Bathanthidium (Bathanthidium s. str.) paco Tran & Nguyen, 2021
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publication ID |
https://dx.doi.org/10.3897/jhr.88.73969 |
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publication LSID |
lsid:zoobank.org:pub:03725F23-6D56-4E73-AE11-16B8F53E4880 |
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persistent identifier |
https://treatment.plazi.org/id/3769E63C-29F2-4552-8431-620E056400CE |
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taxon LSID |
lsid:zoobank.org:act:3769E63C-29F2-4552-8431-620E056400CE |
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treatment provided by |
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scientific name |
Bathanthidium (Bathanthidium s. str.) paco Tran & Nguyen |
| status |
sp. nov. |
Bathanthidium (Bathanthidium s. str.) paco Tran & Nguyen sp. nov.
Figs 1A-H View Figure 1 , 2A-E View Figure 2 , 3A-I View Figure 3
Material examined.
Holotype: Vietnam: ♀, Hoa Binh, Mai Chau, Pa Co, Hang Kia - Pa Co Natural Reserve , 20°44'36"N, 104°53'42"E, alt. 1340 m, Nest #VN-HB-2020-Bath-01, 24 Jun. 2020, Nguyen LTP, Nguyen CQ, Tran NT & Mai TV leg., deposited in IEBR GoogleMaps . Paratypes: Vietnam: 2 ♂, same data as holotype, deposited in IEBR GoogleMaps .
Diagnosis.
Based on the presence of fovea behind propodeal spiracle rounded and delimited by strong carina, the new species belongs to subgenus Bathanthidium Bathanthidium s. str.
This species can be distinguished from all other known species of subgenus
Bathanthidium s. str. by the following combination of characters: in the both sexes, mandible widened apically, the lowest tooth slightly rounded; in female, clypeus and mandible in entirely black, paraocular area with thin, yellowish-orange marking extending along the inner margin to the top of the eye, scutellum entirely black, T1 with lateral small, dull orange markings, T2-T5 basally with yellowish-orange bands, T1-T2 apically with dull orange bands, the rest of T3-T5 with dull orange to dirty yellow bands, T6 entirely black; in male, T7 of trilobed, median lobe longest and broadest, lateral lobe short, acute and curved inwards, male genitalia large, forked gonostylus with two unequally branches, penis valves with blade shape.
Description.
Female (Figs 1 View Figure 1 , 2 View Figure 2 ). Holotype: Body length 8.5 mm, fore wing length 8.0 mm, head width 2.1 mm, and mesosomal width 3.8 mm.
Head: In frontal view subcircular, approximately 1.2 times as wide as long (Fig. 1A View Figure 1 ), gena about 0.7 times as wide as eye (Fig. 1G View Figure 1 ). Mandible widened apically, with 4 teeth, gradually elongate from the first tooth to the fourth tooth, the lowest tooth slightly rounded (Fig. 1B View Figure 1 ). Clypeus broader than long. Supraclypeal area and clypeus slightly convex.
Mesosoma: Fore wing with two submarginal cells, the first sub-equal in length to second, basal vein nearly straight and meeting Cu vein at acute angle, 2nd m-cu vein exceeding apical margin of the second submarginal cell, stigma nearly twice as long as broad (Fig. 1E View Figure 1 ). Outer margin of axilla slightly curved. Scutellum convex, with two foveae at basal margin, each fovea about four times as wide as long and with apical margin slightly emarginated medially (Fig. 1D View Figure 1 ). Fovea behind propodeal spiracle rounded, delimited by strong carina, basal zone of propodeum distinct laterally, with regular and shiny pits (Fig. 1C View Figure 1 ).
Metasoma: T1 with carina on basal margin, T6 with margin round apically (Fig. 2C-D View Figure 2 ). T6 with large, rough, dense punctures on basal haft and with small, extremely dense punctures on remain part. Fore and middle tibiae in dorso-lateral view with a short spine (Fig. 2A View Figure 2 ), hind tibia without a spine. Arolia present (Fig. 2B View Figure 2 ). Pygidial plate absent.
