Telistosega, Lucena & Melo, 2025

Genus † Telistosega gen. nov.

ZooBank registration: LSID: urn:lsid:zoobank.org:act:

Type species: † Telistosega intermedia sp. nov.

Diagnosis

Head not pyriform, somewhat flattened frontally; maxillary palpomeres with four articles; malar space short, ~0.2 × eye height, without longitudinal sulcus; scape length 4.6 × maximum width; flagellum fusiform, with intermediate articles broader than long; mandible with distinctly expanded basal area on outer surface, becoming strongly thin and tapering apically, main axis straight, slightly bent submedially, lacking subapical teeth on laminar edge; pronotum strongly declivitous anteriorly, posterior margin nearly straight, distinctly swollen and without transverse posterior groove, posterolateral lobe reaching tegula, lacking posterolateral and posteromedial pits; mesopleuron evenly convex, without transverse scrobal sulcus, anterior border lacking carina; dorsum of propodeum very short, shelf-like, posteriorly delimited by transverse carina, disc raised; posterior propodeal projection short, bluntly angulate; tarsal claw with very short, perpendicular, submedial tooth; metasoma with four exposed terga, internalized segments partly exposed, composing a relatively long and robust distal tube (comparatively with other Amiseginae ).

Description

Head: Not pyriform, somewhat flattened frontally, wider than high; frons lacking medial longitudinal groove; eye bulging, occupying much of lateral head, upper limit surpassing dorsal margin of lateral ocellus, inner margin gently converging at ocellar area; maxillary palpomeres with four countable articles; malar space ~0.2 × eye height, longitudinal groove indistinct, apparently absent; ocelli inserted smoothly, without well-marked small sulci around them; occipital carina short, extended only dorsally; scapal basin shallowly excavated, disc smooth, borders smoothly round, without carina or sharp edges; scape length 4.6 × maximum width; flagellum fusiform, with intermediate articles broader than long, F1 longer than combined length of F2 + F3; mandible with distinctly expanded basal area on outer surface, becoming strongly thin and tapering apically, main axis straight, slightly bent submedially, lacking subapical teeth on laminar edge.

Mesosoma: Evenly convex, not flattened dorsally, somewhat shortened anteroposteriorly; pronotum about as long as scutum in mid-line, strongly declivitous anteriorly, crossed transversely by anterior groove, posterior margin nearly straight, distinctly swollen and without transverse groove, posterolateral lobe reaching tegula, lacking posterolateral and posteromedial pits; notaulus deeply impressed, parallel-sided posteriorly, parapsidal line well marked posteriorly; scutellum slightly longer than half length of scutum in mid-line, evenly convex, simple; mesopleuron evenly convex, without transverse scrobal sulcus, anterior border lacking carina; metanotum shorter than one-third of scutellum in mid-line, expanded and slightly depressed laterally, disc slightly raised; metapleural carina distinguishable, extending across laterodorsal propodeal surface; propodeum with distinguishable lateral, dorsal, and posterior surfaces; dorsum short, shelf-like, posteriorly delimited by transverse carina, disc raised; posterior propodeal projection short, bluntly angulate; posterior declivity strongly declivitous, apparently crossed by longitudinal medial carina; tarsal claw with very short, perpendicular, submedial tooth; costal cell narrow, first abscissa of M diverging before 1cu-a, gently and smoothly curved submedially; Rs+M arising apically on M; medial cell indicated only by spectral veins; R1 shorter than stigma; Rs short, smoothly curved, distal trace fading gradually towards costal margin.

Metasoma: Four exposed terga, internalized segments partly exposed, composing a relatively long and robust distal tube (comparatively with other Amiseginae ); sterna convex and undivided medially.

Male: Unknown.

Etymology

The name is derived from the Greek telistos, meaning ‘farthest’,

plus ‘-sega’ from Amisega Cameron. The name is feminine.

† Telistosega intermedia sp. nov.

( Fig. 9)

ZooBank registration: LSID: urn:lsid:zoobank.org:act:

Description

Holotype female ( DZUP Bur-728a). Body length, ~ 2.8 mm.

Head: LID wide, subequal to eye width; gena narrow, slightly wider basally; lateral ocelli closer to inner eye margin and median ocellus than to each other; inner margin of antennal sockets touching; F4–F10 progressively shortened, F4–F11 with ventral flattened areas, F11 gently acuminate; clypeus with distinctly elongated, erect, thin, gold setation; eye glabrous; dorsum of head finely and densely punctate.

Mesosoma: Lateral pronotal depression shallowly excavated; metabasitarsus without two rows of spines; dorsum of metafemur evenly convex, without anterior expansion; dorsal sclerites of mesosoma finely and densely punctate; short, sparse, suberect setation on dorsum, becoming longer and denser posterolaterally on propodeum; wing membrane entirely setose.

Metasoma: Lateral terga broadly round, without carinae delimiting the lateral fold.

Male: Unknown.

Etymology

The species name is a Latin adjective meaning ‘intermediate’.

Type material

Holotype female in amber piece DZUP Bur-728a. The specimen is intact and well preserved. Some cracks in the amber piece prevent the lateral left view of the specimen.

Remarks

† Telistosega most resembles † Miracorium (the first female of this genus is described above), based on the general shape and structure of pronotum, frons not bulging, dorsum of propodeum short, shelf-like, posterior propodeal projection short, bluntly angulate, metabasitarsus lacking two rows of spines, and tarsal claw with small, perpendicular, submedial tooth. The new genus is readily distinguished from † Miracorium based on the narrow costal cell (distinctly broad in † Miracorium ; for comparison of this feature, see Fig. 7A, C; see also Lucena and Melo 2018: their fig.3; Lucena and Almeida 2022: their figs 15 and S22, S23); head wider than high, with broad face (pyriform in † Miracorium ); occipital carina extended dorsally (lacking in † Miracorium ); and short and simple malar space (moderately long and longitudinally crossed by sulcus in † Miracorium ). Additionally, the modified pronotum, strongly declivitous anteriorly and with swollen posterior border, combined with the above-mentioned character states, readily distinguish † Telistosega from all other genera of Amiseginae View in CoL s.l.