Hadronotus divergens 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 : 2140-2141

Hadronotus divergens Veenakumari sp. n.

http://www.zoobank.org/ urn:lsid:zoobank.org:pub:9EA6923A-3C54-4B35-9EE9-84C0E152950F

( Figures 6 (a–g), 26(e))

Female body length = 1.19–1.24 mm (n = 15); male body length 1.11–1.23 mm (n = 15).

Colour. Head, mesosoma and metasoma black; clypeus and mandibles yellow-black; radicle, base of A1 yellow-brown, remainder of antenna black-brown; fore leg brown-black except yellow-brown tibia; mid leg and hind leg yellow-brown.

Head. 1.4× as wide as high, 1.6× as high as long. IOS: 0.5× head width, subequal to eye length. POL: LOL: OOL: 21.2: 9.9: 2.2. OOL: 1.2× MOD. Compound eye: ovate (L: W = 21.3: 13.1). Sculpture of orbital furrow: dorsally foveate, ventrally rugose. Inner orbits in frontal view: diverging dorsally. Central keel on frons: present, extending 0.5× the length of frontal depression. Malar sulcus: indicated as a furrow. Shape of frontal depression: trigonal. L: W of frontal depression: 16.7: 13.4. Width of frontal depression: 0.7× IOS. Sculpture of frontal depression: dorsal half smooth with sparse transverse carinae; ventral half with transverse carinae on either side of central keel; reticulate-rugose lateroventrally. Submedian carina of frontal depression: restricted to dorsal half. AOD in dorsal view: 2.1× OOL. Sculpture of frons sans frontal depression: coriaceous reticulate, sparsely setose. Sculpture of vertex: coriaceous reticulate, setose. Hyperoccipital carina: present. Sculpture of gena: coriaceous reticulate.

Mesosoma. L: W of mesoscutum: 21.7: 35.1. Sculpture of mesoscutum: polygonal cells with rugose sculpture, densely setose posteriorly. Scutoscutellar sulcus: foveate. L: W of mesoscutellum: 14.6: 23.9. Sculpture of mesoscutellum: with polygonal cells bearing dense setae. Posterior mesoscutellar sulcus: foveate. Sculpture of metascutellum: anteriorly foveate, posteriorly with a short lamella, notched medially. Posterior margin of metascutellum: lamelliform, notched medially. Sculpture of metanotal trough: foveate. Lateral propodeal area: narrow, rectangular. Sculpture of lateral propodeal area: setigerous foveate. Posterior propodeal projection: short, projecting posteriorly. Pronotal cervical sulcus: with depressions. Sculpture of lateral pronotal area: dorsally with intricate sculpture, ventrally reticulate and posteriorly smooth. Prespecular sulcus: with transverse foveae. Sculpture of speculum: transversely carinate. Femoral depression: foveate. Episternal sulcus: foveate. Postacetabular sulcus: indicated as a furrow. Mesepimeral sulcus: foveate. Sculpture of posterior mesepimeral area: smooth. Mesopleural carina: indicated ventrally. Mesopleural pit: present. Metapleural sulcus: concealed under dense pilosity. Sculpture of dorsal metapleural area: concealed under dense pilosity. Sculpture of ventral metapleural area: concealed under dense pilosity. Paracoxal sulcus: concealed under dense pilosity. L: W of fore wing: 100.5: 36.5 with long marginal cilia. Ratio of length of m: st: pm: 4.3: 6.9: 2.1. L: W of hind wing: 77.3: 14.6. Length of hind wing marginal cilia: 0.41× width of wing. Shape of submarginalis: straight, distant from anterior margin of fore wing before reaching marginalis.

Metasoma. L: W of metasoma: 42.8: 32.8, 1.3× as long as wide. Anterior margin of T1: medially and laterally with projections. Basal foveae on T1: present. Sculpture of T1: longitudinally costate, with rugose sculpture between costae; posteromedially smooth. Sculpture of T2: anteromedially smooth, medially foveate-punctate between longitudinal striae, laterally reticulate, posteriorly smooth; basal foveae present. Length of T2: 7.3× length of T3. Sculpture of T3–T4: anteriorly reticulate, posteriorly smooth. Setation of metasoma: densely setose laterally, sparsely setose posteriorly.

Male. Similar to female. Length of A1–A 12 in ratio of 18.9: 4.5: 3.4: 2.9: 4.5: 4.2: 4.7: 4.7: 4.7: 5.2: 4.5: 7.9, respectively.

Material examined

Holotype, female ( ICAR / NBAIR / P4881 ), INDIA: Tripura: Agartala , TU, 23.761°N, 91.263°E, ca 20 m, YPT, 10 March 2016 . Paratypes: nine females ( ICAR / NBAIR /P4882–P4891), Tripura: Agartala, TU, 23.761°N, 91.263°E, ca 20 m, YPT, 9–10 March 2016; one female ( ICAR / NBAIR / P4892), Tamil Nadu: Erode, Bhavanisagar, 11.479°N, 77.134°E, ca 310 m, YPT, in paddy ( Oryza sativa : Poaceae ) field, 18 April 2013; one female ( ICAR / NBAIR /P4893), Karnataka: Mudigere, Horticulture College, 13.115°N, 75.632°E, coconut plantation, ca 970 m, YPT, 30 September 2015; two females ( ICAR / NBAIR /P4894–P4895), Karnataka: Mandya, 12.521°N, 76.895°E, ca 750 m, YPT, 12 September 2016; 11 males ( ICAR / NBAIR /P4896–P4906), Tamil Nadu: Erode, Bhavanisagar, 11.479°N, 77.134°E, ca 310 m, YPT, in paddy ( Oryza sativa : Poaceae ) field, 18 April 2013; two males ( ICAR / NBAIR /P4907–P4908), Andaman and Nicobar Islands: Great Nicobar: Campbell Bay, 7.013°N, 93.934°E, ca 20 m, YPT, 22 March 2016; two males ( ICAR / NBAIR /P4909–P4910), Tripura: Dhuptali, Kukibari, 23.406°N, 94.446° E, ca 40 m, YPT, 8 March 2016.

Etymology

The species epithet ‘divergens’ refers to the dorsally diverging orbits on frons. The name is treated as an adjective.

Diagnosis

The following character states are unique to this species: dorsally diverging inner orbits in frontal view, entire metapleuron densely setose and metascutellum indicated as a lamella with a medial notch.

Figures

Figure 6. Hadronotus divergens sp. n., female. (a) Habitus (dorsal view); (b) head and antennae; (c) head and pleuron; (d) vertex; (e) wings; (f) frons; (g) head and mesonotum.