Micanitropis, Namyatova & Cassis, 2021

Namyatova, Anna A. & Cassis, Gerasimos, 2021, Five new genera of the subfamily Cylapinae (Insecta, Heteroptera, Miridae) from Australia, ZooKeys 1012, pp. 95-134 : 95

Micanitropis gen. nov.

Type species.

Micanitropis seisia sp. nov. by original designation.

Diagnosis.

Micanitropis can be separated from other representatives of Cylapinae using the following combination of characters: body impunctate; dorsum without net-like pattern of microsculpture on head, pronotum and pleura; dorsum clothed with rare short adpressed setae; hemelytron covered with small tubercles and sparse setae; head, pronotum and pleura with distinct rugosities (Fig. 13A, B, E, F, I, J, M ); head horizontal, in lateral view longer than high (Fig. 13I ); vertex not carinate (Fig. 13E ), not raised above eyes (Fig. 13I ); length of antennal segment I subequal to vertex width; antennal segment II not modified (Fig. 13K ); labium reaching or almost reaching genital segment (Fig. 13N ); calli moderately raised, not delimited with depression laterally and posteriorly, delimited from each other with shallow depression; collar narrow, delimited with shallow depression (Fig. 13E ); lateral margin of pronotum strongly carinate (Fig. 13I ); corium and hind femora without translucent patches; cuneus as long as wide at base (Fig. 13F ); hemelytron full, lateral margins rounded, not concave or constricted anteriorly (Fig. 2 ); metathoracic scent gland evaporative area triangular and large, reaching base of hind coxa (Fig. 13J ); forefemur wider than middle and hind femora; tarsal segment I longer than segments II and III each (Fig. 13O ); apical part of ductus seminis widened, with two lobes around secondary gonopore both having row of narrow outgrowths along outer margin (Fig. 14A, B ).

Description.

Male. Coloration (Fig. 2 ). Background colouration brown to dark brown with whitish yellow to pale brown markings and stripes, sometimes with reddish tinge. Surface and vestiture (Fig. 13B, E, I, J, M ). Body impunctate; scutellum not serrate laterally (Fig. 13M ); head, pronotum, scutellum and pleura with distinct rugosities (Fig. 3A, E, I, J, M ); hemelytron clothed with small tubercles (Fig. 13B ); dorsum and pleura without net-like pattern of microsculpture (Fig. 3A, E, I, J, M ). Body clothed with short sparse adpressed setae (Fig. 13B, J ); setae on dorsum very short, setae on antenna, pleura, legs and abdomen longer; spines on tibiae short and pale. Structure. Body elongate oval. Head. Horizontal, dorsally as long as or slightly longer than wide (Fig. 13E ), vertex not carinate, eye not protruding, not covering anterior margin of pronotum posteriorly (Fig. 13E ); in anterior view head wider than high, antennal fossa placed near ventral 1/3 of eye, above ventral margin of eye; base of clypeus not delimited with depression, placed near median of eye (Fig. 13A ); in lateral view head longer than high; vertex not raised above eyes; eye large, producing to ventral margin of head; eye located close to lateral margin of pronotum or slightly covering it; antennal fossa slightly removed from eye and placed close to suture between mandibular and maxillary plates; mandibular and maxillary plates not separated from head with suture or depression; labrum triangular, not modified, shorter than labial segment I; buccula elongate, ca. 5-6 × as long as high; distance between buccula and pronotum longer than buccula length (Fig. 13I ). Antenna. Shorter than body, antennal segment I not widened, shorter than head width; antennal segment II slightly widened towards apex, slightly thinner than segment I, longer than head width; segment III slightly shorter than half of segment II; segment IV ca. 1.5 × as long as segment III; segment III as thick as segment IV, and both thinner than segment II (Fig. 13K, N ). Labium. Apex almost reaching or reaching genital segment; labial segment I almost reaching posterior margin of head, subdivided in apical half (Fig. 13C, I, N ); segment II almost twice as long as segment I, subdivided subapically, its apical part 9-10 × as long as wide (Fig, 13D, N); segment III subequal to half of segment II, more than 10 × as long as wide; segment IV slightly shorter or same length as segment III (Fig. 13N ). Thorax. Pronotum wider than long (Fig. 13E ), lateral margins straight in dorsal view, strongly carinate in lateral view (Fig. 13E, I ); collar relatively narrow, narrower than antennal segment I, separated with weak depression; calli large and moderately upraised, covering 2/3 of pronotum surface, separated from each other with weak depression; posterior margin of pronotum slightly concave (Fig. 13E, M ); mesoscutum exposed; scutellum flat (Fig. 13M ); propleural apodeme T-shaped (Fig. 13I ); mesopleural apodeme slit-like; mesothoracic spiracle slit-like, with row of microsculpture along anterior margin; metathoracic gland evaporative area triangular, lateral margin reaching base of hind coxa; peritreme upraised, rounded; metepimeron narrow (Fig. 13J ). Hemelytron (Fig. 13F, M ). Outer margins rounded, not concave or constricted anteriorly; clavus with longitudinal ridge; claval commissure slightly longer than scutellum; medial fracture almost reaching middle of corium; ridge along medial fracture distinct basally; embolium relatively wide, its widest part subequal to 1/3 of cuneus width; R+M distinct only basally; cuneus visibly delimited, as wide as long, not incised at base; membrane with two cells, distance between cell and membrane apex slightly longer than cell length. Legs. Forecoxa slightly shorter than pronotum length, longer and wider than middle and hind coxae; forefemur widened, 3-4 × as long as wide, wider and slightly longer than middle femur, slightly wider and shorter than hind femur (Fig. 13G, H, N ), segment I of hind tarsus twice longer than segment II; segment III slightly longer than segment II (Fig. 13O ); claw with subapical tooth; middle row of tiles on unguitractor full (Fig. 13L ). Genitalia. See species description.

