Ilyocoris andancensis JATTIOT & TRINCAL & GARROUSTE & NEL 2023, sp. nov.
Creators: name: JATTIOT, ROMAIN
name: TRINCAL, VINCENT
name: GARROUSTE, ROMAIN
name: NEL, ANDRÉ
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Naucoridae
Ilyocoris
Ilyocoris andancensis

description: Ilyocoris andancensis sp. nov.
(Figs 1–4) urn:lsid:zoobank.org:act: 3EB380F0-1632-4971-A5ED-7DFE8A2DC9FA
Material. Holotype MNHN-F.A71364 (Romain Jattiot coll.), paratypes MNHN-F.A71365, and MNHNF.A71366 (all compressed mummies), stored at the Muséum National d’Histoire Naturelle, Paris, France.
Diagnosis. Adult characters only. Color patterns identical on the three fossils. Connexivum brownish along posterior part and yellowish along anterior part; green-yellow anterior part of pronotum clearly narrower than black posterior part; outer margin of embolium black.
Type locality and horizon. Lower limit of Turolian to Tortonian-Messinian boundary, 7.30 ± 0.15 Ma (Pastre et al., 2004), ‘ La Montagne d’Andance’, Saint-Bauzile village, Ardèche, France.
Description (based on all specimens). Head transverse; ocelli absent; eyes sessile; labium short and thick, arising near apex of head, conical, obviously segmented, without transverse sulcation; labium; apex of head without a laminated extension; vertex less than two times and half broader than transversal diameter of compound eye; head, pronotum, and scutellum shiny; ground color black and green-yellow; brown dots on head, some of which form two longitudinal, parallel, median lines, each of them widening posteriorly; anterior margin of pronotum straight behind interocular space; lateral pronotal margins limited inside by a strong sunken line; anterior part of pronotum green-yellow, and posterior part black; scutellum black; no meso- and metasternal midventral carinae (observed on holotype by partly removing the mummy); macropterous, hemelytra olive brown, opaque, very finely and densely punctate, clavus and margin paler, embolium with a less dense punctuation than the rest of hemelytra but with outer margin black; membrane without venation; fore legs raptorial, fore femur only moderately incrassate with inner antero-basal angle not produced, forming a continuous curve with trochanter, tarsus without a fringe of setae; hind legs flattened; tibiae with strong brownish spines and long swimming setae. Legs pale yellow; apex of abdomen without respiratory processes; connexivum brownish along posterior part and yellowish along anterior part.
Dimensions. Body 14.7 mm long, 6.4 mm wide (MNHN-F.A71364), 12.0 mm long, 6.0 mm wide (MNHN-F.A71365), 13.5 mm long, 6.0 mm wide (MNHN-F.A71366); head 1.3 mm long, 3.4 mm wide (MNHN-F.A71364); pronotum 2.0 mm long, 4.1 mm wide (MNHN-F.A71364); abdomen 9.7 mm long, 6.5 mm wide (MNHN-F.A71364); fore tibia 2.1 mm long, 0.9 mm wide; hind tibia 3.0 mm long, tarsus 4.1 mm long, hemelytra 8.6 mm long (MNHN-F.A71364).
description: Published as part of JATTIOT, ROMAIN, TRINCAL, VINCENT, GARROUSTE, ROMAIN & NEL, ANDRÉ, 2023, A new fossil species of the saucer bug genus Ilyocoris (Heteroptera, Naucoridae) from the Upper Miocene maar paleolake of la Montagne d'Andance (France), pp. 260-267 in Palaeoentomology 6 (3) on page 261, DOI: 10.11646/palaeoentomology.6.3.9, http://zenodo.org/record/8073120