Pygoluciola nitescens ( Olivier 1903b ) Ho, 2019

Ho, - Z., 2019, The Luciolinae of S. E. Asia and the Australopacific region: a revisionary checklist (Coleoptera: Lampyridae) including description of three new genera and 13 new species, Zootaxa 4687 (1), pp. 1-174 : 134-137

publication ID

https://doi.org/ 10.11646/zootaxa.4687.1.1

publication LSID

lsid:zoobank.org:pub:CE73264D-C234-4B82-A634-CAD6254C5957

DOI

https://doi.org/10.5281/zenodo.4688941

persistent identifier

https://treatment.plazi.org/id/6C3DA91C-51BE-18DE-FF0E-FAD1EE801A14

treatment provided by

Plazi

scientific name

Pygoluciola nitescens ( Olivier 1903b )
status

comb. nov.

Pygoluciola nitescens ( Olivier 1903b) View in CoL comb. nov.

Figs 422−436 View FIGURES 422−429 View FIGURES 430–436

Luciola nitescens Olivier 1903b: 19 View in CoL ; 1905: 206. McDermott 1966: 110.

Type. INDIA. Darjeeling (as Dardjilling) not located .

Other specimens examined. MALAYSIA as Borneo: Sabah Ranau 7.v.2006 S. Chew female ( NHML) ( Figs 433, 434 View FIGURES 430–436 ). Borneo, Chaper 1891, male, identified by E. Olivier ( Figs 422, 423 View FIGURES 422−429 ) ( MNHN) (identification label reads 1. Handwritten ‘ Luciola nitescens Ern Oliv. ’; 2. Printed ‘Museum Paris Borneo Chaper 1891’). Sarawak inland Leluan I. Polunin male ( ANIC) ( Figs 425−432 View FIGURES 422−429 View FIGURES 430–436 ) .

Diagnosis. A large heavy bodied species (12.0 mm long) with orange pronotum and black elytra which may be narrowly orange marked across their bases; distinguished from the similarly coloured P. calceata comb. nov. by its size ( calceata is 9 mm long) and the outline of the MPP (in nitescens it is short and apically acute; in calceata it is about as long as wide and apically truncated).

Redescription of male. 12.0 mm long. Colour ( Figs 422−424 View FIGURES 422−429 ): pronotum, MS and MN orange; elytra almost black, having humerus and narrow basal area orange in type; head between eyes, antennae and palpi very dark brown almost black; venter of pro and mesothorax yellowish, of metathorax slightly darker (venter of all thoracic segments light brown in type); legs yellowish (light brown in type) with all tibiae and tarsi dark brown; basal abdominal ventrites yellowish; V6, 7 with whitish LO, V7 LO retracted from all margins in Leluan male, retracted along posterior margin only in type; all abdominal tergites yellowish in Leluan male (colour not observed in type). Pronotum: width subequal to (in type), or slightly wider than humeral width; lateral margins strongly divergent and posterolateral corners rounded and projecting. Elytron: slightly convex sided; interstitial lines not well defined. Head: GHW 6 x SIW: antennal sockets very close but not contiguous. Mouthparts: apical labial palpomere laterally flattened of the form of a broad triangle with inner edge dentate (3 teeth). Antennae:> GHW but not exceeding 2 x GHW; all segments elongate (longer than 2 x width) slender. Abdomen ( Figs 423, 425 View FIGURES 422−429 ): posterior margin of V7 without PLP and with short broadly rounded MPP; T8 with truncate posterior margin and subparallel sided, anterolateral prolongations long slender expanded vertically. Aedeagal sheath ( Figs 427−429 View FIGURES 422−429 ): tergite with anterior transverse darkened separate plate associated with but not clearly attached to the anterior margin of the sheath tergite; basal ¾ of sheath sternite with sclerotized margins very narrow, expanding in apical ¼ where it is terminated by broad paired rounded hairy lobes which are united across their bases by a darkened semicircular piece; dark transverse strip of cuticle (outline of lobes arrowed in Fig. 428 View FIGURES 422−429 ). Aedeagus ( Figs 430−432 View FIGURES 430–436 ): slightly more than twice as long as wide and evenly wide along its entire length; BP in two well cuticularised narrow parts; membranous apical section of LL with dense line of long hairs inside their lateral margins, and quite widely expanded in horizontal plane; ML tapering to a rounded narrow apex, not much shorter than LL; darker basal portion of LL with apical 1/3 separated, rest of LL fused at their bases; anterior margin of basal portion of LL asymmetrical, produced and rounded on its left.

