Chakra parviocula Veenakumari, 2022

Veenakumari, Kamalanathan, Sreedevi, Kolla & Mohanraj, Prashanth, 2022, Additions to the genus Chakra Rajmohana and Veenakumari, 2014 (Hymenoptera: Platygastroidea: Scelionidae) from India, Journal of Natural History 56 (41 - 44), pp. 1657-1707 : 1689-1692

Chakra parviocula Veenakumari sp. nov.

urn:lsid:zoobank.org:act:CE7058A0-2375-4D8E-9580-CE409AEF57AB

( Figures 16 (a–e), 17(a–b), 23(i))

Female body length = 1.13 mm (n = 1); male body length = 1.15 mm (n = 1).

Colour

Head and mesosoma yellow-orange; T1 red-brown; T2 and T3 yellow brown with redbrown transverse band anteriorly; remaining tergites brown-black; lateral and posterior margins of mesoscutum, mesoscutellum, metascutellar spine, and lateral propodeal area red-brown; inner margins of ocelli with black markings; radicle yellow-brown, A1 yellowbrown except basal brown band, A2 grey-brown, A3–A6 brown-black, remaining antennomeres darker than the preceding ones; all legs yellow with black apical tarsomeres.

Head

1.1× as wide as high, 1.4× as high as long. Setation on head: dense. IOS: 0.7× head width, 2.4× eye length. POL> OOL> LOL: 9.7:8.1:5.5. OOL: 4.3× MOD. Compound eye: small (L: W = 11.1:7.5). Sculpture on vertex: with setose protuberances, furrows between protuberances with weak rugose sculpture. Sculpture of frons: with setose protuberances except for sparse radiating striae on anterior margin of interantennal process. Central keel: absent. Sculpture of gena: with sparse setose protuberances. Facial and malar striae: weak. Interantennal process: smooth, narrows abruptly apically.

Mesosoma

L:W of mesoscutum: 17.6:27.4. Setation of mesoscutum: dense. Sculpture of mesoscutum: with setose protuberances, furrows between protuberances smooth. Mesoscutal humeral sulcus: not foveate. Mesoscutal suprahumeral sulcus: not foveate. Scutoscutellar sulcus: weakly foveate laterally. L:W of mesoscutellum: 8.4:18.5. Sculpture of mesoscutellum: with setose protuberances. Setation of mesoscutellum: dense. Sculpture of metascutellum: smooth to weakly foveate. Armature of metascutellum: triangular spine. Sculpture of metanotal trough: foveate. Sculpture of lateral propodeal area: with sparse depressions. Posterior propodeal projection: pointed, directed posteriorly. Sculpture of lateral pronotal area: predominantly smooth with transverse carinae ventrally. Pronotal cervical sulcus: not foveate. Netrion sulcus: weakly foveate. Speculum of mesopleuron: weakly transversely carinate. Episternal sulcus: foveate. Postacetabular sulcus: not foveate. Prespecular sulcus: foveate. Mesepimeral sulcus: weakly foveate. Mesepimeral area: smooth, narrower than mesepimeral sulcus. Mesopleural carina: present. Sculpture of femoral depression: dorsally smooth, ventrally with sparse oblique carinae. Mesopleural pit: present. Sculpture of ventral mesopleuron: with setose protuberances. Sculpture of metapleuron: dorsally smooth, ventrally weakly foveate with a smooth area posterodorsally. Metapleural sulcus: foveate. Paracoxal sulcus: foveate. Metapleural epicoxal sulcus: not foveate. Wings: brachypterous.

Metasoma

L:W of metasoma: 53.8:37.6. Sculpture of T1: unevenly foveate interspersed with short furrows posteriorly. Length of T1: 0.5× the length of T2. Horn on T1: absent. Length of T2: 0.4× the length of T3. Sculpture of T2: anteriorly smooth, followed by basal foveae and dense longitudinal costae. Sculpture of T3: smooth with setigerous punctae, setae elongate. Sculpture of T4–T6: smooth with setigerous punctae.

Male

Similar to female. Head and mesonotum brown-black; T1 distinctly foveate; shape of antennomeres: short and rectangular.

Material examined

Holotype. Female ( ICAR / NBAIR / P4444 ), INDIA: Odisha: Bhubaneswar, Odisha University of Agriculture and Technology ( OUAT), 20.264°N 85.813°E, 45 m, YPT, 31 January 2016.

Paratype. 1 male ( ICAR / NBAIR / P4445 ) Odisha: Bhubaneswar , OUAT, 20.264°N 85.813°E, 45 m, YPT, 31 January 2016 .

Etymology

The species epithet ‘parviocula’, meaning ‘small eyed’ in Latin, refers to the size of the eyes in this species. The name is treated as an adjective.

Diagnosis

This is the only species of the genus that has small eyes, brachypterous wings and T3 with dense setigerous punctae.

Figures

Figure 16. Chakra parviocula sp. nov. (♀): (a) Habitus, dorsal view; (b) frons; (c) head and pleuron; (d) head, mesoscutum and reduced wings (brachyptery); (e) antenna.