Tsounkranaglenea hefferni, Lin & Ge, 2021

Lin, Mei-Ying & Ge, Si-Qin, 2021, Tsounkranaglenea hefferni gen. et sp. nov. from Sabah, Malaysia (Coleoptera Cerambycidae, Lamiinae: Saperdini), Zootaxa 5048 (2), pp. 289-297 : 291-296

Tsounkranaglenea hefferni sp. nov.

( Figs. 1-14 )

Type material. Holotype, male ( Fig. 1 ), Malaysia, Sabah, Crocker Range , 2003-II-16, leg. local coll. ( IZCAS) . Paratypes: 1 male, Malaysia, Sabah, Mt. Trus Madi , 1500-2000m, 1998-III-11, leg. Affenddy ( DHCO) ; 1 female, Malaysia, Sabah, Mt. Trus Madi , 1500-2000m, 1998-III /V, leg. local coll. ( IZCAS) ; 1 female, Malaysia, Sabah, Crocker Range , 2010-III-18, local coll. ( DHCO) ; 1 female, same data but 1998-III-19 ( DHCO) .

Other material (examined only by photographs). 1 male with length 11.5 mm, no. S11.9-151. Nobuo Ohbayashi showed the first author a specimen from Malaysia with dorsal view and lateral view pictures in 2011, which was surely this species. It may be from Trus Madi, however, the owner Mr. Minoru Sawai could not be contacted during this research .

Description (based on two males and three females): Male: length: 11.0– 11.5 mm, humeral width: 3.0– 3.2 mm. Female: length: 11.0–14.0 mm, humeral width: 3.4–4.2 mm. Body black. Head black, with frons covered with dense grayish white to yellow pubescence ( Figs. 2e , 11d ), which extends as two short vittae to occiput; antennae black. Prothorax covered with dense brownish pubescence in dorsal view except a whitish pubescent spot at base for both sexes and a whitish spot in middle of apical part for female only ( Figs. 11a, 12 ); with a longitudinal grayish white to yellow pubescence in lateral view ( Figs. 1b , 11b ). Scutellum black, covered by brownish (basal part) and whitish (apical part) pubescence. Elytra black, covered by rather dense brownish pubescence, at basal fourth and along suture with some silver erect setae, basal setae much longer than others ( Fig. 12 ), and with grayish white to yellow pubescence markings on each elytron as following: (for both sexes) a transverse vitta at base; a apical vitta; (for only female) a long line along second row of punctures (counting from lateral carina) from nearly base to apical tenth, normally with a subapical interruption; a lateral line along the puncture row near lateral carina from nearly base to middle ( Fig. 11b ); a short longitudinal vitta along suture just behind scutellum ( Fig. 11a , sometimes missing, Fig. 12 ). Ventral surface black with grayish white pubescence except a long stouter line with interruptions caused by lacking pubescence ( Figs. 1b , 11b ). Legs reddish brown to dark brown, covered with grayish pubescence. Frons longer than broad, width less than (male) or subequal to (female) two eyes’s combined width. Antennomere ratio: male, 25:5:36:28:27:26:25:24:22:20:21; female, 25:5:36:26:25:24:23:21:19:18:19. Prothorax longer than (male) to as long as (female) broad. Elytron truncated apically, with a short tooth at inner angle and a sharp and long tooth at outer angle. Hind femur reaching base of (female) or the bent part of (male) fifth abdominal segment, first hind tarsal segment longer than the following two segments combined. The sternite VII in male ( Figs. 2b, 2c, 3b–d ) strongly bent at base, the apical half reduced and transformed into two slender knife-shaped teeth ( Figs. 3b–d ), with long brown brush hairs on the outer side.

