Allorhynchium cariniventre Giordani Soika, 1986

Selis, Marco, 2023, Revision of the genus Allorhynchium in the Philippine Islands (Hymenoptera: Vespidae: Eumeninae), Acta Entomologica Musei Nationalis Pragae (Acta. Ent. Mus. Natl. Pragae) 63 (1), pp. 195-205 : 200

Allorhynchium cariniventre Giordani Soika, 1986 ( Figs 2–3 )

Odynerus aurivillianus von Schulthess, 1913: 4 [partim].

Allorhynchium cariniventre Giordani Soika, 1986a: 75 , ♀ – [ Philippines]

“ Mindanao: Musuan Bukidnon ” (holotype in coll. Kojima, Ibaraki,

Japan)

Type material examined. Odynerus aurivillianus : PARALECTOTYPE: J, “Mendanao // Carl / Auriv. // 15/9 99 // Hypanc / aurivillianus / det. Schulthess 912 // Type // Riksmuseum / Stockholm // 426 / 62 // Stockholm // Ancistrocerus / aurivillianus / Schulth // Allorhynchium / quadrituber-? / culatum (Schulth.) / det.J.v.D. Vecht 1963 // NHRS-HEVA / 000020634” ( NHRS, catalogue number NHRS-HEVA000020634).

Additional material examined. PHILIPPINES: MINDANAO: Agusan, Esperanza, v.2016, 2 ♀♀ ( MSVI); Agusan, Sibagat, i.2015, 2 ♀♀

( MSVI); Agusan, Sibagat, ix.2016, 1 J ( MSVI); Lanao, Wao, v.2016, 1 ♀ ( MSVI); Zamboanga, Gutalac, viii.2014, 1 J ( MSVI); Zamboanga, Gutalac, xi.2014, 1 J ( MSVI); Zamboanga, Gutalac, vi.2015, 1 J ( MSVI); Zamboanga, Labuan, i.2018, 1 ♀ ( MSVI); Zamboanga, Liloy, ix.2014, 1 ♀ ( MSVI).

Diagnosis. Recognized among the Philippine species by: apical teeth of clypeus spiniform and with a short lobe in between ( Figs 2c–d ), pronotal carina sharply angled on humeri, metanotum short and almost entirely horizontal, dorsal faces of propodeum at the same level as scutellum ( Fig. 2f ), T1 with basal transverse ridge dorsally, S2 with a strong basal transverse ridge creating a short basal vertical face, female vertex with cephalic foveae very widely spaced and covered by patches of brownish setae ( Fig. 2e ), male S2 with a pair of longitudinal bulges, male S7 with basal raised area shorter than flattened apical area and about as wide as 0.3× sternite width ( Fig. 2g ).

Following the key provided by NGUYEN et al. (2023), A. cariniventre belongs to the group of species characterized by pronotal carina sharply angled on humeri, propodeal dorsum at the same level as metanotum and S7 of male with a raised basal area. In particular, it comes very close to A. snelleni , from which it is readily differentiated by the following characters: male clypeus with a short median lobe on apical margin, female vertex with two large hairy pits, T1 more elongate, S2 with a strong basal transverse ridge, sides of S 2 in male with longitudinal raised tubercles, hind wing entirely fuscous.

Distribution. Philippines: Mindanao (VON SCHULTHESS 1913, as Odynerus aurivillianus ; GIORDANI SOIKA 1986a; GUSENLEITNER 1998) ( Fig. 6 ).

Notes. One of the paralectotypes of Odynerus aurivillianus from Mindanao ( Fig. 3 ) was examined using pictures; it perfectly corresponds to Allorhynchium cariniventre . As reported below under A. quadrituberculatum , the lectotype of O. aurivillianus is from Biliton Island and belongs to A. snelleni .

Figures

Fig. 2. Allorhynchium cariniventre Giordani Soika, 1986. a – habitus of female; b – habitus of male; c – head of female in frontal view; d – head of male in frontal view; e – head of female in dorsal view; f – mesosoma in posterodorsal view; g – metasoma of male in ventral view; h – male genitalia (aedeagus in ventral and lateral view, digitus).

Fig. 3. Allorhynchium cariniventre Giordani Soika, 1986 (misidentified paralectotype of Odynerus aurivillianus von Schulthess, 1913, J). a – habitus in dorsal view; b – habitus in lateral view; c – head in frontal view; d – metasoma in ventrolateral view; e – labels. Credits: Hege Vårdal (NHRS) 2023.

Fig. 6. Distributional map of Philippine species of Allorhynchium van der Vecht, 1963.