Oreiscelio naevus Talamas & Johnson, 2009

Talamas, Elijah, Johnson, Norman, van Noort, Simon, Masner, Lubomir & Polaszek, Andrew, 2009, Revision of world species of the genus Oreiscelio Kieffer (Hymenoptera, Platygastroidea, Platygastridae), ZooKeys 6 (6), pp. 1-68 : 40-42

Oreiscelio naevus Talamas & Johnson , sp. n.

urn:lsid:zoobank.org:act:AAB6FB76-5795-4210-8D02-6E693A04F53E

urn:lsid:biosci.ohio-state.edu:osuc_concepts:225545

Figures 10 , 85-90 ; Morphbank 42

Description. General: Body length of female: 2.2-3.0 mm (n=20). Body length of male: 2.2-3.0 mm (n=20). Body color: black.

Antenna: Color of antennae in female: dark brown to black throughout. Color of antennae in male: A1–A2 brown; A3–A12 variably becoming yellow apically, antennomeres often yellow ventrally. Seta on pedicel of antenna in female: present, reaching past apex of A3.

Head: Color of setae on the head: white. Sculpture of dorsal frons between frontal carina and median ocellus: coarsely foveate, areolate. Preocellar pit in females: absent. Transverse rugae at vertex: present. Sculpture of posterior vertex: areolate, coarsely foveate. Sculpture of occipital rim: areolate. Interantennal process: simple. Number of anteriorly projecting setae on anteclypeus: 6. Color of mandibles in male: yellow throughout, teeth brown. Color of mandibles in female: yellow throughout with teeth brown. Mandibular teeth in female: dorsal tooth larger, teeth of equal size, ventral tooth larger, but less than 2 times as long as dorsal tooth. Sculpture of ventral gena anterior to genal carina: row of areolae. Sculpture of ventral gena posterior to genal carina: coarsely and irregularly punctate. Shape of anteclypeus: striplike, straight to slightly convex.

Legs: Color of legs: coxae dark brown, femora light brown, tibiae and tarsi yellow.

Mesosoma: Sculpture of dorsal pronotum: areolate. Color of setae on the dorsal mesosoma: white. Sculpture of medial mesoscutum: areolate. Sculpture of lateral mesoscutum: with an elevated patch of smoother sculpture, bounded by mesoscutal humeral sulcus laterally, extending to scutoscutellar sulcus posteriorly. Notaulus in female: present, absent. Parapsidal line: delimited. Sculpture of scutellum: areolate. Median furrow on scutellum: absent, present as a weak indentation. Posterior margin of scutellum: emarginate, convex. Outer projection of the propodeum: present as distinct corner or posteriorly projecting spine. Posterior margin of propodeal shelf between inner and outer propodeal projections in female: concave. Posterior margin of propodeal shelf between inner and outer propodeal projections in male: concave. Sculpture of ventral pronotum: foveate reticulate, becoming smooth at anterolateral corner, mostly smooth with longitudinal rugulae ventrally. Anterior pronotal pit: small. Pronotal cervical sulcus: well defined by contiguous punctures. Mesepimeral sulcus: indicated by dorsoventral line of foveae. Sculpture of femoral depression in female: smooth throughout, finely foveate throughout. Sculpture of femoral depression in male: with weak transverse striae throughout, anterior half smooth, posterior half finely foveate. Mesopleural carina: present as one or two carinae. Sculpture of ventral mesepisternum: smooth. Pilosity of metapleural triangle in female: present as many short fine white setae. Pilosity of metapleural triangle in male: present as many short fine white setae. Sculpture of ventral area of metapleuron: smooth.

Metasoma: Submarginal ridge on T1: absent. Sublateral tergal carina on T2: absent. Sculpture of T2–T3: reticulate rugose. Sculpture of T4: reticulate with finely rugulose interstices, reticulate rugose. Sculpure of T5: reticulate rugose. Shape of subapical T 6 in female in dorsal view: short, width along anterior margin at least three times the length. Apex of T 7 in male: slightly convex. Longitudinal medial keel on S1: absent. Sculpture of medial S 2 in female: punctate. Sculpture of medial S 3 in femaleeffaced to smooth. Sculpture of medial S 4 in female: effaced to smooth. Sculpture of medial S 5 in female: effaced to smooth. Sculpture of lateral S 3 in female: reticulate rugose, foveolate. Sculpture of lateral S 4 in female: reticulate rugose, foveolate. Sculpture of lateral S 5 in female: reticulate rugose, foveate. Sculpture of marginal depression of S 2 in female: rugulose, finely punctate throughout. Sculpture of marginal depression of S 3 in female: finely punctate throughout, rugulose. Sculpture of marginal depression of S 4 in female: finely punctate throughout, rugulose. Sculpture of marginal depression of S 5 in female: rugulose, finely punctate throughout. Apical spine on S 6 in female: not extending beyond apex of T6 and not visible in dorsal view. Sculpture of medial S 2 in male: punctate reticulate. Sculpture of medial S 3 in male: smooth. Sculpture of lateral S 3 in male: foveolate. Sculpture of lateral S 4 in male: rugulose, foveolate, reticulate rugose. Sculpture of medial S 5 in male: smooth, foveate. Sculpture of lateral S 5 in male: foveolate, reticulate rugose.