Punctation. Clypeus with large, rough and dense punctures, except the apex with small punctures; frons, vertex, and gena with round, large and dense punctures. Mesoscutum with round and dense punctures, size of the punctures smaller and shallower than that on frons. Scutellum with round and dense punctures, size of punctures uneven. T1-T5 with round, small and sparse punctures on basal half and smaller and denser punctures on remain part.
Pubescence. Clypeus, paraocular area and frons with sparse, short and pale white hairs. Mandible with extremely short, brownish-yellow hairs except for some longer hairs at outer margin. Vertex, mesoscutum, scutellum with short, brownish-yellow hairs. S2-S6 with scopa.
Colour. Paraocular area with thin, yellowish-orange marking extending along the inner margin to the top of the eye (Fig. 1 View Figure 1 ). T1 with lateral small, dull orange markings, T2-T5 basally with yellowish-orange bands, T1-T2 apically with dull orange bands, the rest of T3-T5 with dull orange to dirty yellow bands, T6 entirely black (Fig. 2C-E View Figure 2 ). Fore and middle femora apically, fore tibia in inside view with dull orange.
Male (Fig. 3 View Figure 3 ). Body length 9-9.2 mm, forewing length 8.5-8.7 mm. Head about 1.2 times as wide as long, gena about 0.7 times as wide as eye.
Most characteristics of the male are similar to those of the female, except for the following:
Metasoma: T7 trilobed, median lobe longest and largest, lateral lobe short, acute and curved inwards (Fig. 3C View Figure 3 ). Male genitalia large, gonostylus forked with two unequal branches, penis valve with blade shape (Fig. 3H-I View Figure 3 ).
Colour. Clypeus yellow, supraclypeal area with small yellow marking, paraocular area with thin, long and yellow to yellowish-orange marking extending along the inner margin to the top of the eye (Fig. 3A View Figure 3 ). Mandible basally with dull yellow marking. Gena with yellowish-orange markings near the apical margin of the eye, mesoscutum latero-anteriorly with small yellowish-orange spots (sometimes absent), scutellum entirely black (Fig. 3B View Figure 3 ). Inner surface of fore femur apically, fore tibia, fore basitarsus, middle femur apically, and middle tibia with dull orange markings. T1 with lateral small, light yellowish-orange markings; T2 medially with light yellowish-orange bands, T3-T5 basally with light yellowish-orange bands; T1, T2, T5 apically with dirty yellow bands; most of the rest of T3 and T4 with dirty yellow bands; T6 and T7 entirely black (Fig. 3C, F-G View Figure 3 ). Fore and middle femora apically, fore tibia in inside view with dull orange.
Pubescence. The median part of S3 orange, apical margin of S2-S3 with pale white to dull orange feather combs, S4 shiny on basal half and with short, dense, pale white hairs on remain part and simple hair comb in apical margin, S5 shiny on basal half and short, sparser, pale yellow hairs on remaining part with black, serrated papillae at apical margin (Fig. 3E View Figure 3 ).
Remarks.
This species is most similar to B. (Bathanthidium) bifoveolatum (Alfken, 1937), but can be easily distinguished from the later by the mandible with the lowest tooth slightly rounded in both sexes (mandible with the lowest tooth acute in both sexes of B. bifoveolatum ); clypeus entirely black in female (clypeus laterally with yellow markings in female of B. bifoveolatum ); mandible basally with dull yellow marking in male (mandible with yellow marking extending from base to nearly top in male of B. bifoveolatum ); mesoscutum latero-anteriorly with small faint yellowish-orange spots or absent, scutellum, pronotal lobe black in both sexes (mesoscutum anteriorly and scutellum apically with thin and long yellow marking interrupted medially; pronotal lobe with yellow marking basally in both sexes of B. bifoveolatum ); T2 with yellowish-orange entirely bands, not interrupted medially in both sexes (T2 laterally with yellow markings in both sexes of B. bifoveolatum ).
Nest biology.
A nest was discovered in a wooden plank in the door of a house, the entrance hole of the nest with a diameter of about 4 mm (Fig. 1H View Figure 1 ). A female specimen was observed and collected when flying out from the nest. Male specimens were collected in the garden behind the wooden house.
Distribution.
Northern Vietnam (Hoa Binh province).
Etymology.
The specific name refers to the type locality, Pa Co commune in Hoa Binh province, it is treated as a noun in apposition.
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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