Male terminalia ( Figs. 6–10 ): Tegmen about 3.0 mm in length; lateral lobes slender ( Figs. 8a, 8c ), each about 1.2 mm long and 0.3 mm wide, provided with a thin setae, strongly protruding lobe at ventral base ( Fig. 8b ), apical half with medium long setae; ringed part elbowed in widest portion, converging; basal piece bifurcated apically ( Figs. 8c ); median lobe plus median struts strongly curved ( Figs. 9b, 9d ), shorter than tegmen; median struts more than one third and less than half of whole median lobe in length; dorsal plate slightly shorter than ventral plate; apex of ventral plate strongly emarginated, forming two lateral apical lobes ( Figs. 9a, 9b ); median foramen slightly elongated; internal sac about triple length of median lobe, with two pairs of basal plate-like sclerites (located behind apex of median struts), one band of distinct supporting armature, some barely separated plate-like sclerites between them, and three rod-like sclerites at the end ( Figs. 10a–10c ), rod-like sclerites about 1.0 mm, much shorter than median lobe or tegmen. Tergite VIII ( Figs. 6a–6c ) longer than broad, strongly narrowed before apex ( Fig. 6b ), apex emarginated with two short ear-shaped lateral lobes, with dense and long brown setae along the narrowed part ( Figs. 6a, 6b ). Sternite VIII with spiculum relictum as Fig. 7b , sternite IX (spiculum gastrale) as Fig. 7a . Female genitalia ( Figs. 13–14 ): spermathecal capsule composed of an apical orb and a long and strongly curved stalk, the stalk more than triple the length of the apical orb, curved twice at basal part ( Fig. 14 ). Spiculum ventrale longer than abdomen. In our observation, spiculum ventrale measured 7.7 mm for an adult compared with abdomen which measured 5.7 mm in ventral view.

Etymology. The species is named after Mr. Daniel Heffern (Texas, USA), who offered the interesting material for this study and provided the first author some wonderful saperdine specimens from Malaysia for research.

Diagnosis. This species resembles Glenea subaurata Breuning, 1950 at first glance by the similar shape and colour. The specific differences are easily defined by the male sternite VII. Without specimens for dissection, we can not conclude whether Glenea subaurata Breuning, 1950 should be moved to the new genus Tsounkranaglenea or not.

Remarks. Glenea subaurata Breuning, 1950 ( Figs. 15–18 ) was described based on “Type un male de Sumatra: Si-Rambé, XII-1890 - III-1891, leg. E. Modigliani”, with “Longuer 10 mm, Largeur 2mm. 1/3”. The holotype male ( Figs. 15–16 ) is deposited in MSNG and had been examined by the first author in June, 2008. Another male specimen ( Figs. 17–18 ) is deposited in NHMB, with a label written “ PARATYPE ”. Though it has a Breuning’s handwriting label “glenea / subaurata / mihi. P. T. / Breuning det.”, it is not a paratype because the locality “Madam / Sumatra ” and the individual specimen were not mentioned in the original paper ( Breuning, 1950b). Here we confirmed that the identification is correct and it is a useful additional material for the specific definition of Glenea subaurata Breuning, 1950 .

Figures

FIGURES 1-5. Tsounkranaglenea hefferni gen. et sp. nov. 1. Holotype, male. 2-5. Paratype, female. 2b-d, showing abdomen especially the 7th and 8th segment; 3, abdomen with genitalia removed; 4, claw of left middle tarsus; 5, claw of right middle tarsus. a, dorsal view; 4a, dorsa-lateral view; b, lateral view; 4b, back view; 2c, lateral view; 3c, ventral view; d, back view; e, frontal view. 1a, 1b, 2a: scale bar 4.0 mm; 3a-3c: scale bar 2.0 mm; others not to scale.

FIGURES 6–10. Terminalia of Tsounkranaglenea hefferni gen. et sp. nov. 6, Tergite VIII; 7, sternites VIII & IX; 8. Tegmen; 9, Median lobe; 10, endophallus, showing a band of supporting armature, basal plate-like sclerites and rod-like sclerites. a, Ventral view; b, Lateral view, 7b, dorsal view; c, dorsal view; d, lateral view. 7-10, Scale bar 0.1 mm; 6, scale bar 1.0 mm.

FIGURES 11–14. Females of Tsounkranaglenea hefferni gen. et sp. nov. 11, paratype, dissected; 12, paratype, just emerged, showing the erected setae along suture; a, dorsal view; b, lateral view; c, ventral view; d, frontal view. 13-14. Female genitalia. 11-12, scale bar 4.0 mm; 13-14, scale bar 1.0 mm.

FIGURES 15–18. Glenea subaurata Breuning, 1950. 15–16, holotype, male; 17–18, nontype, male; a, dorsal view; b, lateral view; c, ventral view; d, frontal view. 16 & 18, labels. 15 (except 15d) & 17, scale bar 4.0 mm; others not to scale.