Calliscelio alcoa Chen & Masner

Chen, Hua-yan, Masner, Lubomir & Johnson, Norman F., 2017, New World species of the genus Calliscelio Ashmead (Hymenoptera, Platygastridae, Scelioninae), ZooKeys 648, pp. 1-136 : 20-23

Calliscelio alcoa Chen & Masner sp. n. Figures 7-9, 28-33

Description.

Body length of female: 2.86-3.10 mm (n=10). Body length of male: 2.42-2.54 mm (n=16). Color of head: orange throughout. Color of antennal clava (A7-A12): A7 dark orange, remainder dark brown to black. Shape of head: subglobose. Central keel of frons: absent. Setation of upper frons: with dense, short setae. IOS/EH: IOS distinctly less than EH. Sculpture of ventrolateral frons: granulate to finely punctate. Sculpture of frons below median ocellus: largely smooth with sparse fine punctures. Sculpture of posterior vertex: densely punctate. Hyperoccipital carina: absent. Occipital carina medially: interrupted. Length of OOL: less than 0.5 × ocellar diameter. Sculpture of postgena behind outer orbit: smooth. Ocular setae: absent. A4 in female: distinctly shorter than A3. A5 in female: shorter than A3, distinctly longer than wide. Shape of female A6: distinctly longer than wide. Form of male antennal flagellomeres: filiform, A11 approximately 3.0 × longer than wide. Length of A5 tyloid in male: approximately 0.3 × length of A5.

Color of mesosoma in female: orange throughout. Color of mesosoma in male: orange throughout. Sculpture of dorsal pronotal area: rugose. Sculpture of lateral pronotal area: smooth anteriorly, punctate rugulose posteriorly. Sculpture of netrion: rugulose. Notaulus: percurrent. Sculpture of mesoscutum: densely punctate. Shape of mesoscutellum: semiellipsoidal. Foveolae of scutoscutellar sulcus between notauli: smaller than those along margin of axilla. Sculpture of mesoscutellum: smooth with sparse fine punctures. Shape of metascutellum: posterior margin somewhat rounded, approximately 4.0 × wider than long. Sculpture of metascutellum in female: rugose anteriorly, smooth posteriorly. Sculpture of metascutellum in male: rugose. Dorsal propodeum in female: deeply excavate medially, with lateral propodeal carinae widely separated, running subparallel to accommodate T1 horn. Sculpture of dorsal propodeum in female: rugose. Sculpture of dorsal propodeum in male: rugose with one or two longitudinal keels lateral to median keel. Median keels on propodeum in female: absent. Mesopleural carina: present. Sculpture of mesepisternum below mesopleural depression: smooth. Sculpture of ventral metapleural area: smooth. Color of legs: pale yellow throughout. Sculpture of hind coxa: smooth.

Color of fore wing: hyaline. Rs+M: nebulose, weakly pigmented. Setae on R: long, erect, surpassing the margin of the wing. Length of R: approximately as long as r-rs. Length of R1: approximately as long as 2.0 × length of r-rs.

Color of metasoma in female: yellow to dark brown. Color of metasoma in male: T3 yellow, otherwise brown to dark brown. Horn on T1 in female: large and distinct. Sculpture of T1 horn dorsally: densely and transversely striate. Sculpture of posterior margin of T1 in female: longitudinally striate throughout. Sculpture of T1 in male: longitudinally striate. Development of longitudinal striae on T2 in female: reaching posterior margin of T2. Sculpture of T3: smooth medially, longitudinally striate laterally. Shape of T6 in female: distinctly elongate, approximately 3.5 × longer than wide. Sculpture of S3: largely smooth with sparse and fine punctures.

Diagnosis.

The medially interrupted occipital carina, densely punctate mesoscutum and densely and transversely striate T1 horn in the female distinguish this species of Calliscelio from all others.

Etymology.

The specific epithet refers to the locality on the label of the holotype and should be treated as a noun in apposition.

Link to distribution map.

[http://hol.osu.edu/map-full.html?id=362051]

Material examined.

Holotype, female: DOMINICAN REPUBLIC: Pedernales Prov., 25km of Alcoa Road, dry montane forest, Baoruco (Bahoruco) Mountains, 700m, 18.I.1989, L. Masner, OSUC 458212 (deposited in CNCI). Paratypes: DOMINICAN REPUBLIC: 9 females, 16 males, CMNH- 486,529 (CMNH); OSUC 458213- 458232, 458251, 458327- 458328, 534379 (CNCI).