Gryonoides mirabilicornis Masner & Miko, 2021

Miko, Istvan, Masner, Lubomir, Ulmer, Jonah M., Raymond, Monique, Hobbie, Julia, Tarasov, Sergei, Margaria, Cecilia Beatriz, Seltmann, Katja C. & Talamas, Elijah J., 2021, A semantically enriched taxonomic revision of Gryonoides Dodd, 1920 (Hymenoptera, Scelionidae), with a review of the hosts of Teleasinae, Journal of Hymenoptera Research 87, pp. 523-573 : 523

Gryonoides mirabilicornis Masner & Miko sp. nov.

Figs 22 , 23

Diagnosis.

Gryonoides mirabilicornis differs from all other teleasine species in having tyloids (keel like release and spread structures, Isidoro et al. 1996) on A5 and A6.

Description.

Body length: 2620-2700 µm. Antenna color: scape and pedicel yellow, flagellum dark brown. Color of head: dark brown. Color of mesosoma: legs, tegula, lateral mesoscutellar spines, metascutellar spine yellowish, axillae, metanotum, lateral region of pronotal rim reddish, rest of mesosoma black. Color of metasoma: dark brown. Length of setae on male flagellomeres: more than 2 times as long as flagellomere width. Torular triangle: absent. Transverse setal fields on upper face: absent. Upper face sculpture: punctate dorsally. Upper face concavity dorsal view: convex. Central keel: absent. Head shape anterior view: head rounded in anterior view (longest head width in horizontal midline of head). Occipital carina structure dorsomedially: not crenulate. Facial striae dorsal end: not reaching midlevel of eye. Vertex sculpture: smooth. Notaulus: present. Notaulus anterior end: anterior to the transscutal line. Dorsal metapleural area: glabrous. Anteromedial pits of propodeum: absent. Area between plica and lateral propodeal carina sculpture: carinate (1 or 2 carinae present). Number of longitudinal carinae between plica and longitudinal (dorsal) section of lateral propodeal carina: 1. Medial region of lateral propodeal area pilosity: glabrous. Posterior propodeal projection length: more than two times as long as wide. Rugulose sculpture on T3: absent. T3 posterior 4/5th: smooth.

Comments.

We are not aware of a similar RSS pattern in Teleasinae , Telenominae and more derived Scelioninae . The geometry of the female antenna and the distribution pattern of uniporous olfactory sensilla have been reported to correspond to the male RSS ( Isidoro et al. 1996) in some parasitic Hymenoptera . Bin et al. 1989 have observed that Trissolcus basalis males are touching the female antenna during copulation "entwining his around hers and repeatedly". Although a the female receptor for the gland extract has not been identified, it is most reasonable to assume that the distinct change in male RSS morphology in G. mirabilicornis most likely corresponds to unique modifications on the female antenna of the same species. Specimens of G. mirabilicornis were collected together along with some female specimens of G. flaviclavus and G. fuscoclavatus . We did not find differences in the antennal morphology and sensilla pattern between the female antenna of these two species and other Gryonoides . Therefore, we consider the 3 male specimens with modified antennae to be a separate species.

Material.

Holotype: male, UNHC_0020586, PERU, Manu , Villa , Carmen, Pilicopata, 518m, 12°53'03 '‘ S, 71°24'16 '‘ W, 28.xi.2011, J. Heraty, mature forest, sweeping (CNC) . Paratypes: PERU, 2 males (CNC)

Figures

Figure 22. Gryonoides mirabilicornis Masner & Miko, sp. nov. A A 4 and A 5 showing elongate release and spread structures (rss) B release and spread structures (tyloids) correspond to class 3 gland cells (Noirot and Quennedey 1976) and are characterised by the presence of cuticular canals (arrows). Release and spread structures are present only on the fifth flagellomere in most Platygastroidea (except Sparasionini).

Figure 23. Gryonoides mirabilicornis Masner & Miko, sp. nov. A head, anterior view B head and mesosoma, lateral view.