Calliscelio extenuatus 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 : 56-57

Calliscelio extenuatus Chen & Johnson sp. n. Figures 100-105

Description.

Body length of female: 1.34-1.74 mm (n=20). Body length of male: 1.81 mm (n=1). Color of head: brown throughout; orange throughout; orange to pale brown. Color of antennal clava (A7-A12): dark brown to black; A7, A8 brown, A9-A12 white to pale yellow. Shape of head: subglobose. Central keel of frons: absent. Setation of upper frons: glabrous. IOS/EH: IOS distinctly less than EH. Sculpture of ventrolateral frons: smooth to coriaceous; smooth to granulate. Sculpture of frons below median ocellus: smooth; smooth to granulate. Sculpture of posterior vertex: rugose; granulate to rugulose. Hyperoccipital carina: absent. Occipital carina medially: weakly indicated, irregularly sculptured. Length of OOL: less than 0.5 × ocellar diameter. Sculpture of postgena behind outer orbit: largely smooth with small granulate area. Ocular setae: sparse, short. A4 in female: distinctly shorter than A3. A5 in female: shorter than A3, as long as wide. Shape of female A6: distinctly wider than long.

Color of mesosoma in female: orange throughout; yellow throughout; orange to pale brown. Sculpture of dorsal pronotal area: rugose. Sculpture of lateral pronotal area: smooth throughout. Sculpture of netrion: smooth. Notaulus: percurrent or nearly so. Sculpture of mesoscutum: granulate. Shape of mesoscutellum: semiellipsoidal. Foveolae of scutoscutellar sulcus between notauli: smaller than those along margin of axilla. Sculpture of mesoscutellum: granulate. Shape of metascutellum: posterior margin rounded, approximately 3.0 × wider than long. Sculpture of metascutellum in female: rugose. Dorsal propodeum in female: not excavate medially, lateral propodeal carinae meeting anteromedially. Sculpture of dorsal propodeum in female: rugose. 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; 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: distinctly shorter than r-rs. Length of R1: greater than 3.0 × length of r-rs.

Color of metasoma in female: orange throughout; variably orange to pale brown; yellow throughout. Horn on T1 in female: absent. Sculpture of posterior margin of T1 in female: longitudinally striate throughout. Development of longitudinal striae on T2 in female: reaching the middle of T2 medially; reaching posterior margin of T2. Sculpture of T3: smooth. Shape of T6 in female: short, wider than long. Sculpture of S3: largely smooth with sparse and fine punctures.

Diagnosis.

This species is most similar to Calliscelio ruga and Calliscelio suni in size and habitus. It can be separated from Calliscelio ruga by the complete occipital carina and the shortened A6, from Calliscelio suni by the hairy compound eyes.

Etymology.

The epithet is an adjective, the Latin word for faint, weak and reduced, in reference to the weakly indicated occipital carina.

Link to distribution map.

[http://hol.osu.edu/map-full.html?id=384360]

Material examined.

Holotype, female: VENEZUELA: Aragua St., Rancho Grande Biological Station, 1100m, 10°22'N, 67°41'W, Henri Pittier National Park, 10. VIII– 13.VIII.1994, flight intercept trap, M. Archangelsky, OSUC 48454 (deposited in OSUC). Paratypes: (170 females, 1 male) COLOMBIA: 1 female, OSUC 279960 (OSUC). COSTA RICA: 1 female, OSUC 237330 (OSUC). TRINIDAD AND TOBAGO: 5 females, OSUC 546023, 546097- 546098, 546101- 546102 (CNCI). VENEZUELA: 163 females, 1 male, OSUC 545835- 545846, 545853, 545858- 545861, 545873- 545878, 545902, 545905- 545934, 545938, 545944- 545947, 545951- 545954, 545960- 545967, 545979- 545990, 557647, 557650, 557661- 557663, 557709- 557710 (CNCI); OSUC 146712, 146714, 146716, 146747, 146764, 146768, 146777- 146778, 146786, 334303- 334308, 334310- 334311, 334422- 334423, 334511, 334514- 334515, 334520- 334522, 334524, 334536, 334539, 334542- 334544, 334546, 334549- 334551, 45296, 45300, 46280, 46286, 46299, 46532, 46537, 46563, 46580, 48128, 48139, 48146, 48166, 48176, 48315, 48326, 48371, 48387, 48396, 48408, 48426, 48459, 48480, 48492, 48605, 48623, 48628, 48641, 48723, 48839, 48881, 48885, 63892- 63893, 63905, 63908, 63911, 63917, 64582 (OSUC).