Galerita linearis Fedorenko, 2025

Fedorenko, D. N., 2025, A review of Galerita (Coleoptera: Carabidae: Dryptini) of Vietnam, with description of ten new species, Russian Entomological Journal 34 (1), pp. 37-63 : 58-59

11. Galerita linearis Fedorenko , sp.n.

Figs 20 , 40–41 , 61 , 105–107 .

MATERIAL. Holotype ♂ ( ZMMU) labelled: ‘N-Vietnam, 40 km W of/ Cao Bang, Phia Oac Mt. / E-slope, h= 1600– 1800 m / 22º36′27″N 105º52′0″E / 22.V–6.VI.2018 / leg. A.

Abramov’. Paratypes ( SIEE): ♂, 3♀♀, with same label; 3♂♂, ♀, same data, except for ‘…/ Cao Bang, Phia Oac Mt. / 22º36′30″N 105º52′20″E, h~ 1600–1650 m,/ deciduous forest, 3–11.X./ leg. D. Fedorenko 2018 ’; ♀ ( ZISP), ‘ NE Vienam, Cao Bang / Prov., Nguen Binh / Distr., Quang Thanh / vill. 4–13. V .[19] 98 N. Orlov’.

DIAGNOSIS. An apterous black species with aedeagus barely different from that of G. tonkinensis ; otherwise distinctive from G. tonkinensis in many characters of external morphology: the elytra with even ridges less developed than the odd ones; their pubescence uneven, sparse along odd ridges, dense and forming narrow longitudinal stripes in even intervals; the elytral apices are slightly sinuate, with the outer angles only a little rounded and thence distinct. Besides, the body is smaller, BL 23.4–25.8 (vs. 25.9–27.3) mm, the head shorter, HL/HW 1.17–1.23 (vs. 1.24–1.37), and the elytra barely short- er and narrower in both male and female ( Tab. 1).

DESCRIPTION. Body ( Fig. 20 ) black and rather shiny, head toward the level of posterior margin of eye without or with a pair of small and vague, slightly oblong, reddish spots. Antennae with basal segments black, antennomeres 3–11 or 5–11 mostly dark reddish-brown (slightly teneral specimens have reddish spots larger and more distinct and antennae reddish brown). Forebody with microsculpture superficial, more distinct toward sides of pronotum.

Head moderately and very densely to confluently punctate and pubescent in basal half, with frontal carina narrow and short, reaching the level of eye mid-length or shorter, impression on vertex very shallow to nearly indistinct.

Pronotum broadest mostly two fifths from apex, parallel-sided in front of base or with sides slightly diverging toward basal angles, these blunt, right or slightly acute. Base truncate, apex slightly sinuate and straight at middle; apical angles slightly rounded and a little projecting. Disc moderately convex, rather finely and confluently punctate, rugose-punctate along base and along sides in apical third. Median line fine yet more or less impressed, obliterate in basal and apical sixths. Basolateral foveae in form of finely impressed lines traceable in basal half, each extended into a more shallow sublateral line that almost reaches apex, or these two interrupted medially.

Elytral apices obliquely truncate and angulate combined, straight or slightly sinuate inside outer angles, often sinuous due to sutural angles truncate or rounded in addition, outer angles distinct, obtuse and blunt or narrowly rounded; sutural angles acute and sharp or with extreme apices truncate and thence straight to slightly obtuse. Pubescence yellow, forming two irregular rows of dense and fairly long setae on each side of even ridge, thus forming narrow longitudinal stripes, combined with shorter and sparse one-row setae on each side of odd ridge. Interval 3 with 4–5 discal setae, rarely with three on one side; odd intervals with multiple, much shorter, erect setae.

Aedeagus ( Figs 40–41 , 61 , 105–107 ) very similar to that of G. tonkinensis : left paramere oblong subrectangular, parallel-sided, with apex obliquely truncate, to subtriangular, with dorsal margin more rounded toward a moderately rounded apex. Internal sac with one left and two right laterobasal bulbs, with eight dorsomedial and 3–4 left lateral sclerites; most proximal of left sclerites long, curved, situated at apex of left laterobasal bulb.

DISTRIBUTION. Known from the type locality only.

NAME. Refers to the elytral pilosity in form of longitudinal fasciae.

HABITATS AND HABITS. The specimens were collected either by hands or by pitfall-trapping in cloudy forests.

