Archicolliuris albolineata, Anichtchenko & Sciaky, 2024

Anichtchenko, Alexander & Sciaky, Riccardo, 2024, Contribution to the knowledge of the Philippines species of the tribe Odacanthini Laporte, 1834 (Coleoptera: Carabidae), Zootaxa 5493 (4), pp. 328-344 : 329-331

Archicolliuris albolineata sp. n.

Figure 1

Type material: Holotype, male: “ Filippine —C Luzon / Norzagaray / Bulacan II.2023 ” ( RSc) . Paratypes: 1 ♂: idem ( RSc) ; 1 ♂, 1 ♀: “ Norzagaray Bulacan, Central Luzon / April 2023 ” ( RSc; DUBC) ; 1 ♂: “ Norzagaray , Bulacan, III. 2023 ” ( RSc) ; 1 ♀: id. IV. 2023 ( RSc) ; 1 ♀: id. V. 2023 ( RSc) ; 2 ♀: “ Benedicto, Don Salvador, Negros occ., XI.2019 ” (Rsc) .

Diagnosis. This new species ( Fig. 1 ) is very similar in habitus and probably related to Archicolliuris tenuis ( Andrewes, 1926) ( Fig. 2 ) and its “var.” linea ( Andrewes, 1926) ( Fig. 3 ), but is easily distinguished from both by a long yellow stripe in interval 5 of the elytra; by a shorter and broader pronotum with one lateral seta; and by much rounded head with convex temples. While in A. tenuis , the temples are almost straight and the pronotum is more elongate and without lateral seta.

Description. Body length 5.7–6.0 mm. Head and pronotum black, shiny, with a very faintly copper green reflection, labrum dark brown, mandibles reddish-brown, palpi light yellowish-brown, antennomeres I–IV yellowish-brown, rest of antennae dark-brown to blackish-brown; elytra black, shiny, with a very faintly copper green reflection, and with long yellow stripe in interval 5 of elytra; legs uniformly yellow-orange; ventral side black.

Microsculpture. Labrum with transverse meshes; elytra and head (frons and vertex) smooth; prothorax with very superficial transverse meshes.

Head rhomboidal, slightly convex; neck 0.25 times as wide as head, with evident carina along eye in front ¾ of lenght; tempora smooth, laterally slightly convex, almost as long as eye; eyes prominent; anterior and posterior supraorbital setae present (posterior one located fully apart from eye); labrum with six apical setae, anterior margin slightly concave; clypeus smooth, with two long setae; frons with V-shaped gentle impression in middle; clypeal furrow indistinct; frontal impressions deep; antennae reaching shoulders; tooth of mentum triangular, right angle at apice.

Pronotum PL/PW = 1.76; pitcher-shaped, somewhat constricted near base, widest in basal third; about 0.7 times as wide as head; smooth; with one lateral seta on each side; disc with transverse wrinkles; base about 1.6 times as wide as apex; median line very fine, obliterated at base and apex; laterobasal area punctate, with few punctures extended along sides, sometimes almost till midlength.

Elytra moderately long, 1.8 times as long as wide, widest in apical third; smooth; without parahumeral transverse depression; two marginal setae near apex of each elytron; apical truncation moderately sinuate; exterior apical angle of elytra right; striae represented by rows of large punctures, which become faint apically; intervals flat, interval III with four dorsal setiferous pores; one scutellar setiferous pore; umbilical series 7-1-7.

Ventral generally impunctate. Proepisternum with a few coarse punctures at base; mesoepisternum with few large punctures in apical area; metepisternum completely glabrous, long and narrow, about three times as long as wide; apical ventrite in male glabrous, emarginate at mid-margin, with one apical seta on each side; apical ventrite in female pubescent, with two apical setae on each side.

Legs slender; tarsomere IV of each tarsus weakly bilobed; tarsomere V with two ventral rows of four thin setae; femora with two setae (one near base and one in middle).

Male Genitalia: median lobe of aedeagus elongate, subcylindrical ( Fig. 4 ), on the ventral side with a deep notch forming an obtuse angle, which is located in the basal third; with a surface sclerites on apical orifice; apical orifice slightly turned to right in lateral view; apex elongate, downturned; endophallus without sclerites. Left paramere large, ear-shaped; right paramere narrower than left one. Female genitalia: gonocoxite 2 with two thick spines near outer margin of ventral side and one spine dorsally.

Etymology. The specific epithet is from the Latin albus (“white”) and lineata (“with a line”), in reference to the characteristic white stripe along each elytron of the new species,

Distribution. Philippines (Luzon and Negros Islands).

Systematic notes: Currently, we prefer to describe the new species as still belonging to Archicolliuris , in case the genus is split, then it would certainly find its place in Anacolliuris , as it is very close to that type-species.

Figures

FIGURES 1–4. Species of tribe Odacanthini.(1)—Archicolliuris albolineata sp. n., Paratype, female; (2)—Archicolliuris tenuis (Andrewes, 1926); (3)—Archicolliuris tenuis “var.” linea (Andrewes, 1926), Holotype (BMNH); (4)—aedeagus in lateral view of Archicolliuris albolineata sp. n.