Female. Similar to male. Genitalia. See species description.

Etymology.

The genus is named for its sparkling appearance, micans from Latin meaning sparkling, glittering. The genus is masculine.

Remarks.

Micanitropis belongs to Fulviini as its structure fits the diagnosis for this tribe, in particular, it has the prognathous head, the antenna shorter than the body, the body impunctate, and its labium is long, reaching or almost reaching the genitalia segment ( Gorczyca 2000).

Micanitropis is similar to Peritropis Uhler, 1891, as they both have the moderately elevated calli, the carinate lateral margins of pronotum, the eyes elongate in lateral view and reaching gula, and the hemelytron, at least in some species, including type species P. saldaeformis Uhler, 1891, is covered with small tubercles ( Moulds and Cassis 2006; Wolski and Henry 2012). Currently Peritropis includes ca. 90 species worldwide, with only the Australian and American fauna having been revised ( Moulds and Cassis 2006; Wolski and Henry 2012). According to the previous works and personal observations, Peritropis differs from Micanitropis in the collar being indistinct, the vertex usually more or less carinate, the metathoracic scent gland evaporative area usually being reduced or at least its anterior angle being rounded, and the head, pronotum and pleura not being covered with rugosities, but instead with a net-like pattern of microsculpture. The anterior margin of pronotum of Peritropis is also often concave and angulate at sides, and the apical part of ductus seminis does not have the row of outgrowths along margin ( Moulds and Cassis 2006; Wolski and Henry 2012).

As mentioned in the remarks for Callitropisca , this genus, Micanitropis , and Xenocylapidius share similar genitalic structures, with the apical part of the ductus seminis having two lobes, bearing a row of long outgrowths along outer margin. See comparison of Callitropisca and Micanitropis in the Remarks section for Callitropisca . Xenocylapidius and Micanitropis are similar in the head being longer than high in lateral view, the vertex flat (Fig. 13I ; Wolski and Gorczyca 2014b: figs 9-15), and the tarsal segment I being longer than tarsal segments II and III each (Fig. 13O ). However, Xenocylapidius differs from Micanitropis in the antennal segment I being longer than the vertex, the setae covering the dorsum are either dense and short or long and sparse, and the head, pronotum, and scutellum are not rugose or only slightly rugose (pers. obs.; Wolski and Gorczyca 2014b).

Figures

Figure 2. Habitus of Callitropisca florentine, Laetifulvius morganensis, and Micanitropis seisia.

Figure 3. SEM images. Dariella rubrocuneata A head and pronotum, lateral view B head and pronotum, dorsal view C head, anterior view D labium E antenna F pleura G legs H trichobothria on hind femur I trichobothria on middle femur J hind tarsus K pretarsus, ventral view L cuneus and membrane cell M scutellum, clavus and corium.

Figure 13. SEM images. Micanitropis seisia A head, anterior view B tubercles on hemelytron C labial segment I D apical part of labial segment II E head and pronotum, dorsal view F cuneus and membrane cell G trichobothria on middle femur H trichobothria on hind femur I head and pronotum, lateral view J pleura K antennal segments I, II L pretarsus, ventral view M scutellum, clavus and corium N legs O hind tarsus P pretarsus, dorsal view.

Figure 14. Male genitalia. Micanitropis seisia A aedeagus, left lateral view B aedeagus, dorsal view C theca D genital capsule E left paramere, dorsal view F left paramere, posterior view G right paramere, posterior view H right paramere, dorsal view.