Chalcis bipatrus Binoy, 2025
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publication ID |
https://doi.org/10.1080/00222933.2025.2472437 |
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persistent identifier |
https://treatment.plazi.org/id/0604255B-FFE8-FFEB-FE1A-77F5FC62FF24 |
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treatment provided by |
Plazi |
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scientific name |
Chalcis bipatrus Binoy |
| status |
sp. nov. |
Chalcis bipatrus Binoy sp. n.
Chalcis gibsoni Narendran, 1989 View in CoL ( Iqbal et al. 2015, p. 112) misidentification.
( Figures 8–15 View Figure 8–15 , 16–22 View Figure 16–22 )
Type locality
Holotype ♀, INDIA: Kerala, Kozhikode district, collected near mangroves, Perumthuruthy, Elathur (11°19 ʹ 51.7”N, 75°44 ʹ 54.4”E, 15 m above mean sea level), 08 January 2022, Coll GoogleMaps . C GoogleMaps . Binoy [ SEMCC] . Paratype: ♀, same detail as holotype [ SEMCC]; 1♂, PAKISTAN, Khyber Pakhtunkhwa Province, Peshawar (34°1.2 ʹ N, 71°28.4 ʹ E, 359 m above mean sea level), 12 April 2013, Coll GoogleMaps . Toheed Iqbal [ UAP] .
Etymology
Species name bipatrus in Latin essentially means ‘two homelands’ or ‘from two countries’, reflecting the species’ presence in both India and Pakistan. The name captures the idea of the species being native to or found in two distinct geographical regions also.
Recognition
Chalcis bipatrus sp. n. is characterised by the following combination of characters: metafemur ventrally with 12–14 denticles, the basal denticle notably large and curving forward; metasoma uniformly brown-black; frons bearing a yellow macula slightly removed from the inner margin of eye; mesoscutellum distinctly produced posteriorly, with truncate apical margin. The new species exhibits dense, long pubescence on the head and legs, medial carina on the frons extending nearly to ocellar region, and petiole with anterior tubercle and lateral carinae. Sexual dimorphism is evident in the metafemur denticle count (13 in females, 11 in males) and the presence of a median row of long erect setae on the mesoscutellum in males.
Description
Holotype, ♀ ( Figures 8–15 View Figure 8–15 ). Body length 5.64 mm, length of fore wing 3.59 mm.
Colour. Body black with the following parts coloured as follows:eyes pale golden yellow with black patches, ocelli golden brown; frons black with yellow macula near scrobe; clypeus red-brown, mandible red-brown; tegulae pale yellow; wing lamina with deep brown infumation, brown veins; all coxae black, mid and metafemur black with apex yellow; metafemur black with base yellow extending onto the basal curved denticle, sub-apical third yellow; all tibiae pale brown; petiole yellow-brown with base medially and laterally red-brown; pubescence on head, thorax, propodeum and legs dense, long, and yellow-brown; hypopygium red-brown, apex paler.
Head. Head finely rugose with dense long pubescence,1.83× as wide as long in frontal view; interantennal projection wide, not raised, scrobe weakly excavate, with medial carina running along centre of face, almost reaching ocellar region ( Figure 11 View Figure 8–15 , arrow); occiput weakly rugose, posteriorly striate; eyes glabrous, 2.6× as long as malar area laterally ( Figure 9 View Figure 8–15 ); antenna with scape reaching at most anterior ocellus,setose,as long as fl2 to fl6 combined;relative length of antennomeres in the ratio 4.8: 1: 1.2: 1.5: 1.6: 1.6: 1.4: 1.2: 1: 1.1: 0.7: 0.7; POD 1.1× OOD ( Figure 10 View Figure 8–15 ); pre- and postorbital carinae absent ( Figures 9, 11 View Figure 8–15 ).
