Alloxysta onae Ferrer-Suay, 2023

Ferrer-Suay, Mar, Pujade-Villar, Juli & Selfa, Jesús, 2023, Four new species of Alloxysta (Hym.: Cynipoidea: Figitidae: Charipinae) from Petr Starý’s collection, European Journal of Taxonomy 910, pp. 56-68 : 60-62

Alloxysta onae Ferrer-Suay sp. nov.

urn:lsid:zoobank.org:act:691FD44B-6DDD-4663-BD2B-115F9515FCC8

Fig. 2

Diagnosis

Alloxysta onae sp. nov. is characterized by the partially open radial cell, pronotal carinae absent, propodeal carinae present, forming a plate and antennae with rhinaria beginning in F2 and club shape in F3, female with F1 longer than pedicel and F2, F2 longer than F3 and F3 subequal to F4. It is closely related to A. longipennis (Hartig, 1841) but they can be differentiated by the presence of pronotal carinae, absent in A. onae while they are present in A. longipennis .

Etymology

This species is dedicated to the daughter of the first author, Ona Garrido Ferrer.

Material examined

Known from one male and three females.

Holotype

SLOVAKIA • ♀; Vyšná hora, Čertovice, N Tatry ; 22 Jun. 1963; Holman leg.; S alix caprea; Pterocomma salicis ; 63/766; UB.

Paratypes

SLOVAKIA • 2 ♀♀, 1 ♂; same collection data as for holotype; UB.

Description

LENGTH. Female: 1.4–1.7 mm. Male: 1.5 mm.

COLOURATION. Head, mesosoma and metasoma brown. Antennae yellow darkening towards the end. Legs yellow and veins yellowish brown.

HEAD. Transversally ovate, smooth, and shiny, slightly wider than high in front view. Setae below and between toruli, few scattered setae above toruli. Scattered setae on vertex and many setae on face. Transfacial line 1.0 times the height of compound eye. Malar space 1.0 times the height of compound eye.

ANTENNA. Female: 13-segmented, filiform. All antennomeres covered with sparse setae. F1 smooth and thinner than remaining flagellomeres, F2 with few sensilla present and F3–F11 with placodeal sensilla and club shaped. Antennal formula: 3.0 (1.9); 6.5 (1.2); 4.6 (1.5); 4.2 (1.7); 4.1 (2.0); 3.5 (2.1), F5–F11 subequal in length, width, and shape ( Fig. 2E ). Male: 14-segmented, filiform. All antennomeres covered with sparse setae. F1 smooth and thinner than remaining flagellomeres, F2–F12 with placodeal sensilla and club shaped. F2 with little bump on top side. Antennal formula: 2.8 (1.8); 5.3 (1.2); 4.3 (1.2); 3.8 (1.2); 3.8 (1.4); 3.0 (1.4), F5–F12 subequal in length, width, and shape ( Fig. 2D ).

MESOSOMA. Pronotum nearly completely covered by abundant setae, without carinae ( Fig. 2C ). Mesoscutum smooth and shiny, round in dorsal view with few scattered setae. Scutellum smooth and shiny with scattered setae, more abundant on apex of scutellum. Propodeum covered by abundant long pubescence, with two carinae joining forming plate, this plate has many setae on first half and curved sides ( Fig. 2F ).

FORE WING. Longer than body, 1.4 times as long as mesosoma and metasoma together. Covered with dense pubescence; marginal setae present and very long. Partially open radial cell, 3.2 times as long as wide in female ( Fig. 2A ) and 2.7 times in male ( Fig. 2B ). R1 short and curved; Rs long and slightly curved.

METASOMA. Anterior part with an incomplete ring of setae, glabrous at centre, wider laterally. Metasoma smooth and shiny, T3 and T4 clearly distinguished.

Distribution

Slovakia (Čertovice, N Tatry).

Host

Emerged from Pterocomma salicis (Linnaeus, 1758) ( Hemiptera : Aphididae ) on Salix caprea L. ( Salicaceae ).

Figures

Fig. 2. Alloxysta onae Ferrer-Suay sp. nov. A. Female radial cell. B. Paratype, ♂ (UB), radial cell. C. Pronotum. D. Paratype, ♂ (UB), antenna. E. Female antenna. F. Propodeum. G. Body. Arrows mark the limit of R1 vein, which determine the partially open radial cell. Scale bars = 50 µm.