Trimorus (Lochana) karna Veenakumari, 2022

Veenakumari, Kamalanathan, Keloth, Rajmohana, Sreedevi, Kolla, Kumar, P. Girish & Mohanraj, Prashanth, 2022, Replacement name for the homonym of subgenus Trimorus (Neotrimorus) (Hymenoptera: Platygastroidea: Scelionidae) with description of two new species from India, Journal of Natural History 56 (41 - 44), pp. 1709-1725 : 1711-1716

Trimorus (Lochana) karna Veenakumari sp. nov.

( Figures 1 a– d , 2a–e , 3a–c )

urn:lsid:zoobank.org:act:424E4B86-2251-4C82-A8E8-C99618A576C2

Description

Female body length = 2.57 (2.28–3.11) mm, n = 4; male body length = 2.47 (2.14– 2.67) mm, n = 4.

Colour

Head black; mesoscutum black, with posterolateral margin red-brown; mesoscutellum black with lateral and posterior margins red-brown; metascutellum and metanotal trough red-brown; mesoscutal medial spine black except for a red-brown apical tip; medial metascutellar spine basally black laterally, remainder orange-brown; posterior propodeal projections brown-yellow with uneven black patches; metasoma black except for a narrow red-brown band on anterior margin of T1; lateral pronotal area black except redbrown patches ventrally; mesopleuron and metapleuron red-brown with uneven black patches medially; legs yellow; radicle and basal 1/3 of A1 yellow; remainder of A1 and A2 dark brown; A3–A5 yellow; A6 brown; A7–A12 black.

Head

Subequal in width and height, 2× as high as long; IOS 0.6× head width, 0.9× eye length; POL> OOL> LOL in ratio of 12.9:11.1:7.0; OOL 2.0× OD; eye very long and narrow, 2.2× as long as wide (L:W = 47.6:21.9), densely setose; frons densely setose, facial striae progressively increasing in length (laterad) reaching vertex; central keel distinct, extends up to anterior ocellus; antennal scrobe above toruli present, glabrous; torular triangle setose; a blunt hyperoccipital carina present; vertex setigerous punctate and with a weak longitudinal depression medially; occipital carina not foveate; gena dorsally narrow, <0.4× width of eye; upper gena rugose and setose, while lower gena smooth with setigerous punctae; clypeus triangular with transverse carinae in dorsal 2/3; mandible tridentate, upper tooth longer than the lower teeth; interantennal process elongate and truncate; radicle short, 0.07× length of A1; A2 0.9× length of A3, A2 0.8× length of A4; clava (L:W = 42.3:10.0) with six clavomeres.

Mesosoma

Mesonotum convex; mesoscutum (L:W = 35.7:64.1) and mesoscutellum (L:W = 23.1:48.4) with dense setigerous punctae; mesoscutal humeral sulcus not foveate; medial mesoscutellar spine with longitudinal carinae; posterior mesoscutellar sulcus foveate; scutoscutellar sulcus laterally foveate; metascutellum foveate; metanotal trough foveate; medial metascutellar spine longitudinally carinate, 2× the length of medial mesoscutellar spine; epomial carina distinct; lateral pronotal area dorsally with weak setigerous punctae, posteromedially smooth with uneven short, blunt carinae, ventrally with transverse carinae; netrion sulcus not distinct; speculum of mesopleuron with a semicircular carina; prespecular sulcus indicated by round foveae; mesopleural pit present; mesopleural carina distinct; episternal sulcus foveate; postacetabular sulcus with depressions; femoral depression with transverse carinae with wide depressions between them; mesepimeral sulcus indicated with uneven shallow foveae dorsally; ventral mesopleuron with a row of foveae followed by a row of depressions; anterior margins of mesopleuron and metapleuron with dense setae; paracoxal sulcus and ventral metapleural sulcus foveate with strong transverse carinae between them; lateral propodeal area foveate on anterior margin, remainder with longitudinal carinae with depressions between them, densely setose; posterior propodeal projections smooth, 0.5× length of metascutellar spine. Fore wing (L:W = 161.4:60.0) and hind wing (L:W = 135.7:31.4) hyaline; stigmalis perpendicular to marginalis.