Mesosoma. Pronotum dorsally with close pits, interstices rugose, yellow pubescence arising from each pit; posterior margin of pronotum conspicuously emarginate; diameter of the pit on mesoscutum increases posteriorly, interspace smooth anteriorly, turning coriaceous posteriorly; mesoscutum 1.4× as broad as long; mesoscutellum 1.7× as long as wide with small closely arranged setigerous pits, single yellow-brown seta arising from each pit; apex of mesoscutellum conspicuously produced posteriorly, apical margin truncate ( Figure 12 View Figure 8–15 , arrow); propodeum densely and coarsely rugate; wings with dark brown infumation, moderately setose on lamina; mv long, 1.1× pmv ( Figure 14 View Figure 8–15 ); metafemur with dense yellow-brown setae, inner basal tooth present, ventrally with large basal denticle, curving followed 13 progressively shorter denticles; metatibia arching ( Figure 13 View Figure 8–15 ).
Metasoma. Metasoma globose, 1.2× as long as mesosoma; petiole yellow-brown, 0.7× as long as metacoxa, anteriorly with a raised tubercle, laterally carinate, carina almost reaching posterior end ( Figure 15 View Figure 8–15 , black arrow); terga dorsally smooth, with sparse conspicuous pubescence arising from rows of pits at posterior margin; Gt1 long, as long as 0.7× total length of metasoma,with pair of short lateral carina ( Figure 15 View Figure 8–15 ,white arrow); hypopygium faintly setose.
Male ( Figures 16–22 View Figure 16–22 ). Similar to female holotype in colour and mensuration. Body length 2.3 mm. Metafemur with inner basal tooth, outer surface with basal and sub-apical yellow patches ( Figure 20 View Figure 16–22 ); yellow macula on frons ( Figure 18 View Figure 16–22 ); median carina on scrobe long, reaching at most the ocellar area ( Figure 18 View Figure 16–22 , arrow); apex of mesoscutellum well emarginate, apical margin truncate ( Figure 19 View Figure 16–22 ). Apart from evident sexual dimorphism, metafemur with 11 denticles on ventral margin, basal one straight, similar in size to that of remaining serrulation (metafemur with 13 serrulations on ventral margin; basal one largest, curving in holotype); mesoscutellum with median row of long erect brown setae (absent in holotype).
Differential diagnosis. Chalcis bipatrus sp. n. resembles C. gibsoni in having metafemur with a prominent inner basal tubercle, the basal denticle large, followed by short well-spaced denticles; propodeum irregularly rugate; identical punctation on mesosoma; pmv at most as long as mv; metacoxa long, exceeding the base of gaster. The new species differs from C. gibsoni in having metasoma black vs metasoma red-brown in C. gibsoni ( Figure 29 View Figure 29–34 ); metafemur with basal denticle curving, followed by 13 short denticles vs metafemur with basal denticle straight, followed by 18 short denticles in C. gibsoni ( Figure 33 View Figure 29–34 ); metafemur with sub-apical third yellow vs metafemur with two non-confluent yellow patches subapically in C. gibsoni ( Figure 33 View Figure 29–34 ); head and legs conspicuously setose vs setosity comparatively low in C. gibsoni ( Figures 2 View Figure 1–7 , 30 View Figure 29–34 ); apex of mesoscutellum produced posteriorly, truncate at apical margin vs apex of mesoscutellum slightly emarginate, rounded at apical margin ( Figure 32 View Figure 29–34 ); interantennal tubercle not raised, conspicuous medial carina at midline of frons, almost reaching ocellar region vs interantennal carina raised, medial carina very short in C. gibsoni ( Figure 31 View Figure 29–34 ); frons rugulose, with yellow patch at scrobal margin vs frons punctate, black, without any yellow patch in C. gibsoni ( Figure 31 View Figure 29–34 ); POD 1.1× OOD vs POD 1.5× OOD in C. gibsoni ( Figure 30 View Figure 29–34 ).
Chalcis bipatrus sp. n. resembles C. biligiriensis in having yellow patches on frons ( Figure 2 View Figure 1–7 ), but can be differentiated on the basis of characters given in the key to species. Chalcis bipatrus sp. n. can be differentiated from C. edentata based on characters in the key.
Condition of paratype male
Mounted on card-point, antenna missing.
Host
Unknown.
Distribution
Oriental ( India: Kerala); Palaearctic ( Pakistan: Khyber Pakhtunkhwa Province).
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.
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Chalcis bipatrus Binoy
| Binoy, C. & Sureshan, P. M. 2025 |
Chalcis gibsoni
| Iqbal T & Inayatullah M & Ahmad S 2015: 112 |