COMMENTS. The new species is very similar to G. tonkinensis in the shape and structure of the internal sac of the aedeagus. This could argue for subspecies status of the two taxa, but for many non-genital morphological differences observed and the recorded localities of either species far apart, with no transitional populations being discovered as yet. Another similar species is G. chinensis Hovorka, 2019 , from the eastern Guanxi in South China. Besides similar facies, it has endophallic sclerites similar in number, eight dorsomedial and four left lateral ones. However, the left paramere is different in shape due chiefly to its apex pointed, the elytral ridges equally developed, and the two close localities recorded are much east to those of G. linearis sp.n.

Figures

Figs 19–21. Dorsal habitus: 19 — Galerita tonkinensis, ♂ from Tam Dao; 20 — G. linearis sp.n., ♀ paratype; 21 — G. breviceps sp.n., holotype. Рис. 19–21. Габитус дорЗально: 19 — Galerita tonkinensis, ♂ иЗ Тамдао; 20 — G. linearis sp.n., паратип ♀; 21 — G. breviceps sp.n., голотип.

Figs 32–43. Median lobe of aedeagus with adnate right paramere: 32–33 — Galerita variabilis sp.n., holotype; 34–35 — G. dimorpha sp.n., holotype; 36–37 — G. rufofemorata sp.n., holotype; 38–39 — G. konplongensis sp.n., paratype; 40–41 — G. linearis sp.n., paratype; 42–43 — G. sublineata sp.n., holotype; 32, 34, 36, 38, 40, 42 — left lateral aspect; 33, 35, 37, 39, 41, 43 — right lateral aspect. Scale bars 1 mm. Рис. 32–43. СреднЯЯ долЯ Эдеагуса с приросшей правой парамерой: 32–33 — Galerita variabilis sp.n., голотип; 34–35 — G. dimorpha sp.n., голотип; 36–37 — G. rufofemorata sp.n., голотип; 38–39 — G. konplongensis sp.n., паратип; 40–41 — G. linearis sp.n., паратип; 42–43 — G. sublineata sp.n., holotype; 32, 34, 36, 38, 40, 42 — слева; 33, 35, 37, 39, 41, 43 — справа. Масштаб 1 мм.

Figs 44–65. Left paramere, left lateral view: 44–45 — Galerita orientalis; 46 — G. j. japonica; 47 — G. j.peregrina; 48–49 — G. batesi from Karenni State, Myanmar (48), or Vietnam (49); 50–51 — G. ruficeps; 52 — G. variabilis sp.n.; 53 — G. dimorpha sp.n.; 54 — G. rufofemorata sp.n.; 55 — G. quadraticollis sp.n.; 56 — G. q. subcordata ssp.n.; 57–58 — G. konplongensis sp.n., holotype (57) and paratype (58); 59 — G. truncata sp.n.; 60 — G. tonkinensis; 61 — G. linearis sp.n.; 62 — G. breviceps sp.n.; 63 — G. sublineata sp.n.; 64 — G. hrdlickai; 65 — G. carinifrons. Scale bar 1 mm. Рис. 44–65. ЛеваЯ парамера слева: 44–45 — Galerita orientalis; 46 — G. j. japonica; 47 — G. j.peregrina; 48–49 — G. batesi иЗ штата Карен, МьЯнма (48), и Вьетнама (49); 50–51 — G. ruficeps; 52 — G. variabilis sp.n.; 53 — G. dimorpha sp.n.; 54 — G. rufofemorata sp.n.; 55 — G. quadraticollis sp.n.; 56 — G. q. subcordata ssp.n.; 57–58 — G. konplongensis sp.n., голотип (57) и паратип (58); 59 — G. truncata sp.n.; 60 — G. tonkinensis; 61 — G. linearis sp.n.; 62 — G. breviceps sp.n.; 63 — G. sublineata sp.n.; 64 — G. hrdlickai; 65 — G. carinifrons. Масштаб 1 мм.

Figs 102–107. Аedeagus with everted and inflated internal sac: 102–104 — Galerita tonkinensis; 105–107 — G. linearis sp.n.; 102, 105 — dorsal aspect; 103, 106 — left lateral aspect; 104, 107 — ventral aspect. Scale bars 1 mm. Рис. 102–107. Эдеагус с вывернутым и надутым внутренним мешком: 102–104 — Galerita tonkinensis; 105–107 — G. linearis sp.n.; 102, 105 — сверху; 103, 106 — слева; 104, 107 — сниЗу. Масштаб 1 мм.