Proterosceliopsis nigon Talamas, Shih & Ren, 2019

Talamas, Elijah J., Johnson, Norman F., Shih, Chungkun & Ren, Dong, 2019, Proterosceliopsidae: A new family of Platygastroidea from Cretaceous amber, Journal of Hymenoptera Research 73, pp. 3-38 : 3

Proterosceliopsis nigon Talamas, Shih & Ren sp. nov.

Figures 5 , 29 , 34

Diagnosis.

Protersoceliopsis nigon is most similar to P. wingerathi , from which it can be separated by having 9 clavomeres and T2 without striation posterior to the transverse anterior depressions.

Description.

Head: Number of antennomeres in female: 14. Number of clavomeres in female: 9. Claval formula in female: 1-2-2-2-2-2-2-2-2. Number of mandibular teeth: not visible. Number of labial palpomeres: not visible. Number of maxillary palpomeres: at least 5. Shape of clypeus: narrow, transverse. Central keel: absent. Antennal scrobe: indicated by faint transverse rugae. Anterior margin of occipital carina: crenulate.

Mesosoma: Pronotal prespiracular depression: present, without striation. Netrion: absent. Skaphion: present. Posterior notaulus: not reaching posterior margin of mesoscutum. Width of notaulus: expanding posteriorly. Parapsidal lines: present. Mesoscutal suprahumeral sulcus: simple, without furrow or cells. Scutoscutellar sulcus: crenulate. Postacetabular carina: present directly posterior to acetabulum. Postacetabular sulcus: present as simple furrow. Mesopleural epicoxal sulcus: present. Metapleural sulcus: present as a transverse furrow. Lateral propodeal carina: present and continuous dorsally, forming lamella surrounding metasomal depression, medial portion raised and projecting dorsally. Metasomal depression: excavate, interior surface with striae dorsomedially.

Metasoma: Horn on T1 in female: absent. Sculpture of T1: longitudinally striate medially. Macrosculpture of T2-T5: absent. Anterior tergal depressions: visible on T1-T6. Median keel on S2: absent. Macroculpture of S3-S6: longitudinal median carina on S3-S4, otherwise absent. Anterior sternal depressions: visible on S1-S6.

Etymology.

This word “nigon” is Anglo-Saxon for “nine”, referring to the number of clavomeres in this species, and is treated as a noun in apposition.

Link to distribution map.

[http://hol.osu.edu/map-large.html?id=463679]

Material examined.

Holotype female: MYANMAR: CNU-HYM-MA-2017566 (deposited in CNU) . Other material: (1 female) MYANMAR: OPPC1718 (deposited in OPPC).

Figures

Figures 1 - 6. 1 Sceliomorpha Ashmead (DPI _ FSCA 00008723), female antenna, ventral view 2 Electroteleia (DPI _ FSCA 00010129), female antenna, ventral view 3 Proterosceliopsis plurima (CNU-HYM-MA- 2016102), female antenna, ventral view 4 Nixonia watshami Johnson & Masner (OSUC 149432), female antenna, ventral view 5 Proterosceliopsis nigon (CNU-HYM-MA- 2017566), female antenna, ventral view. 6 Proterosceliopsis wingerathi (CNU-HYM-MA- 2016101), female antenna, lateral view. Scale bars in millimeters.

Figures 29 - 33. 29 Proterosceliopsis nigon (CNU-HYM-MA- 2017566), head, mesosoma, metasoma, dorsal view 30 Trimorus Foerster (USNMENT 01197861), metasoma, dorsal view 31 Amitus Haldeman (OSUC 404941), metasoma, dorsal view 32 Nixonia krombeini Johnson & Masner (OSUC 146429), metasoma, dorsal view 33 Sparasion philippinensis Kieffer (USNMENT 00872835), metasoma, dorsal view. Scale bars in millimeters.

Figures 34 - 38. 34 Proterosceliopsis nigon (CNU-HYM-MA- 2017566), head, mesosoma, metasoma, ventral view 35 Dvivarnus mikuki Talamas & Miko (USNMENT 01059135), metasoma, ventral view 36 Trichacis (USNMENT 01059347), metasoma, ventral view 37 Nixonia watshami (OSUC 149432), metasoma, ventral view 38 Sparasion philippinensis (USNMENT 00872835), metasoma, ventral view. Scale bars in millimeters.