Glenea pulchella Pascoe, 1858

Hiremath, Sangamesh R. & Lin, Mei-Ying, 2021, Description of two new species of Glenea Newman, 1842 from southern India and reinstatement of Glenea vestalis Heller, 1934 (Coleoptera: Cerambycidae: Lamiinae: Saperdini), Journal of Natural History 55 (3 - 4), pp. 205-245 : 217-221

Glenea pulchella Pascoe, 1858

( Figures 13–18 )

Glenea pulchella Pascoe, 1858: 260 . TL: Malacca. TD: BMNH.

Glenea vesta Pascoe, 1866: 260 , pl. 28, Figure 3 . [Unnecessary new name for Glenea pulchella Pascoe, 1858 ]

Glenea pulchella: Aurivillius 1926: 111 (partim).

Glenea (Glenea) pulchella: Breuning 1956a: 195 (partim).

Type specimen examined

Holotype ( Figure 13 (a–e)), ♂, Malacca ( BMNH, ex Pascoe Coll. 93–60).

Other specimens examined

Malaysia: 1 ♀, Bornéo Occ ., Pontianak, 1899 ( MNHN) ( Figure 14 ); 1 ♀, Sarawak ( MNHN, Museum Paris Coll. H.W. Bates 1952, ex Musaeo, H.W. Bates 1892); 3 ♂♂ 8 ♀♀, Sandakan Borneo, Baker ( NMNH); 1 ♀, Sabah, Mt . Trus-Madi, 18 March 2011, local coll. ( DHCO) ; 1 ♀, Sabah Crocker Range , vic. Trus Madi , 13 March 2000, local coll. ( DHCO) ; 1 ♀, Sabah Crocker Range , April 1998, local coll. ( DHCO) ; 1 ♂, Borneo ( IRSNB, ex Coll. Nonfried); 1 ♀, Borneo ( IRSNB, ex Coll. F. de Moffaris); 1 ♀, Borneo , Pontanak ( NHMB, ex FREY); 2 ♀♀, Borneo Occ . Pontianak, 1899 ( MNHN); 1 ♂, Borneo , 1891, W. Doherty ( MNHN, ex Coll. R. Oberthür, 1952); 1 ♀, Kuching, 1902 ( MHNL, ex collection P. Lepesme); 1 ♀, Borneo occ., Pontianak, 1899 ( MHNG); 4 ♀♀, Borneo occ., Pontianak , 1899 ( MNHN) .

Singapore

2 ♂♂, Singapore, coll. Wallace ( MNHN, ex Musaeo James Thomson); 2 ♂♂, Singapore ( MNHN); 1 ♀, Singapore ( BMNH); 1 ♀, Singapore ( MNHN, ex Musaeo Mniszech) .

Description complementary to Pascoe (1858) and Breuning (1956a). Male: length: 8.8–10.3 mm, humeral width: 2.6–3.1 mm. Female: length: 11.3–13.4 mm, humeral width: 3.6–4.3 mm. Both male and female with simple claws.

Male genitalia ( Figures 15–16 )

Tegmen length about 2.6 mm; lateral lobes long and slender, each about 1.0 mm long and less than 0.1 mm wide, apex covered with short, reddish brown setae; basal piece bifurcated distally; median lobe plus median struts slightly curved, shorter than tegmen (11:13); the median struts about 2/3 of the whole median lobe in length; dorsal plate subequal to ventral plate; ventral edge of median orifice round; median foramen hardly elongated; internal sac 2 times longer than combined length of median lobe and median struts, with 2 pairs of basal armature and 4 rods; each rod about 1.0 mm, shorter than half of tegmen. Tergite VIII trapeziform, apex truncated, with short setae. Length of ventrite IX subequal to ringed part of tegmen.

Female genitalia ( Figures 17–18 )

Spermatheca rounded, with a moderately long and curved stem at its base. Spermathecal gland originating from a distinctly sclerotised ringed plate ( Figure 17 ). Tignum much longer than abdomen. Tignum 8.8 mm for an adult with a 5.3 mm long abdomen in ventral view.

