Synergus striatifrons Pujade-Villar, 2017

Lobato-Vila, Irene & Pujade-Villar, Juli, 2017, Microphysogobio zhangi Sun & Zhao 2022, n. sp., Zoological Studies (Zool. Stud.) 56 (36), pp. 1-28 : 20-22

publication ID	https://doi.org/ 10.6620/ZS.2017.56-36
persistent identifier	https://treatment.plazi.org/id/03E18788-FFF7-FFB4-FF4B-FDA477F7FD6A
treatment provided by	Felipe
scientific name	Synergus striatifrons Pujade-Villar
status

Treatment

Synergus striatifrons Pujade-Villar and Lobato-

Vila sp. nov.

( Fig. 7 View Fig )

urn:lsid:zoobank.org:act:96C806A3-E7F3-45A1-9AA2-5892F549CCBA

Type material: Holotype ñ deposited in JP-V col. ( UB) with the following labels: ‘ MEX: 292, San Marcos Contla (Papalotla de Xicohténcatl, TLAX), 19°11'54.2"N, 98°11'58.7"W, 2342 m’ (white label), ‘Ex. Amphibolips hidalgoensis , Q. crassipes , (03. vi.2010) 04.vii.2010, A. Equihua and E. Estrada’ (white label), ‘ HOLOTYPE ñ Synergus striatifrons Pujade-Villar and Lobato-Vila, Lobato-Vila 2017 desig.’ (red label). Paratypes: same data as the Holotype: 2ò and 49ñ (10ñ deposited in the NMNH; 10ñ deposited in the AMNH).

Additional material: Same data as holotype: 20ñ; MEX: 286, Laguna de Gamboa (Monte Escobedo, ZAC), 22°16'57.04"N, 103°32'58.38"W, 2197 m, Ex. Amphibolips zacatequensis , Q. eduardii , (27.iv.2011) vi.2011, C. Carrillo leg.: 2ò and 74ñ; MEX: 287, Monte Escobedo ( ZAC), 22°18'23.49"N, 103°32'47.56"W, 2188 m, Ex. Amphibolips zacatequensis , Q. eduardii , (22. iv.2011) 05.vii.2011, C. Carrillo leg.: 1ñ; MEX: 299, Fracc. Bosques de Santa Fe (Cuajimalpa, D.F.), 19°21'09.78"N, 99°15'55.02"W, 2.543 m, Ex. Amphibolips sp. , Q. crassipes , (10.vii.2014) vii.2014, D. Cibrián leg.: 2ò and 20ñ; 2ñ dissected and covered with gold with the same data as MEX: 286 and MEX: 287, respectively.

Etymology: Name in apposition related to weak striae present in its frons.

Diagnosis: This species is morphologically related to S. cibriani , S. citriformis (= S. elegans ), S. laticephalus , S. longimalaris and S. longiscapus . The new species differs from all these species by having the frons covered by multiple weak striae extending from lower face and toruli (no striae in these species). It also differs from S. laticephalus by the width of the head in dorsal view, which is much shorter (2.7 times wider than long in S. laticephalus ), the presence of metasomal micropunctures (no micropunctures in S. laticephalus ) and the absence of rugae in the scutellum (with some transverse rugae in S. laticephalus ), and from S. cibriani , S. citriformis , S. longimalaris and S. longiscapus by having OOL 3.0 times longer than the diameter of the lateral ocellus (much shorter in all these species, except in males of S. longiscapus ), scutellar foveae shallow, but visible (inconspicuous in these species) and metasoma clearly longer than head plus mesosoma (about as long as head plus mesosoma in these species). Synergus striatifrons sp. nov. also differs from S. cibriani , S. longimalaris and S. longiscapus by the absence of punctures in the frons (frons with a few punctures in these species); from S. cibriani , S. citriformis and S. longiscapus , by having POL about as long as OOL ( POL about 1.5 times longer than OOL in these species) and F1 1.5 times longer than F2 (shorter in these species); from S. cibriani and S. citriformis , by having the mesoscutum with a few piliferous punctures (no punctures in these species); from S. citriformis and S. longiscapus , by having the malar space 0.8 as long as the height of the compound eye (0.6 in these species); from S. longimalaris and S. longiscapus , by having frons, vertex and occiput black in both sexes (head coloration yellowish to brown, except for a dark spot in the area delimited by ocelli in males of these species); from S. citriformis , by the presence of metasomal micropunctures forming a posterodorsal patch (no punctures in S. citriformis ); finally, from S. longimalaris by having notauli inconspicuous in the anterior 1/3 (visible along its entire length in S. longimalaris ).

Female

Length: Body length 2.9-4.3 mm (n = 19).

Color: Head black, except for the face and genae, which are yellowish orange; frons and vertex black, occiput black; antennae dark brown; mesosoma black, tegulae yellowish; metasoma black, reddish to chestnut basally; legs testaceous to yellow, metatarsi darker, basal half of metacoxae black; forewings hyaline, brownish veins.