Metasoma

(L:W = 98.4:63.3); T1 longitudinally costate; T2 longitudinally costate with elongate basal foveae, posteriorly smooth; T3 with small, round basal foveae and longitudinal costae medially, extending 0.7× length of tergite, posteriorly smooth; T4 medially smooth with weak reticulations laterally; remaining tergites smooth with setae; T2–T4 with dense lateral patch; T1 0.6× the length of T2, T2 0.4× length of T3.

Male

Similar to female; antenna with 12 antennomeres; A3 shorter than A1; A4–A10 at least 1.5× the length of A1, with sparse, short setae.

Material examined

Holotype: female ( ICAR / NBAIR / P4300 ), INDIA: Karnataka: Chikkaballapur, Nandi Hills , 13.617°N 77.692°E, 1448 m, SN, 28 July 2011 . Paratypes: 1 female ( ICAR / NBAIR /P4309), South Andaman: Sippighat, 11.604°N 92.686°E, 8 m, YPT, 23 February 2012; 1 female ( ICAR / NBAIR /P4365), Tamil Nadu: Yercaud, Horticulture Research Station ( HRS), 11.795°N 78.211°E, 1399 m, YPT, medicinal garden, 6 August 2016; 1 female ( ICAR / NBAIR /P4367), Tamil Nadu: Lower Pulney Hills, Thadiyankudisai, HRS, 10.299°N 77.711°E, 990 m, YPT, weeds, 26 November 2016; 4 males ( ICAR / NBAIR /P4368-P4371), Tamil Nadu: Lower Pulney Hills, Thadiyankudisai, HRS, 10.299°N 77.711°E, 990 m, YPT, weeds, 26 November 2016; 1 male ( ICAR / NBAIR /P4301) Karnataka: Chikkaballapur, Nandi Hills, 13.617°N 77.692°E, 1448 m, SN, 11 August 2011; 2 males ( ICAR / NBAIR /P4302, P4304), Karnataka: Chikkaballapur, Nandi Hills, 13.617°N 77.692°E, 1448 m, SN, 28 July 2011; 1 male ( ICAR / NBAIR /P4311), Karnataka: Bengaluru, Kengeri, 12.956°N 77.527°E, 857 m, YPT, 17 November 2012.

Etymology

This species is named ‘Karna’, after the tragic hero in the Indian epic Mahabharatha, who was so charitable that he gave to the needy even when it was to his own detriment. The name is treated as a noun in apposition.

Diagnosis

Trimorus (Lochana) karna sp. nov. is similar to T. (L.) satyaki sp. nov. but differs from it in the following combination of characters: in T. (L.) karna entire mesoscutum is setigerous punctate; femoral depression with wide depressions between the transverse carinae; mesopleural carina with no foveae on posterior margin; paracoxal sulcus and ventral metapleural sulcus foveate with strong transverse carinae between them; lateral patch on T3 dense; whereas in T. (L.) satyaki sp. nov. entire mesoscutum is setigerous punctate except for imbricate sculpture posteromedially; femoral depression with narrow depressions between transverse carinae; mesopleural carina with a row of foveae on posterior margin; paracoxal sulcus and ventral metapleural sulcus foveate without strong transverse carinae between them, instead a smooth area present; lateral patch on T3 sparse.

Figures

Figure 1. Trimorus (Lochana) karna sp. nov., female. (a) Habitus (dorsal view); (b) habitus (lateral view); (c) head and mesonotum (lateral view); (d) head and pleuron.

Figure 2. Trimorus (Lochana) karna sp. nov., female. (a) Head showing hyperoccipital carina and pronotum with lateral spines; (b) frons; (c) wings; (d) head and antenna; (e) mandible with unequal teeth.

Figure 3. Trimorus (Lochana) karna sp. nov., male. (a) Habitus (dorsal view); (b) habitus (lateral view); (c) antenna.