Diagnosis

Glenea pulchella differs from G. vellayaniensis sp. nov. by colour and haired maculae in the following body regions: (1) scape and antennomere II dark brown to black (vs scape and antennomere II reddish brown in G. vellayaniensis sp. nov.); (2) sublateral macula on pronotum made up of yellow hairs with straight inner margin (vs sublateral macula on pronotum made of yellow hairs intermixed with creamy white hairs with proximally concave inner margin in G. vellayaniensis sp. nov.); (3) basal elytral yellow-haired maculae semicircular (vs basal elytral yellow-haired maculae bean-shaped in G. vellayaniensis sp. nov.); (4) middle elytral yellow-haired maculae oval, without small spots posteriorly (vs median maculae on elytra transversely oval with small spots posteriorly in G. vellayaniensis sp. nov.); (5) elytral apex not covered by yellow hairs, but last maculae located before apex (vs elytral apex covered with yellow haired maculae in G. vellayaniensis sp. nov.).

Distribution

Malaysia, Singapore.

Remarks

Pascoe (1866: 260) wrote ‘I have altered the specific name pulchella , it having been previously used by Hope’. And Pascoe gave the species the new name ‘ Glenea vesta ’. Pascoe (1867: 370) wrote ‘ Glenea pulchella Hope , sec. J. Thomson, Ess. & c., p. 58’ from Sarawak. We checked page 58 of Thomson (1857) and found nothing related to ‘ Glenea pulchella Hope’; then we checked page 58 of Thomson (1860), and there it was written ‘ Glenea pulchella, Hope Syn. : G. conspuncta , Melly’. However, ‘Hope’s species was not described before 1860’ ( Aurivillius 1926: 111). ‘ Glenea pulchella Hope’ described by Pascoe (1867) was renamed Glenea pascoei Aurivillius, 1923 , while ‘ Glenea pulchella Hope’ described by Thomson (1860) from Sylhet was renamed Glenea pulchra Aurivillius, 1926 . Glenea pulchella Pascoe, 1858 is the earliest name, and therefore the new name ‘ Glenea vesta ’ is not required.

Breuning (1956a) treated G. vestalis Heller, 1934 as a morph and described several morphs (infrasubspecific). However, his ‘morphs’ are good species.

Mukhopadhyay and Biswas (2000) reported the distribution range of G. pulchella as India: Meghalaya, Bangladesh, Burma; while Mitra et al. (2016) mentioned India: Karnataka, Manipur, Meghalaya, Sikkim, Tamil Nadu, West Bengal . These distribution records are not reliable, based on neither specimens nor trustable identifications. The first author inquired for supportive material from the Zoological Survey of India ( ZSI), Kolkata; however, there are no specimens of G . pulchella in the collection. The known localities of this species are, to our knowledge, limited to Malaysia and Singapore.

Figures

Figures 13–14. Glenea pulchella Pascoe, 1858, habitus. 13(a–e) Holotype, male, from Malacca: 13(a) dorsal view, 13(b) lateral view, 13(c) ventral view, 13(d) head, frontal view, 13(e) labels. 14. Female, from Bornéo Occ., Pontianak. Scale bar: 2 mm. Figure 13(d,e) not to scale.

Figures 15–18. Genitalia of Glenea pulchella Pascoe, 1858. 15–16. Male, from Singapore. 15(a–c) Male genitalia: 15(a) ventral view, 15(b) dorsal view, 15(c) lateral view. 16. Tergite VIII, sternites VIII and IX. 17–18. Female, from Bornéo Occ., Pontianak: 17. whole system of female genitalia; 18. spermathecal capsule. Scale bar: 1 mm. Figures 17 and 18 not to scale.

Figures 1–3. Glenea vellayaniensis sp. nov. 1(a–d) Male, holotype: 1(a) dorsal view, 1(b) lateral view, 1 (c) ventral view, 1(d) head, frontal view. 2–3. Female, paratypes: 2(a) dorsal view of the specimen with abraded elytral maculae, 2(b) ventral view, 2(c) head, frontal view; 3. dorsal view of the specimen with intact elytral maculae. Scale: 1(a–c), 2(a,b) and 3 = 1 mm; 1(d) and 2(c) = 0.5 mm.