariae sp. nov. are distinguished from other Tanaostigmodes species of the insculpus species group by the following set of characters: scape with small ventral plaque; marginal setae of fore wing extending to apex of wing, and ventral margin of metafemur with small subapical tooth.

Description. Female holotype ( Fig. 1 ). Body length: 3.5 mm. Color: head light brown; antenna and mandible dark brown. Mesosoma light brown with darker brown areas on dorsal mesonotum and mesoscutellum. Metasoma brown, except light brown basal portion of Gt2. Legs light brown. Wings hyaline, veins light brown. Head ( Figs. 2-4 ): rectangular in frontal view, 1.3× wider than high. Face and front imbricate to coriaceous, with small, sparse minute setiferous punctures; frontal depression emarginate, not sculptured dorsally; interantennal area about 1/3 of the height of frontal depression; lateral ocellus farther from eye margin than from median ocellus ( OOL / LOL = 1.6) ( Fig. 3 ); eye 1.3× higher than wide; malar space 0.7× eye height and subocular sulcus incomplete ( Fig. 4 ). Antenna ( Fig. 5 ): scape 3.1× longer than wide, with small ventral plaque; pedicel 1.6× longer than wide; A1 subequal in length and width to A2; F1 1.5, F2 1.2, F3-4 1.1, F5 1.0, F6 0.9 and clava 1.7× longer than wide. Mesosoma ( Figs. 6-9 ): 1.4× longer than wide in dorsal view ( Fig. 6 ). Mesoscutum imbricate to coriaceous, 0.6× as long as broad, with sparse minute, setiferous punctures; notaulus complete. Mesoscutellum with sparse minute, setiferous punctures. Propodeum, in lateral view, forming a 110° angle with mesosoma and, in dorsal view, median furrow concave, shallow, smooth, wide U shaped like, bordered antero laterally by irregular asetose cells, with thin central carina that does not reach the posterior margin; callus finely coriaceous with sparse setae antero laterally; spiracle almost transversely oriented, reniform, ~1.0× its length from dorsellum ( Fig. 7 ). Mesopleuron mainly glabrate, lightly strigulate anterodorsally. Sternopleural suture not reaching anterior margin of mesopleuron ( Fig. 8 ). Fore wing 2.3× as long as broad, with marginal setae extending to apex of wing. Stigmal vein almost straight, forming an angle of about 55° with postmarginal vein. Basal cell with 26 setae. Speculum separated from posterior margin of fore wing by more setae (on ventral surface of wing) than a single line representing subcubital vein. CC / MV = 2.3, MV / PMV = 1.4, MV / SV = 1.7, PMV / SV = 1.8. Ventral margin of metafemur with a small subapical tooth ( Fig. 9 ). Metasoma ( Fig. 10 ): coriaceous. Posterior margin of Gt2 with strong medial incision; posterior margin of Gt3-5 with slight medial incision and medial line.

Variation. No significant differences were observed between the specimens studied.

Type material. Holotype ♀ ( Fig. 1 ) [ LRRP] labeled “ BRASIL / SP / Guatapará \ Fazenda Restinga \ 21°26’03”S / 48°01’02”W \ Ex. Fruits Machaerium acutifolium \ 24 / V / 2013 \ Ana Maria de Faria, col.”; “HOLOTYPE \ Tanaostigmodes \ anamariae sp. nov. \ Perioto & Lara”; “LRRP # 22749 ” . Paratype: same data as holotype, 1 ♀ [ LRRP], “LRRP # 22750 ”. The holotype and the paratype examined are in good condition. The holotype is glued on pin, missing right A1-clava; the female paratype, glued on card, has remnants of the pupal skin attached to the antennae .

Etymology. This epithet is a patronym, genitive, in honor of Ana Maria de Faria, retired colleague of the Instituto Biológico, collector of the new species.

Distribution. T. anamariae sp. nov. is known only for the municipality of Guatapará, state of São Paulo, Brazil.

Biology and host. T. anamariae sp. nov. was reared from fruits of Machaerium acutifolium ( Fabaceae ).

Species identification. In the key to species of New World Tanaostigmodes provided by LaSalle (1987) this species runs to couplet 17 and can be separated by additional couplets as follows:

17 (16) Interantennal projection absent (see Fig. 31 in LaSalle (1987)). Toruli separated from each other by a distance distinctly greater than diameter of torulus. (kiefferi group) ...... ..............................................................................................................… T. kiefferi (Mayr, 1905)

17’ Interantennal projection small, but present (see Fig. 47 in LaSalle (1987)). Toruli separated from each other by a distance only slightly, if at all, greater than diameter of torulus. (insculptus group) .................................................................................................... 46

46 Ventral margin of metafemur without subapical tooth .... T. horacioi Perioto and Lara, 2013

46’ Ventral margin of metafemur with small subapical tooth ( Fig. 9 ) …………..….........… 47

47 Scape without ventral plaque. Basal cell of fore wing with 32 setae. Marginal setae of fore wing extending only as far as the postmarginal vein ...… T. insculptus LaSalle, 1987

47’ Scape with small ventral plaque ( Figs. 2, 5 ). Basal cell of fore wing with 26 setae. Marginal setae of fore wing extending to apex of wing ..… T. anamariae Perioto and Lara , sp. nov.

Figures

Figures 1-5. Tanaostigmodes anamariae Perioto and Lara, sp. nov., female. 1. Habitus, lateral. 2. Head, frontal. 3. Head, dorsal. 4. Head, lateral. 5. Antenna, frontal. / Tanaostigmodes anamariae Perioto y Lara, sp. nov., hembra. 1. Hábitos, lateral. 2. Cabeza, frontal. 3. Cabeza, dorsal. 4. Cabeza, lateral. 5. Antena, frontal.

Figures 6-10. Tanaostigmodes anamariae Perioto and Lara, sp. nov., female. 6. Mesosoma, dorsal. 7. Propodeum, dorsal.8.Mesosoma, lateral.9.Metafemur,lateral.10.Metasoma, lateral./Tanaostigmodes anamariae Perioto y Lara, sp. nov., hembra. 6. Mesosoma, dorsal. 7. Propodeo, dorsal. 8. Mesosoma, lateral. 9. Metafémur, lateral. 10. Metasoma, lateral.