Hadronotus randhra Veenakumari, 2024

Kamalanathan, Veenakumari, Kolla, Sreedevi, Khan, Farmanur Rahman & Mohanraj, Prashanth, 2024, Hadronotus insulare species group (Hymenoptera: Platygastroidea: Scelionidae) with descriptions of new species from India, Journal of Natural History 58 (45 - 48), pp. 2121-2187 : 2159-2162

Hadronotus randhra Veenakumari sp. n.

http://www.zoobank.org/ urn:lsid:zoobank.org:pub:9B03DB58-E721-4B4C-93D8-A5F00456FC85

( Figures 14 (a–g), 26(m))

Female body length = 1.53 mm (n = 1); male body length = 1.82 mm (n = 1).

Colour. Head, mesosoma and metasoma black; all coxae brown, remainder of leg brown-yellow; clypeus yellow-brown; mandible yellow-brown with red-brown teeth; radicle yellow-black; A1 basally orange, remainder brown-black; A2–A3 brown-black; A4–A6 brown, remaining antennomeres black-brown.

Head. 1.1× as wide as high, 1.6× as high as long. IOS: 0.6× head width, 1.2× eye length. POL: LOL: OOL: 19.2: 11.5: 2.1. OOL: 0.8× MOD. Compound eye: ovate (L: W = 23.6: 16.7). Sculpture of orbital furrow: foveate. Inner orbits in frontal view: converging dorsally. Central keel on frons: present, extending ¼ length of frontal depression. Malar sulcus: with shallow rectangular depressions. Shape of frontal depression: ovoid. L: W of frontal depression: 27.0: 17.5. Width of frontal depression: 0.6× IOS. Sculpture of frontal depression: transversely carinate with smooth area between carinae; polygonal cells present on either side of transverse carinae in basal half. Submedian carina of frontal depression: restricted to dorsal 1/5. AOD in dorsal view: 6× OOL. Sculpture of frons sans frontal depression: polygonal cells with rugose sculpture, setose. Sculpture of vertex: polygonal cells with rugose sculpture, setose. Hyperoccipital carina: present. Sculpture of gena: polygonal cells with rugose sculpture, setose.

Mesosoma. L: W of mesoscutum: 27.5: 41.0. Sculpture of mesoscutum: polygonal cells with rugose sculpture, densely setose. Scutoscutellar sulcus: foveate. L: W of mesoscutellum: 17.0: 30.2. Sculpture of mesoscutellum: polygonal cells with rugose sculpture, densely setose laterad. Posterior mesoscutellar sulcus: foveate. Sculpture of metascutellum: foveate. Posterior margin of metascutellum: semicircular. Sculpture of metanotal trough: foveate. Lateral propodeal area: laterally wide and narrowing centrad. Sculpture of lateral propodeal area: with depressions. Posterior propodeal projection: not pointed. Pronotal cervical sulcus: with depressions. Sculpture of lateral pronotal area: dorsally coriaceous reticulate, ventrally transversely carinate. Prespecular sulcus: transversely foveate. Sculpture of speculum: transversely carinate interspersed with foveae. Femoral depression: with irregular foveae. Episternal sulcus: foveate. Postacetabular sulcus: with elongate foveae. Mesepimeral sulcus: foveate. Sculpture of posterior mesepimeral area: narrow and smooth. Mesopleural carina: indicated ventrally. Mesopleural pit: present. Metapleural sulcus: with depressions. Sculpture of dorsal metapleural area: foveate, densely setose. Sculpture of ventral metapleural area: concealed beneath dense setae. Paracoxal sulcus: with depressions. L: W of fore wing: 100.6: 41.9. Ratio of length of m: st: pm: 4.9: 8.2: 5.6. L: W of hind wing: 80.1: 11.4. Length of hind wing marginal cilia: 0.5× width of wing. Shape of submarginalis: straight, distant from anterior margin of wing dipping slightly before reaching marginalis.

Metasoma. L: W of metasoma: 58.3: 42.5, 0.9 × as long as wide. Anterior margin of T1: with a slight projection medially and laterally. Basal foveae on T1: present. Sculpture of T1: longitudinally costate, space between costae rugose. Sculpture of T2: basally with short longitudinal costae, remainder with depressions except for smooth area on posterior margin; basal foveae absent. Length of T2: 9× length of T3. Sculpture of T3–T4: anteriorly areolate, posteriorly smooth. Setation of metasoma: dense laterally and sparse posteriorly.

Male. Similar to female. Length of A1–A 12 in ratio of 34.6: 9.3: 9.8: 6.3: 8.8: 7.3: 7.3: 7.3: 7.3: 7.3: 7.8: 13.7, respectively.

Material examined

Holotype, female ( ICAR / NBAIR /P4974), INDIA: Karnataka, Shivamogga, UAHS, Naville, 13.973° N, 75.578°E, ca 610 m, YPT, in potato ( Solanum tuberosum : Solanaceae ) field, 8 January 2017. Paratype: one male ( ICAR / NBAIR /P4975), Karnataka, Shivamogga, UAHS, Naville, 13.973°N, 75.578°E, ca 610 m, YPT, in paddy ( Oryza sativa : Poaceae ) field, 9 January 2017.

Etymology

The Sanskrit epithet ‘randhra’ means depressions, referring to the depressions present on the metasoma. The name is treated as an adjective.

Diagnosis

Hadronotus randhra sp. n. is similar to H. hrdyae sp. n. but differs from it in having a short central keel on frons which extends 1/4 length of frontal depression, and with stigmalis straight on fore wing, whereas in H. hrdyae sp. n. central keel on frons is elongate extending 4/5 length of frontal depression, and fore wing with an incurved stigmalis.

Figures

Figure 14. Hadronotus randhra sp. n., female. (a) Habitus (dorsal view); (b) antenna; (c) head and pleuron; (d) vertex; (e) wings; (f) frons; (g) head and mesonotum.