Pygoplatys (Odontoteuchus) berendi, Magnien, 2011

Magnien, Ph., 2011, Description of two new species of Pygoplatys Dallas, 1851, with a key to the species of the genus (Hemiptera: Heteroptera: Tessaratomidae), Heteropterus Revista de Entomología 11, No. 2, pp. 287-297 : 290-293

publication ID

 

persistent identifier

https://treatment.plazi.org/id/FF6287DF-FFC6-FFC8-FC86-4DC5FA97F84E

treatment provided by

Luisschmitz

scientific name

Pygoplatys (Odontoteuchus) berendi
status

sp. nov.

Pygoplatys (Odontoteuchus) berendi View in CoL n. sp.

Type material:

HOLOTYPE: ♂, «Lecourt G. coll. / 08 VI 1996 / Tentena 550 m / Central Sulawesi » ( MNHN) .

PARATYPES: 1 ♀, same data ( MNHN) ; 5 ♂♂, 5 ♀♀, same data ( PHM) .

Other material examined:

1 ♀, « New Guinea / Celebes / Sidaunta », « 14 V 1986 / Leg. R. Holynski» ( HNHM). See discussion hereunder .

Note: The place coordinates are S 1º 23’, E 119º 58’, ca. 800 m, the spot noted as «rich (?secondary?) forest» (Holynski, pers. comm.).

Description:

Habitus: Figs. 1 c-d (♂ and ♀).

Brown; distal two thirds of 4 th antennal segment of much paler hue; pronotum and scutellum shiny; apex of scutellum and hemelytron of slightly paler hue, uniform on the corium, shiny, veins much paler, in contrast with the background, membrane light brown; venter brown to tawny, shiny; legs of the same hue; coxae, rostrum and spiracles light brown.

Head: juga narrow, margins parallel, leaving antenniferous tubercles uncovered, fitted with a short anteocular tooth on the margin, rounded at the apex, clypeus much shorter and completely enclosed by juga; 1 st antennal segment short, not reaching the apex of juga; 3 rd segment shorter by 10% than the 2 nd; 4 th segment longer than the 2 nd by 10-25%; pilosity dense, length of the hairs about one fourth of segment diameter; rostrum short, surpassing anterior coxae by the length of its 4 th segment.

Pronotum: humeral angles blunt; pronotum slightly larger than abdomen; calli moderately marked; lateral margins thinly wrinkled; punctation coarse and irregular on disc, thinner posteriad; sternal process long, with apex blunt, reaching anterior margin of fore coxae; 1 st segment of tarsi slightly inflated, with a brush of adhesive hairs on the ventral surface, segments 2 nd and 3 rd cylindroconical, 2 nd segment very short.

Scutellum: punctation similar to posterior part of pronotum, triangular with apex lanceolate, groovy.

Hemelytron: punctation thin and regular; membrane with four basal cells, veins strong, parallel.

Abdomen: male: posterior margin of pygophore, in normal position, only slightly surpassing the posterior margin of the 7 th segment; female: 7 th laterotergites extending posteriorly more or less surpassing abdominal apex, 8 th laterotergites weakly concave; venter thinly granulated.

G e n i t a l i a ( Figs. 3 a-f):

Male: Pygophore ( Fig. 3a) widening posteriorly, posterior margin concave; opening with a triangular tooth on each side, located just anterior to sensorial lobe of paramere. Paramere ( Fig. 3c) T-shaped, apophysis evenly curved inwards, sensorial lobe longer than wide, conspicuously narrowed in the middle, with long setae. Phallosoma ( Fig. 3b) fitted with two sclerotized plates, dorsally protruding; conjunctiva bearing two pairs of processi, as is the rule in this genus, one sclerotized in antero-ventral position, stylet bifurcated and nearly symmetrical, and the other membranous in postero-dorsal position; vesica very long, ejaculatory reservoir strongly curved at base, S-shaped in middle, and strongly tapering at apex.

Female: External genitalia ( Fig. 3d) as in the other species of the genus (see Magnien et al., 2008). Spermatheca ( Fig. 3e): apical receptacle ovoid connected to the intermediate part ( Fig. 3f) by a long, distinctly curved tubular neck; intermediate part with distal flange very reduced, proximal normal; spermathecal duct bipartite: proximal part wide, folded and thinly transversely wrinkled on its distal half, lanceolate, distal part thin, little less than half as long as proximal part.

