Xyalaspis rugosa Hartig, 1843

Mata-Casanova, Noel, Selfa, Jesús & Pujade-Villar, Juli, 2015, Revision of the genus Xyalaspis Hartig, 1843 (Hymenoptera: Figitidae: Anacharitinae) in the Western Palaearctic, Zoosystema 37 (1), pp. 31-43 : 40-41

Xyalaspis rugosa Hartig, 1843

( Figs 1F ; 2D )

Xyalaspis rugosus Hartig, 1843: 417 (female).

Aegilips subulifera Thomson, 1862: 412 (male) n. syn.

Xyalaspis subulifera – Kieffer 1901: 161.

TYPE MATERIAL. — Holotype. ♀ with the following labels: “ Xyalaspis rugosus ” (white label, handwritten); “ Holotype, Xyalaspis rugosus ♀, Hartig, 1843 , det. J. P-V 2009” (red label). (Deposited in ZSM).

Lectotype. ♂ with the following labels: “ Subulifera ” (white label, handwritten); “Typ” (red label); “ Lectotypus Aegilips subulifera ♂ Thomson, 1862 , desig. N. Mata-Casanova, 2012” (red label); “ Xyalaspis subulifera (Thomson) ♂ Kieffer, 1901, det. N. Mata- Casanova, 2012” (white label). ( Deposited in Lund University ).

OTHER MATERIAL EXAMINED. — France. Vallon de Saint-Dalmas, Saint-Dalmas-le-Selvage, Alpes-Maritimes, Malaise trap, 1421 m, 10-23.VII.2009 (M09-SES1400-M2-T3), 1♂ (MNHN).

Switzerland. Santa Maria, Müstairtal, 1400 m, 27.VI.1960, coll. J. E. & R. B. Benson, 1♂ ( NHM).

BIOLOGY. — Unknown.

DISTRIBUTION. — Palaearctic.Known from Sweden (Thomson 1862); Austria ( Kieffer 1898); Norway ( Hedicke 1930), Netherlands (Evenhuis 1965); first records for France and Switzerland.

DIAGNOSIS. — Species belonging to the group of Xyalaspis having a transversely carinated mesoscutum ( X. aberrans Mata-Casanova & Pujade-Villar, 2014 , X. alveolata Mata-Casanova & Pujade-Villar, 2014 , X. arapahoe , X. flavipes , X. hirsuta Mata-Casanova & Pujade- Villar, 2014, and X. victoriensis New, 1979 ( X. victoriensis ); it can be distinguished from all these species except X. arapahoe by the presence of a long scutellar spine. It differs from X. arapahoe in presentin a median mesoscutal furrow, lateral pits and basal carina of scutellar foveae (all absent in X. arapahoe ).

REDESCRIPTION

Length

Body 2.7 mm. Wings 2.8 mm. Antennae 1.95 mm (♀, F 6 to F 11 absent), 2.8 mm (♂).

Coloration

Head, mesosoma and metasoma black. Mandibles yellowish brown with darker teeth. Antennae yellowishbrown. Legs yellowish-brown with darker coxae. Wing venation yellow.

Head

Width of head 1.3 × its height in front view and 2.5 × its length in dorsal view. Face smooth, shiny and pubescent, with abundant piliferous punctures. Malar sulcus present, coriaceous, 0.8 × height of compound eye. Transfacial line 1.2 × height of compound eye. Diameter of toruli larger than inter-toruli distance and torulus to compound eye distance. Clypeus short; smooth, glabrous and convex. Occipital and postocular carinae absent. Compound eyes almost glabrous except for few short setae. In females, POL: OOL: LOL ratio = 7:5:3, ocelli diameter 2; in males, POL: OOL: LOL ratio = 7.5:6.5:3, ocelli diameter 3. Frons smooth, shiny and shortly pubescent with some punctae.

Antennae

Flagellomeres cylindrical and hairy. Female antennal formula (flagellomeres absent from F 6 onwards): 11.5(4.5), 4.5(3.5), 11(2.5), 13(3), 11(3), 12(3), 10(3), 9(3). Male antennal formula: 9(3.5), 4(3.5), 10(3.5), 11(3.5), 11(3.5), 10(3.5), 10(3), 10(3), 9(3), 8(3), 8(3), 7.5(2.5), 7(2.5), 9(2.5). Placodeal sensilla start at F 3 in females and at F 1 in males.

Mesosoma

Pronotum alutaceous, heavily sculptured with irregular ridges ( Fig. 2D ). Mesoscutum 1.3 wider than long in dorsal view. Mesoscutum transversely carinated over its entire length, carinae weaker in the central region ( Fig. 1F ). Notauli complete with transverse carinated sculpture; median mesoscutal furrow short and weakly impressed. Lateral region of mesoscutum smooth and punctate, parapsidal signum and parascutal sulcus present and distinct. Scutellum as long as mesoscutum in dorsal view. Scutellum coriaceous and heavily areolate. Scutellar foveae large and smooth, basally defined by a carina. Interfoveal line complete. Lateral pits of the scutellar foveae large and distinct. Scutellum narrowing towards base of scutellar spine; scutellar spine parallel sided and clearly projecting from scutellum ( Fig. 1F ), nearly half as long as scutellum; straight in lateral view. Mesopleuron smooth, glabrous and shiny in its upper half and heavily carinated in its lower half; mesopleural triangle large, alutaceous and glabrous. Propodeum alutaceous, central area delimited by two slightly curved carinae and divided by an irregular longitudinal carinae and several transverse carinae.

Wings

Radial cell of forewing closed, 2.4 longer than wide. Marginal pubescence of forewing denser inapical third.

Metasoma

Petiole longer than wide, carinated and alutaceous on all sides. Third abdominal tergum 3.7 × longer than fourth abdominal tergum in dorsal view. T 5 and T 6 abdominal terga visible in dorsal view. Metasoma smooth and glabrous; anterior margin of T 4- T 7 punctate.

REMARKS

After examining the type material of both species and undetermined material, we conclude that X. subulifera is a junior synonymy of X. rugosa . Both present same carinated sculpture of the mesoscutum and a long, clearly projected scutellar spine.

Figures

FIG. 1. — Mesoscutum in dorsal view of: A, Xyalaspis armata (Giraud, 1860); B, Xyalaspis hyalina Belizin, 1951; C, Xyalaspis laevigata Hartig, 1843; D, Xyalaspis petiolata Kieffer, 1901; E, G, Xyalaspis pseudolaevigata Mata-Casanova & Pujade-Villar, n. sp.; F, Xyalaspis rugosa Hartig, 1843. Scale bars: A-D, F, 200 µm; E, G, 100 µm.

FIG. 2. — Mesosoma in lateral view of: A, Xyalaspis armata (Giraud, 1860); B, Xyalaspis laevigata Hartig, 1843; C, Xyalaspis hyalina Belizin, 1951; D, Xyalaspis rugosa Hartig, 1843; E, Xyalaspis petiolata Kieffer, 1901; F, Xyalaspis pseudolaevigata n. sp. Scale bars: 200 µm.