Diagnosis. Oreiscelio naevus is represented by a large series of specimens. Variability in the color of the legs, antennae, and mandibles loosely correlates with size: smaller specimens tend to be darker. Th is species is unlikely to be confused with O. scapularis or O. rostratus , both of which are elongate species. However, larger specimens often appear similar to O. alluaudi , and while the characters that separate them are numerous, they can be subtle. Th e preocellar pit is absent in females of O. naevus and is found very rarely in males as a small depression. Females of O. alluaudi always have a preocellar pit (Fig. 15), but it may be small and difficult to see. Oreiscelio naevus has an anterior pit of the pronotum that is small (Fig. 10) and the posterior margin of the ventral pronotum lacks a percurrent sulcus (Fig. 10). Oreiscelio alluaudi has a large, somewhat conspicuous, anterior pit of the pronotum ( Fig. 9 ), and the sulcus along the posterior margin of the ventral pronotum extends around the antespiracular patch ( Fig. 9 ). Oreiscelio naevus lacks a median keel on S1 ( Fig. 86 ) and has a setose ventral cell of the metapleural triangle (as in Fig. 5). Oreiscelio alluadi has a thin, straight median keel on S1 (Fig. 31) and the ventral cell of metapleural triangle has at most 3 very small setae ( Fig. 6 ).

Etymology. The epithet naevus , meaning “birthmark”, refers to the patch of smoother sculpture on the lateral mesoscutum.

Link to distribution map. 43

Material examined. Holotype female: MADAGASCAR: 22°37.60’S 45°21.49’E, Prov. Fianarantsoa nr Isalo NP, E of Interpretive Center , 20-27.V.02, Harin’Hala, Malaise trap, MA02-11B–29, CASENT 2042958 (deposited in CASC) 44 . Paratypes: MADAGASCAR: 107 females, 63 males, CASENT 2042286, 2042637, 2042687, 2042879-2042886, 2042892, 2042900-2042902, 2042905, 2042907-2042908, 2042928-2042929, 2042934-2042935, 2042954-2042957, 2043002-2043003, 2043008-2043009, 2043011, 2043025, 2043147-2043148, 2043169, 2043186- 2043188, 2043255-2043256, 2043351, 2043355, 2043455, 2043467, 2043472- 2043473, 2043476-2043479, 2043496, 2043506, 2043532, 2043544, 2043550, 2043556, 2043562-2043563, 2043579, 2043593, 2043690, 2043701-2043706, 2043857, 2043952, 2043968-2043969, 2043972, 2043984-2043985, 2132000, 2132065, 2132104, 2132716, 2132742-2132744, 2132767, 2132793, 2132795, 2132811, 2132847, 2132849-2132850, 2133086, 2133129, 2133131, 2133206- 2133209, 2133213-2133214, 2133225-2133229, 2133232, 2133242, 2133271- 2133272, 2133277, 2133279-2133283, 2133290, 2133305, 2133349, 2133384- 2133388, 2133406-2133408, 2133410-2133411, 2133438, 2133798, 2133930, 2134138, 2134140-2134142, 2134220, 2134240, 2134265, 2134278, 2134280, 2134468-2134469, 2134529, 2134545, 2134552, 2134689, 2134693, 2134696, 2134751, 2134868, 2135745-2135746, 2135935, 8106983-8106984, 8106989- 8106990, 8106995-8106996, OSUC 207753 ( CASC) ; CASENT 2043715-2043717 , 2132017 , 2132549 , 2133793 , 2134139 , 8106982 , 8106985 , 8106991 , 8106994 , 8106998-8106999 ( OSUC) .

Figures

Figures 7-12.87 7, Oreiscelio cultrarius sp. n., pronotum, ventrolateral view, female (OSUC 234309). 8, Oreiscelio badius sp. n., pronotum, ventrolateral view, female (OSUC 171165); 9, Oreiscelio alluaudi (Risbec), pronotum, ventrolateral view, female (CASENT 2042983); 10, Oreiscelio naevus sp. n., pronotum, ventrolateral view, female (CASENT 2133408); 11, Oreiscelio coracinus sp. n., mandibles, ventral view, female (OSUC 234362); 12, Oreiscelio rostratus sp. n., mandibles, ventral view, female (CASENT 2043322). Scale bars in millimeters.

Figures 85-90.100 Oreiscelio naevus, sp. n. 85, 87-89, female holotype (CASENT 2042958). 85, Lateral habitus, female holotype (CASENT 2042958); 86, Metasoma, lateral view, female (CASENT 2042884); 87, Head and mesosoma, lateral view, female holotype (CASENT 2042958); 88, Head and mesosoma, dorsal view, female holotype (CASENT 2042958); 89, Head, anterior view, female holotype (CASENT 2042958); 90, Mesosoma, dorsolateral view, female (CASENT 2043702). Scale bars in millimeters.

Figures 91-96.101 Oreiscelio paradoxus, sp. n., female holotype (OSUC 234365). 91, Lateral habitus; 92, Dorsal habitus; 93, Head and mesosoma, lateral view; 94, Head and mesosoma, dorsal view; 95, Head, anterior view; 96, Metasoma, dorsal view. Scale bars in millimeters.

Figures 61-66.96 Oreiscelio iommii, sp. n., female holotype (OSUC 233703). 61, Lateral habitus; 62, Dorsal habitus; 63, Head and mesosoma, lateral view; 64, Head and mesosoma dorsal view; 65, Head, anterior view; 66, Metasoma, dorsal view. Scale bars in millimeters.