M e a s u r e m e n t s: mean (min-max):

Male: Length: 17.5 mm (16.8-18.3). Width including humeral processi: 10.2 mm (9.7-10.6). Ratio length/ width 1.7-1.8.

Female: Length: 19.2 mm (18.6-19 .8). Width including humeral processi: 11.6 mm (11.2-12 .3). Ratio length/width 1.6-1.7.

Etymology:

This species is dedicated to my friend Berend Aukema, in recognition for all the work he has done to support the knowledge in Heteroptera, especially by editing with Christian Rieger the catalogue of Palaearctic Heteroptera.

Distribution:

Known only from Central Sulawesi, Indonesia.

Biology:

Host plant unknown.

Discussion:

Pygoplatys berendi n. sp. is the second Pygoplatys species known from Sulawesi. The previously described P. celebensis Breddin, 1901 is known to me only by the female type preserved in DEIC. Apart from the great difference in size, P. celebensis having a length of about 25 mm, and the shape of the anterior margin, used in the key to separate the species, some other characters show clear differences. There is a difference in the length and proportions of the antenna, about 40% of the total length in P. celebensis , about 35% in P. berendi n. sp., but the 4 th segment is 30% longer than the 2 nd in P. berendi n. sp., only 15% in P. celebensis . The punctation is coarser and less regular in P. berendi n. sp. than in P. celebensis . The apical angles of the femora are black in P. celebensis , as in P. rosulentus Stål, 1871 , of the same hue as the legs in P. berendi n. sp. Apices of abdomen are also different ( Figs. 3d, 3i).

In fact, P. berendi n. sp. seems to be closer to the Filipino P. thoreyi Dohrn, 1863 than to any other species of the subgenus. They have the same size and the same general appearance. Several characters allow, however, a clear differenciation between them. The first one is used in the key: P. thoreyi has a small but conspicuous humeral process, whereas P. berendi n. sp. has only a rounded humeral angle. P. berendi n. sp. is stouter than P. thoreyi , particularly in females, and its head is relatively smaller than that of P. thoreyi , the width of the pronotum being (♂ (♀ )) about 3.7 (4.0) times the diatone, 3.3 (3.1) for P. thoreyi . The anteocular tooth is small in P. berendi n. sp., long and acute in P. thoreyi . Regarding the genitalia, there are some minor differences in the penis, but the most conspicuous difference lies in the shape and pilosity of the sensorial lobe of the paramere, which is constricted at its base ( Fig. 3c), whereas all the known males of the subgenus, including P. thoreyi ( Fig. 3g), have a regularly converging and rounded sensorial lobe. The pilosity length is about half of the maximum width of the paramere in P. berendi n. sp., about equal to this width in P. thoreyi . The female genitalia also presents some minor differences, the most conspicuous being the relative length of the intermediate part and tubular neck of the spermatheca. The measurements have been taken between the insertion of the flanges for the intermediate part, and from the distal flange insertion to the opening in the terminal receptacle for the tubular neck. In P. berendi n. sp. ( Fig. 3f), the ratio length of intermediate part versus length of tubular neck is 1.3, whereas it is about 2.4 in P. thoreyi ( Fig. 3h).

I did not include the HNHM female specimen from Sidaunta in the typical series, because, despite the fact that it shares most of the features of the species, its pronotum is fitted with a humeral process akin to that of P. thoreyi , and its size, about 22 mm, is slightly bigger than that of the typical series of P. berendi n. sp. The locality being only 110 km north-west of the typical locality of P. berendi n. sp., it may be a variation of the new species, but more material is necessary to sort different possible hypotheses.

MNHN

France, Paris, Museum National d'Histoire Naturelle

PHM

PHM

HNHM

Hungary, Budapest, Hungarian Natural History Museum

DEIC

Germany, Muencheberg, Deutsches Entomologisches Institut im ZALF

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Hemiptera

Family

Tessaratomidae

Genus

Pygoplatys

Darwin Core Archive (for parent article) View in SIBiLS Plain XML RDF