Apennocoris pilosulus Montandon, 1907

Kóbor, Péter, 2020, Apennocoris pilosulus: rediscovery of a forgotten big-eyed bug taxon from New Caledonia (Heteroptera: Lygaeoidea: Geocoridae), Zootaxa 4822 (2), pp. 285-292 : 288-290

Apennocoris pilosulus Montandon, 1907

( Figs. 1–3 )

LSID: http://lsid.speciesfile.org/urn:lsid:Lygaeoidea.speciesfile.org:TaxonName:488767

Dellapé & Henry (2020).

Type material examined: “ Lectotype (present designation): N.Calédonie / A Gambey (unknown handwriting)// Apennocoris / pilosulus/ Montandon/ type 1907 (handwritten label: A. L. Montandon)// TYPE // Montandon/ Collection/ via Parshley” (♀, KNHM) .

Additional specimen examined: „ NC—TR 4432// PR16NC07546// NOUVELLE-CALÉDONIE. Yaté. Ouinné/ OUI-MAL-5A: S 21.99777; E 166.62558; 172m / 15-IX au 02-XII-2016, E. Poirier leg. / APA-NCPS-2016-025/ Expédition La Planéte Revisitée MNHN-PNI ” (♂, MNHN) .

Redescription. Coloration. Body mostly ochraceous with fuscous and dark brownish decoration. Head: vertex with irregular median, longitudinal band extending from base of head to apex of clypeus; eyes and ocelli reddish; antenniferous tubercles and surroundings irregularly suffused with dark brown; antennomere I with brownish longitudinal line laterally, apex fuscous; antennomeres II–IV fuscous to dark brownish with base and apex with slightly and finely ochraceous; labial trough margined with dark brown; labiomere I ochraceous with base and apex fuscous; labiomeres II–IV pale fuscous. Thorax: punctation brownish; pronotum with irregular brownish bands along lateral margins and medially; median band interrupted with longitudinal ochraceous line posterior to pronotal callosities; a rounded, dark brownish spot at each humeral angle; scutellum pale fuscous except ochraceous trifurcate carina interrupted by irregular brownish spot medially. Clavus and corium of mesothoracic wings semi-hyaline, ochraceous; punctation dark fuscous; corium with irregular fuscous spots of various extent medially and apically; costal margin margined with dark brownish; membrane with fuscous venation. Thoracic pleurites with irregular dark brownish band longitudinally extending to abdominal connexiva; rounded dark brownish spots at each supracoxal lobe; peritreme of MTSEA ochraceous. Legs ochraceous, apices of femora and tibiae suffused with brown.Abdominal dorsum ochraceous with irregular brownish spot at segment VII above genital capsule of male; abdominal connexiva with band described above for thoracic pleurites; venter with irregular reddish spots at base of segments; tubercles of male pygophore blackish.

Structure (only characters not mentioned in generic description are provided). Body moderately elongate, covered with silvery, semi-erect pubescence shorter than dark bristles. Ratio of eye-ocellus distance to distance of ocelli: 1: 0.54. Ratio of antennal segments: 1: 2.86: 2.38: 2.14. Ratio of labial segments: 1: 0.45: 0.80: 0.80. Pronotum ratio (basal width to median length): 1: 0.63. Trifurcate carina of scutellum well-developed, somewhat bulging. Scutellum ratio (basal width to median): 1: 0.97. Length of claval commissure to median length of scutellum: 1: 2.44. Abdominal connexiva with sparse semi-erect pubescence.

Measurements (in mm). Total body length: 4.20; head length: 0.78; head width: 1.47; distance of ocelli: 0.32; pronotum length 0.85; pronotum width 1.36; scutellum length 0.75; scutellum width: 0.76; length of claval commissure: 0.31.

Diagnosis. Superficially resembles the New Caledonian Germalus scutellatus (Distant, 1920) in coloration and pattern, however, structural characters provided in the generic redescription allow an easy separation of the two species.

Figures

FIGURE 1. Apennocoris pilosulus Montandon, 1907, coleopterous female (lectotype, KNHM): A. dorsal habitus, B. lateral view, C. labels (scale bar: 1 mm).

FIGURE 2. Apennocoris pilosulus Montandon, 1907, macropterous male (MNHN): A. dorsal habitus, B. lateral view (scale bar: 1 mm).

FIGURE 3. Details of Apennocoris pilosulus, macropterous male: A. labial trough, B. metapleurite with structures of metathoracic scent efferent apparatus (indicated with red arrow), C. detail of thorax and abdomen in lateral view with dorsal setosity. (scale bar: 1 mm).