Bactrocera (Bactrocera) kyrdemkulai Abhishek and David 2024, sp. nov.
Creators: name: Abhishek, Venkateshaiah
name: David, Karamankodu Jacob
name: Pradeep, Shivanand
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Tephritidae
Bactrocera
Bactrocera kyrdemkulai

description: Bactrocera (Bactrocera) kyrdemkulai Abhishek and David, sp. nov. (Figures 9–18)
urn:lsid:zoobank.org:act: 072FE635-C821-4B10-9841-BCF8169D7F68
Description: Male
A small-sized fly, (total body length – 3.9 to 4.2 mm), reddish-brown to black species.
Head (Fig. 9): Face 1.21 mm high and 1.48 mm wide, frons 0.63 mm high and 0.51 mm wide, face entirely fulvous with the oral margin 0.34 mm high and 0.81 mm wide with oval facial spots of 0.19 mm high and 0.11 mm wide with three frontal setae and two orbital seta, bases of all setae black, ocellar triangle black, ocellus fuscous, outer vertical seta and medial vertical seta well developed; pale fuscous marking on gena area not connected to eye margin, occiput black except posterior margin of eye and vertex, postocular setae thin, lunule fulvous and fuscous in some specimens; antennal segments fulvous, fuscous on outer side in some specimens, arista not plumose, combined length of antennal segments viz., scape (0.21 mm), pedicel (0.26 mm) and flagellomere (0.79 mm) almost equal to the vertical length (1.21mm) of face.
Thorax (Figs 10, 11): Scutum reddish brown to black (1.86 mm high and 1.50 mm wide) with lanceolate markings; postsutural lateral vitta narrow (0.07 mm) tapered posteriorly to end before intra-alar seta, medial postsutural vittae absent. Yellow markings as follows, notopleuron, postpronotal lobe, narrow mesopleural (anepisternal) stripe (0.65 mm high and 0.34 mm wide), almost equal to notopleuron, continued as yellow transverse spot on katepisternum, 0.7 of katatergite and anatergite. Scutellum yellow (0.37 mm high and 0.86 mm wide) with a narrow (0.04 mm) black basal band, subscutellum completely black with 0.53 mm high and 0.91 mm wide.
Chaetotaxy: 2 scapular setae; 1 anterior notopleural seta; 1 posterior notopleural seta; 1 mesopleural seta; 1 post sutural supra-alar seta; 1 prescutellar setae; 1 post-alar seta; 1 intra-alar seta; 1 apical scutellar setae.
Legs (Fig. 11): Coxa, trochanter, tibia of fore and hind legs, 0.4 of tibia of mid legs, tarsus and pretarsus of all legs are fuscous; remainder are fulvous.
Wing (Fig. 13): (4.31–4.42 mm) predominantly hyaline, cell bc and c colourless, narrow costal band from cell sc to wing apex overlapping with vein R 2+3, and slightly expanding at the apex, extension of cell cup longer than cup, anal streak present.
Abdomen (Fig. 12): Abdomen oval (1.90 mm high; 1.61 mm wide), predominantly red-brown to black, fuscous band between two fulvous bands on tergites II transversely, pecten on tergite III and a fuscous medial vitta covered by brown medial patch over tergites III–V, and two spots on tergite V, sternite I and V are dark fuscous and II, III and IV are fuscous, sternite V of male with a deep posterior emargination.
Male genitalia (Figs 14, 15, 16, 42, 46, 50): Epandrium and surstyli inverted U-shaped in outline (posterior view), strongly sclerotised, epandrium quadrate as long as wide (0.25 mm high; 0.26 mm wide) equal to the length of lateral surstylus (0.27 mm), lateral surstylus broad (0.1 mm), posterior lobe (0.12 mm) of lateral surstylus broadly pointed, curved back, covering prensisetae, not longer than (0.26 mm) anterior lobe; proctiger membraneous (0.12 mm), dome shaped and smaller than epandrium, medial surstylus longer than lateral surstylus tapering towards apex with a pair of thick prensisetae. Phallus elongate (2.44 mm) with well-developed glans (0.42 mm) (Figs 16, 50); 0.75 of glans sclerotised with unpatterned praeputium; subapical lobe and basal lobe present.
Attractant: Methyl eugenol.
Host plant: Not known.
Material examined: Holotype, 1♂, INDIA, Meghalaya, Ri Bhoi, Kyrdemkulai, 03.xii.2023, David, K. J. (NIM). Paratypes: 2♂♂, INDIA, Meghalaya, Ri Bhoi, Kyrdemkulai, 03.xii.2023, Abhishek, V. (NIM).
Etymology: This species is named after the type locality of the species and is a noun in apposition. (Kyrdemkulai)
Diagnosis: Bactrocera (Bactrocera) kyrdemkulai sp. nov. is similar to Bactrocera (Bactrocera) rubigina (Wang and Zhao) in general body colour (Figs 9–12, 25–28) costal band slightly overlapping R 2+3 (Figs 13, 29) and elongate lateral surstylus (Figs 14, 30) but can be differentiated by its smaller body size (3.9–4.1 mm); facial spots oval measuring 0.19 mm high, 0.11 mm wide (Fig. 9); lateral vittae narrow (0.07 mm) tapered posteriorly to end before intra-alar seta (Fig. 10); subscutellum completely black (0.53 mm high, 0.91 mm wide) (Fig. 54); ceromata fuscous (0.22 mm high, 0.35 mm wide) (Figs 12, 58); tip of posterior lobe of lateral surstylus curved back with an extended beak (Figs 14, 42); prominent fuscous markings on the scutum and abdomen (Figs 10, 12); apex of lateral surstylus convex (Figs 14, 42); abdominal sternites I, V dark fuscous, II, III and IV and males are attracted to Methyl eugenol. In contrast to this B. rubigina is a medium sized fly (5.9– 6.1 mm) with elongate oval facial spots measuring 0.31 mm high, 0.12 mm wide (Fig. 25); broad lateral vittae (0.15 mm) ending at intra-alar seta (Fig. 26); subscutellum red brown (0.70 mm high, 1.02 mm wide) with anterolateral dark patches (Fig. 56); ceromata fuscous (0.22 mm high, 0.35 mm wide) (Figs 28, 60); tip of posterior lobe of lateral surstylus curved back with an extended beak (Figs 30, 44); less fuscous markings on the scutum and abdomen (Figs 26, 28); apex of lateral surstylus convex (Figs 30, 44), abdominal sternites I, V dark fuscous, II, III and IV and males are attracted to cuelure.
description: Published as part of Abhishek, Venkateshaiah, David, Karamankodu Jacob & Pradeep, Shivanand, 2024, Two new species and a new record of Bactrocera Macquart (Diptera: Tephritidae: Dacinae: Dacini) from India with an updated key to species of subgenus Bactrocera, pp. 283-300 in Zootaxa 5486 (2) on pages 288-290, DOI: 10.11646/zootaxa.5486.2.6, http://zenodo.org/record/13209973