Female. Figs 433−436 View FIGURES 430–436 . Assigned on the basis of its size, locality and distinctive colour. 18 mm long. Colour ( Figs 433, 434 View FIGURES 430–436 ): pronotum dingy yellowish with faint traces of very small median brown markings; underlying fat body is retracted and confuses interpretation of colour; MS, MN dingy yellow; elytra black shiny; head, antennae and palpi black; venter of thorax and abdominal ventrites anterior to LO brown; legs brown except for dark brown tibiae and tarsi; ventrites 2–5 semitransparent and underlying fat body is visible beneath cuticle; LO in V6 creamy white retracted from anterior margin of V6; V7, 8 semitransparent orange yellow; all abdominal tergites orange yellow, semitransparent. Pronotum ( Fig. 433 View FIGURES 430–436 ): median anterior margin not produced anteriorly; lateral margins strongly divergent; posterolateral corners rounded and produced beyond midposterior margin; width greater than humeral width. Elytron: slightly convex sided; interstitial line 3 irregularly defined. Abdomen ( Figs 433, 434 View FIGURES 430–436 ): V7 posterior margin broadly emarginated with posterolateral corners rounded; V8 posterior margin emarginated ( Fig. 435 View FIGURES 430–436 ) with anterior margin well coloured and separated from rest of ventrite by a clear membranous position. Genitalia ( Fig. 437 View FIGURES 437−448 ): styli with both segments elongated slender, basal segment slightly longer than apical. Reproductive system ( Fig. 436 View FIGURES 430–436 ): bursa, SDG and spermatheca observed through abdomen soaked for an hour in cold KOH; bursa plates may be present but not clearly observed (white arrow indicates bursa).

Remarks. Olivier (1903b) described this species from India. We are unable to locate Indian specimens. Howev- er we believe the male described here conforms with those external features we have determined from the Bornean male described by Olivier in 1905.

The assignment to Pygoluciola is justified by the general outline of the aedeagal sheath sternite and the aedeagus pattern. This is the first time however that an aedeagal sheath in this genus was found with a separate plate lying presumably anterior to the sheath tergite. This is a feature of several species in Abscondita which our analyses show to be closely related to Pygoluciola . The pronotal outline, with strongly developed posterolateral corners and divergent lateral margins, and the distinctively shaped T8, which is parallel sided with long slender anterolateral prolongations, are more easily recognised features. However there is nothing about the outline of the terminal abdominal ventrite, which has a rounded MPP, which would suggest Pygoluciola , and the shape is more associated with species of Atyphella .

NHML

Libya, Tripoli, Natural History Museum

MNHN

France, Paris, Museum National d'Histoire Naturelle

ANIC

Australia, Australian Capital Territory, Canberra City, CSIRO, Australian National Insect Collection

NHML

Natural History Museum, Tripoli

MNHN

Museum National d'Histoire Naturelle

ANIC

Australian National Insect Collection

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Coleoptera

Family

Lampyridae

Genus

Pygoluciola

Loc

Pygoluciola nitescens ( Olivier 1903b )

Ho, - Z. 2019
2019
Loc

Luciola nitescens

McDermott, F. A. 1966: 110
Olivier, E. 1905: 206
Olivier, E. 1903: 19
1903
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