Head: in frontal view ( Fig. 7a View Fig ) quadrangular, 1.2 times wider than high, genae slightly expanded behind compound eye. Face faintly pubescent, lower face and genae with thin, dense and regular striae irradiating from clypeus and reaching basal margin of compound eye and basal margin of antennal toruli; medial carina also present. Clypeus indistinct, ventral margin not projected over mandibles. Malar space about 0.8 times as long as the height of the compound eye (11:14). Anterior tentorial pits visible; pleurostomal and epistomal sulcus absent. Transfacial line longer than the height of the compound eye (1.3). Toruli situated under mid-height of the compound eye; distance between torulus and compound eye about as long as the diameter of toruli; distance between toruli shorter than the diameter of torulus. Frons finely coriaceous without punctures; absence of true frontal carinae, however, frons covered by multiple weak striae extending from lower face and toruli. Head in dorsal view ( Fig. 7c View Fig ) is about 1.8 times wider than long. Vertex finely coriaceous to imbricated, without punctures. POL: OOL:LOL = 10:9:5; OOL about 3.0 times longer than the diameter of lateral ocellus. Occiput ( Fig. 7b View Fig ) coriaceous, with a few inconspicuous piliferous punctures and a few weak striae.

Antenna ( Figs. 7f, g View Fig ): 14-segmented (17: 8: 25: 18: 15: 14: 13: 11: 9.5: 8: 8: 6: 6: 10); filiform not broadened apically; pubescence dense and short; placodeal sensilla little visible only on flagellar segments F3-F12. Pedicel about 1.5 times longer than wide; F1 about 1.4 times longer than F2, F2 longer than F3 ( Fig. 7f View Fig ). Last flagellar segment 2.5 times longer than wide and 1.7 times longer than F11 ( Fig. 7g View Fig ).

Mesosoma: About 1.2 times longer than high in lateral view (including nucha), with short and not dense pubescence ( Fig. 7j View Fig ). Ratio of length of pronotum medially/laterally: 0.3. Pronotal plate absent. Lateral pronotum sculpture finely coriaceous; lateral margins of pronotum rounded, without a lateral carina. Mesoscutum ( Fig. 7i View Fig ) 1.3 times wider than long, finely coriaceous, without carinae and with a few piliferous punctures between notauli and parapsidial grooves; anterior grooves weak, occupying almost 1/3 of mesoescutum length. Notauli indistinct in the anterior 1/3, wider and not strongly convergent posteriorly. Median groove almost indistinct but visible. Parapsidial grooves weak, reaching the anterior margin of tegulae. Scutellum ( Fig. 7i View Fig ) rounded, almost as long as wide, finely coriaceous, circumscutelar carina visible, forming a clear and projected margin; scutellar foveae weak, posterior margins indistinct, shallow, covered with some striae and separated from each other by a narrow septum. Mesopleurae ( Fig. 7j View Fig ) transversely striated medially, smooth and shiny dorsally and basally; interspaces alutaceous, little pubescent basally. Metapleural sulcus well defined, reaching just over 3/4 parts of mesopleurae height. Propodeum ( Fig. 7k View Fig ) pubescent and weak sculptured, alutaceous with some rugae; propodeal carinae slightly convergent basally, central area alutaceous and pubescent. Nucha sulcated dorsally and laterally.

Legs ( Fig. 7e View Fig ): Tarsal claws with a small basal tooth.

Wings: Forewings pubescent with marginal setae, as long as mesosoma plus metasoma. Radial cell closed, 2.3 times longer than wide; areolet indistinct but visible. Rs + M inconspicuous, not reaching basal vein. Basal cell faintly pubescent.

Metasoma: Slightly longer than head plus mesosoma, clearly longer than high in lateral view ( Fig. 7l View Fig ). First metasomal segment sulcated dorsally and laterally; however, striae are incomplete in some specimens, in which case the anterior part is smooth. Syntergite smooth, anterolateral pubescence composed of a group of 6-7 setae, with a few micropunctures forming a posterodorsal patch ( Fig. 7m View Fig ); not incised dorso-distally. Hypopygial spine short, or almost as long as wide, with a few lateral setae; apical setae not projected beyond the tip of the spine.

Male

Similar to female, except for the following morphological traits: body length 2.8-2.9 mm (n = 2). Transfacial line as long as the height of the compound eye. POL: OOL: LOL = 10: 5: 4 ( Fig. 7d View Fig ). Antennae 15-segmented (12: 5: 18: 12: 10: 10: 8: 7: 7: 6: 5: 5: 5: 5.5: 7); F1 curved, slightly excavated medially, faintly expanded apically and basally ( Fig. 7h View Fig ).

Distribution: Federal District (D.F.), Tlaxcala and Zacatecas ( Mexico).

Biology: The studied material was obtained from soft galls developed on Q. eduardii Trel. and Q. crassipes Humb. et Bonpl. (Lobatae section) related to the genus Amphibolips ( A. zacatequensis and A. hidalgoensis ).