Aenictoxenides mirabilis Maruyama, 2014

Maruyama, Munetoshi, Komatsu, Takashi, Katayama, Yuji, Song, Xiao-Bin & Sakchoowong, Watana, 2014, Myrmecophilous rove beetles (Coleoptera: Staphylinidae) associated with Aenictus hodgsoni (Hymenoptera: Formicidae) from Thailand, with description of two new genera and three new species, Zootaxa 3796 (2), pp. 361-373 : 372-373

Aenictoxenides mirabilis Maruyama , sp. n.

( Figs. 33–52 )

Type series. Holotype, ♂, " THAI: Nakhon Ratchasima, / Khao Yai National Park, / Heaw Suwat (750 m), / 30 IX 2007, Maruyama M., / Komatsu T. & Katayama Y. / MM-AE029 // HOLOTYPE / Aenictoxenides / mirabilis / det. Maruyama, 2014" (male 8th abdominal segment and aedeagus dissected and mounted in Euparal) ( KUM) . Paratypes, 2♂, 2♀, 7 sex?, same data as holotype ( KUM, DNP); 2 sex?, " THAI: Nakhon Nayok, / Khao Yai National Park, / near Cafeteria (700 m), / 3 X 2007, Maruyama M., / Komatsu T. & Katayama Y. / MM-AE036" ( KUM, DNP) .

Description. Body ( Figs. 33–35 ) small. Light reddish brown overall.

Head ( Figs. 33–36 ) sparsely covered with short, recumbent setae, with 9 or 10 macrosetae. Antenna ( Figs. 37 ) short, with some erecting setae on each segment; segment III shortest, 1/2 as long as IV; segment V widest; segment VI longest, narrowed apicad; segment VII conical..

Pronotum ( Figs. 33–35 , 43 ) with anterior margin shallowly emarginate; posterior margin convex medially; disc glabrous, with 12 macrosetae around mesal area and 6 short macrosetae along lateral margin; hypomera sparsely covered with setae, with 7 macrosetae. Metasternum ( Fig. 44 ) with 2 macrosetae antero-medially. Elytra ( Figs. 33–35 , 45 ) glabrous; disc with 6 macrosetae around mesal area and 4 short macrosetae along lateral margin; hypomera sparsely covered with setae, with 5 macrosetae along lateral margin.

Abdomen ( Figs. 33–35 , 49, 50 ): tergites II–VIII with following numbers of macrosetae: 0–3–3–3–3–2–2; sternites III–VIII with those: 10–10–10–8–3–3 (III – VI with variation, ± 1).

Male: Median lobe of aedeagus ( Figs. 52 ) with crista apicalis truncate at apex in lateral view; sclerites of internal sac small; apical lobe of paramere ( Fig. 53 ) covered with pores, with 4 setae.

Female: Spermatheca ( Fig. 54 ) with basal part coiled at middle.

Measurements. BL, ca. 1.8‒2.0; FBL, ca. 0.9‒1.1; HW, 0.64‒0.70; AL, 0.25‒0.27; PL, 0.33‒0.36; PW, 0.80‒0.88 (N=3).

Differential diagnosis. This species is similar to Aenictoxenus species but easily distinguished from them by the more elongate body, and the temples of head which strongly extend laterally. See also Diagnosis of the genus.

Etymology. The Latin adjective mirabilis meaning "amazing", "strange", for the amazingly beautiful and strange habitus of this species.

Symbiotic host. Aenictus hodgsoni .

Distribution. Central Thailand.

Figures

FIGURES 33–35. Habitus of Aenictoxenides mirabilis Maruyama, gen. & sp. n. 33―dorsal view; 34―ventral view; 35―lateral view.

FIGURES 36–46. Body parts of Aenictoxenides mirabilis Maruyama, gen. & sp. n. 36―head, dorsal view; 37―left antenna; 38―labrum; 39―left mandible; 40―memtum; 41―labium; 42, right maxilla; 43―pronotum, ventral view; 44―meso- and meta traces; 45―right elytra; 46―left fore leg.

FIGURES 47–54. Body parts of Aenictoxenides mirabilis Maruyama, gen. & sp. n. 47―left mid leg; 48―left hind leg; 49―male tergite VIII; 50―male sternite VIII; 51―male abdominal tergites IX and X; 52―median lobe of aedeagus, lateral view; 53―paramere; 54―spermatheca.