Calliscelio crena Chen & Johnson

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 : 50-51

Calliscelio crena Chen & Johnson sp. n. Figures 88-93

Description.

Body length of female: 2.95-3.51 mm (n=20). Body length of male: 2.24-2.37 mm (n=6). Color of head: black throughout; dark brown. Color of antennal clava (A7-A12): dark brown to black. Shape of head: subglobose. Central keel of frons: absent. Setation of upper frons: with sparse, long setae. IOS/EH: IOS distinctly less than EH. Sculpture of ventrolateral frons: smooth with sparse punctures. Sculpture of frons below median ocellus: largely smooth with sparse fine punctures. Sculpture of posterior vertex: largely smooth with sparse fine punctures. Hyperoccipital carina: absent. Occipital carina medially: complete, strongly crenulate throughout. 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: as long as wide. Form of male antennal flagellomeres: filiform, A11 approximately 2.0 × longer than wide. Length of A5 tyloid in male: greater than 0.5 × length of A5.

Color of mesosoma in female: brown. Color of mesosoma in male: brown throughout. Sculpture of dorsal pronotal area: rugose. Sculpture of lateral pronotal area: smooth anteriorly, granulate posteriorly. Sculpture of netrion: rugulose. Notaulus: percurrent or nearly so. Sculpture of mesoscutum: anterior margin rugulose, remainder smooth. Shape of mesoscutellum: semiellipsoidal. Foveolae of scutoscutellar sulcus between notauli: as large as those along margin of axilla. Sculpture of mesoscutellum: smooth with sparse fine punctures. Shape of metascutellum: posterior margin straight, approximately 4.0 × wider than long. Sculpture of metascutellum in female: rugose. 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: absent. Sculpture of mesepisternum below mesopleural depression: smooth. Sculpture of ventral metapleural area: largely smooth, rugose ventrally. Color of legs: orange throughout; coxae to femurs pale yellow, otherwise orange. Sculpture of hind coxa: smooth.

Color of fore wing: hyaline. Rs+M: nebulose, strongly pigmented. Setae on R: long, erect, surpassing the margin of the wing. Length of R: approximately as long as r-rs. Length of R1: greater than 3.0 × length of r-rs.

Color of metasoma in female: dark brown. Color of metasoma in male: brown throughout. Horn on T1 in female: large and distinct. Sculpture of T1 horn dorsally: 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 with longitudinal submedian striae. Shape of T6 in female: distinctly elongate, approximately 3.0 × longer than wide. Sculpture of S3: smooth.

Diagnosis.

This species is most similar to Calliscelio brevitas in color, size and habitus but can be distinguished by its strongly crenulate occipital carina and relatively smooth posterior vertex ( Calliscelio brevitas with occipital carina weakly crenulate, posterior vertex densely punctate).

Etymology.

The epithet is used as a noun in apposition derived from the Latin word for notch, in reference to the strongly crenulate occipital carina medially.

Link to distribution map.

[http://hol.osu.edu/map-full.html?id=384634]

Material examined.

Holotype, female: ECUADOR: Santo Domingo de los Tsáchilas Prov., 16km SE Santo Domingo de los Colorados, Tinalandia, 680m, 4. V– 25.VII.1985, malaise trap/flight intercept trap, S. Peck & J. Peck, OSUC 553462 (deposited in CNCI). Paratypes: (28 females, 6 males) COLOMBIA: 3 females, OSUC 534555, 557567 (CNCI); OSUC 279904 (OSUC). ECUADOR: 25 females, 6 males, OSUC 534227, 553367, 553373, 553382, 553437- 553439, 553450- 553451, 553456, 553464- 553466, 553468, 553547, 553600, 553653, 553669, 553675, 553680, 553692- 553699, 553705, 553707, 553717 (CNCI).